Version bump

.github/ISSUE_TEMPLATE/1-problem.md

@@ -1,7 +0,0 @@
----
-name: Problem
-about: Something does not seem right
-
----
-
-

.github/ISSUE_TEMPLATE/2-suggestion.md

@@ -1,7 +0,0 @@
----
-name: Suggestion
-about: Share how Serde could support your use case better
-
----
-
-

.github/ISSUE_TEMPLATE/3-documentation.md

@@ -1,7 +0,0 @@
----
-name: Documentation
-about: Certainly there is room for improvement
-
----
-
-

.github/ISSUE_TEMPLATE/4-discussion.md

@@ -1,7 +0,0 @@
----
-name: Help or discussion
-about: This is the right place
-
----
-
-

.github/ISSUE_TEMPLATE/5-other.md

@@ -1,7 +0,0 @@
----
-name: Anything else!
-about: Whatever is on your mind
-
----
-
-

.gitignore

@@ -1,4 +1,2 @@
-target/
-**/*.rs.bk
-*.sw[po]
+target
 Cargo.lock

.travis.yml

@@ -1,25 +1,34 @@
-sudo: false
 language: rust
-cache: cargo
-
-# run builds for all the trains (and more)
 rust:
   - stable
   - beta
   - nightly
-  - 1.13.0
-  - 1.15.0
-  - 1.20.0
-  - 1.21.0
-  - 1.25.0
-  - 1.26.0
-
+env:
+  global:
+    secure: HO41LMpMXkF2In9+1sxWVu7fgolL+y9+4Q5PI6wZX2L5pDwpPJCjxaQarQXCEnoIxED1PlP03JuF7ULNz0zw1ylYhAOfOSdkxFZRnE2wMZqq6qvXBHwyMiDrAociIzoPKSGv7JVrKPsjsnd+96K6xxueIodQZrmAdyq7N/M82Mc=
+  matrix:
+    - CRATE=serde_tests TARGET=test
 matrix:
   include:
     - rust: nightly
-      env: CLIPPY=true
+      env: CRATE=serde_macros TARGET=test
     - rust: nightly
-      env: EMSCRIPTEN=true
-      script: nvm install 9 && ./travis.sh
-
-script: ./travis.sh
+      env: CRATE=serde_macros TARGET=bench
+    - rust: nightly
+      env: CRATE=serde_tests TARGET=bench
+script:
+  - (cd $CRATE && cargo $TARGET)
+after_success: |
+  [ $TRAVIS_BRANCH = "master" ] &&
+  [ $TRAVIS_PULL_REQUEST  = false ] &&
+  mkdir -p target/doc &&
+  (cd serde && cargo doc --no-deps) &&
+  (cd serde_codegen && cargo doc --no-deps) &&
+  (cd serde_macros && cargo doc --no-deps) &&
+  cp -r serde/target/doc target/doc/serde &&
+  cp -r serde_codegen/target/doc target/doc/serde_codegen &&
+  cp -r serde_macros/target/doc target/doc/serde_macros &&
+  echo "<meta http-equiv=refresh content=0;url=`echo $TRAVIS_REPO_SLUG | cut -d '/' -f 2`/index.html>" > target/doc/index.html &&
+  sudo pip install ghp-import &&
+  ghp-import -n target/doc &&
+  git push -fq https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git gh-pages

CONTRIBUTING.md

@@ -1,66 +0,0 @@
-# Contributing to Serde
-
-Serde welcomes contribution from everyone in the form of suggestions, bug
-reports, pull requests, and feedback. This document gives some guidance if you
-are thinking of helping us.
-
-Please reach out here in a GitHub issue or in the #serde IRC channel on
-[`irc.mozilla.org`] if we can do anything to help you contribute.
-
-[`irc.mozilla.org`]: https://wiki.mozilla.org/IRC
-
-## Submitting bug reports and feature requests
-
-Serde development is spread across lots of repositories, but this serde-rs/serde
-repository is always a safe choice for opening any issues related to Serde.
-
-When reporting a bug or asking for help, please include enough details so that
-the people helping you can reproduce the behavior you are seeing. For some tips
-on how to approach this, read about how to produce a [Minimal, Complete, and
-Verifiable example].
-
-[Minimal, Complete, and Verifiable example]: https://stackoverflow.com/help/mcve
-
-When making a feature request, please make it clear what problem you intend to
-solve with the feature, any ideas for how Serde could support solving that
-problem, any possible alternatives, and any disadvantages.
-
-## Running the test suite
-
-We encourage you to check that the test suite passes locally before submitting a
-pull request with your changes. If anything does not pass, typically it will be
-easier to iterate and fix it locally than waiting for the CI servers to run
-tests for you.
-
-##### In the [`serde`] directory
-
-```sh
-# Test all the example code in Serde documentation
-cargo test
-```
-
-##### In the [`test_suite/deps`] directory
-
-```sh
-# This is a prerequisite for running the full test suite
-cargo clean && cargo update && cargo build
-```
-
-##### In the [`test_suite`] directory
-
-```sh
-# Run the full test suite, including tests of unstable functionality
-cargo test --features unstable
-```
-
-[`serde`]: https://github.com/serde-rs/serde/tree/master/serde
-[`test_suite/deps`]: https://github.com/serde-rs/serde/tree/master/test_suite/deps
-[`test_suite`]: https://github.com/serde-rs/serde/tree/master/test_suite
-
-## Conduct
-
-In all Serde-related forums, we follow the [Rust Code of Conduct]. For
-escalation or moderation issues please contact Erick (erick.tryzelaar@gmail.com)
-instead of the Rust moderation team.
-
-[Rust Code of Conduct]: https://www.rust-lang.org/conduct.html

Cargo.toml

@@ -1,8 +0,0 @@
-[workspace]
-members = [
-    "serde",
-    "serde_derive",
-    "serde_derive_internals",
-    "serde_test",
-    "test_suite",
-]

LICENSE

@@ -0,0 +1,33 @@
+See LICENSE-APACHE and LICENSE-MIT.
+
+----
+
+bench_log is derived from https://github.com/cloudflare/goser, which has the
+following license:
+
+Copyright (c) 2013, CloudFlare, Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+* Neither the name of the author nor the
+  names of its contributors may be used to endorse or promote products
+  derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+

README.md

@@ -1,105 +1,424 @@
-# Serde   [![Build Status]][travis] [![Latest Version]][crates.io] [![Rustc Version 1.13+]][rustc]
+Serde Rust Serialization Framework
+==================================
 
-[Build Status]: https://api.travis-ci.org/serde-rs/serde.svg?branch=master
-[travis]: https://travis-ci.org/serde-rs/serde
-[Latest Version]: https://img.shields.io/crates/v/serde.svg
-[crates.io]: https://crates.io/crates/serde
-[Rustc Version 1.13+]: https://img.shields.io/badge/rustc-1.13+-lightgray.svg
-[rustc]: https://blog.rust-lang.org/2016/11/10/Rust-1.13.html
+[![Build Status](https://api.travis-ci.org/serde-rs/serde.png?branch=master)](https://travis-ci.org/serde-rs/serde)
+[![Latest Version](https://img.shields.io/crates/v/serde.svg)](https://crates.io/crates/serde)
 
-**Serde is a framework for *ser*ializing and *de*serializing Rust data structures efficiently and generically.**
+Serde is a powerful framework that enables serialization libraries to
+generically serialize Rust data structures without the overhead of runtime type
+information. In many situations, the handshake protocol between serializers and
+serializees can be completely optimized away, leaving Serde to perform roughly
+the same speed as a hand written serializer for a specific type.
 
----
+Documentation is available at http://serde-rs.github.io/serde/serde
 
-You may be looking for:
+Making a Type Serializable
+==========================
 
-- [An overview of Serde](https://serde.rs/)
-- [Data formats supported by Serde](https://serde.rs/#data-formats)
-- [Setting up `#[derive(Serialize, Deserialize)]`](https://serde.rs/codegen.html)
-- [Examples](https://serde.rs/examples.html)
-- [API documentation](https://docs.serde.rs/serde/)
-- [Release notes](https://github.com/serde-rs/serde/releases)
-
-## Serde in action
-
-<details>
-<summary>
-Click to show Cargo.toml.
-<a href="https://play.rust-lang.org/?gist=9003c5b88c1f4989941925d7190c6eec" target="_blank">Run this code in the playground.</a>
-</summary>
-
-```toml
-[dependencies]
-
-# The core APIs, including the Serialize and Deserialize traits. Always
-# required when using Serde.
-serde = "1.0"
-
-# Support for #[derive(Serialize, Deserialize)]. Required if you want Serde
-# to work for structs and enums defined in your crate.
-serde_derive = "1.0"
-
-# Each data format lives in its own crate; the sample code below uses JSON
-# but you may be using a different one.
-serde_json = "1.0"
-```
-
-</details>
-<p></p>
+The simplest way to make a type serializable is to use the `serde_macros`
+syntax extension, which comes with a `#[derive(Serialize, Deserialize)]`
+annotation, which automatically generates implementations of 
+[Serialize](http://serde-rs.github.io/serde/serde/ser/trait.Serialize.html)
+and
+[Deserialize](http://serde-rs.github.io/serde/serde/de/trait.Deserialize.html)
+for the annotated type:
 
 ```rust
-#[macro_use]
-extern crate serde_derive;
+#![feature(custom_derive, plugin)]
+#![plugin(serde_macros)]
 
 extern crate serde;
-extern crate serde_json;
 
-#[derive(Serialize, Deserialize, Debug)]
+...
+
+#[derive(Serialize, Deserialize)]
+struct Point {
+    x: i32,
+    y: i32,
+}
+```
+
+Serde bundles a high performance JSON serializer and deserializer,
+[serde::json](http://serde-rs.github.io/serde/serde/json/index.html),
+which comes with the helper functions
+[to_string](http://serde-rs.github.io/serde/serde/json/ser/fn.to_string.html)
+and
+[from_str](http://serde-rs.github.io/serde/serde/json/de/fn.from_str.html)
+that make it easy to go to and from JSON:
+
+```rust
+use serde::json;
+
+...
+
+let point = Point { x: 1, y: 2 };
+let serialized_point = json::to_string(&point).unwrap();
+
+println!("{}", serialized_point); // prints: {"x":1,"y":2}
+
+let deserialize_point: Point = json::from_str(&serialized_point).unwrap();
+```
+
+[serde::json](http://serde-rs.github.io/serde/serde/json/index.html) also
+supports a generic
+[Value](http://serde-rs.github.io/serde/serde/json/value/enum.Value.html)
+type, which can represent any JSON value. Also, any
+[Serialize](http://serde-rs.github.io/serde/serde/ser/trait.Serialize.html)
+and
+[Deserialize](http://serde-rs.github.io/serde/serde/de/trait.Deserialize.html)
+can be converted into a 
+[Value](http://serde-rs.github.io/serde/serde/json/value/enum.Value.html)
+with the methods
+[to_value](http://serde-rs.github.io/serde/serde/json/value/fn.to_value.html)
+and
+[from_value](http://serde-rs.github.io/serde/serde/json/value/fn.from_value.html):
+
+```rust
+let point = Point { x: 1, y: 2 };
+let point_value = json::to_value(&point).unwrap();
+
+println!("{}", point_value.find("x")); // prints: Some(1)
+
+let deserialize_point: Point = json::from_value(point_value).unwrap();
+```
+
+Serialization without Macros
+============================
+
+Under the covers, Serde extensively uses the Visitor pattern to thread state
+between the
+[Serializer](http://serde-rs.github.io/serde/serde/ser/trait.Serializer.html)
+and
+[Serialize](http://serde-rs.github.io/serde/serde/ser/trait.Serialize.html)
+without the two having specific information about each other's concrete type.
+This has many of the same benefits as frameworks that use runtime type
+information without the overhead.  In fact, when compiling with optimizations,
+Rust is able to remove most or all the visitor state, and generate code that's
+nearly as fast as a hand written serializer format for a specific type.
+
+To see it in action, lets look at how a simple type like `i32` is serialized.
+The
+[Serializer](http://serde-rs.github.io/serde/serde/ser/trait.Serializer.html)
+is threaded through the type:
+
+```rust
+impl serde::Serialize for i32 {
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: serde::Serializer,
+    {
+        serializer.visit_i32(*self)
+    }
+}
+```
+
+As you can see it's pretty simple. More complex types like `BTreeMap` need to
+pass a
+[MapVisitor](http://serde-rs.github.io/serde/serde/ser/trait.MapVisitor.html)
+to the 
+[Serializer](http://serde-rs.github.io/serde/serde/ser/trait.Serializer.html)
+in order to walk through the type:
+
+```rust
+impl<K, V> Serialize for BTreeMap<K, V>
+    where K: Serialize + Ord,
+          V: Serialize,
+{
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: Serializer,
+    {
+        serializer.visit_map(MapIteratorVisitor::new(self.iter(), Some(self.len())))
+    }
+}
+
+pub struct MapIteratorVisitor<Iter> {
+    iter: Iter,
+    len: Option<usize>,
+}
+
+impl<K, V, Iter> MapIteratorVisitor<Iter>
+    where Iter: Iterator<Item=(K, V)>
+{
+    #[inline]
+    pub fn new(iter: Iter, len: Option<usize>) -> MapIteratorVisitor<Iter> {
+        MapIteratorVisitor {
+            iter: iter,
+            len: len,
+        }
+    }
+}
+
+impl<K, V, I> MapVisitor for MapIteratorVisitor<I>
+    where K: Serialize,
+          V: Serialize,
+          I: Iterator<Item=(K, V)>,
+{
+    #[inline]
+    fn visit<S>(&mut self, serializer: &mut S) -> Result<Option<()>, S::Error>
+        where S: Serializer,
+    {
+        match self.iter.next() {
+            Some((key, value)) => {
+                let value = try!(serializer.visit_map_elt(key, value));
+                Ok(Some(value))
+            }
+            None => Ok(None)
+        }
+    }
+
+    #[inline]
+    fn len(&self) -> Option<usize> {
+        self.len
+    }
+}
+```
+
+Serializing structs follow this same pattern. In fact, structs are represented
+as a named map. It's visitor uses a simple state machine to iterate through all
+the fields:
+
+```rust
 struct Point {
     x: i32,
     y: i32,
 }
 
-fn main() {
-    let point = Point { x: 1, y: 2 };
+impl serde::Serialize for Point {
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: serde::Serializer
+    {
+        serializer.visit_named_map("Point", PointMapVisitor {
+            value: self,
+            state: 0,
+        })
+    }
+}
 
-    // Convert the Point to a JSON string.
-    let serialized = serde_json::to_string(&point).unwrap();
+struct PointMapVisitor<'a> {
+    value: &'a Point,
+    state: u8,
+}
 
-    // Prints serialized = {"x":1,"y":2}
-    println!("serialized = {}", serialized);
-
-    // Convert the JSON string back to a Point.
-    let deserialized: Point = serde_json::from_str(&serialized).unwrap();
-
-    // Prints deserialized = Point { x: 1, y: 2 }
-    println!("deserialized = {:?}", deserialized);
+impl<'a> serde::ser::MapVisitor for PointMapVisitor<'a> {
+    fn visit<S>(&mut self, serializer: &mut S) -> Result<Option<()>, S::Error>
+        where S: serde::Serializer
+    {
+        match self.state {
+            0 => {
+                self.state += 1;
+                Ok(Some(try!(serializer.visit_map_elt("x", &self.value.x))))
+            }
+            1 => {
+                self.state += 1;
+                Ok(Some(try!(serializer.visit_map_elt("y", &self.value.y))))
+            }
+            _ => {
+                Ok(None)
+            }
+        }
+    }
 }
 ```
 
-## Getting help
+Deserialization without Macros
+==============================
 
-Serde developers live in the #serde channel on [`irc.mozilla.org`][irc]. The
-\#rust channel is also a good resource with generally faster response time but
-less specific knowledge about Serde. If IRC is not your thing or you don't get a
-good response, we are happy to respond to [GitHub issues][issues] as well.
+Deserialization is a little more complicated since there's a bit more error
+handling that needs to occur. Let's start with the simple `i32`
+[Deserialize](http://serde-rs.github.io/serde/serde/de/trait.Deserialize.html)
+implementation. It passes a
+[Visitor](http://serde-rs.github.io/serde/serde/de/trait.Visitor.html) to the
+[Deserializer](http://serde-rs.github.io/serde/serde/de/trait.Deserializer.html).
+The [Visitor](http://serde-rs.github.io/serde/serde/de/trait.Visitor.html)
+can create the `i32` from a variety of different types:
 
-[irc]: https://wiki.mozilla.org/IRC
-[issues]: https://github.com/serde-rs/serde/issues/new/choose
+```rust
+impl Deserialize for i32 {
+    fn deserialize<D>(deserializer: &mut D) -> Result<i32, D::Error>
+        where D: serde::Deserializer,
+    {
+        deserializer.visit(I32Visitor)
+    }
+}
 
-## License
+struct I32Visitor;
 
-Serde is licensed under either of
+impl serde::de::Visitor for I32Visitor {
+    type Value = i32;
 
- * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
-   http://www.apache.org/licenses/LICENSE-2.0)
- * MIT license ([LICENSE-MIT](LICENSE-MIT) or
-   http://opensource.org/licenses/MIT)
+    fn visit_i16<E>(&mut self, value: i16) -> Result<i16, E>
+        where E: Error,
+    {
+        self.visit_i32(value as i32)
+    }
 
-at your option.
+    fn visit_i32<E>(&mut self, value: i32) -> Result<i32, E>
+        where E: Error,
+    {
+        Ok(value)
+    }
 
-### Contribution
+    ...
 
-Unless you explicitly state otherwise, any contribution intentionally submitted
-for inclusion in Serde by you, as defined in the Apache-2.0 license, shall be
-dual licensed as above, without any additional terms or conditions.
+```
+
+Since it's possible for this type to get passed an unexpected type, we need a
+way to error out. This is done by way of the
+[Error](http://serde-rs.github.io/serde/serde/de/trait.Error.html) trait,
+which allows a 
+[Deserialize](http://serde-rs.github.io/serde/serde/de/trait.Deserialize.html)
+to generate an error for a few common error conditions. Here's how it could be used:
+
+```rust
+    ...
+
+    fn visit_string<E>(&mut self, _: String) -> Result<i32, E>
+        where E: Error,
+    {
+        Err(serde::de::Error::syntax_error())
+    }
+
+    ...
+
+```
+
+Maps follow a similar pattern as before, and use a
+[MapVisitor](http://serde-rs.github.io/serde/serde/de/trait.MapVisitor.html)
+to walk through the values generated by the 
+[Deserializer](http://serde-rs.github.io/serde/serde/de/trait.Deserializer.html).
+
+```rust
+impl<K, V> serde::Deserialize for BTreeMap<K, V>
+    where K: serde::Deserialize + Eq + Ord,
+          V: serde::Deserialize,
+{
+    fn deserialize<D>(deserializer: &mut D) -> Result<BTreeMap<K, V>, D::Error>
+        where D: serde::Deserializer,
+    {
+        deserializer.visit(BTreeMapVisitor::new())
+    }
+}
+
+pub struct BTreeMapVisitor<K, V> {
+    marker: PhantomData<BTreeMap<K, V>>,
+}
+
+impl<K, V> BTreeMapVisitor<K, V> {
+    pub fn new() -> Self {
+        BTreeMapVisitor {
+            marker: PhantomData,
+        }
+    }
+}
+
+impl<K, V> serde::de::Visitor for BTreeMapVisitor<K, V>
+    where K: serde::de::Deserialize + Ord,
+          V: serde::de::Deserialize
+{
+    type Value = BTreeMap<K, V>;
+
+    fn visit_unit<E>(&mut self) -> Result<BTreeMap<K, V>, E>
+        where E: Error,
+    {
+        Ok(BTreeMap::new())
+    }
+
+    fn visit_map<V_>(&mut self, mut visitor: V_) -> Result<BTreeMap<K, V>, V_::Error>
+        where V_: MapVisitor,
+    {
+        let mut values = BTreeMap::new();
+
+        while let Some((key, value)) = try!(visitor.visit()) {
+            values.insert(key, value);
+        }
+
+        try!(visitor.end());
+
+        Ok(values)
+    }
+}
+
+```
+
+Deserializing structs goes a step further in order to support not allocating a
+`String` to hold the field names. This is done by custom field enum that
+deserializes an enum variant from a string. So for our `Point` example from
+before, we need to generate:
+
+```rust
+enum PointField {
+    X,
+    Y,
+}
+
+impl serde::Deserialize for PointField {
+    fn deserialize<D>(deserializer: &mut D) -> Result<PointField, D::Error>
+        where D: serde::de::Deserializer
+    {
+        struct FieldVisitor;
+
+        impl serde::de::Visitor for FieldVisitor {
+            type Value = Field;
+
+            fn visit_str<E>(&mut self, value: &str) -> Result<PointField, E>
+                where E: serde::de::Error
+            {
+                match value {
+                    "x" => Ok(Field::X),
+                    "y" => Ok(Field::Y),
+                    _ => Err(serde::de::Error::syntax_error()),
+                }
+            }
+        }
+
+        deserializer.visit(FieldVisitor)
+    }
+}
+```
+
+This is then used in our actual deserializer:
+
+```rust
+impl serde::Deserialize for Point {
+    fn deserialize<D>(deserializer: &mut D) -> Result<Point, D::Error>
+        where D: serde::de::Deserializer
+    {
+        deserializer.visit_named_map("Point", PointVisitor)
+    }
+}
+
+struct PointVisitor;
+
+impl serde::de::Visitor for PointVisitor {
+    type Value = Point;
+
+    fn visit_map<V>(&mut self, mut visitor: V) -> Result<Point, V::Error>
+        where V: serde::de::MapVisitor
+    {
+        let mut x = None;
+        let mut y = None;
+
+        loop {
+            match try!(visitor.visit_key()) {
+                Some(Field::X) => { x = Some(try!(visitor.visit_value())); }
+                Some(Field::Y) => { y = Some(try!(visitor.visit_value())); }
+                None => { break; }
+            }
+        }
+
+        let x = match x {
+            Some(x) => x,
+            None => try!(visitor.missing_field("x")),
+        };
+
+        let y = match y {
+            Some(y) => y,
+            None => try!(visitor.missing_field("y")),
+        };
+
+        try!(visitor.end());
+
+        Ok(Point{ x: x, y: y })
+    }
+}
+```

appveyor.yml

@@ -1,17 +0,0 @@
-environment:
-  matrix:
-    - APPVEYOR_RUST_CHANNEL: stable
-    - APPVEYOR_RUST_CHANNEL: nightly
-
-install:
-  # Install rust, x86_64-pc-windows-msvc host
-  - curl -sSf -o rustup-init.exe https://win.rustup.rs/
-  - rustup-init.exe -y --default-host x86_64-pc-windows-msvc --default-toolchain %APPVEYOR_RUST_CHANNEL%
-  - set PATH=C:\msys64\usr\bin;%PATH%;C:\Users\appveyor\.cargo\bin
-  - rustc -vV
-  - cargo -vV
-
-build: false
-
-test_script:
-  - sh -c 'PATH=`rustc --print sysroot`/bin:$PATH ./travis.sh'

crates-io.md

@@ -1,56 +0,0 @@
-<!-- Serde readme rendered on crates.io -->
-
-**Serde is a framework for *ser*ializing and *de*serializing Rust data structures efficiently and generically.**
-
----
-
-You may be looking for:
-
-- [An overview of Serde](https://serde.rs/)
-- [Data formats supported by Serde](https://serde.rs/#data-formats)
-- [Setting up `#[derive(Serialize, Deserialize)]`](https://serde.rs/codegen.html)
-- [Examples](https://serde.rs/examples.html)
-- [API documentation](https://docs.serde.rs/serde/)
-- [Release notes](https://github.com/serde-rs/serde/releases)
-
-## Serde in action
-
-```rust
-#[macro_use]
-extern crate serde_derive;
-
-extern crate serde;
-extern crate serde_json;
-
-#[derive(Serialize, Deserialize, Debug)]
-struct Point {
-    x: i32,
-    y: i32,
-}
-
-fn main() {
-    let point = Point { x: 1, y: 2 };
-
-    // Convert the Point to a JSON string.
-    let serialized = serde_json::to_string(&point).unwrap();
-
-    // Prints serialized = {"x":1,"y":2}
-    println!("serialized = {}", serialized);
-
-    // Convert the JSON string back to a Point.
-    let deserialized: Point = serde_json::from_str(&serialized).unwrap();
-
-    // Prints deserialized = Point { x: 1, y: 2 }
-    println!("deserialized = {:?}", deserialized);
-}
-```
-
-## Getting help
-
-Serde developers live in the #serde channel on [`irc.mozilla.org`][irc]. The
-\#rust channel is also a good resource with generally faster response time but
-less specific knowledge about Serde. If IRC is not your thing or you don't get a
-good response, we are happy to respond to [GitHub issues][issues] as well.
-
-[irc]: https://wiki.mozilla.org/IRC
-[issues]: https://github.com/serde-rs/serde/issues/new/choose

rustfmt.toml

@@ -1 +0,0 @@
-error_on_line_overflow = false

serde/Cargo.toml

@@ -1,80 +1,13 @@
 [package]
 name = "serde"
-version = "1.0.77" # remember to update html_root_url
-authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
+version = "0.4.2"
+authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A generic serialization/deserialization framework"
-homepage = "https://serde.rs"
 repository = "https://github.com/serde-rs/serde"
-documentation = "https://docs.serde.rs/serde/"
-keywords = ["serde", "serialization", "no_std"]
-categories = ["encoding"]
-readme = "crates-io.md"
-include = ["Cargo.toml", "build.rs", "src/**/*.rs", "crates-io.md", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
-build = "build.rs"
-
-[badges]
-travis-ci = { repository = "serde-rs/serde" }
-appveyor = { repository = "serde-rs/serde" }
+documentation = "http://serde-rs.github.io/serde/serde"
+readme = "../README.md"
+keywords = ["serialization"]
 
 [dependencies]
-serde_derive = { version = "1.0", optional = true, path = "../serde_derive" }
-
-[dev-dependencies]
-serde_derive = { version = "1.0", path = "../serde_derive" }
-
-
-### FEATURES #################################################################
-
-[features]
-default = ["std"]
-
-# Re-export the derive(Serialize, Deserialize) macros. This is intended for
-# library crates that provide optional Serde impls behind a Cargo cfg of their
-# own.
-#
-# Mainly this is a workaround for limitations associated with
-# rust-lang/cargo#1286 in which a library crate cannot use one "serde" cfg in
-# Cargo to enable dependencies on both serde and serde_derive crates.
-#
-# The recommended way to provide optional Serde support that requires derive is
-# as follows. In particular, please do not name your library's Serde feature
-# anything other than "serde".
-#
-#     [dependencies]
-#     serde = { version = "1.0", optional = true, features = ["derive"] }
-#
-# Within the library, these optional Serde derives would be written like this.
-#
-#     #[cfg(feature = "serde")]
-#     #[macro_use]
-#     extern crate serde;
-#
-#     #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#     struct ...
-#
-derive = ["serde_derive"]
-
-# Provide impls for common standard library types like Vec<T> and HashMap<K, V>.
-# Requires a dependency on the Rust standard library.
-std = []
-
-# Provide impls for types that require unstable functionality. For tracking and
-# discussion of unstable functionality please refer to this issue:
-#
-#    https://github.com/serde-rs/serde/issues/812
-unstable = []
-
-# Provide impls for types in the Rust core allocation and collections library
-# including String, Box<T>, Vec<T>, and Cow<T>. This is a subset of std but may
-# be enabled without depending on all of std.
-#
-# Requires a dependency on the unstable core allocation library:
-#
-#    https://doc.rust-lang.org/alloc/
-alloc = ["unstable"]
-
-# Opt into impls for Rc<T> and Arc<T>. Serializing and deserializing these types
-# does not preserve identity and may result in multiple copies of the same data.
-# Be sure that this is what you want before enabling this feature.
-rc = []
+num = "*"

serde/LICENSE-APACHE

@@ -1 +0,0 @@
-../LICENSE-APACHE

serde/LICENSE-MIT

@@ -1 +0,0 @@
-../LICENSE-MIT

serde/README.md

@@ -1 +0,0 @@
-../README.md

serde/build.rs

@@ -1,90 +0,0 @@
-use std::env;
-use std::process::Command;
-use std::str::{self, FromStr};
-
-// The rustc-cfg strings below are *not* public API. Please let us know by
-// opening a GitHub issue if your build environment requires some way to enable
-// these cfgs other than by executing our build script.
-fn main() {
-    let minor = match rustc_minor_version() {
-        Some(minor) => minor,
-        None => return,
-    };
-
-    let target = env::var("TARGET").unwrap();
-    let emscripten = target == "asmjs-unknown-emscripten" || target == "wasm32-unknown-emscripten";
-
-    // CString::into_boxed_c_str stabilized in Rust 1.20:
-    // https://doc.rust-lang.org/std/ffi/struct.CString.html#method.into_boxed_c_str
-    if minor >= 20 {
-        println!("cargo:rustc-cfg=de_boxed_c_str");
-    }
-
-    // From<Box<T>> for Rc<T> / Arc<T> stabilized in Rust 1.21:
-    // https://doc.rust-lang.org/std/rc/struct.Rc.html#impl-From<Box<T>>
-    // https://doc.rust-lang.org/std/sync/struct.Arc.html#impl-From<Box<T>>
-    if minor >= 21 {
-        println!("cargo:rustc-cfg=de_rc_dst");
-    }
-
-    // Duration available in core since Rust 1.25:
-    // https://blog.rust-lang.org/2018/03/29/Rust-1.25.html#library-stabilizations
-    if minor >= 25 {
-        println!("cargo:rustc-cfg=core_duration");
-    }
-
-    // 128-bit integers stabilized in Rust 1.26:
-    // https://blog.rust-lang.org/2018/05/10/Rust-1.26.html
-    //
-    // Disabled on Emscripten targets as Emscripten doesn't
-    // currently support integers larger than 64 bits.
-    if minor >= 26 && !emscripten {
-        println!("cargo:rustc-cfg=integer128");
-    }
-
-    // Inclusive ranges methods stabilized in Rust 1.27:
-    // https://github.com/rust-lang/rust/pull/50758
-    if minor >= 27 {
-        println!("cargo:rustc-cfg=range_inclusive");
-    }
-
-    // Non-zero integers stabilized in Rust 1.28:
-    // https://github.com/rust-lang/rust/pull/50808
-    if minor >= 28 {
-        println!("cargo:rustc-cfg=num_nonzero");
-    }
-}
-
-fn rustc_minor_version() -> Option<u32> {
-    let rustc = match env::var_os("RUSTC") {
-        Some(rustc) => rustc,
-        None => return None,
-    };
-
-    let output = match Command::new(rustc).arg("--version").output() {
-        Ok(output) => output,
-        Err(_) => return None,
-    };
-
-    let version = match str::from_utf8(&output.stdout) {
-        Ok(version) => version,
-        Err(_) => return None,
-    };
-
-    // Temporary workaround to support the old 1.26-dev compiler on docs.rs.
-    if version.contains("0eb87c9bf") {
-        return Some(25);
-    }
-
-    let mut pieces = version.split('.');
-    if pieces.next() != Some("rustc 1") {
-        return None;
-    }
-
-    let next = match pieces.next() {
-        Some(next) => next,
-        None => return None,
-    };
-
-    u32::from_str(next).ok()
-}

serde/crates-io.md

@@ -1 +0,0 @@
-../crates-io.md

serde/src/buf.rs

@@ -0,0 +1,94 @@
+use std::cmp;
+use std::io;
+use std::slice;
+
+trait IntoBufRead {
+    type IntoBuf: io::BufRead + BufReadExt;
+
+    fn into_buf_read(self) -> Self::IntoBuf;
+}
+
+trait BufReadExt {
+    fn get_buf(&self) -> &[u8];
+    fn read_u8(&mut self) -> io::Result<Option<u8>>;
+}
+
+struct SliceReader<'a> {
+    buf: &'a [u8],
+}
+
+impl<'a> io::Read for SliceReader<'a> {
+    #[inline]
+    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+        let amt = cmp::min(buf.len(), self.buf.len());
+        let (a, b) = self.buf.split_at(amt);
+        slice::bytes::copy_memory(buf, a);
+        *self.buf = b;
+        Ok(amt)
+    }
+}
+
+impl<'a> io::BufRead for SliceReader<'a> {
+    fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) }
+    fn consume(&mut self, amt: usize) { *self.buf = &self.buf[amt..]; }
+}
+
+impl<'a> BufReadExt for SliceReader<'a> {
+    fn get_buf(&self) -> &[u8] { self.buf }
+    fn read_u8(&mut self) -> io::Result<Option<u8>> {
+        let byte = self.buf.get(0);
+        *self.buf = &self.buf[1..];
+        byte
+    }
+}
+
+struct BufReader<R> {
+    inner: R,
+    buf: io::Cursor<Vec<u8>>,
+}
+
+impl<R> BufReader<R> where R: io::Read {
+    fn new(inner: R) -> Self {
+        BufferedReader::with_capacity(io::DEFAULT_BUF_SIZE, inner)
+    }
+
+    fn new(cap: usize, inner: R) -> Self {
+        BufferedReader {
+            inner: inner,
+            buf: io::Cursor::new(Vec::with_capacity(cap)),
+        }
+    }
+
+    fn into_inner(self) -> R {
+        self.inner
+    }
+}
+
+impl<R> Read for BufReader<R> where R: io::Read {
+    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+        // If we don't have any buffered data and we're doing a massive read
+        // (larger than our internal buffer), bypass our internal buffer
+        // entirely.
+        if self.buf.get_ref().len() == self.buf.position() as usize &&
+            buf.len() >= self.buf.get_ref().capacity() {
+            return self.inner.read(buf);
+        }
+        try!(self.fill_buf());
+        self.buf.read(buf)
+    }
+}
+
+impl<R> BufReadExt for BufReader<R> {
+    fn get_buf(&self) -> &[u8] {
+        self.buf.get_ref()
+    }
+
+    fn read_u8(&mut self) -> io::Result<Option<u8>> {
+        if self.buf.get_ref().len() == self.buf.position() as usize {
+
+        }
+        let byte = self.buf.get(0);
+        *self.buf = &self.buf[1..];
+        byte
+    }
+}

serde/src/bytes.rs

@@ -0,0 +1,213 @@
+//! Helper module to enable serializing bytes more efficiently
+
+use std::ops;
+use std::fmt;
+use std::ascii;
+
+use ser;
+use de;
+
+///////////////////////////////////////////////////////////////////////////////
+
+/// `Bytes` wraps a `&[u8]` in order to serialize into a byte array.
+#[derive(Clone, Copy, Eq, Hash, PartialEq, PartialOrd, Ord)]
+pub struct Bytes<'a> {
+    bytes: &'a [u8],
+}
+
+impl<'a> fmt::Debug for Bytes<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "b\"{}\"", escape_bytestring(self.bytes))
+    }
+}
+
+impl<'a> From<&'a [u8]> for Bytes<'a> {
+    fn from(bytes: &'a [u8]) -> Self {
+        Bytes {
+            bytes: bytes,
+        }
+    }
+}
+
+impl<'a> From<&'a Vec<u8>> for Bytes<'a> {
+    fn from(bytes: &'a Vec<u8>) -> Self {
+        Bytes {
+            bytes: &bytes,
+        }
+    }
+}
+
+impl<'a> Into<&'a [u8]> for Bytes<'a> {
+    fn into(self) -> &'a [u8] {
+        self.bytes
+    }
+}
+
+impl<'a> ops::Deref for Bytes<'a> {
+    type Target = [u8];
+
+    fn deref(&self) -> &[u8] { self.bytes }
+}
+
+impl<'a> ser::Serialize for Bytes<'a> {
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: ser::Serializer
+    {
+        serializer.visit_bytes(self.bytes)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+/// `ByteBuf` wraps a `Vec<u8>` in order to hook into serialize and from deserialize a byte array.
+#[derive(Clone, Eq, Hash, PartialEq, PartialOrd, Ord)]
+pub struct ByteBuf {
+    bytes: Vec<u8>,
+}
+
+impl ByteBuf {
+    pub fn new() -> Self {
+        ByteBuf {
+            bytes: Vec::new(),
+        }
+    }
+
+    pub fn with_capacity(cap: usize) -> Self {
+        ByteBuf {
+            bytes: Vec::with_capacity(cap)
+        }
+    }
+}
+
+impl fmt::Debug for ByteBuf {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "b\"{}\"", escape_bytestring(self.bytes.as_ref()))
+    }
+}
+
+impl Into<Vec<u8>> for ByteBuf {
+    fn into(self) -> Vec<u8> {
+        self.bytes
+    }
+}
+
+impl From<Vec<u8>> for ByteBuf {
+    fn from(bytes: Vec<u8>) -> Self {
+        ByteBuf {
+            bytes: bytes,
+        }
+    }
+}
+
+impl AsRef<Vec<u8>> for ByteBuf {
+    fn as_ref(&self) -> &Vec<u8> {
+        &self.bytes
+    }
+}
+
+impl AsRef<[u8]> for ByteBuf {
+    fn as_ref(&self) -> &[u8] {
+        &self.bytes
+    }
+}
+
+impl AsMut<Vec<u8>> for ByteBuf {
+    fn as_mut(&mut self) -> &mut Vec<u8> {
+        &mut self.bytes
+    }
+}
+
+impl AsMut<[u8]> for ByteBuf {
+    fn as_mut(&mut self) -> &mut [u8] {
+        &mut self.bytes
+    }
+}
+
+impl ops::Deref for ByteBuf {
+    type Target = [u8];
+
+    fn deref(&self) -> &[u8] { &self.bytes[..] }
+}
+
+impl ops::DerefMut for ByteBuf {
+    fn deref_mut(&mut self) -> &mut [u8] { &mut self.bytes[..] }
+}
+
+impl ser::Serialize for ByteBuf {
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: ser::Serializer
+    {
+        serializer.visit_bytes(&self)
+    }
+}
+
+pub struct ByteBufVisitor;
+
+impl de::Visitor for ByteBufVisitor {
+    type Value = ByteBuf;
+
+    #[inline]
+    fn visit_unit<E>(&mut self) -> Result<ByteBuf, E>
+        where E: de::Error,
+    {
+        Ok(ByteBuf {
+            bytes: Vec::new(),
+        })
+    }
+
+    #[inline]
+    fn visit_seq<V>(&mut self, mut visitor: V) -> Result<ByteBuf, V::Error>
+        where V: de::SeqVisitor,
+    {
+        let (len, _) = visitor.size_hint();
+        let mut values = Vec::with_capacity(len);
+
+        while let Some(value) = try!(visitor.visit()) {
+            values.push(value);
+        }
+
+        try!(visitor.end());
+
+        Ok(ByteBuf {
+            bytes: values,
+        })
+    }
+
+    #[inline]
+    fn visit_bytes<E>(&mut self, v: &[u8]) -> Result<ByteBuf, E>
+        where E: de::Error,
+    {
+        self.visit_byte_buf(v.to_vec())
+    }
+
+    #[inline]
+    fn visit_byte_buf<E>(&mut self, v: Vec<u8>) -> Result<ByteBuf, E>
+        where E: de::Error,
+    {
+        Ok(ByteBuf {
+            bytes: v,
+        })
+    }
+}
+
+impl de::Deserialize for ByteBuf {
+    #[inline]
+    fn deserialize<D>(deserializer: &mut D) -> Result<ByteBuf, D::Error>
+        where D: de::Deserializer
+    {
+        deserializer.visit_bytes(ByteBufVisitor)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+fn escape_bytestring(bytes: &[u8]) -> String {
+    let mut result = String::new();
+    for &b in bytes {
+        for esc in ascii::escape_default(b) {
+            result.push(esc as char);
+        }
+    }
+    result
+}

serde/src/de/from_primitive.rs

@@ -1,268 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use lib::*;
-
-macro_rules! int_to_int {
-    ($dst:ident, $n:ident) => {
-        if $dst::min_value() as i64 <= $n as i64 && $n as i64 <= $dst::max_value() as i64 {
-            Some($n as $dst)
-        } else {
-            None
-        }
-    };
-}
-
-macro_rules! int_to_uint {
-    ($dst:ident, $n:ident) => {
-        if 0 <= $n && $n as u64 <= $dst::max_value() as u64 {
-            Some($n as $dst)
-        } else {
-            None
-        }
-    };
-}
-
-macro_rules! uint_to {
-    ($dst:ident, $n:ident) => {
-        if $n as u64 <= $dst::max_value() as u64 {
-            Some($n as $dst)
-        } else {
-            None
-        }
-    };
-}
-
-pub trait FromPrimitive: Sized {
-    fn from_i8(n: i8) -> Option<Self>;
-    fn from_i16(n: i16) -> Option<Self>;
-    fn from_i32(n: i32) -> Option<Self>;
-    fn from_i64(n: i64) -> Option<Self>;
-    fn from_u8(n: u8) -> Option<Self>;
-    fn from_u16(n: u16) -> Option<Self>;
-    fn from_u32(n: u32) -> Option<Self>;
-    fn from_u64(n: u64) -> Option<Self>;
-}
-
-macro_rules! impl_from_primitive_for_int {
-    ($t:ident) => {
-        impl FromPrimitive for $t {
-            #[inline]
-            fn from_i8(n: i8) -> Option<Self> {
-                int_to_int!($t, n)
-            }
-            #[inline]
-            fn from_i16(n: i16) -> Option<Self> {
-                int_to_int!($t, n)
-            }
-            #[inline]
-            fn from_i32(n: i32) -> Option<Self> {
-                int_to_int!($t, n)
-            }
-            #[inline]
-            fn from_i64(n: i64) -> Option<Self> {
-                int_to_int!($t, n)
-            }
-            #[inline]
-            fn from_u8(n: u8) -> Option<Self> {
-                uint_to!($t, n)
-            }
-            #[inline]
-            fn from_u16(n: u16) -> Option<Self> {
-                uint_to!($t, n)
-            }
-            #[inline]
-            fn from_u32(n: u32) -> Option<Self> {
-                uint_to!($t, n)
-            }
-            #[inline]
-            fn from_u64(n: u64) -> Option<Self> {
-                uint_to!($t, n)
-            }
-        }
-    };
-}
-
-macro_rules! impl_from_primitive_for_uint {
-    ($t:ident) => {
-        impl FromPrimitive for $t {
-            #[inline]
-            fn from_i8(n: i8) -> Option<Self> {
-                int_to_uint!($t, n)
-            }
-            #[inline]
-            fn from_i16(n: i16) -> Option<Self> {
-                int_to_uint!($t, n)
-            }
-            #[inline]
-            fn from_i32(n: i32) -> Option<Self> {
-                int_to_uint!($t, n)
-            }
-            #[inline]
-            fn from_i64(n: i64) -> Option<Self> {
-                int_to_uint!($t, n)
-            }
-            #[inline]
-            fn from_u8(n: u8) -> Option<Self> {
-                uint_to!($t, n)
-            }
-            #[inline]
-            fn from_u16(n: u16) -> Option<Self> {
-                uint_to!($t, n)
-            }
-            #[inline]
-            fn from_u32(n: u32) -> Option<Self> {
-                uint_to!($t, n)
-            }
-            #[inline]
-            fn from_u64(n: u64) -> Option<Self> {
-                uint_to!($t, n)
-            }
-        }
-    };
-}
-
-macro_rules! impl_from_primitive_for_float {
-    ($t:ident) => {
-        impl FromPrimitive for $t {
-            #[inline]
-            fn from_i8(n: i8) -> Option<Self> {
-                Some(n as Self)
-            }
-            #[inline]
-            fn from_i16(n: i16) -> Option<Self> {
-                Some(n as Self)
-            }
-            #[inline]
-            fn from_i32(n: i32) -> Option<Self> {
-                Some(n as Self)
-            }
-            #[inline]
-            fn from_i64(n: i64) -> Option<Self> {
-                Some(n as Self)
-            }
-            #[inline]
-            fn from_u8(n: u8) -> Option<Self> {
-                Some(n as Self)
-            }
-            #[inline]
-            fn from_u16(n: u16) -> Option<Self> {
-                Some(n as Self)
-            }
-            #[inline]
-            fn from_u32(n: u32) -> Option<Self> {
-                Some(n as Self)
-            }
-            #[inline]
-            fn from_u64(n: u64) -> Option<Self> {
-                Some(n as Self)
-            }
-        }
-    };
-}
-
-impl_from_primitive_for_int!(isize);
-impl_from_primitive_for_int!(i8);
-impl_from_primitive_for_int!(i16);
-impl_from_primitive_for_int!(i32);
-impl_from_primitive_for_int!(i64);
-impl_from_primitive_for_uint!(usize);
-impl_from_primitive_for_uint!(u8);
-impl_from_primitive_for_uint!(u16);
-impl_from_primitive_for_uint!(u32);
-impl_from_primitive_for_uint!(u64);
-impl_from_primitive_for_float!(f32);
-impl_from_primitive_for_float!(f64);
-
-serde_if_integer128! {
-    impl FromPrimitive for i128 {
-        #[inline]
-        fn from_i8(n: i8) -> Option<Self> {
-            Some(n as i128)
-        }
-        #[inline]
-        fn from_i16(n: i16) -> Option<Self> {
-            Some(n as i128)
-        }
-        #[inline]
-        fn from_i32(n: i32) -> Option<Self> {
-            Some(n as i128)
-        }
-        #[inline]
-        fn from_i64(n: i64) -> Option<Self> {
-            Some(n as i128)
-        }
-        #[inline]
-        fn from_u8(n: u8) -> Option<Self> {
-            Some(n as i128)
-        }
-        #[inline]
-        fn from_u16(n: u16) -> Option<Self> {
-            Some(n as i128)
-        }
-        #[inline]
-        fn from_u32(n: u32) -> Option<Self> {
-            Some(n as i128)
-        }
-        #[inline]
-        fn from_u64(n: u64) -> Option<Self> {
-            Some(n as i128)
-        }
-    }
-
-    impl FromPrimitive for u128 {
-        #[inline]
-        fn from_i8(n: i8) -> Option<Self> {
-            if n >= 0 {
-                Some(n as u128)
-            } else {
-                None
-            }
-        }
-        #[inline]
-        fn from_i16(n: i16) -> Option<Self> {
-            if n >= 0 {
-                Some(n as u128)
-            } else {
-                None
-            }
-        }
-        #[inline]
-        fn from_i32(n: i32) -> Option<Self> {
-            if n >= 0 {
-                Some(n as u128)
-            } else {
-                None
-            }
-        }
-        #[inline]
-        fn from_i64(n: i64) -> Option<Self> {
-            if n >= 0 {
-                Some(n as u128)
-            } else {
-                None
-            }
-        }
-        #[inline]
-        fn from_u8(n: u8) -> Option<Self> {
-            Some(n as u128)
-        }
-        #[inline]
-        fn from_u16(n: u16) -> Option<Self> {
-            Some(n as u128)
-        }
-        #[inline]
-        fn from_u32(n: u32) -> Option<Self> {
-            Some(n as u128)
-        }
-        #[inline]
-        fn from_u64(n: u64) -> Option<Self> {
-            Some(n as u128)
-        }
-    }
-}

serde/src/de/ignored_any.rs

@@ -1,226 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use lib::*;
-
-use de::{Deserialize, Deserializer, Error, MapAccess, SeqAccess, Visitor};
-
-/// An efficient way of discarding data from a deserializer.
-///
-/// Think of this like `serde_json::Value` in that it can be deserialized from
-/// any type, except that it does not store any information about the data that
-/// gets deserialized.
-///
-/// ```rust
-/// use std::fmt;
-/// use std::marker::PhantomData;
-///
-/// use serde::de::{
-///     self, Deserialize, DeserializeSeed, Deserializer, IgnoredAny, SeqAccess, Visitor,
-/// };
-///
-/// /// A seed that can be used to deserialize only the `n`th element of a sequence
-/// /// while efficiently discarding elements of any type before or after index `n`.
-/// ///
-/// /// For example to deserialize only the element at index 3:
-/// ///
-/// /// ```rust
-/// /// NthElement::new(3).deserialize(deserializer)
-/// /// ```
-/// pub struct NthElement<T> {
-///     n: usize,
-///     marker: PhantomData<T>,
-/// }
-///
-/// impl<T> NthElement<T> {
-///     pub fn new(n: usize) -> Self {
-///         NthElement {
-///             n: n,
-///             marker: PhantomData,
-///         }
-///     }
-/// }
-///
-/// impl<'de, T> Visitor<'de> for NthElement<T>
-/// where
-///     T: Deserialize<'de>,
-/// {
-///     type Value = T;
-///
-///     fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-///         write!(
-///             formatter,
-///             "a sequence in which we care about element {}",
-///             self.n
-///         )
-///     }
-///
-///     fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-///     where
-///         A: SeqAccess<'de>,
-///     {
-///         // Skip over the first `n` elements.
-///         for i in 0..self.n {
-///             // It is an error if the sequence ends before we get to element `n`.
-///             if seq.next_element::<IgnoredAny>()?.is_none() {
-///                 return Err(de::Error::invalid_length(i, &self));
-///             }
-///         }
-///
-///         // Deserialize the one we care about.
-///         let nth = match seq.next_element()? {
-///             Some(nth) => nth,
-///             None => {
-///                 return Err(de::Error::invalid_length(self.n, &self));
-///             }
-///         };
-///
-///         // Skip over any remaining elements in the sequence after `n`.
-///         while let Some(IgnoredAny) = seq.next_element()? {
-///             // ignore
-///         }
-///
-///         Ok(nth)
-///     }
-/// }
-///
-/// impl<'de, T> DeserializeSeed<'de> for NthElement<T>
-/// where
-///     T: Deserialize<'de>,
-/// {
-///     type Value = T;
-///
-///     fn deserialize<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
-///     where
-///         D: Deserializer<'de>,
-///     {
-///         deserializer.deserialize_seq(self)
-///     }
-/// }
-///
-/// # fn example<'de, D>(deserializer: D) -> Result<(), D::Error>
-/// # where
-/// #     D: Deserializer<'de>,
-/// # {
-/// // Deserialize only the sequence element at index 3 from this deserializer.
-/// // The element at index 3 is required to be a string. Elements before and
-/// // after index 3 are allowed to be of any type.
-/// let s: String = NthElement::new(3).deserialize(deserializer)?;
-/// #     Ok(())
-/// # }
-/// ```
-#[derive(Copy, Clone, Debug, Default)]
-pub struct IgnoredAny;
-
-impl<'de> Visitor<'de> for IgnoredAny {
-    type Value = IgnoredAny;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("anything at all")
-    }
-
-    #[inline]
-    fn visit_bool<E>(self, x: bool) -> Result<Self::Value, E> {
-        let _ = x;
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_i64<E>(self, x: i64) -> Result<Self::Value, E> {
-        let _ = x;
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_u64<E>(self, x: u64) -> Result<Self::Value, E> {
-        let _ = x;
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_f64<E>(self, x: f64) -> Result<Self::Value, E> {
-        let _ = x;
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_str<E>(self, s: &str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        let _ = s;
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_none<E>(self) -> Result<Self::Value, E> {
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_some<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        IgnoredAny::deserialize(deserializer)
-    }
-
-    #[inline]
-    fn visit_newtype_struct<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        IgnoredAny::deserialize(deserializer)
-    }
-
-    #[inline]
-    fn visit_unit<E>(self) -> Result<Self::Value, E> {
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-    where
-        A: SeqAccess<'de>,
-    {
-        while let Some(IgnoredAny) = try!(seq.next_element()) {
-            // Gobble
-        }
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
-    where
-        A: MapAccess<'de>,
-    {
-        while let Some((IgnoredAny, IgnoredAny)) = try!(map.next_entry()) {
-            // Gobble
-        }
-        Ok(IgnoredAny)
-    }
-
-    #[inline]
-    fn visit_bytes<E>(self, bytes: &[u8]) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        let _ = bytes;
-        Ok(IgnoredAny)
-    }
-}
-
-impl<'de> Deserialize<'de> for IgnoredAny {
-    #[inline]
-    fn deserialize<D>(deserializer: D) -> Result<IgnoredAny, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_ignored_any(IgnoredAny)
-    }
-}

serde/src/de/utf8.rs

@@ -1,54 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use lib::*;
-
-const TAG_CONT: u8 = 0b1000_0000;
-const TAG_TWO_B: u8 = 0b1100_0000;
-const TAG_THREE_B: u8 = 0b1110_0000;
-const TAG_FOUR_B: u8 = 0b1111_0000;
-const MAX_ONE_B: u32 = 0x80;
-const MAX_TWO_B: u32 = 0x800;
-const MAX_THREE_B: u32 = 0x10000;
-
-#[inline]
-pub fn encode(c: char) -> Encode {
-    let code = c as u32;
-    let mut buf = [0; 4];
-    let pos = if code < MAX_ONE_B {
-        buf[3] = code as u8;
-        3
-    } else if code < MAX_TWO_B {
-        buf[2] = (code >> 6 & 0x1F) as u8 | TAG_TWO_B;
-        buf[3] = (code & 0x3F) as u8 | TAG_CONT;
-        2
-    } else if code < MAX_THREE_B {
-        buf[1] = (code >> 12 & 0x0F) as u8 | TAG_THREE_B;
-        buf[2] = (code >> 6 & 0x3F) as u8 | TAG_CONT;
-        buf[3] = (code & 0x3F) as u8 | TAG_CONT;
-        1
-    } else {
-        buf[0] = (code >> 18 & 0x07) as u8 | TAG_FOUR_B;
-        buf[1] = (code >> 12 & 0x3F) as u8 | TAG_CONT;
-        buf[2] = (code >> 6 & 0x3F) as u8 | TAG_CONT;
-        buf[3] = (code & 0x3F) as u8 | TAG_CONT;
-        0
-    };
-    Encode { buf: buf, pos: pos }
-}
-
-pub struct Encode {
-    buf: [u8; 4],
-    pos: usize,
-}
-
-impl Encode {
-    pub fn as_str(&self) -> &str {
-        str::from_utf8(&self.buf[self.pos..]).unwrap()
-    }
-}

serde/src/export.rs

@@ -1,44 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-pub use lib::clone::Clone;
-pub use lib::convert::{From, Into};
-pub use lib::default::Default;
-pub use lib::fmt::{self, Formatter};
-pub use lib::marker::PhantomData;
-pub use lib::option::Option::{self, None, Some};
-pub use lib::result::Result::{self, Err, Ok};
-
-pub use self::string::from_utf8_lossy;
-
-#[cfg(any(feature = "alloc", feature = "std"))]
-pub use lib::Vec;
-
-mod string {
-    use lib::*;
-
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    pub fn from_utf8_lossy(bytes: &[u8]) -> Cow<str> {
-        String::from_utf8_lossy(bytes)
-    }
-
-    // The generated code calls this like:
-    //
-    //     let value = &_serde::export::from_utf8_lossy(bytes);
-    //     Err(_serde::de::Error::unknown_variant(value, VARIANTS))
-    //
-    // so it is okay for the return type to be different from the std case as long
-    // as the above works.
-    #[cfg(not(any(feature = "std", feature = "alloc")))]
-    pub fn from_utf8_lossy(bytes: &[u8]) -> &str {
-        // Three unicode replacement characters if it fails. They look like a
-        // white-on-black question mark. The user will recognize it as invalid
-        // UTF-8.
-        str::from_utf8(bytes).unwrap_or("\u{fffd}\u{fffd}\u{fffd}")
-    }
-}

serde/src/integer128.rs

@@ -1,86 +0,0 @@
-/// Conditional compilation depending on whether Serde is built with support for
-/// 128-bit integers.
-///
-/// Data formats that wish to support Rust compiler versions older than 1.26 may
-/// place the i128 / u128 methods of their Serializer and Deserializer behind
-/// this macro.
-///
-/// Data formats that require a minimum Rust compiler version of at least 1.26
-/// do not need to bother with this macro and may assume support for 128-bit
-/// integers.
-///
-/// ```rust
-/// #[macro_use]
-/// extern crate serde;
-///
-/// use serde::Serializer;
-/// # use serde::private::ser::Error;
-/// #
-/// # struct MySerializer;
-///
-/// impl Serializer for MySerializer {
-///     type Ok = ();
-///     type Error = Error;
-///
-///     fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error> {
-///         /* ... */
-/// #         unimplemented!()
-///     }
-///
-///     /* ... */
-///
-///     serde_if_integer128! {
-///         fn serialize_i128(self, v: i128) -> Result<Self::Ok, Self::Error> {
-///             /* ... */
-/// #             unimplemented!()
-///         }
-///
-///         fn serialize_u128(self, v: u128) -> Result<Self::Ok, Self::Error> {
-///             /* ... */
-/// #             unimplemented!()
-///         }
-///     }
-/// #
-/// #     __serialize_unimplemented! {
-/// #         bool i8 i16 i32 u8 u16 u32 u64 f32 f64 char str bytes none some
-/// #         unit unit_struct unit_variant newtype_struct newtype_variant seq
-/// #         tuple tuple_struct tuple_variant map struct struct_variant
-/// #     }
-/// }
-/// #
-/// # fn main() {}
-/// ```
-///
-/// When Serde is built with support for 128-bit integers, this macro expands
-/// transparently into just the input tokens.
-///
-/// ```rust
-/// macro_rules! serde_if_integer128 {
-///     ($($tt:tt)*) => {
-///         $($tt)*
-///     };
-/// }
-/// ```
-///
-/// When built without support for 128-bit integers, this macro expands to
-/// nothing.
-///
-/// ```rust
-/// macro_rules! serde_if_integer128 {
-///     ($($tt:tt)*) => {};
-/// }
-/// ```
-#[cfg(integer128)]
-#[macro_export]
-macro_rules! serde_if_integer128 {
-    ($($tt:tt)*) => {
-        $($tt)*
-    };
-}
-
-#[cfg(not(integer128))]
-#[macro_export]
-#[doc(hidden)]
-macro_rules! serde_if_integer128 {
-    ($($tt:tt)*) => {};
-}

serde/src/iter.rs

@@ -0,0 +1,57 @@
+use std::io;
+use std::iter::Peekable;
+
+pub struct LineColIterator<Iter: Iterator<Item=io::Result<u8>>> {
+    iter: Iter,
+    line: usize,
+    col: usize,
+}
+
+impl<Iter: Iterator<Item=io::Result<u8>>> LineColIterator<Iter> {
+    pub fn new(iter: Iter) -> LineColIterator<Iter> {
+        LineColIterator {
+            iter: iter,
+            line: 1,
+            col: 0,
+        }
+    }
+
+    /// Report the current line inside the iterator.
+    pub fn line(&self) -> usize { self.line }
+
+    /// Report the current column inside the iterator.
+    pub fn col(&self) -> usize { self.col }
+
+    /// Gets a reference to the underlying iterator.
+    pub fn get_ref(&self) -> &Iter { &self.iter }
+
+    /// Gets a mutable reference to the underlying iterator.
+    pub fn get_mut(&mut self) -> &mut Iter { &mut self.iter }
+
+    /// Unwraps this `LineColIterator`, returning the underlying iterator.
+    pub fn into_inner(self) -> Iter { self.iter }
+}
+
+impl<Iter: Iterator<Item=io::Result<u8>>> LineColIterator<Peekable<Iter>> {
+    /// peeks at the next value
+    pub fn peek(&mut self) -> Option<&io::Result<u8>> { self.iter.peek() }
+}
+
+impl<Iter: Iterator<Item=io::Result<u8>>> Iterator for LineColIterator<Iter> {
+    type Item = io::Result<u8>;
+    fn next(&mut self) -> Option<io::Result<u8>> {
+        match self.iter.next() {
+            None => None,
+            Some(Ok(b'\n')) => {
+                self.line += 1;
+                self.col = 0;
+                Some(Ok(b'\n'))
+            },
+            Some(Ok(c)) => {
+                self.col += 1;
+                Some(Ok(c))
+            },
+            Some(Err(e)) => Some(Err(e)),
+        }
+    }
+}

serde/src/json/builder.rs

@@ -0,0 +1,84 @@
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::collections::BTreeMap;
+
+use ser::{self, Serialize};
+use json::value::{self, Value};
+
+pub struct ArrayBuilder {
+    array: Vec<Value>,
+}
+
+impl ArrayBuilder {
+    pub fn new() -> ArrayBuilder {
+        ArrayBuilder { array: Vec::new() }
+    }
+
+    pub fn unwrap(self) -> Value {
+        Value::Array(self.array)
+    }
+
+    pub fn push<T: ser::Serialize>(mut self, v: T) -> ArrayBuilder {
+        self.array.push(value::to_value(&v));
+        self
+    }
+
+    pub fn push_array<F>(mut self, f: F) -> ArrayBuilder where
+        F: FnOnce(ArrayBuilder) -> ArrayBuilder
+    {
+        let builder = ArrayBuilder::new();
+        self.array.push(f(builder).unwrap());
+        self
+    }
+
+    pub fn push_object<F>(mut self, f: F) -> ArrayBuilder where
+        F: FnOnce(ObjectBuilder) -> ObjectBuilder
+    {
+        let builder = ObjectBuilder::new();
+        self.array.push(f(builder).unwrap());
+        self
+    }
+}
+
+pub struct ObjectBuilder {
+    object: BTreeMap<String, Value>,
+}
+
+impl ObjectBuilder {
+    pub fn new() -> ObjectBuilder {
+        ObjectBuilder { object: BTreeMap::new() }
+    }
+
+    pub fn unwrap(self) -> Value {
+        Value::Object(self.object)
+    }
+
+    pub fn insert<V: ser::Serialize>(mut self, k: String, v: V) -> ObjectBuilder {
+        self.object.insert(k, value::to_value(&v));
+        self
+    }
+
+    pub fn insert_array<F>(mut self, key: String, f: F) -> ObjectBuilder where
+        F: FnOnce(ArrayBuilder) -> ArrayBuilder
+    {
+        let builder = ArrayBuilder::new();
+        self.object.insert(key, f(builder).unwrap());
+        self
+    }
+
+    pub fn insert_object<F>(mut self, key: String, f: F) -> ObjectBuilder where
+        F: FnOnce(ObjectBuilder) -> ObjectBuilder
+    {
+        let builder = ObjectBuilder::new();
+        self.object.insert(key, f(builder).unwrap());
+        self
+    }
+}

serde/src/json/de.rs

@@ -0,0 +1,694 @@
+use std::char;
+use std::i32;
+use std::io;
+use std::str;
+
+use de;
+use iter::LineColIterator;
+
+use super::error::{Error, ErrorCode};
+
+pub struct Deserializer<Iter: Iterator<Item=io::Result<u8>>> {
+    rdr: LineColIterator<Iter>,
+    ch: Option<u8>,
+    str_buf: Vec<u8>,
+}
+
+macro_rules! try_or_invalid {
+    ($self_:expr, $e:expr) => {
+        match $e {
+            Some(v) => v,
+            None => { return Err($self_.error(ErrorCode::InvalidNumber)); }
+        }
+    }
+}
+
+impl<Iter> Deserializer<Iter>
+    where Iter: Iterator<Item=io::Result<u8>>,
+{
+    /// Creates the JSON parser from an `std::iter::Iterator`.
+    #[inline]
+    pub fn new(rdr: Iter) -> Result<Deserializer<Iter>, Error> {
+        let mut deserializer = Deserializer {
+            rdr: LineColIterator::new(rdr),
+            ch: None,
+            str_buf: Vec::with_capacity(128),
+        };
+
+        try!(deserializer.bump());
+
+        Ok(deserializer)
+    }
+
+    #[inline]
+    pub fn end(&mut self) -> Result<(), Error> {
+        try!(self.parse_whitespace());
+        if self.eof() {
+            Ok(())
+        } else {
+            Err(self.error(ErrorCode::TrailingCharacters))
+        }
+    }
+
+    fn eof(&self) -> bool { self.ch.is_none() }
+
+    fn ch_or_null(&self) -> u8 { self.ch.unwrap_or(b'\x00') }
+
+    fn bump(&mut self) -> Result<(), Error> {
+        self.ch = match self.rdr.next() {
+            Some(Err(err)) => { return Err(Error::IoError(err)); }
+            Some(Ok(ch)) => Some(ch),
+            None => None,
+        };
+
+        Ok(())
+    }
+
+    fn next_char(&mut self) -> Result<Option<u8>, Error> {
+        try!(self.bump());
+        Ok(self.ch)
+    }
+
+    fn ch_is(&self, c: u8) -> bool {
+        self.ch == Some(c)
+    }
+
+    fn error(&mut self, reason: ErrorCode) -> Error {
+        Error::SyntaxError(reason, self.rdr.line(), self.rdr.col())
+    }
+
+    fn parse_whitespace(&mut self) -> Result<(), Error> {
+        while self.ch_is(b' ') ||
+              self.ch_is(b'\n') ||
+              self.ch_is(b'\t') ||
+              self.ch_is(b'\r') { try!(self.bump()); }
+
+        Ok(())
+    }
+
+    fn parse_value<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        try!(self.parse_whitespace());
+
+        if self.eof() {
+            return Err(self.error(ErrorCode::EOFWhileParsingValue));
+        }
+
+        let value = match self.ch_or_null() {
+            b'n' => {
+                try!(self.parse_ident(b"ull"));
+                visitor.visit_unit()
+            }
+            b't' => {
+                try!(self.parse_ident(b"rue"));
+                visitor.visit_bool(true)
+            }
+            b'f' => {
+                try!(self.parse_ident(b"alse"));
+                visitor.visit_bool(false)
+            }
+            b'0' ... b'9' | b'-' => self.parse_number(visitor),
+            b'"' => {
+                try!(self.parse_string());
+                let s = str::from_utf8(&self.str_buf).unwrap();
+                visitor.visit_str(s)
+            }
+            b'[' => {
+                try!(self.bump());
+                visitor.visit_seq(SeqVisitor::new(self))
+            }
+            b'{' => {
+                try!(self.bump());
+                visitor.visit_map(MapVisitor::new(self))
+            }
+            _ => {
+                Err(self.error(ErrorCode::ExpectedSomeValue))
+            }
+        };
+
+        match value {
+            Ok(value) => Ok(value),
+            Err(Error::SyntaxError(code, _, _)) => Err(self.error(code)),
+            Err(err) => Err(err),
+        }
+    }
+
+    fn parse_ident(&mut self, ident: &[u8]) -> Result<(), Error> {
+        for c in ident {
+            if Some(*c) != try!(self.next_char()) {
+                return Err(self.error(ErrorCode::ExpectedSomeIdent));
+            }
+        }
+
+        try!(self.bump());
+        Ok(())
+    }
+
+    fn parse_number<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        let mut neg = false;
+
+        if self.ch_is(b'-') {
+            try!(self.bump());
+            neg = true;
+        }
+
+        let res = try!(self.parse_integer());
+
+        if self.ch_is(b'.') || self.ch_is(b'e') || self.ch_is(b'E') {
+            let mut res = res as f64;
+
+            if self.ch_is(b'.') {
+                res = try!(self.parse_decimal(res));
+            }
+
+            if self.ch_is(b'e') || self.ch_is(b'E') {
+                res = try!(self.parse_exponent(res));
+            }
+
+            if neg {
+                visitor.visit_f64(-res)
+            } else {
+                visitor.visit_f64(res)
+            }
+        } else {
+            if neg {
+                let res = -(res as i64);
+
+                // Make sure we didn't underflow.
+                if res > 0 {
+                    Err(self.error(ErrorCode::InvalidNumber))
+                } else {
+                    visitor.visit_i64(res)
+                }
+            } else {
+                visitor.visit_u64(res)
+            }
+        }
+    }
+
+    fn parse_integer(&mut self) -> Result<u64, Error> {
+        let mut accum: u64 = 0;
+
+        match self.ch_or_null() {
+            b'0' => {
+                try!(self.bump());
+
+                // There can be only one leading '0'.
+                match self.ch_or_null() {
+                    b'0' ... b'9' => {
+                        return Err(self.error(ErrorCode::InvalidNumber));
+                    }
+                    _ => ()
+                }
+            },
+            b'1' ... b'9' => {
+                while !self.eof() {
+                    match self.ch_or_null() {
+                        c @ b'0' ... b'9' => {
+                            accum = try_or_invalid!(self, accum.checked_mul(10));
+                            accum = try_or_invalid!(self, accum.checked_add((c as u64) - ('0' as u64)));
+
+                            try!(self.bump());
+                        }
+                        _ => break,
+                    }
+                }
+            }
+            _ => { return Err(self.error(ErrorCode::InvalidNumber)); }
+        }
+
+        Ok(accum)
+    }
+
+    fn parse_decimal(&mut self, res: f64) -> Result<f64, Error> {
+        try!(self.bump());
+
+        // Make sure a digit follows the decimal place.
+        match self.ch_or_null() {
+            b'0' ... b'9' => (),
+             _ => { return Err(self.error(ErrorCode::InvalidNumber)); }
+        }
+
+        let mut res = res;
+        let mut dec = 1.0;
+        while !self.eof() {
+            match self.ch_or_null() {
+                c @ b'0' ... b'9' => {
+                    dec /= 10.0;
+                    res += (((c as u64) - (b'0' as u64)) as f64) * dec;
+                    try!(self.bump());
+                }
+                _ => break,
+            }
+        }
+
+        Ok(res)
+    }
+
+    fn parse_exponent(&mut self, mut res: f64) -> Result<f64, Error> {
+        try!(self.bump());
+
+        let mut exp: u64 = 0;
+        let mut neg_exp = false;
+
+        if self.ch_is(b'+') {
+            try!(self.bump());
+        } else if self.ch_is(b'-') {
+            try!(self.bump());
+            neg_exp = true;
+        }
+
+        // Make sure a digit follows the exponent place.
+        match self.ch_or_null() {
+            b'0' ... b'9' => (),
+            _ => { return Err(self.error(ErrorCode::InvalidNumber)); }
+        }
+        while !self.eof() {
+            match self.ch_or_null() {
+                c @ b'0' ... b'9' => {
+                    exp = try_or_invalid!(self, exp.checked_mul(10));
+                    exp = try_or_invalid!(self, exp.checked_add((c as u64) - (b'0' as u64)));
+
+                    try!(self.bump());
+                }
+                _ => break
+            }
+        }
+
+        let exp = if exp <= i32::MAX as u64 {
+            10_f64.powi(exp as i32)
+        } else {
+            return Err(self.error(ErrorCode::InvalidNumber));
+        };
+
+        if neg_exp {
+            res /= exp;
+        } else {
+            res *= exp;
+        }
+
+        Ok(res)
+    }
+
+    fn decode_hex_escape(&mut self) -> Result<u16, Error> {
+        let mut i = 0;
+        let mut n = 0u16;
+        while i < 4 && !self.eof() {
+            try!(self.bump());
+            n = match self.ch_or_null() {
+                c @ b'0' ... b'9' => n * 16_u16 + ((c as u16) - (b'0' as u16)),
+                b'a' | b'A' => n * 16_u16 + 10_u16,
+                b'b' | b'B' => n * 16_u16 + 11_u16,
+                b'c' | b'C' => n * 16_u16 + 12_u16,
+                b'd' | b'D' => n * 16_u16 + 13_u16,
+                b'e' | b'E' => n * 16_u16 + 14_u16,
+                b'f' | b'F' => n * 16_u16 + 15_u16,
+                _ => { return Err(self.error(ErrorCode::InvalidEscape)); }
+            };
+
+            i += 1;
+        }
+
+        // Error out if we didn't parse 4 digits.
+        if i != 4 {
+            return Err(self.error(ErrorCode::InvalidEscape));
+        }
+
+        Ok(n)
+    }
+
+    fn parse_string(&mut self) -> Result<(), Error> {
+        self.str_buf.clear();
+
+        loop {
+            let ch = match try!(self.next_char()) {
+                Some(ch) => ch,
+                None => { return Err(self.error(ErrorCode::EOFWhileParsingString)); }
+            };
+
+            match ch {
+                b'"' => {
+                    try!(self.bump());
+                    return Ok(());
+                }
+                b'\\' => {
+                    let ch = match try!(self.next_char()) {
+                        Some(ch) => ch,
+                        None => { return Err(self.error(ErrorCode::EOFWhileParsingString)); }
+                    };
+
+                    match ch {
+                        b'"' => self.str_buf.push(b'"'),
+                        b'\\' => self.str_buf.push(b'\\'),
+                        b'/' => self.str_buf.push(b'/'),
+                        b'b' => self.str_buf.push(b'\x08'),
+                        b'f' => self.str_buf.push(b'\x0c'),
+                        b'n' => self.str_buf.push(b'\n'),
+                        b'r' => self.str_buf.push(b'\r'),
+                        b't' => self.str_buf.push(b'\t'),
+                        b'u' => {
+                            let c = match try!(self.decode_hex_escape()) {
+                                0xDC00 ... 0xDFFF => {
+                                    return Err(self.error(ErrorCode::LoneLeadingSurrogateInHexEscape));
+                                }
+
+                                // Non-BMP characters are encoded as a sequence of
+                                // two hex escapes, representing UTF-16 surrogates.
+                                n1 @ 0xD800 ... 0xDBFF => {
+                                    match (try!(self.next_char()), try!(self.next_char())) {
+                                        (Some(b'\\'), Some(b'u')) => (),
+                                        _ => {
+                                            return Err(self.error(ErrorCode::UnexpectedEndOfHexEscape));
+                                        }
+                                    }
+
+                                    let n2 = try!(self.decode_hex_escape());
+
+                                    if n2 < 0xDC00 || n2 > 0xDFFF {
+                                        return Err(self.error(ErrorCode::LoneLeadingSurrogateInHexEscape));
+                                    }
+
+                                    let n = (((n1 - 0xD800) as u32) << 10 |
+                                              (n2 - 0xDC00) as u32) + 0x1_0000;
+
+                                    match char::from_u32(n as u32) {
+                                        Some(c) => c,
+                                        None => {
+                                            return Err(self.error(ErrorCode::InvalidUnicodeCodePoint));
+                                        }
+                                    }
+                                }
+
+                                n => {
+                                    match char::from_u32(n as u32) {
+                                        Some(c) => c,
+                                        None => {
+                                            return Err(self.error(ErrorCode::InvalidUnicodeCodePoint));
+                                        }
+                                    }
+                                }
+                            };
+
+                            // FIXME: this allocation is required in order to be compatible with stable
+                            // rust, which doesn't support encoding a `char` into a stack buffer.
+                            let buf = c.to_string();
+                            self.str_buf.extend(buf.bytes());
+                        }
+                        _ => {
+                            return Err(self.error(ErrorCode::InvalidEscape));
+                        }
+                    }
+                }
+                ch => {
+                    self.str_buf.push(ch);
+                }
+            }
+        }
+    }
+
+    fn parse_object_colon(&mut self) -> Result<(), Error> {
+        try!(self.parse_whitespace());
+
+        if self.ch_is(b':') {
+            try!(self.bump());
+            Ok(())
+        } else if self.eof() {
+            Err(self.error(ErrorCode::EOFWhileParsingObject))
+        } else {
+            Err(self.error(ErrorCode::ExpectedColon))
+        }
+    }
+}
+
+impl<Iter> de::Deserializer for Deserializer<Iter>
+    where Iter: Iterator<Item=io::Result<u8>>,
+{
+    type Error = Error;
+
+    #[inline]
+    fn visit<V>(&mut self, visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        self.parse_value(visitor)
+    }
+
+    #[inline]
+    fn visit_option<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        try!(self.parse_whitespace());
+
+        if self.eof() {
+            return Err(self.error(ErrorCode::EOFWhileParsingValue));
+        }
+
+        if self.ch_is(b'n') {
+            try!(self.parse_ident(b"ull"));
+            visitor.visit_none()
+        } else {
+            visitor.visit_some(self)
+        }
+    }
+
+    #[inline]
+    fn visit_enum<V>(&mut self, _name: &str, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::EnumVisitor,
+    {
+        try!(self.parse_whitespace());
+
+        if self.ch_is(b'{') {
+            try!(self.bump());
+            try!(self.parse_whitespace());
+
+            let value = {
+                try!(visitor.visit(&mut *self))
+            };
+
+            try!(self.parse_whitespace());
+
+            if self.ch_is(b'}') {
+                try!(self.bump());
+                Ok(value)
+            } else {
+                Err(self.error(ErrorCode::ExpectedSomeValue))
+            }
+        } else {
+            Err(self.error(ErrorCode::ExpectedSomeValue))
+        }
+    }
+
+    #[inline]
+    fn format() -> &'static str {
+        "json"
+    }
+}
+
+struct SeqVisitor<'a, Iter: 'a + Iterator<Item=io::Result<u8>>> {
+    de: &'a mut Deserializer<Iter>,
+    first: bool,
+}
+
+impl<'a, Iter: Iterator<Item=io::Result<u8>>> SeqVisitor<'a, Iter> {
+    fn new(de: &'a mut Deserializer<Iter>) -> Self {
+        SeqVisitor {
+            de: de,
+            first: true,
+        }
+    }
+}
+
+impl<'a, Iter> de::SeqVisitor for SeqVisitor<'a, Iter>
+    where Iter: Iterator<Item=io::Result<u8>>,
+{
+    type Error = Error;
+
+    fn visit<T>(&mut self) -> Result<Option<T>, Error>
+        where T: de::Deserialize,
+    {
+        try!(self.de.parse_whitespace());
+
+        if self.de.ch_is(b']') {
+            return Ok(None);
+        }
+
+        if self.first {
+            self.first = false;
+        } else {
+            if self.de.ch_is(b',') {
+                try!(self.de.bump());
+            } else if self.de.eof() {
+                return Err(self.de.error(ErrorCode::EOFWhileParsingList));
+            } else {
+                return Err(self.de.error(ErrorCode::ExpectedListCommaOrEnd));
+            }
+        }
+
+        let value = try!(de::Deserialize::deserialize(self.de));
+        Ok(Some(value))
+    }
+
+    fn end(&mut self) -> Result<(), Error> {
+        try!(self.de.parse_whitespace());
+
+        if self.de.ch_is(b']') {
+            self.de.bump()
+        } else if self.de.eof() {
+            Err(self.de.error(ErrorCode::EOFWhileParsingList))
+        } else {
+            Err(self.de.error(ErrorCode::TrailingCharacters))
+        }
+    }
+}
+
+struct MapVisitor<'a, Iter: 'a + Iterator<Item=io::Result<u8>>> {
+    de: &'a mut Deserializer<Iter>,
+    first: bool,
+}
+
+impl<'a, Iter: Iterator<Item=io::Result<u8>>> MapVisitor<'a, Iter> {
+    fn new(de: &'a mut Deserializer<Iter>) -> Self {
+        MapVisitor {
+            de: de,
+            first: true,
+        }
+    }
+}
+
+impl<'a, Iter> de::MapVisitor for MapVisitor<'a, Iter>
+    where Iter: Iterator<Item=io::Result<u8>>
+{
+    type Error = Error;
+
+    fn visit_key<K>(&mut self) -> Result<Option<K>, Error>
+        where K: de::Deserialize,
+    {
+        try!(self.de.parse_whitespace());
+
+        if self.de.ch_is(b'}') {
+            return Ok(None);
+        }
+
+        if self.first {
+            self.first = false;
+        } else {
+            if self.de.ch_is(b',') {
+                try!(self.de.bump());
+                try!(self.de.parse_whitespace());
+            } else if self.de.eof() {
+                return Err(self.de.error(ErrorCode::EOFWhileParsingObject));
+            } else {
+                return Err(self.de.error(ErrorCode::ExpectedObjectCommaOrEnd));
+            }
+        }
+
+        if self.de.eof() {
+            return Err(self.de.error(ErrorCode::EOFWhileParsingValue));
+        }
+
+        if !self.de.ch_is(b'"') {
+            return Err(self.de.error(ErrorCode::KeyMustBeAString));
+        }
+
+        Ok(Some(try!(de::Deserialize::deserialize(self.de))))
+    }
+
+    fn visit_value<V>(&mut self) -> Result<V, Error>
+        where V: de::Deserialize,
+    {
+        try!(self.de.parse_object_colon());
+
+        Ok(try!(de::Deserialize::deserialize(self.de)))
+    }
+
+    fn end(&mut self) -> Result<(), Error> {
+        try!(self.de.parse_whitespace());
+
+        if self.de.ch_is(b'}') {
+            try!(self.de.bump());
+            Ok(())
+        } else if self.de.eof() {
+            Err(self.de.error(ErrorCode::EOFWhileParsingObject))
+        } else {
+            Err(self.de.error(ErrorCode::TrailingCharacters))
+        }
+    }
+
+    fn missing_field<V>(&mut self, _field: &'static str) -> Result<V, Error>
+        where V: de::Deserialize,
+    {
+        let mut de = de::value::ValueDeserializer::into_deserializer(());
+        Ok(try!(de::Deserialize::deserialize(&mut de)))
+    }
+}
+
+impl<Iter> de::VariantVisitor for Deserializer<Iter>
+    where Iter: Iterator<Item=io::Result<u8>>,
+{
+    type Error = Error;
+
+    fn visit_variant<V>(&mut self) -> Result<V, Error>
+        where V: de::Deserialize
+    {
+        de::Deserialize::deserialize(self)
+    }
+
+    fn visit_unit(&mut self) -> Result<(), Error> {
+        try!(self.parse_object_colon());
+
+        de::Deserialize::deserialize(self)
+    }
+
+    fn visit_seq<V>(&mut self, visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        try!(self.parse_object_colon());
+
+        de::Deserializer::visit(self, visitor)
+    }
+
+    fn visit_map<V>(&mut self, visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        try!(self.parse_object_colon());
+
+        de::Deserializer::visit(self, visitor)
+    }
+}
+
+/// Decodes a json value from a `std::io::Read`.
+pub fn from_iter<I, T>(iter: I) -> Result<T, Error>
+    where I: Iterator<Item=io::Result<u8>>,
+          T: de::Deserialize,
+{
+    let mut de = try!(Deserializer::new(iter));
+    let value = try!(de::Deserialize::deserialize(&mut de));
+
+    // Make sure the whole stream has been consumed.
+    try!(de.end());
+    Ok(value)
+}
+
+/// Decodes a json value from a `std::io::Read`.
+pub fn from_reader<R, T>(rdr: R) -> Result<T, Error>
+    where R: io::Read,
+          T: de::Deserialize,
+{
+    from_iter(rdr.bytes())
+}
+
+/// Decodes a json value from a `&str`.
+pub fn from_slice<T>(v: &[u8]) -> Result<T, Error>
+    where T: de::Deserialize
+{
+    from_iter(v.iter().map(|byte| Ok(*byte)))
+}
+
+/// Decodes a json value from a `&str`.
+pub fn from_str<T>(s: &str) -> Result<T, Error>
+    where T: de::Deserialize
+{
+    from_slice(s.as_bytes())
+}

serde/src/json/error.rs

@@ -0,0 +1,185 @@
+use std::error;
+use std::fmt;
+use std::io;
+
+use de;
+
+/// The errors that can arise while parsing a JSON stream.
+#[derive(Clone, PartialEq)]
+pub enum ErrorCode {
+    EOFWhileParsingList,
+    EOFWhileParsingObject,
+    EOFWhileParsingString,
+    EOFWhileParsingValue,
+    ExpectedColon,
+    ExpectedConversion,
+    ExpectedEnumEnd,
+    ExpectedEnumEndToken,
+    ExpectedEnumMapStart,
+    ExpectedEnumToken,
+    ExpectedEnumVariantString,
+    ExpectedListCommaOrEnd,
+    ExpectedName,
+    ExpectedObjectCommaOrEnd,
+    ExpectedSomeIdent,
+    ExpectedSomeValue,
+    InvalidEscape,
+    InvalidNumber,
+    InvalidUnicodeCodePoint,
+    KeyMustBeAString,
+    LoneLeadingSurrogateInHexEscape,
+    UnknownField(String),
+    MissingField(&'static str),
+    NotFourDigit,
+    NotUtf8,
+    TrailingCharacters,
+    UnexpectedEndOfHexEscape,
+    UnknownVariant,
+    UnrecognizedHex,
+}
+
+impl fmt::Debug for ErrorCode {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        use std::fmt::Debug;
+
+        match *self {
+            //ErrorCode::ConversionError(ref token) => write!(f, "failed to convert {}", token),
+            ErrorCode::EOFWhileParsingList => "EOF While parsing list".fmt(f),
+            ErrorCode::EOFWhileParsingObject => "EOF While parsing object".fmt(f),
+            ErrorCode::EOFWhileParsingString => "EOF While parsing string".fmt(f),
+            ErrorCode::EOFWhileParsingValue => "EOF While parsing value".fmt(f),
+            ErrorCode::ExpectedColon => "expected `:`".fmt(f),
+            ErrorCode::ExpectedConversion => "expected conversion".fmt(f),
+            ErrorCode::ExpectedEnumEnd => "expected enum end".fmt(f),
+            ErrorCode::ExpectedEnumEndToken => "expected enum map end".fmt(f),
+            ErrorCode::ExpectedEnumMapStart => "expected enum map start".fmt(f),
+            ErrorCode::ExpectedEnumToken => "expected enum token".fmt(f),
+            ErrorCode::ExpectedEnumVariantString => "expected variant".fmt(f),
+            ErrorCode::ExpectedListCommaOrEnd => "expected `,` or `]`".fmt(f),
+            ErrorCode::ExpectedName => "expected name".fmt(f),
+            ErrorCode::ExpectedObjectCommaOrEnd => "expected `,` or `}`".fmt(f),
+            ErrorCode::ExpectedSomeIdent => "expected ident".fmt(f),
+            ErrorCode::ExpectedSomeValue => "expected value".fmt(f),
+            //ErrorCode::ExpectedTokens(ref token, tokens) => write!(f, "expected {}, found {}", tokens, token),
+            ErrorCode::InvalidEscape => "invalid escape".fmt(f),
+            ErrorCode::InvalidNumber => "invalid number".fmt(f),
+            ErrorCode::InvalidUnicodeCodePoint => "invalid unicode code point".fmt(f),
+            ErrorCode::KeyMustBeAString => "key must be a string".fmt(f),
+            ErrorCode::LoneLeadingSurrogateInHexEscape => "lone leading surrogate in hex escape".fmt(f),
+            ErrorCode::UnknownField(ref field) => write!(f, "unknown field \"{}\"", field),
+            ErrorCode::MissingField(ref field) => write!(f, "missing field \"{}\"", field),
+            ErrorCode::NotFourDigit => "invalid \\u escape (not four digits)".fmt(f),
+            ErrorCode::NotUtf8 => "contents not utf-8".fmt(f),
+            ErrorCode::TrailingCharacters => "trailing characters".fmt(f),
+            ErrorCode::UnexpectedEndOfHexEscape => "unexpected end of hex escape".fmt(f),
+            //ErrorCode::UnexpectedName(ref name) => write!(f, "unexpected name {}", name),
+            ErrorCode::UnknownVariant => "unknown variant".fmt(f),
+            ErrorCode::UnrecognizedHex => "invalid \\u escape (unrecognized hex)".fmt(f),
+        }
+    }
+}
+
+#[derive(Debug)]
+pub enum Error {
+    /// msg, line, col
+    SyntaxError(ErrorCode, usize, usize),
+    IoError(io::Error),
+    /*
+    ExpectedError(String, String),
+    */
+    MissingFieldError(&'static str),
+    /*
+    UnknownVariantError(String),
+    */
+}
+
+impl error::Error for Error {
+    fn description(&self) -> &str {
+        match *self {
+            Error::SyntaxError(..) => "syntax error",
+            Error::IoError(ref error) => error::Error::description(error),
+            /*
+            Error::ExpectedError(ref expected, _) => &expected,
+            */
+            Error::MissingFieldError(_) => "missing field",
+            /*
+            Error::UnknownVariantError(_) => "unknown variant",
+            */
+        }
+    }
+
+    fn cause(&self) -> Option<&error::Error> {
+        match *self {
+            Error::IoError(ref error) => Some(error),
+            _ => None,
+        }
+    }
+
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            Error::SyntaxError(ref code, line, col) => {
+                write!(fmt, "{:?} at line {} column {}", code, line, col)
+            }
+            Error::IoError(ref error) => fmt::Display::fmt(error, fmt),
+            /*
+            Error::ExpectedError(ref expected, ref found) => {
+                Some(format!("expected {}, found {}", expected, found))
+            }
+            */
+            Error::MissingFieldError(ref field) => {
+                write!(fmt, "missing field {}", field)
+            }
+            /*
+            Error::UnknownVariantError(ref variant) => {
+                Some(format!("unknown variant {}", variant))
+            }
+            */
+        }
+    }
+}
+
+impl From<io::Error> for Error {
+    fn from(error: io::Error) -> Error {
+        Error::IoError(error)
+    }
+}
+
+impl From<de::value::Error> for Error {
+    fn from(error: de::value::Error) -> Error {
+        match error {
+            de::value::Error::SyntaxError => {
+                de::Error::syntax_error()
+            }
+            de::value::Error::EndOfStreamError => {
+                de::Error::end_of_stream_error()
+            }
+            de::value::Error::UnknownFieldError(field) => {
+                Error::SyntaxError(ErrorCode::UnknownField(field), 0, 0)
+            }
+            de::value::Error::MissingFieldError(field) => {
+                de::Error::missing_field_error(field)
+            }
+        }
+    }
+}
+
+impl de::Error for Error {
+    fn syntax_error() -> Error {
+        Error::SyntaxError(ErrorCode::ExpectedSomeValue, 0, 0)
+    }
+
+    fn end_of_stream_error() -> Error {
+        Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 0, 0)
+    }
+
+    fn unknown_field_error(field: &str) -> Error {
+        Error::SyntaxError(ErrorCode::UnknownField(field.to_string()), 0, 0)
+    }
+
+    fn missing_field_error(field: &'static str) -> Error {
+        Error::MissingFieldError(field)
+    }
+}

serde/src/json/mod.rs

@@ -0,0 +1,113 @@
+//! JSON and serialization
+//!
+//! # What is JSON?
+//!
+//! JSON (JavaScript Object Notation) is a way to write data in JavaScript.  Like XML, it allows to
+//! encode structured data in a text format that can be easily read by humans.  Its simple syntax
+//! and native compatibility with JavaScript have made it a widely used format.
+//!
+//! Data types that can be encoded are JavaScript types (see the `serde::json:Value` enum for more
+//! details):
+//!
+//! * `Boolean`: equivalent to rust's `bool`
+//! * `I64`: equivalent to rust's `i64`
+//! * `U64`: equivalent to rust's `u64`
+//! * `F64`: equivalent to rust's `i64`
+//! * `String`: equivalent to rust's `String`
+//! * `Array`: equivalent to rust's `Vec<T>`, but also allowing objects of different types in the
+//!    same array
+//! * `Object`: equivalent to rust's `BTreeMap<String, serde::json::Value>`
+//! * `Null`
+//!
+//! An object is a series of string keys mapping to values, in `"key": value` format.  Arrays are
+//! enclosed in square brackets ([ ... ]) and objects in curly brackets ({ ... }).  A simple JSON
+//! document encoding a person, his/her age, address and phone numbers could look like
+//!
+//! ```ignore
+//! {
+//!     "FirstName": "John",
+//!     "LastName": "Doe",
+//!     "Age": 43,
+//!     "Address": {
+//!         "Street": "Downing Street 10",
+//!         "City": "London",
+//!         "Country": "Great Britain"
+//!     },
+//!     "PhoneNumbers": [
+//!         "+44 1234567",
+//!         "+44 2345678"
+//!     ]
+//! }
+//! ```
+//!
+//! # Type-based Serialization and Deserialization
+//!
+//! Serde provides a mechanism for low boilerplate serialization & deserialization of values to and
+//! from JSON via the serialization API.  To be able to serialize a piece of data, it must implement
+//! the `serde::Serialize` trait.  To be able to deserialize a piece of data, it must implement the
+//! `serde::Deserialize` trait.  Serde provides provides an annotation to automatically generate
+//! the code for these traits: `#[derive(Serialize, Deserialize)]`.
+//!
+//! The JSON API also provides an enum `serde::json::Value` and a method `to_value` to serialize
+//! objects.  A `serde::json::Value` value can be serialized as a string or buffer using the
+//! functions described above.  You can also use the `json::Serializer` object, which implements the
+//! `Serializer` trait.
+//!
+//! # Examples of use
+//!
+//! ## Parsing a `str` to `Value` and reading the result
+//!
+//! ```rust
+//! //#![feature(custom_derive, plugin)]
+//! //#![plugin(serde_macros)]
+//!
+//! extern crate serde;
+//!
+//! use serde::json::{self, Value};
+//!
+//! fn main() {
+//!     let data: Value = json::from_str("{\"foo\": 13, \"bar\": \"baz\"}").unwrap();
+//!     println!("data: {:?}", data);
+//!     // data: {"bar":"baz","foo":13}
+//!     println!("object? {}", data.is_object());
+//!     // object? true
+//!
+//!     let obj = data.as_object().unwrap();
+//!     let foo = obj.get("foo").unwrap();
+//!
+//!     println!("array? {:?}", foo.as_array());
+//!     // array? None
+//!     println!("u64? {:?}", foo.as_u64());
+//!     // u64? Some(13u64)
+//!
+//!     for (key, value) in obj.iter() {
+//!         println!("{}: {}", key, match *value {
+//!             Value::U64(v) => format!("{} (u64)", v),
+//!             Value::String(ref v) => format!("{} (string)", v),
+//!             _ => format!("other")
+//!         });
+//!     }
+//!     // bar: baz (string)
+//!     // foo: 13 (u64)
+//! }
+//! ```
+
+pub use self::de::{Deserializer, from_str};
+pub use self::error::{Error, ErrorCode};
+pub use self::ser::{
+    Serializer,
+    to_writer,
+    to_writer_pretty,
+    to_vec,
+    to_vec_pretty,
+    to_string,
+    to_string_pretty,
+    escape_str,
+};
+pub use self::value::{Value, to_value, from_value};
+
+pub mod builder;
+pub mod de;
+pub mod error;
+pub mod ser;
+pub mod value;

serde/src/json/ser.rs

@@ -0,0 +1,524 @@
+use std::io;
+use std::num::FpCategory;
+use std::string::FromUtf8Error;
+
+use ser;
+
+/// A structure for implementing serialization to JSON.
+pub struct Serializer<W, F=CompactFormatter> {
+    writer: W,
+    formatter: F,
+
+    /// `first` is used to signify if we should print a comma when we are walking through a
+    /// sequence.
+    first: bool,
+}
+
+impl<W> Serializer<W>
+    where W: io::Write,
+{
+    /// Creates a new JSON serializer.
+    #[inline]
+    pub fn new(writer: W) -> Self {
+        Serializer::with_formatter(writer, CompactFormatter)
+    }
+}
+
+impl<'a, W> Serializer<W, PrettyFormatter<'a>>
+    where W: io::Write,
+{
+    /// Creates a new JSON pretty print serializer.
+    #[inline]
+    pub fn pretty(writer: W) -> Self {
+        Serializer::with_formatter(writer, PrettyFormatter::new())
+    }
+}
+
+impl<W, F> Serializer<W, F>
+    where W: io::Write,
+          F: Formatter,
+{
+    /// Creates a new JSON visitor whose output will be written to the writer
+    /// specified.
+    #[inline]
+    pub fn with_formatter(writer: W, formatter: F) -> Self {
+        Serializer {
+            writer: writer,
+            formatter: formatter,
+            first: false,
+        }
+    }
+
+    /// Unwrap the `Writer` from the `Serializer`.
+    #[inline]
+    pub fn into_inner(self) -> W {
+        self.writer
+    }
+}
+
+impl<W, F> ser::Serializer for Serializer<W, F>
+    where W: io::Write,
+          F: Formatter,
+{
+    type Error = io::Error;
+
+    #[inline]
+    fn visit_bool(&mut self, value: bool) -> io::Result<()> {
+        if value {
+            self.writer.write_all(b"true")
+        } else {
+            self.writer.write_all(b"false")
+        }
+    }
+
+    #[inline]
+    fn visit_isize(&mut self, value: isize) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_i8(&mut self, value: i8) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_i16(&mut self, value: i16) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_i32(&mut self, value: i32) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_i64(&mut self, value: i64) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_usize(&mut self, value: usize) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_u8(&mut self, value: u8) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_u16(&mut self, value: u16) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_u32(&mut self, value: u32) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_u64(&mut self, value: u64) -> io::Result<()> {
+        write!(&mut self.writer, "{}", value)
+    }
+
+    #[inline]
+    fn visit_f32(&mut self, value: f32) -> io::Result<()> {
+        fmt_f32_or_null(&mut self.writer, value)
+    }
+
+    #[inline]
+    fn visit_f64(&mut self, value: f64) -> io::Result<()> {
+        fmt_f64_or_null(&mut self.writer, value)
+    }
+
+    #[inline]
+    fn visit_char(&mut self, value: char) -> io::Result<()> {
+        escape_char(&mut self.writer, value)
+    }
+
+    #[inline]
+    fn visit_str(&mut self, value: &str) -> io::Result<()> {
+        escape_str(&mut self.writer, value)
+    }
+
+    #[inline]
+    fn visit_none(&mut self) -> io::Result<()> {
+        self.visit_unit()
+    }
+
+    #[inline]
+    fn visit_some<V>(&mut self, value: V) -> io::Result<()>
+        where V: ser::Serialize
+    {
+        value.serialize(self)
+    }
+
+    #[inline]
+    fn visit_unit(&mut self) -> io::Result<()> {
+        self.writer.write_all(b"null")
+    }
+
+    #[inline]
+    fn visit_enum_unit(&mut self, _name: &str, variant: &str) -> io::Result<()> {
+        try!(self.formatter.open(&mut self.writer, b'{'));
+        try!(self.formatter.comma(&mut self.writer, true));
+        try!(self.visit_str(variant));
+        try!(self.formatter.colon(&mut self.writer));
+        try!(self.writer.write_all(b"[]"));
+        self.formatter.close(&mut self.writer, b'}')
+    }
+
+    #[inline]
+    fn visit_seq<V>(&mut self, mut visitor: V) -> io::Result<()>
+        where V: ser::SeqVisitor,
+    {
+        match visitor.len() {
+            Some(len) if len == 0 => {
+                self.writer.write_all(b"[]")
+            }
+            _ => {
+                try!(self.formatter.open(&mut self.writer, b'['));
+
+                self.first = true;
+
+                while let Some(()) = try!(visitor.visit(self)) { }
+
+                self.formatter.close(&mut self.writer, b']')
+            }
+        }
+
+    }
+
+    #[inline]
+    fn visit_enum_seq<V>(&mut self, _name: &str, variant: &str, visitor: V) -> io::Result<()>
+        where V: ser::SeqVisitor,
+    {
+        try!(self.formatter.open(&mut self.writer, b'{'));
+        try!(self.formatter.comma(&mut self.writer, true));
+        try!(self.visit_str(variant));
+        try!(self.formatter.colon(&mut self.writer));
+        try!(self.visit_seq(visitor));
+        self.formatter.close(&mut self.writer, b'}')
+    }
+
+    #[inline]
+    fn visit_seq_elt<T>(&mut self, value: T) -> io::Result<()>
+        where T: ser::Serialize,
+    {
+        try!(self.formatter.comma(&mut self.writer, self.first));
+        self.first = false;
+
+        value.serialize(self)
+    }
+
+    #[inline]
+    fn visit_map<V>(&mut self, mut visitor: V) -> io::Result<()>
+        where V: ser::MapVisitor,
+    {
+        match visitor.len() {
+            Some(len) if len == 0 => {
+                self.writer.write_all(b"{}")
+            }
+            _ => {
+                try!(self.formatter.open(&mut self.writer, b'{'));
+
+                self.first = true;
+
+                while let Some(()) = try!(visitor.visit(self)) { }
+
+                self.formatter.close(&mut self.writer, b'}')
+            }
+        }
+    }
+
+    #[inline]
+    fn visit_enum_map<V>(&mut self, _name: &str, variant: &str, visitor: V) -> io::Result<()>
+        where V: ser::MapVisitor,
+    {
+        try!(self.formatter.open(&mut self.writer, b'{'));
+        try!(self.formatter.comma(&mut self.writer, true));
+        try!(self.visit_str(variant));
+        try!(self.formatter.colon(&mut self.writer));
+        try!(self.visit_map(visitor));
+
+        self.formatter.close(&mut self.writer, b'}')
+    }
+
+    #[inline]
+    fn visit_map_elt<K, V>(&mut self, key: K, value: V) -> io::Result<()>
+        where K: ser::Serialize,
+              V: ser::Serialize,
+    {
+        try!(self.formatter.comma(&mut self.writer, self.first));
+        self.first = false;
+
+        try!(key.serialize(self));
+        try!(self.formatter.colon(&mut self.writer));
+        value.serialize(self)
+    }
+
+    #[inline]
+    fn format() -> &'static str {
+        "json"
+    }
+}
+
+pub trait Formatter {
+    fn open<W>(&mut self, writer: &mut W, ch: u8) -> io::Result<()>
+        where W: io::Write;
+
+    fn comma<W>(&mut self, writer: &mut W, first: bool) -> io::Result<()>
+        where W: io::Write;
+
+    fn colon<W>(&mut self, writer: &mut W) -> io::Result<()>
+        where W: io::Write;
+
+    fn close<W>(&mut self, writer: &mut W, ch: u8) -> io::Result<()>
+        where W: io::Write;
+}
+
+pub struct CompactFormatter;
+
+impl Formatter for CompactFormatter {
+    fn open<W>(&mut self, writer: &mut W, ch: u8) -> io::Result<()>
+        where W: io::Write,
+    {
+        writer.write_all(&[ch])
+    }
+
+    fn comma<W>(&mut self, writer: &mut W, first: bool) -> io::Result<()>
+        where W: io::Write,
+    {
+        if first {
+            Ok(())
+        } else {
+            writer.write_all(b",")
+        }
+    }
+
+    fn colon<W>(&mut self, writer: &mut W) -> io::Result<()>
+        where W: io::Write,
+    {
+        writer.write_all(b":")
+    }
+
+    fn close<W>(&mut self, writer: &mut W, ch: u8) -> io::Result<()>
+        where W: io::Write,
+    {
+        writer.write_all(&[ch])
+    }
+}
+
+pub struct PrettyFormatter<'a> {
+    current_indent: usize,
+    indent: &'a [u8],
+}
+
+impl<'a> PrettyFormatter<'a> {
+    fn new() -> Self {
+        PrettyFormatter::with_indent(b"  ")
+    }
+
+    fn with_indent(indent: &'a [u8]) -> Self {
+        PrettyFormatter {
+            current_indent: 0,
+            indent: indent,
+        }
+    }
+}
+
+impl<'a> Formatter for PrettyFormatter<'a> {
+    fn open<W>(&mut self, writer: &mut W, ch: u8) -> io::Result<()>
+        where W: io::Write,
+    {
+        self.current_indent += 1;
+        writer.write_all(&[ch])
+    }
+
+    fn comma<W>(&mut self, writer: &mut W, first: bool) -> io::Result<()>
+        where W: io::Write,
+    {
+        if first {
+            try!(writer.write_all(b"\n"));
+        } else {
+            try!(writer.write_all(b",\n"));
+        }
+
+        indent(writer, self.current_indent, self.indent)
+    }
+
+    fn colon<W>(&mut self, writer: &mut W) -> io::Result<()>
+        where W: io::Write,
+    {
+        writer.write_all(b": ")
+    }
+
+    fn close<W>(&mut self, writer: &mut W, ch: u8) -> io::Result<()>
+        where W: io::Write,
+    {
+        self.current_indent -= 1;
+        try!(writer.write(b"\n"));
+        try!(indent(writer, self.current_indent, self.indent));
+
+        writer.write_all(&[ch])
+    }
+}
+
+#[inline]
+pub fn escape_bytes<W>(wr: &mut W, bytes: &[u8]) -> io::Result<()>
+    where W: io::Write
+{
+    try!(wr.write_all(b"\""));
+
+    let mut start = 0;
+
+    for (i, byte) in bytes.iter().enumerate() {
+        let escaped = match *byte {
+            b'"' => b"\\\"",
+            b'\\' => b"\\\\",
+            b'\x08' => b"\\b",
+            b'\x0c' => b"\\f",
+            b'\n' => b"\\n",
+            b'\r' => b"\\r",
+            b'\t' => b"\\t",
+            _ => { continue; }
+        };
+
+        if start < i {
+            try!(wr.write_all(&bytes[start..i]));
+        }
+
+        try!(wr.write_all(escaped));
+
+        start = i + 1;
+    }
+
+    if start != bytes.len() {
+        try!(wr.write_all(&bytes[start..]));
+    }
+
+    try!(wr.write_all(b"\""));
+    Ok(())
+}
+
+#[inline]
+pub fn escape_str<W>(wr: &mut W, value: &str) -> io::Result<()>
+    where W: io::Write
+{
+    escape_bytes(wr, value.as_bytes())
+}
+
+#[inline]
+fn escape_char<W>(wr: &mut W, value: char) -> io::Result<()>
+    where W: io::Write
+{
+    // FIXME: this allocation is required in order to be compatible with stable
+    // rust, which doesn't support encoding a `char` into a stack buffer.
+    escape_bytes(wr, value.to_string().as_bytes())
+}
+
+fn fmt_f32_or_null<W>(wr: &mut W, value: f32) -> io::Result<()>
+    where W: io::Write
+{
+    match value.classify() {
+        FpCategory::Nan | FpCategory::Infinite => wr.write_all(b"null"),
+        _ => {
+            let s = format!("{:?}", value);
+            try!(wr.write_all(s.as_bytes()));
+            if !s.contains('.') {
+                try!(wr.write_all(b".0"))
+            }
+            Ok(())
+        }
+    }
+}
+
+fn fmt_f64_or_null<W>(wr: &mut W, value: f64) -> io::Result<()>
+    where W: io::Write
+{
+    match value.classify() {
+        FpCategory::Nan | FpCategory::Infinite => wr.write_all(b"null"),
+        _ => {
+            let s = format!("{:?}", value);
+            try!(wr.write_all(s.as_bytes()));
+            if !s.contains('.') {
+                try!(wr.write_all(b".0"))
+            }
+            Ok(())
+        }
+    }
+}
+
+/// Encode the specified struct into a json `[u8]` writer.
+#[inline]
+pub fn to_writer<W, T>(writer: &mut W, value: &T) -> io::Result<()>
+    where W: io::Write,
+          T: ser::Serialize,
+{
+    let mut ser = Serializer::new(writer);
+    try!(value.serialize(&mut ser));
+    Ok(())
+}
+
+/// Encode the specified struct into a json `[u8]` writer.
+#[inline]
+pub fn to_writer_pretty<W, T>(writer: &mut W, value: &T) -> io::Result<()>
+    where W: io::Write,
+          T: ser::Serialize,
+{
+    let mut ser = Serializer::pretty(writer);
+    try!(value.serialize(&mut ser));
+    Ok(())
+}
+
+/// Encode the specified struct into a json `[u8]` buffer.
+#[inline]
+pub fn to_vec<T>(value: &T) -> Vec<u8>
+    where T: ser::Serialize,
+{
+    // We are writing to a Vec, which doesn't fail. So we can ignore
+    // the error.
+    let mut writer = Vec::with_capacity(128);
+    to_writer(&mut writer, value).unwrap();
+    writer
+}
+
+/// Encode the specified struct into a json `[u8]` buffer.
+#[inline]
+pub fn to_vec_pretty<T>(value: &T) -> Vec<u8>
+    where T: ser::Serialize,
+{
+    // We are writing to a Vec, which doesn't fail. So we can ignore
+    // the error.
+    let mut writer = Vec::with_capacity(128);
+    to_writer_pretty(&mut writer, value).unwrap();
+    writer
+}
+
+/// Encode the specified struct into a json `String` buffer.
+#[inline]
+pub fn to_string<T>(value: &T) -> Result<String, FromUtf8Error>
+    where T: ser::Serialize
+{
+    let vec = to_vec(value);
+    String::from_utf8(vec)
+}
+
+/// Encode the specified struct into a json `String` buffer.
+#[inline]
+pub fn to_string_pretty<T>(value: &T) -> Result<String, FromUtf8Error>
+    where T: ser::Serialize
+{
+    let vec = to_vec_pretty(value);
+    String::from_utf8(vec)
+}
+
+fn indent<W>(wr: &mut W, n: usize, s: &[u8]) -> io::Result<()>
+    where W: io::Write,
+{
+    for _ in 0 .. n {
+        try!(wr.write_all(s));
+    }
+
+    Ok(())
+}

serde/src/json/value.rs

@@ -0,0 +1,915 @@
+use std::collections::{BTreeMap, btree_map};
+use std::fmt;
+use std::io;
+use std::str;
+use std::vec;
+
+use num::NumCast;
+
+use de;
+use ser;
+use super::error::Error;
+
+#[derive(Clone, PartialEq)]
+pub enum Value {
+    Null,
+    Bool(bool),
+    I64(i64),
+    U64(u64),
+    F64(f64),
+    String(String),
+    Array(Vec<Value>),
+    Object(BTreeMap<String, Value>),
+}
+
+impl Value {
+    /// If the `Value` is an Object, returns the value associated with the provided key.
+    /// Otherwise, returns None.
+    pub fn find<'a>(&'a self, key: &str) -> Option<&'a Value>{
+        match self {
+            &Value::Object(ref map) => map.get(key),
+            _ => None
+        }
+    }
+
+    /// Attempts to get a nested Value Object for each key in `keys`.
+    /// If any key is found not to exist, find_path will return None.
+    /// Otherwise, it will return the `Value` associated with the final key.
+    pub fn find_path<'a>(&'a self, keys: &[&str]) -> Option<&'a Value>{
+        let mut target = self;
+        for key in keys {
+            match target.find(key) {
+                Some(t) => { target = t; },
+                None => return None
+            }
+        }
+        Some(target)
+    }
+
+    /// Looks up a value by path.
+    ///
+    /// This is a convenience method that splits the path by `'.'`
+    /// and then feeds the sequence of keys into the `find_path`
+    /// method.
+    ///
+    /// ``` ignore
+    /// let obj: Value = json::from_str(r#"{"x": {"a": 1}}"#).unwrap();
+    ///
+    /// assert!(obj.lookup("x.a").unwrap() == &Value::U64(1));
+    /// ```
+    pub fn lookup<'a>(&'a self, path: &str) -> Option<&'a Value> {
+        let mut target = self;
+        for key in path.split('.') {
+            match target.find(key) {
+                Some(t) => { target = t; },
+                None => return None
+            }
+        }
+        Some(target)
+    }
+
+    /// If the `Value` is an Object, performs a depth-first search until
+    /// a value associated with the provided key is found. If no value is found
+    /// or the `Value` is not an Object, returns None.
+    pub fn search<'a>(&'a self, key: &str) -> Option<&'a Value> {
+        match self {
+            &Value::Object(ref map) => {
+                match map.get(key) {
+                    Some(json_value) => Some(json_value),
+                    None => {
+                        for (_, v) in map.iter() {
+                            match v.search(key) {
+                                x if x.is_some() => return x,
+                                _ => ()
+                            }
+                        }
+                        None
+                    }
+                }
+            },
+            _ => None
+        }
+    }
+
+    /// Returns true if the `Value` is an Object. Returns false otherwise.
+    pub fn is_object<'a>(&'a self) -> bool {
+        self.as_object().is_some()
+    }
+
+    /// If the `Value` is an Object, returns the associated BTreeMap.
+    /// Returns None otherwise.
+    pub fn as_object<'a>(&'a self) -> Option<&'a BTreeMap<String, Value>> {
+        match self {
+            &Value::Object(ref map) => Some(map),
+            _ => None
+        }
+    }
+
+    /// If the `Value` is an Object, returns the associated mutable BTreeMap.
+    /// Returns None otherwise.
+    pub fn as_object_mut<'a>(&'a mut self) -> Option<&'a mut BTreeMap<String, Value>> {
+        match self {
+            &mut Value::Object(ref mut map) => Some(map),
+            _ => None
+        }
+    }
+
+    /// Returns true if the `Value` is an Array. Returns false otherwise.
+    pub fn is_array<'a>(&'a self) -> bool {
+        self.as_array().is_some()
+    }
+
+    /// If the `Value` is an Array, returns the associated vector.
+    /// Returns None otherwise.
+    pub fn as_array<'a>(&'a self) -> Option<&'a Vec<Value>> {
+        match self {
+            &Value::Array(ref array) => Some(&*array),
+            _ => None
+        }
+    }
+
+    /// If the `Value` is an Array, returns the associated mutable vector.
+    /// Returns None otherwise.
+    pub fn as_array_mut<'a>(&'a mut self) -> Option<&'a mut Vec<Value>> {
+        match self {
+            &mut Value::Array(ref mut list) => Some(list),
+            _ => None
+        }
+    }
+
+    /// Returns true if the `Value` is a String. Returns false otherwise.
+    pub fn is_string<'a>(&'a self) -> bool {
+        self.as_string().is_some()
+    }
+
+    /// If the `Value` is a String, returns the associated str.
+    /// Returns None otherwise.
+    pub fn as_string<'a>(&'a self) -> Option<&'a str> {
+        match *self {
+            Value::String(ref s) => Some(&s),
+            _ => None
+        }
+    }
+
+    /// Returns true if the `Value` is a Number. Returns false otherwise.
+    pub fn is_number(&self) -> bool {
+        match *self {
+            Value::I64(_) | Value::U64(_) | Value::F64(_) => true,
+            _ => false,
+        }
+    }
+
+    /// Returns true if the `Value` is a i64. Returns false otherwise.
+    pub fn is_i64(&self) -> bool {
+        match *self {
+            Value::I64(_) => true,
+            _ => false,
+        }
+    }
+
+    /// Returns true if the `Value` is a u64. Returns false otherwise.
+    pub fn is_u64(&self) -> bool {
+        match *self {
+            Value::U64(_) => true,
+            _ => false,
+        }
+    }
+
+    /// Returns true if the `Value` is a f64. Returns false otherwise.
+    pub fn is_f64(&self) -> bool {
+        match *self {
+            Value::F64(_) => true,
+            _ => false,
+        }
+    }
+
+    /// If the `Value` is a number, return or cast it to a i64.
+    /// Returns None otherwise.
+    pub fn as_i64(&self) -> Option<i64> {
+        match *self {
+            Value::I64(n) => Some(n),
+            Value::U64(n) => NumCast::from(n),
+            _ => None
+        }
+    }
+
+    /// If the `Value` is a number, return or cast it to a u64.
+    /// Returns None otherwise.
+    pub fn as_u64(&self) -> Option<u64> {
+        match *self {
+            Value::I64(n) => NumCast::from(n),
+            Value::U64(n) => Some(n),
+            _ => None
+        }
+    }
+
+    /// If the `Value` is a number, return or cast it to a f64.
+    /// Returns None otherwise.
+    pub fn as_f64(&self) -> Option<f64> {
+        match *self {
+            Value::I64(n) => NumCast::from(n),
+            Value::U64(n) => NumCast::from(n),
+            Value::F64(n) => Some(n),
+            _ => None
+        }
+    }
+
+    /// Returns true if the `Value` is a Boolean. Returns false otherwise.
+    pub fn is_boolean(&self) -> bool {
+        self.as_boolean().is_some()
+    }
+
+    /// If the `Value` is a Boolean, returns the associated bool.
+    /// Returns None otherwise.
+    pub fn as_boolean(&self) -> Option<bool> {
+        match self {
+            &Value::Bool(b) => Some(b),
+            _ => None
+        }
+    }
+
+    /// Returns true if the `Value` is a Null. Returns false otherwise.
+    pub fn is_null(&self) -> bool {
+        self.as_null().is_some()
+    }
+
+    /// If the `Value` is a Null, returns ().
+    /// Returns None otherwise.
+    pub fn as_null(&self) -> Option<()> {
+        match self {
+            &Value::Null => Some(()),
+            _ => None
+        }
+    }
+}
+
+impl ser::Serialize for Value {
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: ser::Serializer,
+    {
+        match *self {
+            Value::Null => serializer.visit_unit(),
+            Value::Bool(v) => serializer.visit_bool(v),
+            Value::I64(v) => serializer.visit_i64(v),
+            Value::U64(v) => serializer.visit_u64(v),
+            Value::F64(v) => serializer.visit_f64(v),
+            Value::String(ref v) => serializer.visit_str(&v),
+            Value::Array(ref v) => v.serialize(serializer),
+            Value::Object(ref v) => v.serialize(serializer),
+        }
+    }
+}
+
+impl de::Deserialize for Value {
+    #[inline]
+    fn deserialize<D>(deserializer: &mut D) -> Result<Value, D::Error>
+        where D: de::Deserializer,
+    {
+        struct ValueVisitor;
+
+        impl de::Visitor for ValueVisitor {
+            type Value = Value;
+
+            #[inline]
+            fn visit_bool<E>(&mut self, value: bool) -> Result<Value, E> {
+                Ok(Value::Bool(value))
+            }
+
+            #[inline]
+            fn visit_i64<E>(&mut self, value: i64) -> Result<Value, E> {
+                if value < 0 {
+                    Ok(Value::I64(value))
+                } else {
+                    Ok(Value::U64(value as u64))
+                }
+            }
+
+            #[inline]
+            fn visit_u64<E>(&mut self, value: u64) -> Result<Value, E> {
+                Ok(Value::U64(value))
+            }
+
+            #[inline]
+            fn visit_f64<E>(&mut self, value: f64) -> Result<Value, E> {
+                Ok(Value::F64(value))
+            }
+
+            #[inline]
+            fn visit_str<E>(&mut self, value: &str) -> Result<Value, E>
+                where E: de::Error,
+            {
+                self.visit_string(value.to_string())
+            }
+
+            #[inline]
+            fn visit_string<E>(&mut self, value: String) -> Result<Value, E> {
+                Ok(Value::String(value))
+            }
+
+            #[inline]
+            fn visit_none<E>(&mut self) -> Result<Value, E> {
+                Ok(Value::Null)
+            }
+
+            #[inline]
+            fn visit_some<D>(&mut self, deserializer: &mut D) -> Result<Value, D::Error>
+                where D: de::Deserializer,
+            {
+                de::Deserialize::deserialize(deserializer)
+            }
+
+            #[inline]
+            fn visit_unit<E>(&mut self) -> Result<Value, E> {
+                Ok(Value::Null)
+            }
+
+            #[inline]
+            fn visit_seq<V>(&mut self, visitor: V) -> Result<Value, V::Error>
+                where V: de::SeqVisitor,
+            {
+                let values = try!(de::impls::VecVisitor::new().visit_seq(visitor));
+                Ok(Value::Array(values))
+            }
+
+            #[inline]
+            fn visit_map<V>(&mut self, visitor: V) -> Result<Value, V::Error>
+                where V: de::MapVisitor,
+            {
+                let values = try!(de::impls::BTreeMapVisitor::new().visit_map(visitor));
+                Ok(Value::Object(values))
+            }
+        }
+
+        deserializer.visit(ValueVisitor)
+    }
+}
+
+struct WriterFormatter<'a, 'b: 'a> {
+    inner: &'a mut fmt::Formatter<'b>,
+}
+
+impl<'a, 'b> io::Write for WriterFormatter<'a, 'b> {
+    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        match self.inner.write_str(str::from_utf8(buf).unwrap()) {
+            Ok(_) => Ok(buf.len()),
+            Err(_) => Err(io::Error::last_os_error()),
+        }
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+}
+
+impl fmt::Debug for Value {
+    /// Serializes a json value into a string
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let mut wr = WriterFormatter { inner: f };
+        super::ser::to_writer(&mut wr, self).map_err(|_| fmt::Error)
+    }
+}
+
+#[derive(Debug)]
+enum State {
+    Value(Value),
+    Array(Vec<Value>),
+    Object(BTreeMap<String, Value>),
+}
+
+pub struct Serializer {
+    state: Vec<State>,
+}
+
+impl Serializer {
+    pub fn new() -> Serializer {
+        Serializer {
+            state: Vec::with_capacity(4),
+        }
+    }
+
+    pub fn unwrap(mut self) -> Value {
+        match self.state.pop().unwrap() {
+            State::Value(value) => value,
+            state => panic!("expected value, found {:?}", state),
+        }
+    }
+}
+
+impl ser::Serializer for Serializer {
+    type Error = ();
+
+    #[inline]
+    fn visit_bool(&mut self, value: bool) -> Result<(), ()> {
+        self.state.push(State::Value(Value::Bool(value)));
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_i64(&mut self, value: i64) -> Result<(), ()> {
+        if value < 0 {
+            self.state.push(State::Value(Value::I64(value)));
+        } else {
+            self.state.push(State::Value(Value::U64(value as u64)));
+        }
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_u64(&mut self, value: u64) -> Result<(), ()> {
+        self.state.push(State::Value(Value::U64(value)));
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_f64(&mut self, value: f64) -> Result<(), ()> {
+        self.state.push(State::Value(Value::F64(value as f64)));
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_char(&mut self, value: char) -> Result<(), ()> {
+        self.state.push(State::Value(Value::String(value.to_string())));
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_str(&mut self, value: &str) -> Result<(), ()> {
+        self.state.push(State::Value(Value::String(value.to_string())));
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_none(&mut self) -> Result<(), ()> {
+        self.visit_unit()
+    }
+
+    #[inline]
+    fn visit_some<V>(&mut self, value: V) -> Result<(), ()>
+        where V: ser::Serialize,
+    {
+        value.serialize(self)
+    }
+
+    #[inline]
+    fn visit_unit(&mut self) -> Result<(), ()> {
+        self.state.push(State::Value(Value::Null));
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_enum_unit(&mut self, _name: &str, variant: &str) -> Result<(), ()> {
+        let mut values = BTreeMap::new();
+        values.insert(variant.to_string(), Value::Array(vec![]));
+
+        self.state.push(State::Value(Value::Object(values)));
+
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_seq<V>(&mut self, mut visitor: V) -> Result<(), ()>
+        where V: ser::SeqVisitor,
+    {
+        let len = visitor.len().unwrap_or(0);
+        let values = Vec::with_capacity(len);
+
+        self.state.push(State::Array(values));
+
+        while let Some(()) = try!(visitor.visit(self)) { }
+
+        let values = match self.state.pop().unwrap() {
+            State::Array(values) => values,
+            state => panic!("Expected array, found {:?}", state),
+        };
+
+        self.state.push(State::Value(Value::Array(values)));
+
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_enum_seq<V>(&mut self, _name: &str, variant: &str, visitor: V) -> Result<(), ()>
+        where V: ser::SeqVisitor,
+    {
+        try!(self.visit_seq(visitor));
+
+        let value = match self.state.pop().unwrap() {
+            State::Value(value) => value,
+            state => panic!("expected value, found {:?}", state),
+        };
+
+        let mut object = BTreeMap::new();
+
+        object.insert(variant.to_string(), value);
+
+        self.state.push(State::Value(Value::Object(object)));
+
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_seq_elt<T>(&mut self, value: T) -> Result<(), ()>
+        where T: ser::Serialize,
+    {
+        try!(value.serialize(self));
+
+        let value = match self.state.pop().unwrap() {
+            State::Value(value) => value,
+            state => panic!("expected value, found {:?}", state),
+        };
+
+        match *self.state.last_mut().unwrap() {
+            State::Array(ref mut values) => { values.push(value); }
+            ref state => panic!("expected array, found {:?}", state),
+        }
+
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_map<V>(&mut self, mut visitor: V) -> Result<(), ()>
+        where V: ser::MapVisitor,
+    {
+        let values = BTreeMap::new();
+
+        self.state.push(State::Object(values));
+
+        while let Some(()) = try!(visitor.visit(self)) { }
+
+        let values = match self.state.pop().unwrap() {
+            State::Object(values) => values,
+            state => panic!("expected object, found {:?}", state),
+        };
+
+        self.state.push(State::Value(Value::Object(values)));
+
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_enum_map<V>(&mut self, _name: &str, variant: &str, visitor: V) -> Result<(), ()>
+        where V: ser::MapVisitor,
+    {
+        try!(self.visit_map(visitor));
+
+        let value = match self.state.pop().unwrap() {
+            State::Value(value) => value,
+            state => panic!("expected value, found {:?}", state),
+        };
+
+        let mut object = BTreeMap::new();
+
+        object.insert(variant.to_string(), value);
+
+        self.state.push(State::Value(Value::Object(object)));
+
+        Ok(())
+    }
+
+    #[inline]
+    fn visit_map_elt<K, V>(&mut self, key: K, value: V) -> Result<(), ()>
+        where K: ser::Serialize,
+              V: ser::Serialize,
+    {
+        try!(key.serialize(self));
+
+        let key = match self.state.pop().unwrap() {
+            State::Value(Value::String(value)) => value,
+            state => panic!("expected key, found {:?}", state),
+        };
+
+        try!(value.serialize(self));
+
+        let value = match self.state.pop().unwrap() {
+            State::Value(value) => value,
+            state => panic!("expected value, found {:?}", state),
+        };
+
+        match *self.state.last_mut().unwrap() {
+            State::Object(ref mut values) => { values.insert(key, value); }
+            ref state => panic!("expected object, found {:?}", state),
+        }
+
+        Ok(())
+    }
+
+    #[inline]
+    fn format() -> &'static str {
+        "json"
+    }
+}
+
+pub struct Deserializer {
+    value: Option<Value>,
+}
+
+impl Deserializer {
+    /// Creates a new deserializer instance for deserializing the specified JSON value.
+    pub fn new(value: Value) -> Deserializer {
+        Deserializer {
+            value: Some(value),
+        }
+    }
+}
+
+impl de::Deserializer for Deserializer {
+    type Error = Error;
+
+    #[inline]
+    fn visit<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        let value = match self.value.take() {
+            Some(value) => value,
+            None => { return Err(de::Error::end_of_stream_error()); }
+        };
+
+        match value {
+            Value::Null => visitor.visit_unit(),
+            Value::Bool(v) => visitor.visit_bool(v),
+            Value::I64(v) => visitor.visit_i64(v),
+            Value::U64(v) => visitor.visit_u64(v),
+            Value::F64(v) => visitor.visit_f64(v),
+            Value::String(v) => visitor.visit_string(v),
+            Value::Array(v) => {
+                let len = v.len();
+                visitor.visit_seq(SeqDeserializer {
+                    de: self,
+                    iter: v.into_iter(),
+                    len: len,
+                })
+            }
+            Value::Object(v) => {
+                let len = v.len();
+                visitor.visit_map(MapDeserializer {
+                    de: self,
+                    iter: v.into_iter(),
+                    value: None,
+                    len: len,
+                })
+            }
+        }
+    }
+
+    #[inline]
+    fn visit_option<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        match self.value {
+            Some(Value::Null) => visitor.visit_none(),
+            Some(_) => visitor.visit_some(self),
+            None => Err(de::Error::end_of_stream_error()),
+        }
+    }
+
+    #[inline]
+    fn visit_enum<V>(&mut self, _name: &str, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::EnumVisitor,
+    {
+        let value = match self.value.take() {
+            Some(Value::Object(value)) => value,
+            Some(_) => { return Err(de::Error::syntax_error()); }
+            None => { return Err(de::Error::end_of_stream_error()); }
+        };
+
+        let mut iter = value.into_iter();
+
+        let value = match iter.next() {
+            Some((variant, Value::Array(fields))) => {
+                self.value = Some(Value::String(variant));
+
+                let len = fields.len();
+                try!(visitor.visit(SeqDeserializer {
+                    de: self,
+                    iter: fields.into_iter(),
+                    len: len,
+                }))
+            }
+            Some((variant, Value::Object(fields))) => {
+                let len = fields.len();
+                try!(visitor.visit(MapDeserializer {
+                    de: self,
+                    iter: fields.into_iter(),
+                    value: Some(Value::String(variant)),
+                    len: len,
+                }))
+            }
+            Some(_) => { return Err(de::Error::syntax_error()); }
+            None => { return Err(de::Error::syntax_error()); }
+        };
+
+        match iter.next() {
+            Some(_) => Err(de::Error::syntax_error()),
+            None => Ok(value)
+        }
+    }
+
+    #[inline]
+    fn format() -> &'static str {
+        "json"
+    }
+}
+
+struct SeqDeserializer<'a> {
+    de: &'a mut Deserializer,
+    iter: vec::IntoIter<Value>,
+    len: usize,
+}
+
+impl<'a> de::Deserializer for SeqDeserializer<'a> {
+    type Error = Error;
+
+    #[inline]
+    fn visit<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        if self.len == 0 {
+            visitor.visit_unit()
+        } else {
+            visitor.visit_seq(self)
+        }
+    }
+}
+
+impl<'a> de::SeqVisitor for SeqDeserializer<'a> {
+    type Error = Error;
+
+    fn visit<T>(&mut self) -> Result<Option<T>, Error>
+        where T: de::Deserialize
+    {
+        match self.iter.next() {
+            Some(value) => {
+                self.len -= 1;
+                self.de.value = Some(value);
+                Ok(Some(try!(de::Deserialize::deserialize(self.de))))
+            }
+            None => Ok(None),
+        }
+    }
+
+    fn end(&mut self) -> Result<(), Error> {
+        if self.len == 0 {
+            Ok(())
+        } else {
+            Err(de::Error::end_of_stream_error())
+        }
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (self.len, Some(self.len))
+    }
+}
+
+impl<'a> de::VariantVisitor for SeqDeserializer<'a> {
+    type Error = Error;
+
+    fn visit_variant<V>(&mut self) -> Result<V, Error>
+        where V: de::Deserialize,
+    {
+        de::Deserialize::deserialize(self.de)
+    }
+
+    fn visit_unit(&mut self) -> Result<(), Error>
+    {
+        de::Deserialize::deserialize(self)
+    }
+
+    fn visit_seq<V>(&mut self, visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        de::Deserializer::visit(self, visitor)
+    }
+
+    fn visit_map<V>(&mut self, visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        de::Deserializer::visit(self, visitor)
+    }
+}
+
+struct MapDeserializer<'a> {
+    de: &'a mut Deserializer,
+    iter: btree_map::IntoIter<String, Value>,
+    value: Option<Value>,
+    len: usize,
+}
+
+impl<'a> de::MapVisitor for MapDeserializer<'a> {
+    type Error = Error;
+
+    fn visit_key<T>(&mut self) -> Result<Option<T>, Error>
+        where T: de::Deserialize
+    {
+        match self.iter.next() {
+            Some((key, value)) => {
+                self.len -= 1;
+                self.value = Some(value);
+                self.de.value = Some(Value::String(key));
+                Ok(Some(try!(de::Deserialize::deserialize(self.de))))
+            }
+            None => Ok(None),
+        }
+    }
+
+    fn visit_value<T>(&mut self) -> Result<T, Error>
+        where T: de::Deserialize
+    {
+        let value = self.value.take().unwrap();
+        self.de.value = Some(value);
+        Ok(try!(de::Deserialize::deserialize(self.de)))
+    }
+
+    fn end(&mut self) -> Result<(), Error> {
+        if self.len == 0 {
+            Ok(())
+        } else {
+            Err(de::Error::end_of_stream_error())
+        }
+    }
+
+    fn missing_field<V>(&mut self, _field: &'static str) -> Result<V, Error>
+        where V: de::Deserialize,
+    {
+        // See if the type can deserialize from a unit.
+        struct UnitDeserializer;
+
+        impl de::Deserializer for UnitDeserializer {
+            type Error = Error;
+
+            fn visit<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+                where V: de::Visitor,
+            {
+                visitor.visit_unit()
+            }
+
+            fn visit_option<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+                where V: de::Visitor,
+            {
+                visitor.visit_none()
+            }
+        }
+
+        Ok(try!(de::Deserialize::deserialize(&mut UnitDeserializer)))
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (self.len, Some(self.len))
+    }
+}
+
+impl<'a> de::Deserializer for MapDeserializer<'a> {
+    type Error = Error;
+
+    #[inline]
+    fn visit<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        println!("MapDeserializer!");
+        visitor.visit_map(self)
+    }
+}
+
+impl<'a> de::VariantVisitor for MapDeserializer<'a> {
+    type Error = Error;
+
+    fn visit_variant<V>(&mut self) -> Result<V, Error>
+        where V: de::Deserialize,
+    {
+        self.de.value = self.value.take();
+        de::Deserialize::deserialize(self.de)
+    }
+
+    fn visit_unit(&mut self) -> Result<(), Error> {
+        de::Deserialize::deserialize(self)
+    }
+
+    fn visit_seq<V>(&mut self, visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        de::Deserializer::visit(self, visitor)
+    }
+
+    fn visit_map<V>(&mut self, visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        de::Deserializer::visit(self, visitor)
+    }
+}
+
+/// Shortcut function to encode a `T` into a JSON `Value`
+pub fn to_value<T>(value: &T) -> Value
+    where T: ser::Serialize
+{
+    let mut ser = Serializer::new();
+    value.serialize(&mut ser).ok().unwrap();
+    ser.unwrap()
+}
+
+/// Shortcut function to decode a JSON `Value` into a `T`
+pub fn from_value<T>(value: Value) -> Result<T, Error>
+    where T: de::Deserialize
+{
+    let mut de = Deserializer::new(value);
+    de::Deserialize::deserialize(&mut de)
+}

serde/src/lib.rs

@@ -1,304 +1,19 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! # Serde
+//! Serde Serialization Framework
 //!
-//! Serde is a framework for ***ser***ializing and ***de***serializing Rust data
-//! structures efficiently and generically.
-//!
-//! The Serde ecosystem consists of data structures that know how to serialize
-//! and deserialize themselves along with data formats that know how to
-//! serialize and deserialize other things. Serde provides the layer by which
-//! these two groups interact with each other, allowing any supported data
-//! structure to be serialized and deserialized using any supported data format.
-//!
-//! See the Serde website [https://serde.rs/] for additional documentation and
-//! usage examples.
-//!
-//! [https://serde.rs/]: https://serde.rs/
-//!
-//! ## Design
-//!
-//! Where many other languages rely on runtime reflection for serializing data,
-//! Serde is instead built on Rust's powerful trait system. A data structure
-//! that knows how to serialize and deserialize itself is one that implements
-//! Serde's `Serialize` and `Deserialize` traits (or uses Serde's derive
-//! attribute to automatically generate implementations at compile time). This
-//! avoids any overhead of reflection or runtime type information. In fact in
-//! many situations the interaction between data structure and data format can
-//! be completely optimized away by the Rust compiler, leaving Serde
-//! serialization to perform the same speed as a handwritten serializer for the
-//! specific selection of data structure and data format.
-//!
-//! ## Data formats
-//!
-//! The following is a partial list of data formats that have been implemented
-//! for Serde by the community.
-//!
-//! - [JSON], the ubiquitous JavaScript Object Notation used by many HTTP APIs.
-//! - [Bincode], a compact binary format
-//!   used for IPC within the Servo rendering engine.
-//! - [CBOR], a Concise Binary Object Representation designed for small message
-//!   size without the need for version negotiation.
-//! - [YAML], a popular human-friendly configuration language that ain't markup
-//!   language.
-//! - [MessagePack], an efficient binary format that resembles a compact JSON.
-//! - [TOML], a minimal configuration format used by [Cargo].
-//! - [Pickle], a format common in the Python world.
-//! - [Hjson], a variant of JSON designed to be readable and writable by humans.
-//! - [BSON], the data storage and network transfer format used by MongoDB.
-//! - [Avro], a binary format used within Apache Hadoop, with support for schema
-//!   definition.
-//! - [URL], the x-www-form-urlencoded format.
-//! - [XML], the flexible machine-friendly W3C standard.
-//!   *(deserialization only)*
-//! - [Envy], a way to deserialize environment variables into Rust structs.
-//!   *(deserialization only)*
-//! - [Redis], deserialize values from Redis when using [redis-rs].
-//!   *(deserialization only)*
-//!
-//! [JSON]: https://github.com/serde-rs/json
-//! [Bincode]: https://github.com/TyOverby/bincode
-//! [CBOR]: https://github.com/pyfisch/cbor
-//! [YAML]: https://github.com/dtolnay/serde-yaml
-//! [MessagePack]: https://github.com/3Hren/msgpack-rust
-//! [TOML]: https://github.com/alexcrichton/toml-rs
-//! [Pickle]: https://github.com/birkenfeld/serde-pickle
-//! [Hjson]: https://github.com/laktak/hjson-rust
-//! [BSON]: https://github.com/zonyitoo/bson-rs
-//! [Avro]: https://github.com/flavray/avro-rs
-//! [URL]: https://github.com/nox/serde_urlencoded
-//! [XML]: https://github.com/RReverser/serde-xml-rs
-//! [Envy]: https://github.com/softprops/envy
-//! [Redis]: https://github.com/OneSignal/serde-redis
-//! [Cargo]: http://doc.crates.io/manifest.html
-//! [redis-rs]: https://crates.io/crates/redis
+//! Serde is a powerful framework that enables serialization libraries to generically serialize
+//! Rust data structures without the overhead of runtime type information. In many situations, the
+//! handshake protocol between serializers and serializees can be completely optimized away,
+//! leaving serde to perform roughly the same speed as a hand written serializer for a specific
+//! type.
+#![doc(html_root_url="http://erickt.github.io/rust-serde")]
 
-////////////////////////////////////////////////////////////////////////////////
+extern crate num;
 
-// Serde types in rustdoc of other crates get linked to here.
-#![doc(html_root_url = "https://docs.rs/serde/1.0.77")]
-// Support using Serde without the standard library!
-#![cfg_attr(not(feature = "std"), no_std)]
-// Unstable functionality only if the user asks for it. For tracking and
-// discussion of these features please refer to this issue:
-//
-//    https://github.com/serde-rs/serde/issues/812
-#![cfg_attr(feature = "unstable", feature(specialization, never_type))]
-#![cfg_attr(feature = "alloc", feature(alloc))]
-#![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
-// Whitelisted clippy lints
-#![cfg_attr(
-    feature = "cargo-clippy",
-    allow(
-        cast_lossless,
-        const_static_lifetime,
-        doc_markdown,
-        linkedlist,
-        needless_pass_by_value,
-        redundant_field_names,
-        type_complexity,
-        unreadable_literal,
-        zero_prefixed_literal
-    )
-)]
-// Whitelisted clippy_pedantic lints
-#![cfg_attr(feature = "cargo-clippy", allow(
-// integer and float ser/de requires these sorts of casts
-    cast_possible_truncation,
-    cast_possible_wrap,
-    cast_precision_loss,
-    cast_sign_loss,
-// simplifies some macros
-    invalid_upcast_comparisons,
-// things are often more readable this way
-    decimal_literal_representation,
-    option_unwrap_used,
-    result_unwrap_used,
-    shadow_reuse,
-    single_match_else,
-    stutter,
-    use_self,
-// not practical
-    indexing_slicing,
-    many_single_char_names,
-    missing_docs_in_private_items,
-    similar_names,
-// alternative is not stable
-    empty_enum,
-    use_debug,
-))]
-// Blacklisted Rust lints.
-//
-// Compiler bug involving unused_imports:
-// https://github.com/rust-lang/rust/issues/51661
-#![deny(missing_docs, /*unused_imports*/)]
-
-////////////////////////////////////////////////////////////////////////////////
-
-#[cfg(feature = "alloc")]
-extern crate alloc;
-
-/// A facade around all the types we need from the `std`, `core`, and `alloc`
-/// crates. This avoids elaborate import wrangling having to happen in every
-/// module.
-mod lib {
-    mod core {
-        #[cfg(not(feature = "std"))]
-        pub use core::*;
-        #[cfg(feature = "std")]
-        pub use std::*;
-    }
-
-    pub use self::core::{cmp, iter, mem, num, slice, str};
-    pub use self::core::{f32, f64};
-    pub use self::core::{i16, i32, i64, i8, isize};
-    pub use self::core::{u16, u32, u64, u8, usize};
-
-    pub use self::core::cell::{Cell, RefCell};
-    pub use self::core::clone::{self, Clone};
-    pub use self::core::convert::{self, From, Into};
-    pub use self::core::default::{self, Default};
-    pub use self::core::fmt::{self, Debug, Display};
-    pub use self::core::marker::{self, PhantomData};
-    pub use self::core::ops::Range;
-    pub use self::core::option::{self, Option};
-    pub use self::core::result::{self, Result};
-
-    #[cfg(all(feature = "alloc", not(feature = "std")))]
-    pub use alloc::borrow::{Cow, ToOwned};
-    #[cfg(feature = "std")]
-    pub use std::borrow::{Cow, ToOwned};
-
-    #[cfg(all(feature = "alloc", not(feature = "std")))]
-    pub use alloc::string::{String, ToString};
-    #[cfg(feature = "std")]
-    pub use std::string::String;
-
-    #[cfg(all(feature = "alloc", not(feature = "std")))]
-    pub use alloc::vec::Vec;
-    #[cfg(feature = "std")]
-    pub use std::vec::Vec;
-
-    #[cfg(all(feature = "alloc", not(feature = "std")))]
-    pub use alloc::boxed::Box;
-    #[cfg(feature = "std")]
-    pub use std::boxed::Box;
-
-    #[cfg(all(feature = "rc", feature = "alloc", not(feature = "std")))]
-    pub use alloc::rc::{Rc, Weak as RcWeak};
-    #[cfg(all(feature = "rc", feature = "std"))]
-    pub use std::rc::{Rc, Weak as RcWeak};
-
-    #[cfg(all(feature = "rc", feature = "alloc", not(feature = "std")))]
-    pub use alloc::sync::{Arc, Weak as ArcWeak};
-    #[cfg(all(feature = "rc", feature = "std"))]
-    pub use std::sync::{Arc, Weak as ArcWeak};
-
-    #[cfg(all(feature = "alloc", not(feature = "std")))]
-    pub use alloc::collections::{BTreeMap, BTreeSet, BinaryHeap, LinkedList, VecDeque};
-    #[cfg(feature = "std")]
-    pub use std::collections::{BTreeMap, BTreeSet, BinaryHeap, LinkedList, VecDeque};
-
-    #[cfg(feature = "std")]
-    pub use std::{error, net};
-
-    #[cfg(feature = "std")]
-    pub use std::collections::{HashMap, HashSet};
-    #[cfg(feature = "std")]
-    pub use std::ffi::{CStr, CString, OsStr, OsString};
-    #[cfg(feature = "std")]
-    pub use std::hash::{BuildHasher, Hash};
-    #[cfg(feature = "std")]
-    pub use std::io::Write;
-    #[cfg(feature = "std")]
-    pub use std::num::Wrapping;
-    #[cfg(feature = "std")]
-    pub use std::path::{Path, PathBuf};
-    #[cfg(feature = "std")]
-    pub use std::sync::{Mutex, RwLock};
-    #[cfg(feature = "std")]
-    pub use std::time::{SystemTime, UNIX_EPOCH};
-
-    #[cfg(any(core_duration, feature = "std"))]
-    pub use self::core::time::Duration;
-
-    #[cfg(range_inclusive)]
-    pub use self::core::ops::RangeInclusive;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-#[macro_use]
-mod macros;
-
-#[macro_use]
-mod integer128;
-
-pub mod de;
-pub mod ser;
-
-#[doc(inline)]
-pub use de::{Deserialize, Deserializer};
-#[doc(inline)]
 pub use ser::{Serialize, Serializer};
+pub use de::{Deserialize, Deserializer, Error};
 
-// Generated code uses these to support no_std. Not public API.
-#[doc(hidden)]
-pub mod export;
-
-// Helpers used by generated code and doc tests. Not public API.
-#[doc(hidden)]
-pub mod private;
-
-// Re-export #[derive(Serialize, Deserialize)].
-//
-// This is a workaround for https://github.com/rust-lang/cargo/issues/1286.
-// Without this re-export, crates that put Serde derives behind a cfg_attr would
-// need to use some silly feature name that depends on both serde and
-// serde_derive.
-//
-//     [features]
-//     serde-impls = ["serde", "serde_derive"]
-//
-//     [dependencies]
-//     serde = { version = "1.0", optional = true }
-//     serde_derive = { version = "1.0", optional = true }
-//
-//     # Used like this:
-//     # #[cfg(feature = "serde-impls")]
-//     # #[macro_use]
-//     # extern crate serde_derive;
-//     #
-//     # #[cfg_attr(feature = "serde-impls", derive(Serialize, Deserialize))]
-//     # struct S { /* ... */ }
-//
-// The re-exported derives allow crates to use "serde" as the name of their
-// Serde feature which is more intuitive.
-//
-//     [dependencies]
-//     serde = { version = "1.0", optional = true, features = ["derive"] }
-//
-//     # Used like this:
-//     # #[cfg(feature = "serde")]
-//     # #[macro_use]
-//     # extern crate serde;
-//     #
-//     # #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-//     # struct S { /* ... */ }
-//
-// The reason re-exporting is not enabled by default is that disabling it would
-// be annoying for crates that provide handwritten impls or data formats. They
-// would need to disable default features and then explicitly re-enable std.
-#[cfg(feature = "serde_derive")]
-#[allow(unused_imports)]
-#[macro_use]
-extern crate serde_derive;
-#[cfg(feature = "serde_derive")]
-#[doc(hidden)]
-pub use serde_derive::*;
+pub mod bytes;
+pub mod de;
+pub mod iter;
+pub mod json;
+pub mod ser;

serde/src/macros.rs

@@ -1,256 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// Super explicit first paragraph because this shows up at the top level and
-// trips up people who are just looking for basic Serialize / Deserialize
-// documentation.
-//
-/// Helper macro when implementing the `Deserializer` part of a new data format
-/// for Serde.
-///
-/// Some [`Deserializer`] implementations for self-describing formats do not
-/// care what hint the [`Visitor`] gives them, they just want to blindly call
-/// the [`Visitor`] method corresponding to the data they can tell is in the
-/// input. This requires repetitive implementations of all the [`Deserializer`]
-/// trait methods.
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde;
-/// #
-/// # use serde::de::{value, Deserializer, Visitor};
-/// #
-/// # struct MyDeserializer;
-/// #
-/// # impl<'de> Deserializer<'de> for MyDeserializer {
-/// #     type Error = value::Error;
-/// #
-/// #     fn deserialize_any<V>(self, _: V) -> Result<V::Value, Self::Error>
-/// #     where
-/// #         V: Visitor<'de>,
-/// #     {
-/// #         unimplemented!()
-/// #     }
-/// #
-/// #[inline]
-/// fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-/// where
-///     V: Visitor<'de>,
-/// {
-///     self.deserialize_any(visitor)
-/// }
-/// #
-/// #     forward_to_deserialize_any! {
-/// #         i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
-/// #         bytes byte_buf option unit unit_struct newtype_struct seq tuple
-/// #         tuple_struct map struct enum identifier ignored_any
-/// #     }
-/// # }
-/// #
-/// # fn main() {}
-/// ```
-///
-/// The `forward_to_deserialize_any!` macro implements these simple forwarding
-/// methods so that they forward directly to [`Deserializer::deserialize_any`].
-/// You can choose which methods to forward.
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde;
-/// #
-/// # use serde::de::{value, Deserializer, Visitor};
-/// #
-/// # struct MyDeserializer;
-/// #
-/// impl<'de> Deserializer<'de> for MyDeserializer {
-/// #   type Error = value::Error;
-/// #
-///     fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-///     where
-///         V: Visitor<'de>,
-///     {
-///         /* ... */
-/// #       let _ = visitor;
-/// #       unimplemented!()
-///     }
-///
-///     forward_to_deserialize_any! {
-///         bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
-///         bytes byte_buf option unit unit_struct newtype_struct seq tuple
-///         tuple_struct map struct enum identifier ignored_any
-///     }
-/// }
-/// #
-/// # fn main() {}
-/// ```
-///
-/// The macro assumes the convention that your `Deserializer` lifetime parameter
-/// is called `'de` and that the `Visitor` type parameters on each method are
-/// called `V`. A different type parameter and a different lifetime can be
-/// specified explicitly if necessary.
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde;
-/// #
-/// # use std::marker::PhantomData;
-/// #
-/// # use serde::de::{value, Deserializer, Visitor};
-/// #
-/// # struct MyDeserializer<V>(PhantomData<V>);
-/// #
-/// # impl<'q, V> Deserializer<'q> for MyDeserializer<V> {
-/// #     type Error = value::Error;
-/// #
-/// #     fn deserialize_any<W>(self, visitor: W) -> Result<W::Value, Self::Error>
-/// #     where
-/// #         W: Visitor<'q>,
-/// #     {
-/// #         unimplemented!()
-/// #     }
-/// #
-/// forward_to_deserialize_any! {
-///     <W: Visitor<'q>>
-///     bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
-///     bytes byte_buf option unit unit_struct newtype_struct seq tuple
-///     tuple_struct map struct enum identifier ignored_any
-/// }
-/// # }
-/// #
-/// # fn main() {}
-/// ```
-///
-/// [`Deserializer`]: trait.Deserializer.html
-/// [`Visitor`]: de/trait.Visitor.html
-/// [`Deserializer::deserialize_any`]: trait.Deserializer.html#tymethod.deserialize_any
-#[macro_export(local_inner_macros)]
-macro_rules! forward_to_deserialize_any {
-    (<$visitor:ident: Visitor<$lifetime:tt>> $($func:ident)*) => {
-        $(forward_to_deserialize_any_helper!{$func<$lifetime, $visitor>})*
-    };
-    // This case must be after the previous one.
-    ($($func:ident)*) => {
-        $(forward_to_deserialize_any_helper!{$func<'de, V>})*
-    };
-}
-
-#[doc(hidden)]
-#[macro_export]
-macro_rules! forward_to_deserialize_any_method {
-    ($func:ident<$l:tt, $v:ident>($($arg:ident : $ty:ty),*)) => {
-        #[inline]
-        fn $func<$v>(self, $($arg: $ty,)* visitor: $v) -> $crate::export::Result<$v::Value, Self::Error>
-        where
-            $v: $crate::de::Visitor<$l>,
-        {
-            $(
-                let _ = $arg;
-            )*
-            self.deserialize_any(visitor)
-        }
-    };
-}
-
-#[doc(hidden)]
-#[macro_export(local_inner_macros)]
-macro_rules! forward_to_deserialize_any_helper {
-    (bool<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_bool<$l, $v>()}
-    };
-    (i8<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_i8<$l, $v>()}
-    };
-    (i16<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_i16<$l, $v>()}
-    };
-    (i32<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_i32<$l, $v>()}
-    };
-    (i64<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_i64<$l, $v>()}
-    };
-    (i128<$l:tt, $v:ident>) => {
-        serde_if_integer128! {
-            forward_to_deserialize_any_method!{deserialize_i128<$l, $v>()}
-        }
-    };
-    (u8<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_u8<$l, $v>()}
-    };
-    (u16<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_u16<$l, $v>()}
-    };
-    (u32<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_u32<$l, $v>()}
-    };
-    (u64<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_u64<$l, $v>()}
-    };
-    (u128<$l:tt, $v:ident>) => {
-        serde_if_integer128! {
-            forward_to_deserialize_any_method!{deserialize_u128<$l, $v>()}
-        }
-    };
-    (f32<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_f32<$l, $v>()}
-    };
-    (f64<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_f64<$l, $v>()}
-    };
-    (char<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_char<$l, $v>()}
-    };
-    (str<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_str<$l, $v>()}
-    };
-    (string<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_string<$l, $v>()}
-    };
-    (bytes<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_bytes<$l, $v>()}
-    };
-    (byte_buf<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_byte_buf<$l, $v>()}
-    };
-    (option<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_option<$l, $v>()}
-    };
-    (unit<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_unit<$l, $v>()}
-    };
-    (unit_struct<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_unit_struct<$l, $v>(name: &'static str)}
-    };
-    (newtype_struct<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_newtype_struct<$l, $v>(name: &'static str)}
-    };
-    (seq<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_seq<$l, $v>()}
-    };
-    (tuple<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_tuple<$l, $v>(len: usize)}
-    };
-    (tuple_struct<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_tuple_struct<$l, $v>(name: &'static str, len: usize)}
-    };
-    (map<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_map<$l, $v>()}
-    };
-    (struct<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_struct<$l, $v>(name: &'static str, fields: &'static [&'static str])}
-    };
-    (enum<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_enum<$l, $v>(name: &'static str, variants: &'static [&'static str])}
-    };
-    (identifier<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_identifier<$l, $v>()}
-    };
-    (ignored_any<$l:tt, $v:ident>) => {
-        forward_to_deserialize_any_method!{deserialize_ignored_any<$l, $v>()}
-    };
-}

serde/src/private/macros.rs

@@ -1,148 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#[doc(hidden)]
-#[macro_export]
-macro_rules! __private_serialize {
-    () => {
-        trait Serialize {
-            fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-            where
-                S: $crate::Serializer;
-        }
-    };
-}
-
-#[doc(hidden)]
-#[macro_export]
-macro_rules! __private_deserialize {
-    () => {
-        trait Deserialize<'de>: Sized {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: $crate::Deserializer<'de>;
-        }
-    };
-}
-
-/// Used only by Serde doc tests. Not public API.
-#[doc(hidden)]
-#[macro_export(local_inner_macros)]
-macro_rules! __serialize_unimplemented {
-    ($($func:ident)*) => {
-        $(
-            __serialize_unimplemented_helper!($func);
-        )*
-    };
-}
-
-#[doc(hidden)]
-#[macro_export]
-macro_rules! __serialize_unimplemented_method {
-    ($func:ident $(<$t:ident>)* ($($arg:ty),*) -> $ret:ident) => {
-        fn $func $(<$t: ?Sized + $crate::Serialize>)* (self $(, _: $arg)*) -> $crate::export::Result<Self::$ret, Self::Error> {
-            unimplemented!()
-        }
-    };
-}
-
-#[doc(hidden)]
-#[macro_export(local_inner_macros)]
-macro_rules! __serialize_unimplemented_helper {
-    (bool) => {
-        __serialize_unimplemented_method!(serialize_bool(bool) -> Ok);
-    };
-    (i8) => {
-        __serialize_unimplemented_method!(serialize_i8(i8) -> Ok);
-    };
-    (i16) => {
-        __serialize_unimplemented_method!(serialize_i16(i16) -> Ok);
-    };
-    (i32) => {
-        __serialize_unimplemented_method!(serialize_i32(i32) -> Ok);
-    };
-    (i64) => {
-        __serialize_unimplemented_method!(serialize_i64(i64) -> Ok);
-    };
-    (u8) => {
-        __serialize_unimplemented_method!(serialize_u8(u8) -> Ok);
-    };
-    (u16) => {
-        __serialize_unimplemented_method!(serialize_u16(u16) -> Ok);
-    };
-    (u32) => {
-        __serialize_unimplemented_method!(serialize_u32(u32) -> Ok);
-    };
-    (u64) => {
-        __serialize_unimplemented_method!(serialize_u64(u64) -> Ok);
-    };
-    (f32) => {
-        __serialize_unimplemented_method!(serialize_f32(f32) -> Ok);
-    };
-    (f64) => {
-        __serialize_unimplemented_method!(serialize_f64(f64) -> Ok);
-    };
-    (char) => {
-        __serialize_unimplemented_method!(serialize_char(char) -> Ok);
-    };
-    (str) => {
-        __serialize_unimplemented_method!(serialize_str(&str) -> Ok);
-    };
-    (bytes) => {
-        __serialize_unimplemented_method!(serialize_bytes(&[u8]) -> Ok);
-    };
-    (none) => {
-        __serialize_unimplemented_method!(serialize_none() -> Ok);
-    };
-    (some) => {
-        __serialize_unimplemented_method!(serialize_some<T>(&T) -> Ok);
-    };
-    (unit) => {
-        __serialize_unimplemented_method!(serialize_unit() -> Ok);
-    };
-    (unit_struct) => {
-        __serialize_unimplemented_method!(serialize_unit_struct(&str) -> Ok);
-    };
-    (unit_variant) => {
-        __serialize_unimplemented_method!(serialize_unit_variant(&str, u32, &str) -> Ok);
-    };
-    (newtype_struct) => {
-        __serialize_unimplemented_method!(serialize_newtype_struct<T>(&str, &T) -> Ok);
-    };
-    (newtype_variant) => {
-        __serialize_unimplemented_method!(serialize_newtype_variant<T>(&str, u32, &str, &T) -> Ok);
-    };
-    (seq) => {
-        type SerializeSeq = $crate::ser::Impossible<Self::Ok, Self::Error>;
-        __serialize_unimplemented_method!(serialize_seq(Option<usize>) -> SerializeSeq);
-    };
-    (tuple) => {
-        type SerializeTuple = $crate::ser::Impossible<Self::Ok, Self::Error>;
-        __serialize_unimplemented_method!(serialize_tuple(usize) -> SerializeTuple);
-    };
-    (tuple_struct) => {
-        type SerializeTupleStruct = $crate::ser::Impossible<Self::Ok, Self::Error>;
-        __serialize_unimplemented_method!(serialize_tuple_struct(&str, usize) -> SerializeTupleStruct);
-    };
-    (tuple_variant) => {
-        type SerializeTupleVariant = $crate::ser::Impossible<Self::Ok, Self::Error>;
-        __serialize_unimplemented_method!(serialize_tuple_variant(&str, u32, &str, usize) -> SerializeTupleVariant);
-    };
-    (map) => {
-        type SerializeMap = $crate::ser::Impossible<Self::Ok, Self::Error>;
-        __serialize_unimplemented_method!(serialize_map(Option<usize>) -> SerializeMap);
-    };
-    (struct) => {
-        type SerializeStruct = $crate::ser::Impossible<Self::Ok, Self::Error>;
-        __serialize_unimplemented_method!(serialize_struct(&str, usize) -> SerializeStruct);
-    };
-    (struct_variant) => {
-        type SerializeStructVariant = $crate::ser::Impossible<Self::Ok, Self::Error>;
-        __serialize_unimplemented_method!(serialize_struct_variant(&str, u32, &str, usize) -> SerializeStructVariant);
-    };
-}

serde/src/private/mod.rs

@@ -1,12 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-mod macros;
-
-pub mod de;
-pub mod ser;

serde/src/ser/impossible.rs

@@ -1,229 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! This module contains `Impossible` serializer and its implementations.
-
-use lib::*;
-
-use ser::{
-    self, Serialize, SerializeMap, SerializeSeq, SerializeStruct, SerializeStructVariant,
-    SerializeTuple, SerializeTupleStruct, SerializeTupleVariant,
-};
-
-/// Helper type for implementing a `Serializer` that does not support
-/// serializing one of the compound types.
-///
-/// This type cannot be instantiated, but implements every one of the traits
-/// corresponding to the [`Serializer`] compound types: [`SerializeSeq`],
-/// [`SerializeTuple`], [`SerializeTupleStruct`], [`SerializeTupleVariant`],
-/// [`SerializeMap`], [`SerializeStruct`], and [`SerializeStructVariant`].
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde;
-/// #
-/// # use serde::ser::{Serializer, Impossible};
-/// # use serde::private::ser::Error;
-/// #
-/// # struct MySerializer;
-/// #
-/// impl Serializer for MySerializer {
-///     type Ok = ();
-///     type Error = Error;
-///
-///     type SerializeSeq = Impossible<(), Error>;
-///     /* other associated types */
-///
-///     /// This data format does not support serializing sequences.
-///     fn serialize_seq(self,
-///                      len: Option<usize>)
-///                      -> Result<Self::SerializeSeq, Error> {
-///         // Given Impossible cannot be instantiated, the only
-///         // thing we can do here is to return an error.
-/// #         stringify! {
-///         Err(...)
-/// #         };
-/// #         unimplemented!()
-///     }
-///
-///     /* other Serializer methods */
-/// #     __serialize_unimplemented! {
-/// #         bool i8 i16 i32 i64 u8 u16 u32 u64 f32 f64 char str bytes none some
-/// #         unit unit_struct unit_variant newtype_struct newtype_variant
-/// #         tuple tuple_struct tuple_variant map struct struct_variant
-/// #     }
-/// }
-/// #
-/// # fn main() {}
-/// ```
-///
-/// [`Serializer`]: trait.Serializer.html
-/// [`SerializeSeq`]: trait.SerializeSeq.html
-/// [`SerializeTuple`]: trait.SerializeTuple.html
-/// [`SerializeTupleStruct`]: trait.SerializeTupleStruct.html
-/// [`SerializeTupleVariant`]: trait.SerializeTupleVariant.html
-/// [`SerializeMap`]: trait.SerializeMap.html
-/// [`SerializeStruct`]: trait.SerializeStruct.html
-/// [`SerializeStructVariant`]: trait.SerializeStructVariant.html
-pub struct Impossible<Ok, Error> {
-    void: Void,
-    ok: PhantomData<Ok>,
-    error: PhantomData<Error>,
-}
-
-enum Void {}
-
-impl<Ok, Error> SerializeSeq for Impossible<Ok, Error>
-where
-    Error: ser::Error,
-{
-    type Ok = Ok;
-    type Error = Error;
-
-    fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        let _ = value;
-        match self.void {}
-    }
-
-    fn end(self) -> Result<Ok, Error> {
-        match self.void {}
-    }
-}
-
-impl<Ok, Error> SerializeTuple for Impossible<Ok, Error>
-where
-    Error: ser::Error,
-{
-    type Ok = Ok;
-    type Error = Error;
-
-    fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        let _ = value;
-        match self.void {}
-    }
-
-    fn end(self) -> Result<Ok, Error> {
-        match self.void {}
-    }
-}
-
-impl<Ok, Error> SerializeTupleStruct for Impossible<Ok, Error>
-where
-    Error: ser::Error,
-{
-    type Ok = Ok;
-    type Error = Error;
-
-    fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        let _ = value;
-        match self.void {}
-    }
-
-    fn end(self) -> Result<Ok, Error> {
-        match self.void {}
-    }
-}
-
-impl<Ok, Error> SerializeTupleVariant for Impossible<Ok, Error>
-where
-    Error: ser::Error,
-{
-    type Ok = Ok;
-    type Error = Error;
-
-    fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        let _ = value;
-        match self.void {}
-    }
-
-    fn end(self) -> Result<Ok, Error> {
-        match self.void {}
-    }
-}
-
-impl<Ok, Error> SerializeMap for Impossible<Ok, Error>
-where
-    Error: ser::Error,
-{
-    type Ok = Ok;
-    type Error = Error;
-
-    fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        let _ = key;
-        match self.void {}
-    }
-
-    fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        let _ = value;
-        match self.void {}
-    }
-
-    fn end(self) -> Result<Ok, Error> {
-        match self.void {}
-    }
-}
-
-impl<Ok, Error> SerializeStruct for Impossible<Ok, Error>
-where
-    Error: ser::Error,
-{
-    type Ok = Ok;
-    type Error = Error;
-
-    fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        let _ = key;
-        let _ = value;
-        match self.void {}
-    }
-
-    fn end(self) -> Result<Ok, Error> {
-        match self.void {}
-    }
-}
-
-impl<Ok, Error> SerializeStructVariant for Impossible<Ok, Error>
-where
-    Error: ser::Error,
-{
-    type Ok = Ok;
-    type Error = Error;
-
-    fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        let _ = key;
-        let _ = value;
-        match self.void {}
-    }
-
-    fn end(self) -> Result<Ok, Error> {
-        match self.void {}
-    }
-}

serde_codegen/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "serde_codegen"
+version = "0.4.2"
+authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
+license = "MIT/Apache-2.0"
+description = "Macros to auto-generate implementations for the serde framework"
+repository = "https://github.com/erickt/rust-serde"
+build = "build.rs"
+
+[features]
+default = ["with-syntex"]
+nightly = ["quasi_macros"]
+with-syntex = ["quasi/with-syntex", "quasi_codegen/with-syntex", "syntex", "syntex_syntax"]
+
+[build-dependencies]
+quasi_codegen = { verision = "*", optional = true }
+syntex = { version = "*", optional = true }
+
+[dependencies]
+aster = { version = "*", default-features = false }
+quasi = { verision = "*", default-features = false }
+quasi_macros = { version = "*", optional = true }
+syntex = { version = "*", optional = true }
+syntex_syntax = { version = "*", optional = true }

serde_codegen/build.rs

@@ -0,0 +1,28 @@
+#[cfg(feature = "with-syntex")]
+mod inner {
+    extern crate syntex;
+    extern crate quasi_codegen;
+
+    use std::env;
+    use std::path::Path;
+
+    pub fn main() {
+        let out_dir = env::var_os("OUT_DIR").unwrap();
+        let mut registry = syntex::Registry::new();
+        quasi_codegen::register(&mut registry);
+
+        let src = Path::new("src/lib.rs.in");
+        let dst = Path::new(&out_dir).join("lib.rs");
+
+        registry.expand("", &src, &dst).unwrap();
+    }
+}
+
+#[cfg(not(feature = "with-syntex"))]
+mod inner {
+    pub fn main() {}
+}
+
+fn main() {
+    inner::main();
+}

serde_codegen/src/attr.rs

@@ -0,0 +1,108 @@
+use std::collections::HashMap;
+use std::collections::HashSet;
+
+use syntax::ast;
+use syntax::ext::base::ExtCtxt;
+use syntax::ptr::P;
+
+/// Represents field name information
+pub enum FieldNames {
+    Global(P<ast::Expr>),
+    Format{
+        formats: HashMap<P<ast::Expr>, P<ast::Expr>>,
+        default: P<ast::Expr>,
+    }
+}
+
+/// Represents field attribute information
+pub struct FieldAttrs {
+    names: FieldNames,
+    use_default: bool,
+}
+
+impl FieldAttrs {
+
+    /// Create a FieldAttr with a single default field name
+    pub fn new(default_value: bool, name: P<ast::Expr>) -> FieldAttrs {
+        FieldAttrs {
+            names: FieldNames::Global(name),
+            use_default: default_value,
+        }
+    }
+
+    /// Create a FieldAttr with format specific field names
+    pub fn new_with_formats(
+        default_value: bool,
+        default_name: P<ast::Expr>,
+        formats: HashMap<P<ast::Expr>, P<ast::Expr>>,
+        ) -> FieldAttrs {
+        FieldAttrs {
+            names:  FieldNames::Format {
+                formats: formats,
+                default: default_name,
+            },
+            use_default: default_value,
+        }
+    }
+
+    /// Return a set of formats that the field has attributes for.
+    pub fn formats(&self) -> HashSet<P<ast::Expr>> {
+        match self.names {
+            FieldNames::Format{ref formats, default: _} => {
+                let mut set = HashSet::new();
+                for (fmt, _) in formats.iter() {
+                    set.insert(fmt.clone());
+                };
+                set
+            },
+            _ => HashSet::new()
+        }
+    }
+
+    /// Return an expression for the field key name for serialisation.
+    ///
+    /// The resulting expression assumes that `S` refers to a type
+    /// that implements `Serializer`.
+    pub fn serializer_key_expr(self, cx: &ExtCtxt) -> P<ast::Expr> {
+        match self.names {
+            FieldNames::Global(x) => x,
+            FieldNames::Format{formats, default} => {
+                let arms = formats.iter()
+                    .map(|(fmt, lit)| {
+                        quote_arm!(cx, $fmt => { $lit })
+                    })
+                    .collect::<Vec<_>>();
+                quote_expr!(cx,
+                            {
+                                match S::format() {
+                                    $arms
+                                    _ => { $default }
+                                }
+                            })
+            },
+        }
+    }
+
+    /// Return the default field name for the field.
+    pub fn default_key_expr(&self) -> &P<ast::Expr> {
+        match self.names {
+            FieldNames::Global(ref expr) => expr,
+            FieldNames::Format{formats: _, ref default} => default
+        }
+    }
+
+    /// Return the field name for the field in the specified format.
+    pub fn key_expr(&self, format: &P<ast::Expr>) -> &P<ast::Expr> {
+        match self.names {
+            FieldNames::Global(ref expr) =>
+                expr,
+            FieldNames::Format{ref formats, ref default} =>
+                formats.get(format).unwrap_or(default)
+        }
+    }
+
+    /// Predicate for using a field's default value
+    pub fn use_default(&self) -> bool {
+        self.use_default
+    }
+}

serde_codegen/src/de.rs

@@ -0,0 +1,833 @@
+use std::collections::HashSet;
+
+use aster;
+
+use syntax::ast::{
+    self,
+    Ident,
+    MetaItem,
+    Item,
+    Expr,
+    StructDef,
+    EnumDef,
+};
+use syntax::codemap::Span;
+use syntax::ext::base::{Annotatable, ExtCtxt};
+use syntax::ext::build::AstBuilder;
+use syntax::owned_slice::OwnedSlice;
+use syntax::ptr::P;
+
+use attr;
+use field;
+
+pub fn expand_derive_deserialize(
+    cx: &mut ExtCtxt,
+    span: Span,
+    meta_item: &MetaItem,
+    annotatable: &Annotatable,
+    push: &mut FnMut(Annotatable)
+) {
+    let item = match *annotatable {
+        Annotatable::Item(ref item) => item,
+        _ => {
+            cx.span_err(
+                meta_item.span,
+                "`derive` may only be applied to structs and enums");
+            return;
+        }
+    };
+
+    let builder = aster::AstBuilder::new().span(span);
+
+    let generics = match item.node {
+        ast::ItemStruct(_, ref generics) => generics,
+        ast::ItemEnum(_, ref generics) => generics,
+        _ => cx.bug("expected ItemStruct or ItemEnum in #[derive(Deserialize)]")
+    };
+
+    let impl_generics = builder.from_generics(generics.clone())
+        .add_ty_param_bound(
+            builder.path().global().ids(&["serde", "de", "Deserialize"]).build()
+        )
+        .build();
+
+    let ty = builder.ty().path()
+        .segment(item.ident).with_generics(impl_generics.clone()).build()
+        .build();
+
+    let body = deserialize_body(
+        cx,
+        &builder,
+        &item,
+        &impl_generics,
+        ty.clone(),
+    );
+
+    let where_clause = &impl_generics.where_clause;
+
+    let impl_item = quote_item!(cx,
+        #[automatically_derived]
+        impl $impl_generics ::serde::de::Deserialize for $ty $where_clause {
+            fn deserialize<__D>(deserializer: &mut __D) -> ::std::result::Result<$ty, __D::Error>
+                where __D: ::serde::de::Deserializer,
+            {
+                $body
+            }
+        }
+    ).unwrap();
+
+    push(Annotatable::Item(impl_item))
+}
+
+fn deserialize_body(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    item: &Item,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+) -> P<ast::Expr> {
+    match item.node {
+        ast::ItemStruct(ref struct_def, _) => {
+            deserialize_item_struct(
+                cx,
+                builder,
+                item,
+                impl_generics,
+                ty,
+                struct_def,
+            )
+        }
+        ast::ItemEnum(ref enum_def, _) => {
+            deserialize_item_enum(
+                cx,
+                builder,
+                item.ident,
+                impl_generics,
+                ty,
+                enum_def,
+            )
+        }
+        _ => cx.bug("expected ItemStruct or ItemEnum in #[derive(Deserialize)]")
+    }
+}
+
+fn deserialize_item_struct(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    item: &Item,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    struct_def: &ast::StructDef,
+) -> P<ast::Expr> {
+    let mut named_fields = vec![];
+    let mut unnamed_fields = 0;
+
+    for field in struct_def.fields.iter() {
+        match field.node.kind {
+            ast::NamedField(name, _) => { named_fields.push(name); }
+            ast::UnnamedField(_) => { unnamed_fields += 1; }
+        }
+    }
+
+    match (named_fields.is_empty(), unnamed_fields == 0) {
+        (true, true) => {
+            deserialize_unit_struct(
+                cx,
+                &builder,
+                item.ident,
+            )
+        }
+        (true, false) => {
+            deserialize_tuple_struct(
+                cx,
+                &builder,
+                item.ident,
+                impl_generics,
+                ty,
+                unnamed_fields,
+            )
+        }
+        (false, true) => {
+            deserialize_struct(
+                cx,
+                &builder,
+                item.ident,
+                impl_generics,
+                ty,
+                struct_def,
+            )
+        }
+        (false, false) => {
+            cx.bug("struct has named and unnamed fields")
+        }
+    }
+}
+
+
+// Build `__Visitor<A, B, ...>(PhantomData<A>, PhantomData<B>, ...)`
+fn deserialize_visitor(
+    builder: &aster::AstBuilder,
+    trait_generics: &ast::Generics,
+    forward_ty_params: Vec<ast::TyParam>,
+    forward_tys: Vec<P<ast::Ty>>
+) -> (P<ast::Item>, P<ast::Ty>, P<ast::Expr>, ast::Generics) {
+    if trait_generics.ty_params.is_empty() && forward_tys.is_empty() {
+        (
+            builder.item().tuple_struct("__Visitor").build(),
+            builder.ty().id("__Visitor"),
+            builder.expr().id("__Visitor"),
+            trait_generics.clone(),
+        )
+    } else {
+        let placeholders : Vec<_> = trait_generics.ty_params.iter()
+            .map(|t| builder.ty().id(t.ident))
+            .collect();
+        let mut trait_generics = trait_generics.clone();
+        let mut ty_params = forward_ty_params.clone();
+        ty_params.extend(trait_generics.ty_params.into_vec());
+        trait_generics.ty_params = OwnedSlice::from_vec(ty_params);
+
+        (
+            builder.item().tuple_struct("__Visitor")
+                .generics().with(trait_generics.clone()).build()
+                .with_tys(
+                    trait_generics.ty_params.iter().map(|ty_param| {
+                        builder.ty().phantom_data().id(ty_param.ident)
+                    })
+                )
+                .build(),
+            builder.ty().path()
+                .segment("__Visitor").with_generics(trait_generics.clone()).build()
+                .build(),
+            builder.expr().call()
+                .path().segment("__Visitor")
+                .with_tys(forward_tys)
+                .with_tys(placeholders)
+                .build().build()
+                .with_args(
+                    trait_generics.ty_params.iter().map(|_| {
+                        builder.expr().phantom_data()
+                    })
+                )
+                .build(),
+            trait_generics,
+        )
+    }
+}
+
+fn deserializer_ty_param(builder: &aster::AstBuilder) -> ast::TyParam {
+    builder.ty_param("__D")
+        .trait_bound(builder.path()
+                     .global()
+                     .segment("serde").build()
+                     .segment("de").build()
+                     .id("Deserializer")
+                     .build())
+        .build()
+        .build()
+}
+
+fn deserializer_ty_arg(builder: &aster::AstBuilder) -> P<ast::Ty>{
+    builder.ty().id("__D")
+}
+
+fn deserialize_unit_struct(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+) -> P<ast::Expr> {
+    let type_name = builder.expr().str(type_ident);
+
+    quote_expr!(cx, {
+        struct __Visitor;
+
+        impl ::serde::de::Visitor for __Visitor {
+            type Value = $type_ident;
+
+            #[inline]
+            fn visit_unit<E>(&mut self) -> ::std::result::Result<$type_ident, E>
+                where E: ::serde::de::Error,
+            {
+                Ok($type_ident)
+            }
+
+            #[inline]
+            fn visit_seq<V>(&mut self, mut visitor: V) -> ::std::result::Result<$type_ident, V::Error>
+                where V: ::serde::de::SeqVisitor,
+            {
+                try!(visitor.end());
+                self.visit_unit()
+            }
+        }
+
+        deserializer.visit_named_unit($type_name, __Visitor)
+    })
+}
+
+fn deserialize_tuple_struct(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    fields: usize,
+) -> P<ast::Expr> {
+    let where_clause = &impl_generics.where_clause;
+
+    let (visitor_item, visitor_ty, visitor_expr, visitor_generics) =
+        deserialize_visitor(
+            builder,
+            impl_generics,
+            vec![deserializer_ty_param(builder)],
+            vec![deserializer_ty_arg(builder)],
+        );
+
+    let visit_seq_expr = deserialize_seq(
+        cx,
+        builder,
+        builder.path().id(type_ident).build(),
+        fields,
+    );
+
+    let type_name = builder.expr().str(type_ident);
+
+    quote_expr!(cx, {
+        $visitor_item
+
+        impl $visitor_generics ::serde::de::Visitor for $visitor_ty $where_clause {
+            type Value = $ty;
+
+            fn visit_seq<__V>(&mut self, mut visitor: __V) -> ::std::result::Result<$ty, __V::Error>
+                where __V: ::serde::de::SeqVisitor,
+            {
+                $visit_seq_expr
+            }
+        }
+
+        deserializer.visit_named_seq($type_name, $visitor_expr)
+    })
+}
+
+fn deserialize_seq(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    struct_path: ast::Path,
+    fields: usize,
+) -> P<ast::Expr> {
+    let let_values: Vec<P<ast::Stmt>> = (0 .. fields)
+        .map(|i| {
+            let name = builder.id(format!("__field{}", i));
+            quote_stmt!(cx,
+                let $name = match try!(visitor.visit()) {
+                    Some(value) => { value },
+                    None => {
+                        return Err(::serde::de::Error::end_of_stream_error());
+                    }
+                };
+            ).unwrap()
+        })
+        .collect();
+
+    let result = builder.expr().call()
+        .build_path(struct_path)
+        .with_args((0 .. fields).map(|i| builder.expr().id(format!("__field{}", i))))
+        .build();
+
+    quote_expr!(cx, {
+        $let_values
+
+        try!(visitor.end());
+
+        Ok($result)
+    })
+}
+
+fn deserialize_struct(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    struct_def: &StructDef,
+) -> P<ast::Expr> {
+    let where_clause = &impl_generics.where_clause;
+
+    let (visitor_item, visitor_ty, visitor_expr, visitor_generics) =
+        deserialize_visitor(
+            builder,
+            &impl_generics,
+            vec![deserializer_ty_param(builder)],
+            vec![deserializer_ty_arg(builder)],
+                );
+
+    let (field_visitor, visit_map_expr) = deserialize_struct_visitor(
+        cx,
+        builder,
+        struct_def,
+        builder.path().id(type_ident).build(),
+    );
+
+    let type_name = builder.expr().str(type_ident);
+
+    quote_expr!(cx, {
+        $field_visitor
+
+        $visitor_item
+
+        impl $visitor_generics ::serde::de::Visitor for $visitor_ty $where_clause {
+            type Value = $ty;
+
+            #[inline]
+            fn visit_map<__V>(&mut self, mut visitor: __V) -> ::std::result::Result<$ty, __V::Error>
+                where __V: ::serde::de::MapVisitor,
+            {
+                $visit_map_expr
+            }
+        }
+
+        deserializer.visit_named_map($type_name, $visitor_expr)
+    })
+}
+
+fn deserialize_item_enum(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    enum_def: &EnumDef,
+) -> P<ast::Expr> {
+    let where_clause = &impl_generics.where_clause;
+
+    let type_name = builder.expr().str(type_ident);
+
+    let variant_visitor = deserialize_field_visitor(
+        cx,
+        builder,
+        enum_def.variants.iter()
+            .map(|variant|
+                 attr::FieldAttrs::new(
+                     true,
+                     builder.expr().str(variant.node.name)))
+            .collect()
+    );
+
+    // Match arms to extract a variant from a string
+    let variant_arms: Vec<_> = enum_def.variants.iter()
+        .enumerate()
+        .map(|(i, variant)| {
+            let variant_name = builder.pat().enum_()
+                .id("__Field").id(format!("__field{}", i)).build()
+                .build();
+
+            let expr = deserialize_variant(
+                cx,
+                builder,
+                type_ident,
+                impl_generics,
+                ty.clone(),
+                variant,
+            );
+
+            quote_arm!(cx, $variant_name => { $expr })
+        })
+        .collect();
+
+    let (visitor_item, visitor_ty, visitor_expr, visitor_generics) =
+        deserialize_visitor(
+            builder,
+            impl_generics,
+            vec![deserializer_ty_param(builder)],
+            vec![deserializer_ty_arg(builder)],
+                );
+
+    quote_expr!(cx, {
+        $variant_visitor
+
+        $visitor_item
+
+        impl $visitor_generics ::serde::de::EnumVisitor for $visitor_ty $where_clause {
+            type Value = $ty;
+
+            fn visit<__V>(&mut self, mut visitor: __V) -> ::std::result::Result<$ty, __V::Error>
+                where __V: ::serde::de::VariantVisitor,
+            {
+                match try!(visitor.visit_variant()) {
+                    $variant_arms
+                }
+            }
+        }
+
+        deserializer.visit_enum($type_name, $visitor_expr)
+    })
+}
+
+fn deserialize_variant(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+    generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    variant: &ast::Variant,
+) -> P<ast::Expr> {
+    let variant_ident = variant.node.name;
+
+    match variant.node.kind {
+        ast::TupleVariantKind(ref args) if args.is_empty() => {
+            quote_expr!(cx, {
+                try!(visitor.visit_unit());
+                Ok($type_ident::$variant_ident)
+            })
+        }
+        ast::TupleVariantKind(ref args) => {
+            deserialize_tuple_variant(
+                cx,
+                builder,
+                type_ident,
+                variant_ident,
+                generics,
+                ty,
+                args.len(),
+            )
+        }
+        ast::StructVariantKind(ref struct_def) => {
+            deserialize_struct_variant(
+                cx,
+                builder,
+                type_ident,
+                variant_ident,
+                generics,
+                ty,
+                struct_def,
+            )
+        }
+    }
+}
+
+fn deserialize_tuple_variant(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: ast::Ident,
+    variant_ident: ast::Ident,
+    generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    fields: usize,
+) -> P<ast::Expr> {
+    let where_clause = &generics.where_clause;
+
+    let (visitor_item, visitor_ty, visitor_expr, visitor_generics) =
+        deserialize_visitor(
+            builder,
+            generics,
+            vec![deserializer_ty_param(builder)],
+            vec![deserializer_ty_arg(builder)],
+                );
+
+    let visit_seq_expr = deserialize_seq(
+        cx,
+        builder,
+        builder.path().id(type_ident).id(variant_ident).build(),
+        fields,
+    );
+
+    quote_expr!(cx, {
+        $visitor_item
+
+        impl $visitor_generics ::serde::de::Visitor for $visitor_ty $where_clause {
+            type Value = $ty;
+
+            fn visit_seq<__V>(&mut self, mut visitor: __V) -> ::std::result::Result<$ty, __V::Error>
+                where __V: ::serde::de::SeqVisitor,
+            {
+                $visit_seq_expr
+            }
+        }
+
+        visitor.visit_seq($visitor_expr)
+    })
+}
+
+fn deserialize_struct_variant(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: ast::Ident,
+    variant_ident: ast::Ident,
+    generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    struct_def: &ast::StructDef,
+) -> P<ast::Expr> {
+    let where_clause = &generics.where_clause;
+
+    let (field_visitor, field_expr) = deserialize_struct_visitor(
+        cx,
+        builder,
+        struct_def,
+        builder.path().id(type_ident).id(variant_ident).build(),
+    );
+
+    let (visitor_item, visitor_ty, visitor_expr, visitor_generics) =
+        deserialize_visitor(
+            builder,
+            generics,
+            vec![deserializer_ty_param(builder)],
+            vec![deserializer_ty_arg(builder)],
+                );
+
+    quote_expr!(cx, {
+        $field_visitor
+
+        $visitor_item
+
+        impl $visitor_generics ::serde::de::Visitor for $visitor_ty $where_clause {
+            type Value = $ty;
+
+            fn visit_map<__V>(&mut self, mut visitor: __V) -> ::std::result::Result<$ty, __V::Error>
+                where __V: ::serde::de::MapVisitor,
+            {
+                $field_expr
+            }
+        }
+
+        visitor.visit_map($visitor_expr)
+    })
+}
+
+fn deserialize_field_visitor(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    field_attrs: Vec<attr::FieldAttrs>,
+) -> Vec<P<ast::Item>> {
+    // Create the field names for the fields.
+    let field_idents: Vec<ast::Ident> = (0 .. field_attrs.len())
+        .map(|i| builder.id(format!("__field{}", i)))
+        .collect();
+
+    let field_enum = builder.item()
+        .attr().allow(&["non_camel_case_types"])
+        .enum_("__Field")
+        .with_variants(
+            field_idents.iter().map(|field_ident| {
+                builder.variant(field_ident).tuple().build()
+            })
+        )
+        .build();
+
+    // A set of all the formats that have specialized field attributes
+    let formats = field_attrs.iter()
+        .fold(HashSet::new(), |mut set, field_expr| {
+            set.extend(field_expr.formats());
+            set
+        });
+
+    // Match arms to extract a field from a string
+    let default_field_arms: Vec<_> = field_idents.iter()
+        .zip(field_attrs.iter())
+        .map(|(field_ident, field_expr)| {
+            let expr = field_expr.default_key_expr();
+            quote_arm!(cx, $expr => { Ok(__Field::$field_ident) })
+        })
+        .collect();
+
+    let body = if formats.is_empty() {
+        // No formats specific attributes, so no match on format required
+        quote_expr!(cx,
+                    match value {
+                        $default_field_arms
+                        _ => { Err(::serde::de::Error::unknown_field_error(value)) }
+                    })
+    } else {
+        let field_arms : Vec<_> = formats.iter()
+            .map(|fmt| {
+                field_idents.iter()
+                    .zip(field_attrs.iter())
+                    .map(|(field_ident, field_expr)| {
+                        let expr = field_expr.key_expr(fmt);
+                        quote_arm!(cx, $expr => { Ok(__Field::$field_ident) })
+                    })
+                    .collect::<Vec<_>>()
+            })
+            .collect();
+
+        let fmt_matches : Vec<_> = formats.iter()
+            .zip(field_arms.iter())
+            .map(|(ref fmt, ref arms)| {
+                quote_arm!(cx, $fmt => {
+                    match value {
+                        $arms
+                        _ => {
+                            Err(::serde::de::Error::unknown_field_error(value))
+                        }
+                    }})
+            })
+            .collect();
+
+        quote_expr!(cx,
+                    match __D::format() {
+                        $fmt_matches
+                        _ => match value {
+                            $default_field_arms
+                            _ => { Err(::serde::de::Error::unknown_field_error(value)) }
+                        }
+                    })
+    };
+
+    let impl_item = quote_item!(cx,
+        impl ::serde::de::Deserialize for __Field {
+            #[inline]
+            fn deserialize<D>(deserializer: &mut D) -> ::std::result::Result<__Field, D::Error>
+                where D: ::serde::de::Deserializer,
+            {
+                use std::marker::PhantomData;
+
+                struct __FieldVisitor<D> {
+                    phantom: PhantomData<D>
+                }
+
+                impl<__D> ::serde::de::Visitor for __FieldVisitor<__D>
+                    where __D: ::serde::de::Deserializer
+                {
+                    type Value = __Field;
+
+                    fn visit_str<E>(&mut self, value: &str) -> ::std::result::Result<__Field, E>
+                        where E: ::serde::de::Error,
+                    {
+                        $body
+                    }
+
+                    fn visit_bytes<E>(&mut self, value: &[u8]) -> ::std::result::Result<__Field, E>
+                        where E: ::serde::de::Error,
+                    {
+                        // TODO: would be better to generate a byte string literal match
+                        match ::std::str::from_utf8(value) {
+                            Ok(s) => self.visit_str(s),
+                            _ => Err(::serde::de::Error::syntax_error()),
+                        }
+                    }
+                }
+
+                deserializer.visit(
+                    __FieldVisitor::<D>{ phantom: PhantomData })
+            }
+        }
+    ).unwrap();
+
+    vec![field_enum, impl_item]
+}
+
+fn deserialize_struct_visitor(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    struct_def: &ast::StructDef,
+    struct_path: ast::Path,
+) -> (Vec<P<ast::Item>>, P<ast::Expr>) {
+    let field_visitor = deserialize_field_visitor(
+        cx,
+        builder,
+        field::struct_field_attrs(cx, builder, struct_def),
+    );
+
+    let visit_map_expr = deserialize_map(
+        cx,
+        builder,
+        struct_path,
+        struct_def,
+    );
+
+    (field_visitor, visit_map_expr)
+}
+
+fn deserialize_map(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    struct_path: ast::Path,
+    struct_def: &StructDef,
+) -> P<ast::Expr> {
+    // Create the field names for the fields.
+    let field_names: Vec<ast::Ident> = (0 .. struct_def.fields.len())
+        .map(|i| builder.id(format!("__field{}", i)))
+        .collect();
+
+    // Declare each field.
+    let let_values: Vec<P<ast::Stmt>> = field_names.iter()
+        .map(|field_name| quote_stmt!(cx, let mut $field_name = None;).unwrap())
+        .collect();
+
+    // Match arms to extract a value for a field.
+    let value_arms: Vec<ast::Arm> = field_names.iter()
+        .map(|field_name| {
+            quote_arm!(cx,
+                __Field::$field_name => {
+                    $field_name = Some(try!(visitor.visit_value()));
+                }
+            )
+        })
+        .collect();
+
+    let extract_values: Vec<P<ast::Stmt>> = field_names.iter()
+        .zip(field::struct_field_attrs(cx, builder, struct_def).iter())
+        .map(|(field_name, field_attr)| {
+            let missing_expr = if field_attr.use_default() {
+                quote_expr!(cx, ::std::default::Default::default())
+            } else {
+                let formats = field_attr.formats();
+                let arms : Vec<_> = formats.iter()
+                    .map(|format| {
+                        let key_expr = field_attr.key_expr(format);
+                        quote_arm!(cx, $format => { $key_expr })
+                    })
+                    .collect();
+                let default = field_attr.default_key_expr();
+                if arms.is_empty() {
+                    quote_expr!(cx, try!(visitor.missing_field($default)))
+                } else {
+                    quote_expr!(
+                        cx,
+                        try!(visitor.missing_field(
+                            match __D::format() {
+                                $arms
+                                _ => { $default }
+                            })))
+                }
+            };
+
+            quote_stmt!(cx,
+                let $field_name = match $field_name {
+                    Some($field_name) => $field_name,
+                    None => $missing_expr
+                };
+            ).unwrap()
+        })
+        .collect();
+
+    let result = builder.expr().struct_path(struct_path)
+        .with_id_exprs(
+            struct_def.fields.iter()
+                .zip(field_names.iter())
+                .map(|(field, field_name)| {
+                    (
+                        match field.node.kind {
+                            ast::NamedField(name, _) => name.clone(),
+                            ast::UnnamedField(_) => panic!("struct contains unnamed fields"),
+                        },
+                        builder.expr().id(field_name),
+                    )
+                })
+        )
+        .build();
+
+    quote_expr!(cx, {
+        $let_values
+
+        while let Some(key) = try!(visitor.visit_key()) {
+            match key {
+                $value_arms
+            }
+        }
+
+        $extract_values
+
+        try!(visitor.end());
+
+        Ok($result)
+    })
+}

serde_codegen/src/field.rs

@@ -0,0 +1,133 @@
+use std::collections::HashMap;
+
+use aster;
+
+use syntax::ast;
+use syntax::attr;
+use syntax::ext::base::ExtCtxt;
+use syntax::ptr::P;
+
+use attr::FieldAttrs;
+
+enum Rename<'a> {
+    None,
+    Global(&'a ast::Lit),
+    Format(HashMap<P<ast::Expr>, &'a ast::Lit>)
+}
+
+fn rename<'a>(
+    builder: &aster::AstBuilder,
+    mi: &'a ast::MetaItem,
+    ) -> Option<Rename<'a>>
+{
+    match mi.node {
+        ast::MetaNameValue(ref n, ref lit) => {
+            if n == &"rename" {
+                Some(Rename::Global(lit))
+            } else {
+                None
+            }
+        },
+        ast::MetaList(ref n, ref items) => {
+            if n == &"rename" {
+                let mut m = HashMap::new();
+                m.extend(
+                    items.iter()
+                        .filter_map(
+                            |item|
+                            match item.node {
+                                ast::MetaNameValue(ref n, ref lit) =>
+                                    Some((builder.expr().str(n),
+                                          lit)),
+                                _ => None
+                            }));
+                Some(Rename::Format(m))
+            } else {
+                None
+            }
+        },
+        _ => None
+    }
+}
+
+fn default_value(mi: &ast::MetaItem) -> bool {
+    if let ast::MetaItem_::MetaWord(ref n) = mi.node {
+        n == &"default"
+    } else {
+        false
+    }
+}
+
+fn field_attrs<'a>(
+    builder: &aster::AstBuilder,
+    field: &'a ast::StructField,
+) -> (Rename<'a>, bool) {
+    field.node.attrs.iter()
+        .find(|sa| {
+            if let ast::MetaList(ref n, _) = sa.node.value.node {
+                n == &"serde"
+            } else {
+                false
+            }
+        })
+        .and_then(|sa| {
+            if let ast::MetaList(_, ref vals) = sa.node.value.node {
+                attr::mark_used(&sa);
+                Some((vals.iter()
+                      .fold(None, |v, mi| v.or(rename(builder, mi)))
+                      .unwrap_or(Rename::None),
+                      vals.iter().any(|mi| default_value(mi))))
+            } else {
+                Some((Rename::None, false))
+            }
+        })
+        .unwrap_or((Rename::None, false))
+}
+
+pub fn struct_field_attrs(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    struct_def: &ast::StructDef,
+) -> Vec<FieldAttrs> {
+    struct_def.fields.iter()
+        .map(|field| {
+            match field_attrs(builder, field) {
+                (Rename::Global(rename), default_value) =>
+                    FieldAttrs::new(
+                        default_value,
+                        builder.expr().build_lit(P(rename.clone()))),
+                (Rename::Format(renames), default_value) => {
+                    let mut res = HashMap::new();
+                    res.extend(
+                        renames.into_iter()
+                            .map(|(k,v)|
+                                 (k, builder.expr().build_lit(P(v.clone())))));
+                    FieldAttrs::new_with_formats(
+                        default_value,
+                        default_field_name(cx, builder, field.node.kind),
+                        res)
+                },
+                (Rename::None, default_value) => {
+                    FieldAttrs::new(
+                        default_value,
+                        default_field_name(cx, builder, field.node.kind))
+                }
+            }
+        })
+        .collect()
+}
+
+fn default_field_name(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    kind: ast::StructFieldKind,
+) -> P<ast::Expr> {
+    match kind {
+        ast::NamedField(name, _) => {
+            builder.expr().str(name)
+        }
+        ast::UnnamedField(_) => {
+            cx.bug("struct has named and unnamed fields")
+        }
+    }
+}

serde_codegen/src/lib.rs

@@ -0,0 +1,73 @@
+#![cfg_attr(not(feature = "with-syntex"), feature(rustc_private, plugin))]
+#![cfg_attr(not(feature = "with-syntex"), plugin(quasi_macros))]
+
+extern crate aster;
+extern crate quasi;
+
+#[cfg(feature = "with-syntex")]
+extern crate syntex;
+
+#[cfg(feature = "with-syntex")]
+extern crate syntex_syntax as syntax;
+
+#[cfg(not(feature = "with-syntex"))]
+extern crate syntax;
+
+#[cfg(not(feature = "with-syntex"))]
+extern crate rustc;
+
+#[cfg(feature = "with-syntex")]
+include!(concat!(env!("OUT_DIR"), "/lib.rs"));
+
+#[cfg(not(feature = "with-syntex"))]
+include!("lib.rs.in");
+
+#[cfg(feature = "with-syntex")]
+pub fn register(reg: &mut syntex::Registry) {
+    use syntax::{ast, fold};
+
+    reg.add_attr("feature(custom_derive)");
+    reg.add_attr("feature(custom_attribute)");
+
+    reg.add_decorator("derive_Serialize", ser::expand_derive_serialize);
+    reg.add_decorator("derive_Deserialize", de::expand_derive_deserialize);
+
+    reg.add_post_expansion_pass(strip_attributes);
+
+    /// Strip the serde attributes from the crate.
+    #[cfg(feature = "with-syntex")]
+    fn strip_attributes(krate: ast::Crate) -> ast::Crate {
+        /// Helper folder that strips the serde attributes after the extensions have been expanded.
+        struct StripAttributeFolder;
+
+        impl fold::Folder for StripAttributeFolder {
+            fn fold_attribute(&mut self, attr: ast::Attribute) -> Option<ast::Attribute> {
+                match attr.node.value.node {
+                    ast::MetaList(ref n, _) if n == &"serde" => { return None; }
+                    _ => {}
+                }
+
+                Some(attr)
+            }
+
+            fn fold_mac(&mut self, mac: ast::Mac) -> ast::Mac {
+                fold::noop_fold_mac(mac, self)
+            }
+        }
+
+        fold::Folder::fold_crate(&mut StripAttributeFolder, krate)
+    }
+}
+
+#[cfg(not(feature = "with-syntex"))]
+pub fn register(reg: &mut rustc::plugin::Registry) {
+    reg.register_syntax_extension(
+        syntax::parse::token::intern("derive_Serialize"),
+        syntax::ext::base::MultiDecorator(
+            Box::new(ser::expand_derive_serialize)));
+
+    reg.register_syntax_extension(
+        syntax::parse::token::intern("derive_Deserialize"),
+        syntax::ext::base::MultiDecorator(
+            Box::new(de::expand_derive_deserialize)));
+}

serde_codegen/src/lib.rs.in

@@ -0,0 +1,4 @@
+mod attr;
+mod de;
+mod field;
+mod ser;

serde_codegen/src/ser.rs

@@ -0,0 +1,623 @@
+use aster;
+
+use syntax::ast::{
+    Ident,
+    MetaItem,
+    Item,
+    Expr,
+    StructDef,
+};
+use syntax::ast;
+use syntax::codemap::Span;
+use syntax::ext::base::{Annotatable, ExtCtxt};
+use syntax::ext::build::AstBuilder;
+use syntax::ptr::P;
+
+use field::struct_field_attrs;
+
+pub fn expand_derive_serialize(
+    cx: &mut ExtCtxt,
+    span: Span,
+    meta_item: &MetaItem,
+    annotatable: &Annotatable,
+    push: &mut FnMut(Annotatable)
+) {
+    let item = match *annotatable {
+        Annotatable::Item(ref item) => item,
+        _ => {
+            cx.span_err(
+                meta_item.span,
+                "`derive` may only be applied to structs and enums");
+            return;
+        }
+    };
+
+    let builder = aster::AstBuilder::new().span(span);
+
+    let generics = match item.node {
+        ast::ItemStruct(_, ref generics) => generics,
+        ast::ItemEnum(_, ref generics) => generics,
+        _ => cx.bug("expected ItemStruct or ItemEnum in #[derive(Serialize)]")
+    };
+
+    let impl_generics = builder.from_generics(generics.clone())
+        .add_ty_param_bound(
+            builder.path().global().ids(&["serde", "ser", "Serialize"]).build()
+        )
+        .build();
+
+    let ty = builder.ty().path()
+        .segment(item.ident).with_generics(impl_generics.clone()).build()
+        .build();
+
+    let body = serialize_body(
+        cx,
+        &builder,
+        &item,
+        &impl_generics,
+        builder.ty()
+            .ref_()
+            .lifetime("'__a")
+            .build_ty(ty.clone()),
+    );
+
+    let where_clause = &impl_generics.where_clause;
+
+    let impl_item = quote_item!(cx,
+        #[automatically_derived]
+        impl $impl_generics ::serde::ser::Serialize for $ty $where_clause {
+            fn serialize<__S>(&self, serializer: &mut __S) -> ::std::result::Result<(), __S::Error>
+                where __S: ::serde::ser::Serializer,
+            {
+                $body
+            }
+        }
+    ).unwrap();
+
+    push(Annotatable::Item(impl_item))
+}
+
+fn serialize_body(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    item: &Item,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+) -> P<ast::Expr> {
+    match item.node {
+        ast::ItemStruct(ref struct_def, _) => {
+            serialize_item_struct(
+                cx,
+                builder,
+                item,
+                impl_generics,
+                ty,
+                struct_def,
+            )
+        }
+        ast::ItemEnum(ref enum_def, _) => {
+            serialize_item_enum(
+                cx,
+                builder,
+                item.ident,
+                impl_generics,
+                ty,
+                enum_def,
+            )
+        }
+        _ => cx.bug("expected ItemStruct or ItemEnum in #[derive(Serialize)]")
+    }
+}
+
+fn serialize_item_struct(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    item: &Item,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    struct_def: &ast::StructDef,
+) -> P<ast::Expr> {
+    let mut named_fields = vec![];
+    let mut unnamed_fields = 0;
+
+    for field in struct_def.fields.iter() {
+        match field.node.kind {
+            ast::NamedField(name, _) => { named_fields.push(name); }
+            ast::UnnamedField(_) => { unnamed_fields += 1; }
+        }
+    }
+
+    match (named_fields.is_empty(), unnamed_fields == 0) {
+        (true, true) => {
+            serialize_unit_struct(
+                cx,
+                &builder,
+                item.ident,
+            )
+        }
+        (true, false) => {
+            serialize_tuple_struct(
+                cx,
+                &builder,
+                item.ident,
+                impl_generics,
+                ty,
+                unnamed_fields,
+            )
+        }
+        (false, true) => {
+            serialize_struct(
+                cx,
+                &builder,
+                item.ident,
+                impl_generics,
+                ty,
+                struct_def,
+                named_fields,
+            )
+        }
+        (false, false) => {
+            cx.bug("struct has named and unnamed fields")
+        }
+    }
+}
+
+fn serialize_unit_struct(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident
+) -> P<ast::Expr> {
+    let type_name = builder.expr().str(type_ident);
+
+    quote_expr!(cx, serializer.visit_named_unit($type_name))
+}
+
+fn serialize_tuple_struct(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    fields: usize,
+) -> P<ast::Expr> {
+    let (visitor_struct, visitor_impl) = serialize_tuple_struct_visitor(
+        cx,
+        builder,
+        ty.clone(),
+        ty,
+        fields,
+        impl_generics,
+    );
+
+    let type_name = builder.expr().str(type_ident);
+
+    quote_expr!(cx, {
+        $visitor_struct
+        $visitor_impl
+        serializer.visit_named_seq($type_name, Visitor {
+            value: self,
+            state: 0,
+            _structure_ty: ::std::marker::PhantomData,
+        })
+    })
+}
+
+fn serialize_struct(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    struct_def: &StructDef,
+    fields: Vec<Ident>,
+) -> P<ast::Expr> {
+    let (visitor_struct, visitor_impl) = serialize_struct_visitor(
+        cx,
+        builder,
+        ty.clone(),
+        ty,
+        struct_def,
+        impl_generics,
+        fields.iter().map(|field| quote_expr!(cx, &self.value.$field)),
+    );
+
+    let type_name = builder.expr().str(type_ident);
+
+    quote_expr!(cx, {
+        $visitor_struct
+        $visitor_impl
+        serializer.visit_named_map($type_name, Visitor {
+            value: self,
+            state: 0,
+            _structure_ty: ::std::marker::PhantomData,
+        })
+    })
+}
+
+fn serialize_item_enum(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+    impl_generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    enum_def: &ast::EnumDef,
+) -> P<ast::Expr> {
+    let arms: Vec<ast::Arm> = enum_def.variants.iter()
+        .map(|variant| {
+            serialize_variant(
+                cx,
+                builder,
+                type_ident,
+                impl_generics,
+                ty.clone(),
+                variant,
+            )
+        })
+        .collect();
+
+    quote_expr!(cx,
+        match *self {
+            $arms
+        }
+    )
+}
+
+fn serialize_variant(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_ident: Ident,
+    generics: &ast::Generics,
+    ty: P<ast::Ty>,
+    variant: &ast::Variant,
+) -> ast::Arm {
+    let type_name = builder.expr().str(type_ident);
+    let variant_ident = variant.node.name;
+    let variant_name = builder.expr().str(variant_ident);
+
+    match variant.node.kind {
+        ast::TupleVariantKind(ref args) if args.is_empty() => {
+            let pat = builder.pat().enum_()
+                .id(type_ident).id(variant_ident).build()
+                .build();
+
+            quote_arm!(cx,
+                $pat => {
+                    ::serde::ser::Serializer::visit_enum_unit(
+                        serializer,
+                        $type_name,
+                        $variant_name,
+                    )
+                }
+            )
+        }
+        ast::TupleVariantKind(ref args) => {
+            let fields: Vec<ast::Ident> = (0 .. args.len())
+                .map(|i| builder.id(format!("__field{}", i)))
+                .collect();
+
+            let pat = builder.pat().enum_()
+                .id(type_ident).id(variant_ident).build()
+                .with_pats(fields.iter().map(|field| builder.pat().ref_id(field)))
+                .build();
+
+            let expr = serialize_tuple_variant(
+                cx,
+                builder,
+                type_name,
+                variant_name,
+                generics,
+                ty,
+                args,
+                fields,
+            );
+
+            quote_arm!(cx, $pat => { $expr })
+        }
+        ast::StructVariantKind(ref struct_def) => {
+            let fields: Vec<_> = (0 .. struct_def.fields.len())
+                .map(|i| builder.id(format!("__field{}", i)))
+                .collect();
+
+            let pat = builder.pat().struct_()
+                .id(type_ident).id(variant_ident).build()
+                .with_pats(
+                    fields.iter()
+                        .zip(struct_def.fields.iter())
+                        .map(|(id, field)| {
+                            let name = match field.node.kind {
+                                ast::NamedField(name, _) => name,
+                                ast::UnnamedField(_) => {
+                                    cx.bug("struct variant has unnamed fields")
+                                }
+                            };
+
+                            (name, builder.pat().ref_id(id))
+                        })
+                )
+                .build();
+
+            let expr = serialize_struct_variant(
+                cx,
+                builder,
+                type_name,
+                variant_name,
+                generics,
+                ty,
+                struct_def,
+                fields,
+            );
+
+            quote_arm!(cx, $pat => { $expr })
+        }
+    }
+}
+
+fn serialize_tuple_variant(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_name: P<ast::Expr>,
+    variant_name: P<ast::Expr>,
+    generics: &ast::Generics,
+    structure_ty: P<ast::Ty>,
+    args: &[ast::VariantArg],
+    fields: Vec<Ident>,
+) -> P<ast::Expr> {
+    let variant_ty = builder.ty().tuple()
+        .with_tys(
+            args.iter().map(|arg| {
+                builder.ty()
+                    .ref_()
+                    .lifetime("'__a")
+                    .build_ty(arg.ty.clone())
+            })
+        )
+        .build();
+
+    let (visitor_struct, visitor_impl) = serialize_tuple_struct_visitor(
+        cx,
+        builder,
+        structure_ty,
+        variant_ty,
+        args.len(),
+        generics,
+    );
+
+    let value_expr = builder.expr().tuple()
+        .with_exprs(
+            fields.iter().map(|field| {
+                builder.expr()
+                    .addr_of()
+                    .id(field)
+            })
+        )
+        .build();
+
+    quote_expr!(cx, {
+        $visitor_struct
+        $visitor_impl
+        serializer.visit_enum_seq($type_name, $variant_name, Visitor {
+            value: $value_expr,
+            state: 0,
+            _structure_ty: ::std::marker::PhantomData,
+        })
+    })
+}
+
+fn serialize_struct_variant(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    type_name: P<ast::Expr>,
+    variant_name: P<ast::Expr>,
+    generics: &ast::Generics,
+    structure_ty: P<ast::Ty>,
+    struct_def: &ast::StructDef,
+    fields: Vec<Ident>,
+) -> P<ast::Expr> {
+    let value_ty = builder.ty().tuple()
+        .with_tys(
+            struct_def.fields.iter().map(|field| {
+                builder.ty()
+                    .ref_()
+                    .lifetime("'__a")
+                    .build_ty(field.node.ty.clone())
+            })
+        )
+        .build();
+
+    let value_expr = builder.expr().tuple()
+        .with_exprs(
+            fields.iter().map(|field| {
+                builder.expr()
+                    .addr_of()
+                    .id(field)
+            })
+        )
+        .build();
+
+    let (visitor_struct, visitor_impl) = serialize_struct_visitor(
+        cx,
+        builder,
+        structure_ty,
+        value_ty,
+        struct_def,
+        generics,
+        (0 .. fields.len()).map(|i| {
+            builder.expr()
+                .tup_field(i)
+                .field("value").self_()
+        })
+    );
+
+    quote_expr!(cx, {
+        $visitor_struct
+        $visitor_impl
+        serializer.visit_enum_map($type_name, $variant_name, Visitor {
+            value: $value_expr,
+            state: 0,
+            _structure_ty: ::std::marker::PhantomData,
+        })
+    })
+}
+
+fn serialize_tuple_struct_visitor(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    structure_ty: P<ast::Ty>,
+    variant_ty: P<ast::Ty>,
+    fields: usize,
+    generics: &ast::Generics
+) -> (P<ast::Item>, P<ast::Item>) {
+    let arms: Vec<ast::Arm> = (0 .. fields)
+        .map(|i| {
+            let expr = builder.expr()
+                .tup_field(i)
+                .field("value").self_();
+
+            quote_arm!(cx,
+                $i => {
+                    self.state += 1;
+                    let v = try!(serializer.visit_seq_elt(&$expr));
+                    Ok(Some(v))
+                }
+            )
+        })
+        .collect();
+
+    let visitor_impl_generics = builder.from_generics(generics.clone())
+        .add_lifetime_bound("'__a")
+        .lifetime_name("'__a")
+        .build();
+
+    let where_clause = &visitor_impl_generics.where_clause;
+
+    let visitor_generics = builder.from_generics(visitor_impl_generics.clone())
+        .strip_bounds()
+        .build();
+
+    // Variants don't necessarily reference all generic lifetimes and type parameters,
+    // so to avoid a compilation failure, we'll just add a phantom type to capture these
+    // unused values.
+    let structure_ty = builder.ty()
+        .phantom_data()
+        .build(structure_ty);
+
+    (
+        quote_item!(cx,
+            struct Visitor $visitor_impl_generics $where_clause {
+                state: usize,
+                value: $variant_ty,
+                _structure_ty: $structure_ty,
+            }
+        ).unwrap(),
+
+        quote_item!(cx,
+            impl $visitor_impl_generics ::serde::ser::SeqVisitor
+            for Visitor $visitor_generics
+            $where_clause {
+                #[inline]
+                fn visit<S>(&mut self, serializer: &mut S) -> ::std::result::Result<Option<()>, S::Error>
+                    where S: ::serde::ser::Serializer
+                {
+                    match self.state {
+                        $arms
+                        _ => Ok(None)
+                    }
+                }
+
+                #[inline]
+                fn len(&self) -> Option<usize> {
+                    Some($fields)
+                }
+            }
+        ).unwrap(),
+    )
+}
+
+fn serialize_struct_visitor<I>(
+    cx: &ExtCtxt,
+    builder: &aster::AstBuilder,
+    structure_ty: P<ast::Ty>,
+    variant_ty: P<ast::Ty>,
+    struct_def: &StructDef,
+    generics: &ast::Generics,
+    value_exprs: I,
+) -> (P<ast::Item>, P<ast::Item>)
+    where I: Iterator<Item=P<ast::Expr>>,
+{
+    let len = struct_def.fields.len();
+
+    let field_attrs = struct_field_attrs(cx, builder, struct_def);
+
+    let arms: Vec<ast::Arm> = field_attrs.into_iter()
+        .zip(value_exprs)
+        .enumerate()
+        .map(|(i, (field, value_expr))| {
+            let key_expr = field.serializer_key_expr(cx);
+            quote_arm!(cx,
+                $i => {
+                    self.state += 1;
+                    Ok(
+                        Some(
+                            try!(
+                                serializer.visit_map_elt(
+                                    $key_expr,
+                                    $value_expr,
+                                )
+                            )
+                        )
+                    )
+                }
+            )
+        })
+        .collect();
+
+    let visitor_impl_generics = builder.from_generics(generics.clone())
+        .add_lifetime_bound("'__a")
+        .lifetime_name("'__a")
+        .build();
+
+    let where_clause = &visitor_impl_generics.where_clause;
+
+    let visitor_generics = builder.from_generics(visitor_impl_generics.clone())
+        .strip_bounds()
+        .build();
+
+    // Variants don't necessarily reference all generic lifetimes and type parameters,
+    // so to avoid a compilation failure, we'll just add a phantom type to capture these
+    // unused values.
+    let structure_ty = builder.ty()
+        .phantom_data()
+        .build(structure_ty);
+
+    (
+        quote_item!(cx,
+            struct Visitor $visitor_impl_generics $where_clause {
+                state: usize,
+                value: $variant_ty,
+                _structure_ty: $structure_ty,
+            }
+        ).unwrap(),
+
+        quote_item!(cx,
+            impl $visitor_impl_generics
+            ::serde::ser::MapVisitor
+            for Visitor $visitor_generics
+            $where_clause {
+                #[inline]
+                fn visit<S>(&mut self, serializer: &mut S) -> ::std::result::Result<Option<()>, S::Error>
+                    where S: ::serde::ser::Serializer,
+                {
+                    match self.state {
+                        $arms
+                        _ => Ok(None)
+                    }
+                }
+
+                #[inline]
+                fn len(&self) -> Option<usize> {
+                    Some($len)
+                }
+            }
+        ).unwrap(),
+    )
+}

serde_derive/Cargo.toml

@@ -1,32 +0,0 @@
-[package]
-name = "serde_derive"
-version = "1.0.77" # remember to update html_root_url
-authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
-license = "MIT/Apache-2.0"
-description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
-homepage = "https://serde.rs"
-repository = "https://github.com/serde-rs/serde"
-documentation = "https://serde.rs/codegen.html"
-keywords = ["serde", "serialization", "no_std"]
-readme = "crates-io.md"
-include = ["Cargo.toml", "src/**/*.rs", "crates-io.md", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
-
-[badges]
-travis-ci = { repository = "serde-rs/serde" }
-appveyor = { repository = "serde-rs/serde" }
-
-[features]
-default = []
-deserialize_in_place = []
-
-[lib]
-name = "serde_derive"
-proc-macro = true
-
-[dependencies]
-proc-macro2 = "0.4"
-quote = "0.6.3"
-syn = { version = "0.15", features = ["visit"] }
-
-[dev-dependencies]
-serde = { version = "1.0", path = "../serde" }

serde_derive/LICENSE-APACHE

@@ -1 +0,0 @@
-../LICENSE-APACHE

serde_derive/LICENSE-MIT

@@ -1 +0,0 @@
-../LICENSE-MIT

serde_derive/README.md

@@ -1 +0,0 @@
-../README.md

serde_derive/crates-io.md

@@ -1 +0,0 @@
-../crates-io.md

serde_derive/src/bound.rs

@@ -1,316 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use std::collections::HashSet;
-
-use syn;
-use syn::punctuated::{Pair, Punctuated};
-use syn::visit::{self, Visit};
-
-use internals::ast::{Container, Data};
-use internals::attr;
-
-use proc_macro2::Span;
-
-// Remove the default from every type parameter because in the generated impls
-// they look like associated types: "error: associated type bindings are not
-// allowed here".
-pub fn without_defaults(generics: &syn::Generics) -> syn::Generics {
-    syn::Generics {
-        params: generics
-            .params
-            .iter()
-            .map(|param| match *param {
-                syn::GenericParam::Type(ref param) => syn::GenericParam::Type(syn::TypeParam {
-                    eq_token: None,
-                    default: None,
-                    ..param.clone()
-                }),
-                _ => param.clone(),
-            }).collect(),
-        ..generics.clone()
-    }
-}
-
-pub fn with_where_predicates(
-    generics: &syn::Generics,
-    predicates: &[syn::WherePredicate],
-) -> syn::Generics {
-    let mut generics = generics.clone();
-    generics
-        .make_where_clause()
-        .predicates
-        .extend(predicates.into_iter().cloned());
-    generics
-}
-
-pub fn with_where_predicates_from_fields(
-    cont: &Container,
-    generics: &syn::Generics,
-    from_field: fn(&attr::Field) -> Option<&[syn::WherePredicate]>,
-) -> syn::Generics {
-    let predicates = cont
-        .data
-        .all_fields()
-        .flat_map(|field| from_field(&field.attrs))
-        .flat_map(|predicates| predicates.to_vec());
-
-    let mut generics = generics.clone();
-    generics.make_where_clause().predicates.extend(predicates);
-    generics
-}
-
-pub fn with_where_predicates_from_variants(
-    cont: &Container,
-    generics: &syn::Generics,
-    from_variant: fn(&attr::Variant) -> Option<&[syn::WherePredicate]>,
-) -> syn::Generics {
-    let variants = match cont.data {
-        Data::Enum(ref variants) => variants,
-        Data::Struct(_, _) => {
-            return generics.clone();
-        }
-    };
-
-    let predicates = variants
-        .iter()
-        .flat_map(|variant| from_variant(&variant.attrs))
-        .flat_map(|predicates| predicates.to_vec());
-
-    let mut generics = generics.clone();
-    generics.make_where_clause().predicates.extend(predicates);
-    generics
-}
-
-// Puts the given bound on any generic type parameters that are used in fields
-// for which filter returns true.
-//
-// For example, the following struct needs the bound `A: Serialize, B:
-// Serialize`.
-//
-//     struct S<'b, A, B: 'b, C> {
-//         a: A,
-//         b: Option<&'b B>
-//         #[serde(skip_serializing)]
-//         c: C,
-//     }
-pub fn with_bound(
-    cont: &Container,
-    generics: &syn::Generics,
-    filter: fn(&attr::Field, Option<&attr::Variant>) -> bool,
-    bound: &syn::Path,
-) -> syn::Generics {
-    struct FindTyParams<'ast> {
-        // Set of all generic type parameters on the current struct (A, B, C in
-        // the example). Initialized up front.
-        all_type_params: HashSet<syn::Ident>,
-
-        // Set of generic type parameters used in fields for which filter
-        // returns true (A and B in the example). Filled in as the visitor sees
-        // them.
-        relevant_type_params: HashSet<syn::Ident>,
-
-        // Fields whose type is an associated type of one of the generic type
-        // parameters.
-        associated_type_usage: Vec<&'ast syn::TypePath>,
-    }
-    impl<'ast> Visit<'ast> for FindTyParams<'ast> {
-        fn visit_field(&mut self, field: &'ast syn::Field) {
-            if let syn::Type::Path(ref ty) = field.ty {
-                if let Some(Pair::Punctuated(ref t, _)) = ty.path.segments.first() {
-                    if self.all_type_params.contains(&t.ident) {
-                        self.associated_type_usage.push(ty);
-                    }
-                }
-            }
-            self.visit_type(&field.ty);
-        }
-
-        fn visit_path(&mut self, path: &'ast syn::Path) {
-            if let Some(seg) = path.segments.last() {
-                if seg.into_value().ident == "PhantomData" {
-                    // Hardcoded exception, because PhantomData<T> implements
-                    // Serialize and Deserialize whether or not T implements it.
-                    return;
-                }
-            }
-            if path.leading_colon.is_none() && path.segments.len() == 1 {
-                let id = &path.segments[0].ident;
-                if self.all_type_params.contains(id) {
-                    self.relevant_type_params.insert(id.clone());
-                }
-            }
-            visit::visit_path(self, path);
-        }
-
-        // Type parameter should not be considered used by a macro path.
-        //
-        //     struct TypeMacro<T> {
-        //         mac: T!(),
-        //         marker: PhantomData<T>,
-        //     }
-        fn visit_macro(&mut self, _mac: &'ast syn::Macro) {}
-    }
-
-    let all_type_params = generics
-        .type_params()
-        .map(|param| param.ident.clone())
-        .collect();
-
-    let mut visitor = FindTyParams {
-        all_type_params: all_type_params,
-        relevant_type_params: HashSet::new(),
-        associated_type_usage: Vec::new(),
-    };
-    match cont.data {
-        Data::Enum(ref variants) => for variant in variants.iter() {
-            let relevant_fields = variant
-                .fields
-                .iter()
-                .filter(|field| filter(&field.attrs, Some(&variant.attrs)));
-            for field in relevant_fields {
-                visitor.visit_field(field.original);
-            }
-        },
-        Data::Struct(_, ref fields) => {
-            for field in fields.iter().filter(|field| filter(&field.attrs, None)) {
-                visitor.visit_field(field.original);
-            }
-        }
-    }
-
-    let relevant_type_params = visitor.relevant_type_params;
-    let associated_type_usage = visitor.associated_type_usage;
-    let new_predicates = generics
-        .type_params()
-        .map(|param| param.ident.clone())
-        .filter(|id| relevant_type_params.contains(id))
-        .map(|id| syn::TypePath {
-            qself: None,
-            path: id.into(),
-        }).chain(associated_type_usage.into_iter().cloned())
-        .map(|bounded_ty| {
-            syn::WherePredicate::Type(syn::PredicateType {
-                lifetimes: None,
-                // the type parameter that is being bounded e.g. T
-                bounded_ty: syn::Type::Path(bounded_ty),
-                colon_token: <Token![:]>::default(),
-                // the bound e.g. Serialize
-                bounds: vec![syn::TypeParamBound::Trait(syn::TraitBound {
-                    paren_token: None,
-                    modifier: syn::TraitBoundModifier::None,
-                    lifetimes: None,
-                    path: bound.clone(),
-                })].into_iter()
-                .collect(),
-            })
-        });
-
-    let mut generics = generics.clone();
-    generics
-        .make_where_clause()
-        .predicates
-        .extend(new_predicates);
-    generics
-}
-
-pub fn with_self_bound(
-    cont: &Container,
-    generics: &syn::Generics,
-    bound: &syn::Path,
-) -> syn::Generics {
-    let mut generics = generics.clone();
-    generics
-        .make_where_clause()
-        .predicates
-        .push(syn::WherePredicate::Type(syn::PredicateType {
-            lifetimes: None,
-            // the type that is being bounded e.g. MyStruct<'a, T>
-            bounded_ty: type_of_item(cont),
-            colon_token: <Token![:]>::default(),
-            // the bound e.g. Default
-            bounds: vec![syn::TypeParamBound::Trait(syn::TraitBound {
-                paren_token: None,
-                modifier: syn::TraitBoundModifier::None,
-                lifetimes: None,
-                path: bound.clone(),
-            })].into_iter()
-            .collect(),
-        }));
-    generics
-}
-
-pub fn with_lifetime_bound(generics: &syn::Generics, lifetime: &str) -> syn::Generics {
-    let bound = syn::Lifetime::new(lifetime, Span::call_site());
-    let def = syn::LifetimeDef {
-        attrs: Vec::new(),
-        lifetime: bound.clone(),
-        colon_token: None,
-        bounds: Punctuated::new(),
-    };
-
-    let params = Some(syn::GenericParam::Lifetime(def))
-        .into_iter()
-        .chain(generics.params.iter().cloned().map(|mut param| {
-            match param {
-                syn::GenericParam::Lifetime(ref mut param) => {
-                    param.bounds.push(bound.clone());
-                }
-                syn::GenericParam::Type(ref mut param) => {
-                    param
-                        .bounds
-                        .push(syn::TypeParamBound::Lifetime(bound.clone()));
-                }
-                syn::GenericParam::Const(_) => {}
-            }
-            param
-        })).collect();
-
-    syn::Generics {
-        params: params,
-        ..generics.clone()
-    }
-}
-
-fn type_of_item(cont: &Container) -> syn::Type {
-    syn::Type::Path(syn::TypePath {
-        qself: None,
-        path: syn::Path {
-            leading_colon: None,
-            segments: vec![syn::PathSegment {
-                ident: cont.ident.clone(),
-                arguments: syn::PathArguments::AngleBracketed(
-                    syn::AngleBracketedGenericArguments {
-                        colon2_token: None,
-                        lt_token: <Token![<]>::default(),
-                        args: cont
-                            .generics
-                            .params
-                            .iter()
-                            .map(|param| match *param {
-                                syn::GenericParam::Type(ref param) => {
-                                    syn::GenericArgument::Type(syn::Type::Path(syn::TypePath {
-                                        qself: None,
-                                        path: param.ident.clone().into(),
-                                    }))
-                                }
-                                syn::GenericParam::Lifetime(ref param) => {
-                                    syn::GenericArgument::Lifetime(param.lifetime.clone())
-                                }
-                                syn::GenericParam::Const(_) => {
-                                    panic!("Serde does not support const generics yet");
-                                }
-                            }).collect(),
-                        gt_token: <Token![>]>::default(),
-                    },
-                ),
-            }].into_iter()
-            .collect(),
-        },
-    })
-}

serde_derive/src/fragment.rs

@@ -1,82 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use proc_macro2::TokenStream;
-use quote::ToTokens;
-use syn::token;
-
-pub enum Fragment {
-    /// Tokens that can be used as an expression.
-    Expr(TokenStream),
-    /// Tokens that can be used inside a block. The surrounding curly braces are
-    /// not part of these tokens.
-    Block(TokenStream),
-}
-
-macro_rules! quote_expr {
-    ($($tt:tt)*) => {
-        $crate::fragment::Fragment::Expr(quote!($($tt)*))
-    }
-}
-
-macro_rules! quote_block {
-    ($($tt:tt)*) => {
-        $crate::fragment::Fragment::Block(quote!($($tt)*))
-    }
-}
-
-/// Interpolate a fragment in place of an expression. This involves surrounding
-/// Block fragments in curly braces.
-pub struct Expr(pub Fragment);
-impl ToTokens for Expr {
-    fn to_tokens(&self, out: &mut TokenStream) {
-        match self.0 {
-            Fragment::Expr(ref expr) => expr.to_tokens(out),
-            Fragment::Block(ref block) => {
-                token::Brace::default().surround(out, |out| block.to_tokens(out));
-            }
-        }
-    }
-}
-
-/// Interpolate a fragment as the statements of a block.
-pub struct Stmts(pub Fragment);
-impl ToTokens for Stmts {
-    fn to_tokens(&self, out: &mut TokenStream) {
-        match self.0 {
-            Fragment::Expr(ref expr) => expr.to_tokens(out),
-            Fragment::Block(ref block) => block.to_tokens(out),
-        }
-    }
-}
-
-/// Interpolate a fragment as the value part of a `match` expression. This
-/// involves putting a comma after expressions and curly braces around blocks.
-pub struct Match(pub Fragment);
-impl ToTokens for Match {
-    fn to_tokens(&self, out: &mut TokenStream) {
-        match self.0 {
-            Fragment::Expr(ref expr) => {
-                expr.to_tokens(out);
-                <Token![,]>::default().to_tokens(out);
-            }
-            Fragment::Block(ref block) => {
-                token::Brace::default().surround(out, |out| block.to_tokens(out));
-            }
-        }
-    }
-}
-
-impl AsRef<TokenStream> for Fragment {
-    fn as_ref(&self) -> &TokenStream {
-        match *self {
-            Fragment::Expr(ref expr) => expr,
-            Fragment::Block(ref block) => block,
-        }
-    }
-}

serde_derive/src/internals/ast.rs

@@ -1,176 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use internals::attr;
-use internals::check;
-use internals::{Ctxt, Derive};
-use syn;
-use syn::punctuated::Punctuated;
-
-pub struct Container<'a> {
-    pub ident: syn::Ident,
-    pub attrs: attr::Container,
-    pub data: Data<'a>,
-    pub generics: &'a syn::Generics,
-}
-
-pub enum Data<'a> {
-    Enum(Vec<Variant<'a>>),
-    Struct(Style, Vec<Field<'a>>),
-}
-
-pub struct Variant<'a> {
-    pub ident: syn::Ident,
-    pub attrs: attr::Variant,
-    pub style: Style,
-    pub fields: Vec<Field<'a>>,
-}
-
-pub struct Field<'a> {
-    pub member: syn::Member,
-    pub attrs: attr::Field,
-    pub ty: &'a syn::Type,
-    pub original: &'a syn::Field,
-}
-
-#[derive(Copy, Clone)]
-pub enum Style {
-    Struct,
-    Tuple,
-    Newtype,
-    Unit,
-}
-
-impl<'a> Container<'a> {
-    pub fn from_ast(cx: &Ctxt, item: &'a syn::DeriveInput, derive: Derive) -> Container<'a> {
-        let mut attrs = attr::Container::from_ast(cx, item);
-
-        let mut data = match item.data {
-            syn::Data::Enum(ref data) => {
-                Data::Enum(enum_from_ast(cx, &data.variants, attrs.default()))
-            }
-            syn::Data::Struct(ref data) => {
-                let (style, fields) = struct_from_ast(cx, &data.fields, None, attrs.default());
-                Data::Struct(style, fields)
-            }
-            syn::Data::Union(_) => {
-                panic!("Serde does not support derive for unions");
-            }
-        };
-
-        let mut has_flatten = false;
-        match data {
-            Data::Enum(ref mut variants) => for variant in variants {
-                variant.attrs.rename_by_rule(attrs.rename_all());
-                for field in &mut variant.fields {
-                    if field.attrs.flatten() {
-                        has_flatten = true;
-                    }
-                    field.attrs.rename_by_rule(variant.attrs.rename_all());
-                }
-            },
-            Data::Struct(_, ref mut fields) => for field in fields {
-                if field.attrs.flatten() {
-                    has_flatten = true;
-                }
-                field.attrs.rename_by_rule(attrs.rename_all());
-            },
-        }
-
-        if has_flatten {
-            attrs.mark_has_flatten();
-        }
-
-        let mut item = Container {
-            ident: item.ident.clone(),
-            attrs: attrs,
-            data: data,
-            generics: &item.generics,
-        };
-        check::check(cx, &mut item, derive);
-        item
-    }
-}
-
-impl<'a> Data<'a> {
-    pub fn all_fields(&'a self) -> Box<Iterator<Item = &'a Field<'a>> + 'a> {
-        match *self {
-            Data::Enum(ref variants) => {
-                Box::new(variants.iter().flat_map(|variant| variant.fields.iter()))
-            }
-            Data::Struct(_, ref fields) => Box::new(fields.iter()),
-        }
-    }
-
-    pub fn has_getter(&self) -> bool {
-        self.all_fields().any(|f| f.attrs.getter().is_some())
-    }
-}
-
-fn enum_from_ast<'a>(
-    cx: &Ctxt,
-    variants: &'a Punctuated<syn::Variant, Token![,]>,
-    container_default: &attr::Default,
-) -> Vec<Variant<'a>> {
-    variants
-        .iter()
-        .map(|variant| {
-            let attrs = attr::Variant::from_ast(cx, variant);
-            let (style, fields) =
-                struct_from_ast(cx, &variant.fields, Some(&attrs), container_default);
-            Variant {
-                ident: variant.ident.clone(),
-                attrs: attrs,
-                style: style,
-                fields: fields,
-            }
-        }).collect()
-}
-
-fn struct_from_ast<'a>(
-    cx: &Ctxt,
-    fields: &'a syn::Fields,
-    attrs: Option<&attr::Variant>,
-    container_default: &attr::Default,
-) -> (Style, Vec<Field<'a>>) {
-    match *fields {
-        syn::Fields::Named(ref fields) => (
-            Style::Struct,
-            fields_from_ast(cx, &fields.named, attrs, container_default),
-        ),
-        syn::Fields::Unnamed(ref fields) if fields.unnamed.len() == 1 => (
-            Style::Newtype,
-            fields_from_ast(cx, &fields.unnamed, attrs, container_default),
-        ),
-        syn::Fields::Unnamed(ref fields) => (
-            Style::Tuple,
-            fields_from_ast(cx, &fields.unnamed, attrs, container_default),
-        ),
-        syn::Fields::Unit => (Style::Unit, Vec::new()),
-    }
-}
-
-fn fields_from_ast<'a>(
-    cx: &Ctxt,
-    fields: &'a Punctuated<syn::Field, Token![,]>,
-    attrs: Option<&attr::Variant>,
-    container_default: &attr::Default,
-) -> Vec<Field<'a>> {
-    fields
-        .iter()
-        .enumerate()
-        .map(|(i, field)| Field {
-            member: match field.ident {
-                Some(ref ident) => syn::Member::Named(ident.clone()),
-                None => syn::Member::Unnamed(i.into()),
-            },
-            attrs: attr::Field::from_ast(cx, i, field, attrs, container_default),
-            ty: &field.ty,
-            original: field,
-        }).collect()
-}

serde_derive/src/internals/case.rs

@@ -1,176 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// See https://users.rust-lang.org/t/psa-dealing-with-warning-unused-import-std-ascii-asciiext-in-today-s-nightly/13726
-#[allow(deprecated, unused_imports)]
-use std::ascii::AsciiExt;
-
-use std::str::FromStr;
-
-use self::RenameRule::*;
-
-#[derive(PartialEq)]
-pub enum RenameRule {
-    /// Don't apply a default rename rule.
-    None,
-    /// Rename direct children to "lowercase" style.
-    LowerCase,
-    /// Rename direct children to "UPPERCASE" style.
-    UPPERCASE,
-    /// Rename direct children to "PascalCase" style, as typically used for
-    /// enum variants.
-    PascalCase,
-    /// Rename direct children to "camelCase" style.
-    CamelCase,
-    /// Rename direct children to "snake_case" style, as commonly used for
-    /// fields.
-    SnakeCase,
-    /// Rename direct children to "SCREAMING_SNAKE_CASE" style, as commonly
-    /// used for constants.
-    ScreamingSnakeCase,
-    /// Rename direct children to "kebab-case" style.
-    KebabCase,
-    /// Rename direct children to "SCREAMING-KEBAB-CASE" style.
-    ScreamingKebabCase,
-}
-
-impl RenameRule {
-    pub fn apply_to_variant(&self, variant: &str) -> String {
-        match *self {
-            None | PascalCase => variant.to_owned(),
-            LowerCase => variant.to_ascii_lowercase(),
-            UPPERCASE => variant.to_ascii_uppercase(),
-            CamelCase => variant[..1].to_ascii_lowercase() + &variant[1..],
-            SnakeCase => {
-                let mut snake = String::new();
-                for (i, ch) in variant.char_indices() {
-                    if i > 0 && ch.is_uppercase() {
-                        snake.push('_');
-                    }
-                    snake.push(ch.to_ascii_lowercase());
-                }
-                snake
-            }
-            ScreamingSnakeCase => SnakeCase.apply_to_variant(variant).to_ascii_uppercase(),
-            KebabCase => SnakeCase.apply_to_variant(variant).replace('_', "-"),
-            ScreamingKebabCase => ScreamingSnakeCase
-                .apply_to_variant(variant)
-                .replace('_', "-"),
-        }
-    }
-
-    pub fn apply_to_field(&self, field: &str) -> String {
-        match *self {
-            None | LowerCase | SnakeCase => field.to_owned(),
-            UPPERCASE => field.to_ascii_uppercase(),
-            PascalCase => {
-                let mut pascal = String::new();
-                let mut capitalize = true;
-                for ch in field.chars() {
-                    if ch == '_' {
-                        capitalize = true;
-                    } else if capitalize {
-                        pascal.push(ch.to_ascii_uppercase());
-                        capitalize = false;
-                    } else {
-                        pascal.push(ch);
-                    }
-                }
-                pascal
-            }
-            CamelCase => {
-                let pascal = PascalCase.apply_to_field(field);
-                pascal[..1].to_ascii_lowercase() + &pascal[1..]
-            }
-            ScreamingSnakeCase => field.to_ascii_uppercase(),
-            KebabCase => field.replace('_', "-"),
-            ScreamingKebabCase => ScreamingSnakeCase.apply_to_field(field).replace('_', "-"),
-        }
-    }
-}
-
-impl FromStr for RenameRule {
-    type Err = ();
-
-    fn from_str(rename_all_str: &str) -> Result<Self, Self::Err> {
-        match rename_all_str {
-            "lowercase" => Ok(LowerCase),
-            "UPPERCASE" => Ok(UPPERCASE),
-            "PascalCase" => Ok(PascalCase),
-            "camelCase" => Ok(CamelCase),
-            "snake_case" => Ok(SnakeCase),
-            "SCREAMING_SNAKE_CASE" => Ok(ScreamingSnakeCase),
-            "kebab-case" => Ok(KebabCase),
-            "SCREAMING-KEBAB-CASE" => Ok(ScreamingKebabCase),
-            _ => Err(()),
-        }
-    }
-}
-
-#[test]
-fn rename_variants() {
-    for &(original, lower, upper, camel, snake, screaming, kebab, screaming_kebab) in &[
-        (
-            "Outcome", "outcome", "OUTCOME", "outcome", "outcome", "OUTCOME", "outcome", "OUTCOME",
-        ),
-        (
-            "VeryTasty",
-            "verytasty",
-            "VERYTASTY",
-            "veryTasty",
-            "very_tasty",
-            "VERY_TASTY",
-            "very-tasty",
-            "VERY-TASTY",
-        ),
-        ("A", "a", "A", "a", "a", "A", "a", "A"),
-        ("Z42", "z42", "Z42", "z42", "z42", "Z42", "z42", "Z42"),
-    ] {
-        assert_eq!(None.apply_to_variant(original), original);
-        assert_eq!(LowerCase.apply_to_variant(original), lower);
-        assert_eq!(UPPERCASE.apply_to_variant(original), upper);
-        assert_eq!(PascalCase.apply_to_variant(original), original);
-        assert_eq!(CamelCase.apply_to_variant(original), camel);
-        assert_eq!(SnakeCase.apply_to_variant(original), snake);
-        assert_eq!(ScreamingSnakeCase.apply_to_variant(original), screaming);
-        assert_eq!(KebabCase.apply_to_variant(original), kebab);
-        assert_eq!(
-            ScreamingKebabCase.apply_to_variant(original),
-            screaming_kebab
-        );
-    }
-}
-
-#[test]
-fn rename_fields() {
-    for &(original, upper, pascal, camel, screaming, kebab, screaming_kebab) in &[
-        (
-            "outcome", "OUTCOME", "Outcome", "outcome", "OUTCOME", "outcome", "OUTCOME",
-        ),
-        (
-            "very_tasty",
-            "VERY_TASTY",
-            "VeryTasty",
-            "veryTasty",
-            "VERY_TASTY",
-            "very-tasty",
-            "VERY-TASTY",
-        ),
-        ("a", "A", "A", "a", "A", "a", "A"),
-        ("z42", "Z42", "Z42", "z42", "Z42", "z42", "Z42"),
-    ] {
-        assert_eq!(None.apply_to_field(original), original);
-        assert_eq!(UPPERCASE.apply_to_field(original), upper);
-        assert_eq!(PascalCase.apply_to_field(original), pascal);
-        assert_eq!(CamelCase.apply_to_field(original), camel);
-        assert_eq!(SnakeCase.apply_to_field(original), original);
-        assert_eq!(ScreamingSnakeCase.apply_to_field(original), screaming);
-        assert_eq!(KebabCase.apply_to_field(original), kebab);
-        assert_eq!(ScreamingKebabCase.apply_to_field(original), screaming_kebab);
-    }
-}

serde_derive/src/internals/check.rs

@@ -1,355 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use internals::ast::{Container, Data, Field, Style};
-use internals::attr::{EnumTag, Identifier};
-use internals::{Ctxt, Derive};
-use syn::{Member, Type};
-
-/// Cross-cutting checks that require looking at more than a single attrs
-/// object. Simpler checks should happen when parsing and building the attrs.
-pub fn check(cx: &Ctxt, cont: &mut Container, derive: Derive) {
-    check_getter(cx, cont);
-    check_flatten(cx, cont);
-    check_identifier(cx, cont);
-    check_variant_skip_attrs(cx, cont);
-    check_internal_tag_field_name_conflict(cx, cont);
-    check_adjacent_tag_conflict(cx, cont);
-    check_transparent(cx, cont, derive);
-}
-
-/// Getters are only allowed inside structs (not enums) with the `remote`
-/// attribute.
-fn check_getter(cx: &Ctxt, cont: &Container) {
-    match cont.data {
-        Data::Enum(_) => {
-            if cont.data.has_getter() {
-                cx.error("#[serde(getter = \"...\")] is not allowed in an enum");
-            }
-        }
-        Data::Struct(_, _) => {
-            if cont.data.has_getter() && cont.attrs.remote().is_none() {
-                cx.error(
-                    "#[serde(getter = \"...\")] can only be used in structs \
-                     that have #[serde(remote = \"...\")]",
-                );
-            }
-        }
-    }
-}
-
-/// Flattening has some restrictions we can test.
-fn check_flatten(cx: &Ctxt, cont: &Container) {
-    match cont.data {
-        Data::Enum(ref variants) => {
-            for variant in variants {
-                for field in &variant.fields {
-                    check_flatten_field(cx, variant.style, field);
-                }
-            }
-        }
-        Data::Struct(style, ref fields) => {
-            for field in fields {
-                check_flatten_field(cx, style, field);
-            }
-        }
-    }
-}
-
-fn check_flatten_field(cx: &Ctxt, style: Style, field: &Field) {
-    if !field.attrs.flatten() {
-        return;
-    }
-    match style {
-        Style::Tuple => {
-            cx.error("#[serde(flatten)] cannot be used on tuple structs");
-        }
-        Style::Newtype => {
-            cx.error("#[serde(flatten)] cannot be used on newtype structs");
-        }
-        _ => {}
-    }
-    if field.attrs.skip_serializing() {
-        cx.error(
-            "#[serde(flatten] can not be combined with \
-             #[serde(skip_serializing)]",
-        );
-    } else if field.attrs.skip_serializing_if().is_some() {
-        cx.error(
-            "#[serde(flatten] can not be combined with \
-             #[serde(skip_serializing_if = \"...\")]",
-        );
-    } else if field.attrs.skip_deserializing() {
-        cx.error(
-            "#[serde(flatten] can not be combined with \
-             #[serde(skip_deserializing)]",
-        );
-    }
-}
-
-/// The `other` attribute must be used at most once and it must be the last
-/// variant of an enum that has the `field_identifier` attribute.
-///
-/// Inside a `variant_identifier` all variants must be unit variants. Inside a
-/// `field_identifier` all but possibly one variant must be unit variants. The
-/// last variant may be a newtype variant which is an implicit "other" case.
-fn check_identifier(cx: &Ctxt, cont: &Container) {
-    let variants = match cont.data {
-        Data::Enum(ref variants) => variants,
-        Data::Struct(_, _) => {
-            return;
-        }
-    };
-
-    for (i, variant) in variants.iter().enumerate() {
-        match (
-            variant.style,
-            cont.attrs.identifier(),
-            variant.attrs.other(),
-        ) {
-            // The `other` attribute may only be used in a field_identifier.
-            (_, Identifier::Variant, true) | (_, Identifier::No, true) => {
-                cx.error("#[serde(other)] may only be used inside a field_identifier");
-            }
-
-            // Variant with `other` attribute must be the last one.
-            (Style::Unit, Identifier::Field, true) => {
-                if i < variants.len() - 1 {
-                    cx.error("#[serde(other)] must be the last variant");
-                }
-            }
-
-            // Variant with `other` attribute must be a unit variant.
-            (_, Identifier::Field, true) => {
-                cx.error("#[serde(other)] must be on a unit variant");
-            }
-
-            // Any sort of variant is allowed if this is not an identifier.
-            (_, Identifier::No, false) => {}
-
-            // Unit variant without `other` attribute is always fine.
-            (Style::Unit, _, false) => {}
-
-            // The last field is allowed to be a newtype catch-all.
-            (Style::Newtype, Identifier::Field, false) => {
-                if i < variants.len() - 1 {
-                    cx.error(format!("`{}` must be the last variant", variant.ident));
-                }
-            }
-
-            (_, Identifier::Field, false) => {
-                cx.error("field_identifier may only contain unit variants");
-            }
-
-            (_, Identifier::Variant, false) => {
-                cx.error("variant_identifier may only contain unit variants");
-            }
-        }
-    }
-}
-
-/// Skip-(de)serializing attributes are not allowed on variants marked
-/// (de)serialize_with.
-fn check_variant_skip_attrs(cx: &Ctxt, cont: &Container) {
-    let variants = match cont.data {
-        Data::Enum(ref variants) => variants,
-        Data::Struct(_, _) => {
-            return;
-        }
-    };
-
-    for variant in variants.iter() {
-        if variant.attrs.serialize_with().is_some() {
-            if variant.attrs.skip_serializing() {
-                cx.error(format!(
-                    "variant `{}` cannot have both #[serde(serialize_with)] and \
-                     #[serde(skip_serializing)]",
-                    variant.ident
-                ));
-            }
-
-            for field in &variant.fields {
-                let member = member_message(&field.member);
-
-                if field.attrs.skip_serializing() {
-                    cx.error(format!(
-                        "variant `{}` cannot have both #[serde(serialize_with)] and \
-                         a field {} marked with #[serde(skip_serializing)]",
-                        variant.ident, member
-                    ));
-                }
-
-                if field.attrs.skip_serializing_if().is_some() {
-                    cx.error(format!(
-                        "variant `{}` cannot have both #[serde(serialize_with)] and \
-                         a field {} marked with #[serde(skip_serializing_if)]",
-                        variant.ident, member
-                    ));
-                }
-            }
-        }
-
-        if variant.attrs.deserialize_with().is_some() {
-            if variant.attrs.skip_deserializing() {
-                cx.error(format!(
-                    "variant `{}` cannot have both #[serde(deserialize_with)] and \
-                     #[serde(skip_deserializing)]",
-                    variant.ident
-                ));
-            }
-
-            for field in &variant.fields {
-                if field.attrs.skip_deserializing() {
-                    let member = member_message(&field.member);
-
-                    cx.error(format!(
-                        "variant `{}` cannot have both #[serde(deserialize_with)] \
-                         and a field {} marked with #[serde(skip_deserializing)]",
-                        variant.ident, member
-                    ));
-                }
-            }
-        }
-    }
-}
-
-/// The tag of an internally-tagged struct variant must not be
-/// the same as either one of its fields, as this would result in
-/// duplicate keys in the serialized output and/or ambiguity in
-/// the to-be-deserialized input.
-fn check_internal_tag_field_name_conflict(cx: &Ctxt, cont: &Container) {
-    let variants = match cont.data {
-        Data::Enum(ref variants) => variants,
-        Data::Struct(_, _) => return,
-    };
-
-    let tag = match *cont.attrs.tag() {
-        EnumTag::Internal { ref tag } => tag.as_str(),
-        EnumTag::External | EnumTag::Adjacent { .. } | EnumTag::None => return,
-    };
-
-    let diagnose_conflict = || {
-        let message = format!("variant field name `{}` conflicts with internal tag", tag);
-        cx.error(message);
-    };
-
-    for variant in variants {
-        match variant.style {
-            Style::Struct => {
-                for field in &variant.fields {
-                    let check_ser = !field.attrs.skip_serializing();
-                    let check_de = !field.attrs.skip_deserializing();
-                    let name = field.attrs.name();
-                    let ser_name = name.serialize_name();
-                    let de_name = name.deserialize_name();
-
-                    if check_ser && ser_name == tag || check_de && de_name == tag {
-                        diagnose_conflict();
-                        return;
-                    }
-                }
-            }
-            Style::Unit | Style::Newtype | Style::Tuple => {}
-        }
-    }
-}
-
-/// In the case of adjacently-tagged enums, the type and the
-/// contents tag must differ, for the same reason.
-fn check_adjacent_tag_conflict(cx: &Ctxt, cont: &Container) {
-    let (type_tag, content_tag) = match *cont.attrs.tag() {
-        EnumTag::Adjacent {
-            ref tag,
-            ref content,
-        } => (tag, content),
-        EnumTag::Internal { .. } | EnumTag::External | EnumTag::None => return,
-    };
-
-    if type_tag == content_tag {
-        let message = format!(
-            "enum tags `{}` for type and content conflict with each other",
-            type_tag
-        );
-        cx.error(message);
-    }
-}
-
-/// Enums and unit structs cannot be transparent.
-fn check_transparent(cx: &Ctxt, cont: &mut Container, derive: Derive) {
-    if !cont.attrs.transparent() {
-        return;
-    }
-
-    if cont.attrs.type_from().is_some() {
-        cx.error("#[serde(transparent)] is not allowed with #[serde(from = \"...\")]");
-    }
-
-    if cont.attrs.type_into().is_some() {
-        cx.error("#[serde(transparent)] is not allowed with #[serde(into = \"...\")]");
-    }
-
-    let fields = match cont.data {
-        Data::Enum(_) => {
-            cx.error("#[serde(transparent)] is not allowed on an enum");
-            return;
-        }
-        Data::Struct(Style::Unit, _) => {
-            cx.error("#[serde(transparent)] is not allowed on a unit struct");
-            return;
-        }
-        Data::Struct(_, ref mut fields) => fields,
-    };
-
-    let mut transparent_field = None;
-
-    for field in fields {
-        if allow_transparent(field, derive) {
-            if transparent_field.is_some() {
-                cx.error(
-                    "#[serde(transparent)] requires struct to have at most one transparent field",
-                );
-                return;
-            }
-            transparent_field = Some(field);
-        }
-    }
-
-    match transparent_field {
-        Some(transparent_field) => transparent_field.attrs.mark_transparent(),
-        None => match derive {
-            Derive::Serialize => {
-                cx.error("#[serde(transparent)] requires at least one field that is not skipped");
-            }
-            Derive::Deserialize => {
-                cx.error("#[serde(transparent)] requires at least one field that is neither skipped nor has a default");
-            }
-        },
-    }
-}
-
-fn member_message(member: &Member) -> String {
-    match *member {
-        Member::Named(ref ident) => format!("`{}`", ident),
-        Member::Unnamed(ref i) => i.index.to_string(),
-    }
-}
-
-fn allow_transparent(field: &Field, derive: Derive) -> bool {
-    if let Type::Path(ref ty) = *field.ty {
-        if let Some(seg) = ty.path.segments.last() {
-            if seg.into_value().ident == "PhantomData" {
-                return false;
-            }
-        }
-    }
-
-    match derive {
-        Derive::Serialize => !field.attrs.skip_serializing(),
-        Derive::Deserialize => !field.attrs.skip_deserializing() && field.attrs.default().is_none(),
-    }
-}

serde_derive/src/internals/ctxt.rs

@@ -1,56 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use std::cell::RefCell;
-use std::fmt::Display;
-use std::thread;
-
-#[derive(Default)]
-pub struct Ctxt {
-    errors: RefCell<Option<Vec<String>>>,
-}
-
-impl Ctxt {
-    pub fn new() -> Self {
-        Ctxt {
-            errors: RefCell::new(Some(Vec::new())),
-        }
-    }
-
-    pub fn error<T: Display>(&self, msg: T) {
-        self.errors
-            .borrow_mut()
-            .as_mut()
-            .unwrap()
-            .push(msg.to_string());
-    }
-
-    pub fn check(self) -> Result<(), String> {
-        let mut errors = self.errors.borrow_mut().take().unwrap();
-        match errors.len() {
-            0 => Ok(()),
-            1 => Err(errors.pop().unwrap()),
-            n => {
-                let mut msg = format!("{} errors:", n);
-                for err in errors {
-                    msg.push_str("\n\t# ");
-                    msg.push_str(&err);
-                }
-                Err(msg)
-            }
-        }
-    }
-}
-
-impl Drop for Ctxt {
-    fn drop(&mut self) {
-        if !thread::panicking() && self.errors.borrow().is_some() {
-            panic!("forgot to check for errors");
-        }
-    }
-}

serde_derive/src/internals/mod.rs

@@ -1,22 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-pub mod ast;
-pub mod attr;
-
-mod ctxt;
-pub use self::ctxt::Ctxt;
-
-mod case;
-mod check;
-
-#[derive(Copy, Clone)]
-pub enum Derive {
-    Serialize,
-    Deserialize,
-}

serde_derive/src/lib.rs

@@ -1,102 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! This crate provides Serde's two derive macros.
-//!
-//! ```rust
-//! # #[macro_use]
-//! # extern crate serde_derive;
-//! #
-//! #[derive(Serialize, Deserialize)]
-//! # struct S;
-//! #
-//! # fn main() {}
-//! ```
-//!
-//! Please refer to [https://serde.rs/derive.html] for how to set this up.
-//!
-//! [https://serde.rs/derive.html]: https://serde.rs/derive.html
-
-#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.77")]
-#![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
-// Whitelisted clippy lints
-#![cfg_attr(
-    feature = "cargo-clippy",
-    allow(
-        enum_variant_names,
-        redundant_field_names,
-        too_many_arguments,
-        used_underscore_binding,
-        cyclomatic_complexity,
-        needless_pass_by_value
-    )
-)]
-// Whitelisted clippy_pedantic lints
-#![cfg_attr(
-    feature = "cargo-clippy",
-    allow(
-        items_after_statements,
-        doc_markdown,
-        stutter,
-        similar_names,
-        use_self,
-        single_match_else,
-        enum_glob_use,
-        match_same_arms,
-        filter_map,
-        cast_possible_truncation,
-        indexing_slicing,
-    )
-)]
-// The `quote!` macro requires deep recursion.
-#![recursion_limit = "512"]
-
-#[macro_use]
-extern crate quote;
-#[macro_use]
-extern crate syn;
-
-extern crate proc_macro;
-extern crate proc_macro2;
-
-mod internals;
-
-use proc_macro::TokenStream;
-use syn::DeriveInput;
-
-#[macro_use]
-mod bound;
-#[macro_use]
-mod fragment;
-
-mod de;
-mod pretend;
-mod ser;
-mod try;
-
-#[proc_macro_derive(Serialize, attributes(serde))]
-pub fn derive_serialize(input: TokenStream) -> TokenStream {
-    let input = parse_macro_input!(input as DeriveInput);
-    ser::expand_derive_serialize(&input)
-        .unwrap_or_else(compile_error)
-        .into()
-}
-
-#[proc_macro_derive(Deserialize, attributes(serde))]
-pub fn derive_deserialize(input: TokenStream) -> TokenStream {
-    let input = parse_macro_input!(input as DeriveInput);
-    de::expand_derive_deserialize(&input)
-        .unwrap_or_else(compile_error)
-        .into()
-}
-
-fn compile_error(message: String) -> proc_macro2::TokenStream {
-    quote! {
-        compile_error!(#message);
-    }
-}

serde_derive/src/pretend.rs

@@ -1,139 +0,0 @@
-use proc_macro2::{Span, TokenStream};
-use syn::Ident;
-
-use internals::ast::{Container, Data, Field, Style};
-
-// Suppress dead_code warnings that would otherwise appear when using a remote
-// derive. Other than this pretend code, a struct annotated with remote derive
-// never has its fields referenced and an enum annotated with remote derive
-// never has its variants constructed.
-//
-//     warning: field is never used: `i`
-//      --> src/main.rs:4:20
-//       |
-//     4 | struct StructDef { i: i32 }
-//       |                    ^^^^^^
-//
-//     warning: variant is never constructed: `V`
-//      --> src/main.rs:8:16
-//       |
-//     8 | enum EnumDef { V }
-//       |                ^
-//
-pub fn pretend_used(cont: &Container) -> TokenStream {
-    let pretend_fields = pretend_fields_used(cont);
-    let pretend_variants = pretend_variants_used(cont);
-
-    quote! {
-        #pretend_fields
-        #pretend_variants
-    }
-}
-
-// For structs with named fields, expands to:
-//
-//     match None::<T> {
-//         Some(T { a: ref __v0, b: ref __v1 }) => {}
-//         _ => {}
-//     }
-//
-// For enums, expands to the following but only including struct variants:
-//
-//     match None::<T> {
-//         Some(T::A { a: ref __v0 }) => {}
-//         Some(T::B { b: ref __v0 }) => {}
-//         _ => {}
-//     }
-//
-// The `ref` is important in case the user has written a Drop impl on their
-// type. Rust does not allow destructuring a struct or enum that has a Drop
-// impl.
-fn pretend_fields_used(cont: &Container) -> TokenStream {
-    let type_ident = &cont.ident;
-    let (_, ty_generics, _) = cont.generics.split_for_impl();
-
-    let patterns = match cont.data {
-        Data::Enum(ref variants) => variants
-            .iter()
-            .filter_map(|variant| match variant.style {
-                Style::Struct => {
-                    let variant_ident = &variant.ident;
-                    let pat = struct_pattern(&variant.fields);
-                    Some(quote!(#type_ident::#variant_ident #pat))
-                }
-                _ => None,
-            }).collect::<Vec<_>>(),
-        Data::Struct(Style::Struct, ref fields) => {
-            let pat = struct_pattern(fields);
-            vec![quote!(#type_ident #pat)]
-        }
-        Data::Struct(_, _) => {
-            return quote!();
-        }
-    };
-
-    quote! {
-        match _serde::export::None::<#type_ident #ty_generics> {
-            #(
-                _serde::export::Some(#patterns) => {}
-            )*
-            _ => {}
-        }
-    }
-}
-
-// Expands to one of these per enum variant:
-//
-//     match None {
-//         Some((__v0, __v1,)) => {
-//             let _ = E::V { a: __v0, b: __v1 };
-//         }
-//         _ => {}
-//     }
-//
-fn pretend_variants_used(cont: &Container) -> TokenStream {
-    let variants = match cont.data {
-        Data::Enum(ref variants) => variants,
-        Data::Struct(_, _) => {
-            return quote!();
-        }
-    };
-
-    let type_ident = &cont.ident;
-    let (_, ty_generics, _) = cont.generics.split_for_impl();
-    let turbofish = ty_generics.as_turbofish();
-
-    let cases = variants.iter().map(|variant| {
-        let variant_ident = &variant.ident;
-        let placeholders = &(0..variant.fields.len())
-            .map(|i| Ident::new(&format!("__v{}", i), Span::call_site()))
-            .collect::<Vec<_>>();
-
-        let pat = match variant.style {
-            Style::Struct => {
-                let members = variant.fields.iter().map(|field| &field.member);
-                quote!({ #(#members: #placeholders),* })
-            }
-            Style::Tuple | Style::Newtype => quote!(( #(#placeholders),* )),
-            Style::Unit => quote!(),
-        };
-
-        quote! {
-            match _serde::export::None {
-                _serde::export::Some((#(#placeholders,)*)) => {
-                    let _ = #type_ident::#variant_ident #turbofish #pat;
-                }
-                _ => {}
-            }
-        }
-    });
-
-    quote!(#(#cases)*)
-}
-
-fn struct_pattern(fields: &[Field]) -> TokenStream {
-    let members = fields.iter().map(|field| &field.member);
-    let placeholders =
-        (0..fields.len()).map(|i| Ident::new(&format!("__v{}", i), Span::call_site()));
-    quote!({ #(#members: ref #placeholders),* })
-}

serde_derive/src/try.rs

@@ -1,24 +0,0 @@
-use proc_macro2::{Punct, Spacing, TokenStream};
-
-// None of our generated code requires the `From::from` error conversion
-// performed by the standard library's `try!` macro. With this simplified macro
-// we see a significant improvement in type checking and borrow checking time of
-// the generated code and a slight improvement in binary size.
-pub fn replacement() -> TokenStream {
-    // Cannot pass `$expr` to `quote!` prior to Rust 1.17.0 so interpolate it.
-    let dollar = Punct::new('$', Spacing::Alone);
-
-    quote! {
-        #[allow(unused_macros)]
-        macro_rules! try {
-            (#dollar __expr:expr) => {
-                match #dollar __expr {
-                    _serde::export::Ok(__val) => __val,
-                    _serde::export::Err(__err) => {
-                        return _serde::export::Err(__err);
-                    }
-                }
-            }
-        }
-    }
-}

serde_derive_internals/Cargo.toml

@@ -1,23 +0,0 @@
-[package]
-name = "serde_derive_internals"
-version = "0.23.1" # remember to update html_root_url
-authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
-license = "MIT/Apache-2.0"
-description = "AST representation used by Serde derive macros. Unstable."
-homepage = "https://serde.rs"
-repository = "https://github.com/serde-rs/serde"
-documentation = "https://docs.serde.rs/serde_derive_internals/"
-keywords = ["serde", "serialization"]
-readme = "crates-io.md"
-include = ["Cargo.toml", "lib.rs", "src/**/*.rs", "crates-io.md", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
-
-[lib]
-path = "lib.rs"
-
-[dependencies]
-proc-macro2 = "0.4"
-syn = { version = "0.15", default-features = false, features = ["derive", "parsing", "clone-impls"] }
-
-[badges]
-travis-ci = { repository = "serde-rs/serde" }
-appveyor = { repository = "serde-rs/serde" }

serde_derive_internals/LICENSE-APACHE

@@ -1 +0,0 @@
-../LICENSE-APACHE

serde_derive_internals/LICENSE-MIT

@@ -1 +0,0 @@
-../LICENSE-MIT

serde_derive_internals/README.md

@@ -1 +0,0 @@
-../README.md

serde_derive_internals/crates-io.md

@@ -1 +0,0 @@
-../crates-io.md

serde_derive_internals/lib.rs

@@ -1,28 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![doc(html_root_url = "https://docs.rs/serde_derive_internals/0.23.1")]
-#![cfg_attr(
-    feature = "cargo-clippy",
-    allow(
-        cyclomatic_complexity,
-        doc_markdown,
-        match_same_arms,
-        redundant_field_names
-    )
-)]
-
-#[macro_use]
-extern crate syn;
-
-extern crate proc_macro2;
-
-#[path = "src/mod.rs"]
-mod internals;
-
-pub use internals::*;

serde_derive_internals/src

@@ -1 +0,0 @@
-../serde_derive/src/internals/

serde_macros/.gitignore

@@ -0,0 +1,2 @@
+/target
+/Cargo.lock

serde_macros/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "serde_macros"
+version = "0.4.2"
+authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
+license = "MIT/Apache-2.0"
+description = "Macros to auto-generate implementations for the serde framework"
+repository = "https://github.com/erickt/rust-serde"
+
+[lib]
+name = "serde_macros"
+plugin = true
+
+[dependencies]
+serde_codegen = { version = "*", path = "../serde_codegen", default-features = false, features = ["nightly"] }
+
+[dev-dependencies]
+num = "*"
+rustc-serialize = "*"
+serde = { version = "*", path = "../serde" }

serde_macros/benches/bench.rs

@@ -0,0 +1,9 @@
+#![feature(custom_attribute, custom_derive, plugin, test)]
+#![plugin(serde_macros)]
+
+extern crate num;
+extern crate rustc_serialize;
+extern crate serde;
+extern crate test;
+
+include!("../../serde_tests/benches/bench.rs.in");

serde_macros/examples/json.rs

@@ -0,0 +1,64 @@
+#![feature(custom_derive, plugin)]
+#![plugin(serde_macros)]
+
+extern crate serde;
+
+use std::collections::BTreeMap;
+use serde::json;
+
+// Creating serializable types with serde is quite simple with `serde_macros`. It implements a
+// syntax extension that automatically generates the necessary serde trait implementations.
+#[derive(Debug, Serialize, Deserialize)]
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+fn main() {
+    let point = Point { x: 5, y: 6 };
+
+    // Serializing to JSON is pretty simple by using the `to_string` method:
+    let serialized_point = json::to_string(&point).unwrap();
+
+    println!("{}", serialized_point);
+    // prints:
+    //
+    // {"x":5,"y":6}
+
+    // There is also support for pretty printing using `to_string_pretty`:
+    let serialized_point = json::to_string_pretty(&point).unwrap();
+
+    println!("{}", serialized_point);
+    // prints:
+    //
+    // {
+    //   "x":5,
+    //   "y":6
+    // }
+
+    // Values can also be deserialized with the same style using `from_str`:
+    let deserialized_point: Point = json::from_str(&serialized_point).unwrap();
+
+    println!("{:?}", deserialized_point);
+    // prints:
+    //
+    // Point { x: 5, y: 6 }
+
+    // `Point`s aren't the only type that can be serialized to. Because `Point` members have the
+    // same type, they can be also serialized into a map. Also, 
+    let deserialized_map: BTreeMap<String, i64> = json::from_str(&serialized_point).unwrap();
+
+    println!("{:?}", deserialized_map);
+    // prints:
+    //
+    // {"x": 5, "y": 6}
+
+    // If you need to accept arbitrary data, you can also deserialize into `json::Value`, which
+    // can represent all JSON values.
+    let deserialized_value: json::Value = json::from_str(&serialized_point).unwrap();
+
+    println!("{:?}", deserialized_value);
+    // prints:
+    //
+    // {"x":5,"y":6}
+}

serde_macros/src/lib.rs

@@ -0,0 +1,10 @@
+#![feature(plugin_registrar, rustc_private)]
+
+extern crate serde_codegen;
+extern crate rustc;
+
+#[plugin_registrar]
+#[doc(hidden)]
+pub fn plugin_registrar(reg: &mut rustc::plugin::Registry) {
+    serde_codegen::register(reg);
+}

serde_macros/tests/test.rs

@@ -0,0 +1,7 @@
+#![feature(test, custom_attribute, custom_derive, plugin)]
+#![plugin(serde_macros)]
+
+extern crate serde;
+extern crate test;
+
+include!("../../serde_tests/tests/test.rs.in");

serde_test/Cargo.toml

@@ -1,23 +0,0 @@
-[package]
-name = "serde_test"
-version = "1.0.77" # remember to update html_root_url
-authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
-license = "MIT/Apache-2.0"
-description = "Token De/Serializer for testing De/Serialize implementations"
-homepage = "https://serde.rs"
-repository = "https://github.com/serde-rs/serde"
-documentation = "https://docs.serde.rs/serde_test/"
-keywords = ["serde", "serialization"]
-readme = "crates-io.md"
-include = ["Cargo.toml", "src/**/*.rs", "crates-io.md", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
-
-[dependencies]
-serde = { version = "1.0.60", path = "../serde" }
-
-[dev-dependencies]
-serde = { version = "1.0", path = "../serde", features = ["rc"] }
-serde_derive = { version = "1.0", path = "../serde_derive" }
-
-[badges]
-travis-ci = { repository = "serde-rs/serde" }
-appveyor = { repository = "serde-rs/serde" }

serde_test/LICENSE-APACHE

@@ -1 +0,0 @@
-../LICENSE-APACHE

serde_test/LICENSE-MIT

@@ -1 +0,0 @@
-../LICENSE-MIT

serde_test/README.md

@@ -1 +0,0 @@
-../README.md

serde_test/crates-io.md

@@ -1 +0,0 @@
-../crates-io.md

serde_test/src/assert.rs

@@ -1,258 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use serde::{Deserialize, Serialize};
-
-use de::Deserializer;
-use ser::Serializer;
-use token::Token;
-
-use std::fmt::Debug;
-
-/// Runs both `assert_ser_tokens` and `assert_de_tokens`.
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde_derive;
-/// #
-/// # extern crate serde;
-/// # extern crate serde_test;
-/// #
-/// # use serde_test::{assert_tokens, Token};
-/// #
-/// # fn main() {
-/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-/// struct S {
-///     a: u8,
-///     b: u8,
-/// }
-///
-/// let s = S { a: 0, b: 0 };
-/// assert_tokens(&s, &[
-///     Token::Struct { name: "S", len: 2 },
-///     Token::Str("a"),
-///     Token::U8(0),
-///     Token::Str("b"),
-///     Token::U8(0),
-///     Token::StructEnd,
-/// ]);
-/// # }
-/// ```
-pub fn assert_tokens<'de, T>(value: &T, tokens: &'de [Token])
-where
-    T: Serialize + Deserialize<'de> + PartialEq + Debug,
-{
-    assert_ser_tokens(value, tokens);
-    assert_de_tokens(value, tokens);
-}
-
-/// Asserts that `value` serializes to the given `tokens`.
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde_derive;
-/// #
-/// # extern crate serde;
-/// # extern crate serde_test;
-/// #
-/// # use serde_test::{assert_ser_tokens, Token};
-/// #
-/// # fn main() {
-/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-/// struct S {
-///     a: u8,
-///     b: u8,
-/// }
-///
-/// let s = S { a: 0, b: 0 };
-/// assert_ser_tokens(&s, &[
-///     Token::Struct { name: "S", len: 2 },
-///     Token::Str("a"),
-///     Token::U8(0),
-///     Token::Str("b"),
-///     Token::U8(0),
-///     Token::StructEnd,
-/// ]);
-/// # }
-/// ```
-pub fn assert_ser_tokens<T>(value: &T, tokens: &[Token])
-where
-    T: Serialize,
-{
-    let mut ser = Serializer::new(tokens);
-    match value.serialize(&mut ser) {
-        Ok(_) => {}
-        Err(err) => panic!("value failed to serialize: {}", err),
-    }
-
-    if ser.remaining() > 0 {
-        panic!("{} remaining tokens", ser.remaining());
-    }
-}
-
-/// Asserts that `value` serializes to the given `tokens`, and then yields
-/// `error`.
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde_derive;
-/// #
-/// # extern crate serde_test;
-/// #
-/// # fn main() {
-/// use std::sync::{Arc, Mutex};
-/// use std::thread;
-///
-/// use serde_test::{assert_ser_tokens_error, Token};
-///
-/// #[derive(Serialize)]
-/// struct Example {
-///     lock: Arc<Mutex<u32>>,
-/// }
-///
-/// let example = Example { lock: Arc::new(Mutex::new(0)) };
-/// let lock = example.lock.clone();
-///
-/// let _ = thread::spawn(move || {
-///     // This thread will acquire the mutex first, unwrapping the result
-///     // of `lock` because the lock has not been poisoned.
-///     let _guard = lock.lock().unwrap();
-///
-///     // This panic while holding the lock (`_guard` is in scope) will
-///     // poison the mutex.
-///     panic!()
-/// }).join();
-///
-/// let expected = &[
-///     Token::Struct { name: "Example", len: 1 },
-///     Token::Str("lock"),
-/// ];
-/// let error = "lock poison error while serializing";
-/// assert_ser_tokens_error(&example, expected, error);
-/// # }
-/// ```
-pub fn assert_ser_tokens_error<T>(value: &T, tokens: &[Token], error: &str)
-where
-    T: Serialize,
-{
-    let mut ser = Serializer::new(tokens);
-    match value.serialize(&mut ser) {
-        Ok(_) => panic!("value serialized successfully"),
-        Err(e) => assert_eq!(e, *error),
-    }
-
-    if ser.remaining() > 0 {
-        panic!("{} remaining tokens", ser.remaining());
-    }
-}
-
-/// Asserts that the given `tokens` deserialize into `value`.
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde_derive;
-/// #
-/// # extern crate serde;
-/// # extern crate serde_test;
-/// #
-/// # use serde_test::{assert_de_tokens, Token};
-/// #
-/// # fn main() {
-/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-/// struct S {
-///     a: u8,
-///     b: u8,
-/// }
-///
-/// let s = S { a: 0, b: 0 };
-/// assert_de_tokens(&s, &[
-///     Token::Struct { name: "S", len: 2 },
-///     Token::Str("a"),
-///     Token::U8(0),
-///     Token::Str("b"),
-///     Token::U8(0),
-///     Token::StructEnd,
-/// ]);
-/// # }
-/// ```
-pub fn assert_de_tokens<'de, T>(value: &T, tokens: &'de [Token])
-where
-    T: Deserialize<'de> + PartialEq + Debug,
-{
-    let mut de = Deserializer::new(tokens);
-    let mut deserialized_val = match T::deserialize(&mut de) {
-        Ok(v) => {
-            assert_eq!(v, *value);
-            v
-        }
-        Err(e) => panic!("tokens failed to deserialize: {}", e),
-    };
-    if de.remaining() > 0 {
-        panic!("{} remaining tokens", de.remaining());
-    }
-
-    // Do the same thing for deserialize_in_place. This isn't *great* because a
-    // no-op impl of deserialize_in_place can technically succeed here. Still,
-    // this should catch a lot of junk.
-    let mut de = Deserializer::new(tokens);
-    match T::deserialize_in_place(&mut de, &mut deserialized_val) {
-        Ok(()) => {
-            assert_eq!(deserialized_val, *value);
-        }
-        Err(e) => panic!("tokens failed to deserialize_in_place: {}", e),
-    }
-    if de.remaining() > 0 {
-        panic!("{} remaining tokens", de.remaining());
-    }
-}
-
-/// Asserts that the given `tokens` yield `error` when deserializing.
-///
-/// ```rust
-/// # #[macro_use]
-/// # extern crate serde_derive;
-/// #
-/// # extern crate serde;
-/// # extern crate serde_test;
-/// #
-/// # use serde_test::{assert_de_tokens_error, Token};
-/// #
-/// # fn main() {
-/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-/// #[serde(deny_unknown_fields)]
-/// struct S {
-///     a: u8,
-///     b: u8,
-/// }
-///
-/// assert_de_tokens_error::<S>(
-///     &[
-///         Token::Struct { name: "S", len: 2 },
-///         Token::Str("x"),
-///     ],
-///     "unknown field `x`, expected `a` or `b`",
-/// );
-/// # }
-/// ```
-pub fn assert_de_tokens_error<'de, T>(tokens: &'de [Token], error: &str)
-where
-    T: Deserialize<'de>,
-{
-    let mut de = Deserializer::new(tokens);
-    match T::deserialize(&mut de) {
-        Ok(_) => panic!("tokens deserialized successfully"),
-        Err(e) => assert_eq!(e, *error),
-    }
-
-    // There may be one token left if a peek caused the error
-    de.next_token_opt();
-
-    if de.remaining() > 0 {
-        panic!("{} remaining tokens", de.remaining());
-    }
-}

serde_test/src/configure.rs

@@ -1,839 +0,0 @@
-use std::fmt;
-
-use serde::ser::{
-    SerializeMap, SerializeSeq, SerializeStruct, SerializeStructVariant, SerializeTuple,
-    SerializeTupleStruct, SerializeTupleVariant,
-};
-use serde::{Deserialize, Deserializer, Serialize, Serializer};
-
-#[derive(Debug, PartialEq, Eq, PartialOrd, Ord)]
-pub struct Readable<T: ?Sized>(T);
-#[derive(Debug, PartialEq, Eq, PartialOrd, Ord)]
-pub struct Compact<T: ?Sized>(T);
-
-/// Trait to determine whether a value is represented in human-readable or
-/// compact form.
-///
-/// ```
-/// extern crate serde;
-/// extern crate serde_test;
-///
-/// use serde::{Deserialize, Deserializer, Serialize, Serializer};
-/// use serde_test::{assert_tokens, Configure, Token};
-///
-/// #[derive(Debug, PartialEq)]
-/// struct Example(u8, u8);
-///
-/// impl Serialize for Example {
-///     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-///     where
-///         S: Serializer,
-///     {
-///         if serializer.is_human_readable() {
-///             format!("{}.{}", self.0, self.1).serialize(serializer)
-///         } else {
-///             (self.0, self.1).serialize(serializer)
-///         }
-///     }
-/// }
-///
-/// impl<'de> Deserialize<'de> for Example {
-///     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-///     where
-///         D: Deserializer<'de>,
-///     {
-///         use serde::de::Error;
-///         if deserializer.is_human_readable() {
-///             let s = String::deserialize(deserializer)?;
-///             let parts: Vec<_> = s.split('.').collect();
-///             Ok(Example(
-///                 parts[0].parse().map_err(D::Error::custom)?,
-///                 parts[1].parse().map_err(D::Error::custom)?,
-///             ))
-///         } else {
-///             let (x, y) = Deserialize::deserialize(deserializer)?;
-///             Ok(Example(x, y))
-///         }
-///     }
-/// }
-///
-/// fn main() {
-///     assert_tokens(
-///         &Example(1, 0).compact(),
-///         &[
-///             Token::Tuple { len: 2 },
-///             Token::U8(1),
-///             Token::U8(0),
-///             Token::TupleEnd,
-///         ],
-///     );
-///     assert_tokens(&Example(1, 0).readable(), &[Token::Str("1.0")]);
-/// }
-/// ```
-pub trait Configure {
-    /// Marks `self` as using `is_human_readable == true`
-    fn readable(self) -> Readable<Self>
-    where
-        Self: Sized,
-    {
-        Readable(self)
-    }
-    /// Marks `self` as using `is_human_readable == false`
-    fn compact(self) -> Compact<Self>
-    where
-        Self: Sized,
-    {
-        Compact(self)
-    }
-}
-
-impl<T: ?Sized> Configure for T {}
-
-impl<T: ?Sized> Serialize for Readable<T>
-where
-    T: Serialize,
-{
-    #[inline]
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        self.0.serialize(Readable(serializer))
-    }
-}
-impl<T: ?Sized> Serialize for Compact<T>
-where
-    T: Serialize,
-{
-    #[inline]
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        self.0.serialize(Compact(serializer))
-    }
-}
-impl<'de, T> Deserialize<'de> for Readable<T>
-where
-    T: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        T::deserialize(Readable(deserializer)).map(Readable)
-    }
-}
-impl<'de, T> Deserialize<'de> for Compact<T>
-where
-    T: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        T::deserialize(Compact(deserializer)).map(Compact)
-    }
-}
-
-impl<'de, T> DeserializeSeed<'de> for Readable<T>
-where
-    T: DeserializeSeed<'de>,
-{
-    type Value = T::Value;
-
-    fn deserialize<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        self.0.deserialize(Readable(deserializer))
-    }
-}
-impl<'de, T> DeserializeSeed<'de> for Compact<T>
-where
-    T: DeserializeSeed<'de>,
-{
-    type Value = T::Value;
-
-    fn deserialize<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        self.0.deserialize(Compact(deserializer))
-    }
-}
-
-macro_rules! forward_method {
-    ($name: ident (self $(, $arg: ident : $arg_type: ty)* ) -> $return_type: ty) => {
-        fn $name (self $(, $arg : $arg_type)* ) -> $return_type {
-            (self.0).$name( $($arg),* )
-        }
-    };
-}
-
-macro_rules! forward_serialize_methods {
-    ( $( $name: ident $arg_type: ty ),* ) => {
-        $(
-            forward_method!($name(self, v : $arg_type) -> Result<Self::Ok, Self::Error>);
-        )*
-    };
-}
-
-macro_rules! impl_serializer {
-    ($wrapper:ident, $is_human_readable:expr) => {
-        impl<S> Serializer for $wrapper<S>
-        where
-            S: Serializer,
-        {
-            type Ok = S::Ok;
-            type Error = S::Error;
-
-            type SerializeSeq = $wrapper<S::SerializeSeq>;
-            type SerializeTuple = $wrapper<S::SerializeTuple>;
-            type SerializeTupleStruct = $wrapper<S::SerializeTupleStruct>;
-            type SerializeTupleVariant = $wrapper<S::SerializeTupleVariant>;
-            type SerializeMap = $wrapper<S::SerializeMap>;
-            type SerializeStruct = $wrapper<S::SerializeStruct>;
-            type SerializeStructVariant = $wrapper<S::SerializeStructVariant>;
-
-            fn is_human_readable(&self) -> bool {
-                $is_human_readable
-            }
-
-            forward_serialize_methods!{
-                serialize_bool bool,
-                serialize_i8 i8,
-                serialize_i16 i16,
-                serialize_i32 i32,
-                serialize_i64 i64,
-                serialize_u8 u8,
-                serialize_u16 u16,
-                serialize_u32 u32,
-                serialize_u64 u64,
-                serialize_f32 f32,
-                serialize_f64 f64,
-                serialize_char char,
-                serialize_str &str,
-                serialize_bytes &[u8],
-                serialize_unit_struct &'static str
-
-            }
-
-            fn serialize_unit(self) -> Result<S::Ok, S::Error> {
-                self.0.serialize_unit()
-            }
-
-            fn serialize_unit_variant(
-                self,
-                name: &'static str,
-                variant_index: u32,
-                variant: &'static str,
-            ) -> Result<S::Ok, S::Error> {
-                self.0.serialize_unit_variant(name, variant_index, variant)
-            }
-
-            fn serialize_newtype_struct<T: ?Sized>(
-                self,
-                name: &'static str,
-                value: &T,
-            ) -> Result<S::Ok, S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_newtype_struct(name, &$wrapper(value))
-            }
-
-            fn serialize_newtype_variant<T: ?Sized>(
-                self,
-                name: &'static str,
-                variant_index: u32,
-                variant: &'static str,
-                value: &T,
-            ) -> Result<S::Ok, S::Error>
-            where
-                T: Serialize,
-            {
-                self.0
-                    .serialize_newtype_variant(name, variant_index, variant, &$wrapper(value))
-            }
-
-            fn serialize_none(self) -> Result<S::Ok, Self::Error> {
-                self.0.serialize_none()
-            }
-
-            fn serialize_some<T: ?Sized>(self, value: &T) -> Result<S::Ok, Self::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_some(&$wrapper(value))
-            }
-
-            fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
-                self.0.serialize_seq(len).map($wrapper)
-            }
-
-            fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
-                self.0.serialize_tuple(len).map($wrapper)
-            }
-
-            fn serialize_tuple_struct(
-                self,
-                name: &'static str,
-                len: usize,
-            ) -> Result<Self::SerializeTupleStruct, Self::Error> {
-                self.0.serialize_tuple_struct(name, len).map($wrapper)
-            }
-
-            fn serialize_tuple_variant(
-                self,
-                name: &'static str,
-                variant_index: u32,
-                variant: &'static str,
-                len: usize,
-            ) -> Result<Self::SerializeTupleVariant, Self::Error> {
-                self.0
-                    .serialize_tuple_variant(name, variant_index, variant, len)
-                    .map($wrapper)
-            }
-
-            fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
-                self.0.serialize_map(len).map($wrapper)
-            }
-
-            fn serialize_struct(
-                self,
-                name: &'static str,
-                len: usize,
-            ) -> Result<Self::SerializeStruct, Self::Error> {
-                self.0.serialize_struct(name, len).map($wrapper)
-            }
-
-            fn serialize_struct_variant(
-                self,
-                name: &'static str,
-                variant_index: u32,
-                variant: &'static str,
-                len: usize,
-            ) -> Result<Self::SerializeStructVariant, Self::Error> {
-                self.0
-                    .serialize_struct_variant(name, variant_index, variant, len)
-                    .map($wrapper)
-            }
-        }
-
-        impl<S> SerializeSeq for $wrapper<S>
-        where
-            S: SerializeSeq,
-        {
-            type Ok = S::Ok;
-            type Error = S::Error;
-            fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_element(&$wrapper(value))
-            }
-            fn end(self) -> Result<S::Ok, S::Error> {
-                self.0.end()
-            }
-        }
-
-        impl<S> SerializeTuple for $wrapper<S>
-        where
-            S: SerializeTuple,
-        {
-            type Ok = S::Ok;
-            type Error = S::Error;
-            fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_element(&$wrapper(value))
-            }
-            fn end(self) -> Result<S::Ok, S::Error> {
-                self.0.end()
-            }
-        }
-
-        impl<S> SerializeTupleStruct for $wrapper<S>
-        where
-            S: SerializeTupleStruct,
-        {
-            type Ok = S::Ok;
-            type Error = S::Error;
-            fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_field(&$wrapper(value))
-            }
-            fn end(self) -> Result<S::Ok, S::Error> {
-                self.0.end()
-            }
-        }
-
-        impl<S> SerializeTupleVariant for $wrapper<S>
-        where
-            S: SerializeTupleVariant,
-        {
-            type Ok = S::Ok;
-            type Error = S::Error;
-            fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_field(&$wrapper(value))
-            }
-            fn end(self) -> Result<S::Ok, S::Error> {
-                self.0.end()
-            }
-        }
-
-        impl<S> SerializeMap for $wrapper<S>
-        where
-            S: SerializeMap,
-        {
-            type Ok = S::Ok;
-            type Error = S::Error;
-            fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_key(&$wrapper(key))
-            }
-            fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_value(&$wrapper(value))
-            }
-            fn serialize_entry<K: ?Sized, V: ?Sized>(
-                &mut self,
-                key: &K,
-                value: &V,
-            ) -> Result<(), S::Error>
-            where
-                K: Serialize,
-                V: Serialize,
-            {
-                self.0.serialize_entry(key, &$wrapper(value))
-            }
-            fn end(self) -> Result<S::Ok, S::Error> {
-                self.0.end()
-            }
-        }
-
-        impl<S> SerializeStruct for $wrapper<S>
-        where
-            S: SerializeStruct,
-        {
-            type Ok = S::Ok;
-            type Error = S::Error;
-            fn serialize_field<T: ?Sized>(
-                &mut self,
-                name: &'static str,
-                field: &T,
-            ) -> Result<(), S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_field(name, &$wrapper(field))
-            }
-            fn end(self) -> Result<S::Ok, S::Error> {
-                self.0.end()
-            }
-        }
-
-        impl<S> SerializeStructVariant for $wrapper<S>
-        where
-            S: SerializeStructVariant,
-        {
-            type Ok = S::Ok;
-            type Error = S::Error;
-            fn serialize_field<T: ?Sized>(
-                &mut self,
-                name: &'static str,
-                field: &T,
-            ) -> Result<(), S::Error>
-            where
-                T: Serialize,
-            {
-                self.0.serialize_field(name, &$wrapper(field))
-            }
-            fn end(self) -> Result<S::Ok, S::Error> {
-                self.0.end()
-            }
-        }
-    };
-}
-
-impl_serializer!(Readable, true);
-impl_serializer!(Compact, false);
-
-use serde::de::{DeserializeSeed, EnumAccess, Error, MapAccess, SeqAccess, VariantAccess, Visitor};
-
-macro_rules! forward_deserialize_methods {
-    ( $wrapper : ident ( $( $name: ident ),* ) ) => {
-        $(
-            fn $name<V>(self, visitor: V) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                (self.0).$name($wrapper(visitor))
-            }
-        )*
-    };
-}
-
-macro_rules! impl_deserializer {
-    ($wrapper:ident, $is_human_readable:expr) => {
-        impl<'de, D> Deserializer<'de> for $wrapper<D>
-        where
-            D: Deserializer<'de>,
-        {
-            type Error = D::Error;
-
-            forward_deserialize_methods! {
-                $wrapper (
-                    deserialize_any,
-                    deserialize_bool,
-                    deserialize_u8,
-                    deserialize_u16,
-                    deserialize_u32,
-                    deserialize_u64,
-                    deserialize_i8,
-                    deserialize_i16,
-                    deserialize_i32,
-                    deserialize_i64,
-                    deserialize_f32,
-                    deserialize_f64,
-                    deserialize_char,
-                    deserialize_str,
-                    deserialize_string,
-                    deserialize_bytes,
-                    deserialize_byte_buf,
-                    deserialize_option,
-                    deserialize_unit,
-                    deserialize_seq,
-                    deserialize_map,
-                    deserialize_identifier,
-                    deserialize_ignored_any
-                )
-            }
-
-            fn deserialize_unit_struct<V>(
-                self,
-                name: &'static str,
-                visitor: V,
-            ) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                self.0.deserialize_unit_struct(name, $wrapper(visitor))
-            }
-            fn deserialize_newtype_struct<V>(
-                self,
-                name: &'static str,
-                visitor: V,
-            ) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                self.0.deserialize_newtype_struct(name, $wrapper(visitor))
-            }
-            fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                self.0.deserialize_tuple(len, $wrapper(visitor))
-            }
-            fn deserialize_tuple_struct<V>(
-                self,
-                name: &'static str,
-                len: usize,
-                visitor: V,
-            ) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                self.0
-                    .deserialize_tuple_struct(name, len, $wrapper(visitor))
-            }
-            fn deserialize_struct<V>(
-                self,
-                name: &'static str,
-                fields: &'static [&'static str],
-                visitor: V,
-            ) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                self.0.deserialize_struct(name, fields, $wrapper(visitor))
-            }
-            fn deserialize_enum<V>(
-                self,
-                name: &'static str,
-                variants: &'static [&'static str],
-                visitor: V,
-            ) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                self.0.deserialize_enum(name, variants, $wrapper(visitor))
-            }
-
-            fn is_human_readable(&self) -> bool {
-                $is_human_readable
-            }
-        }
-
-        impl<'de, D> Visitor<'de> for $wrapper<D>
-        where
-            D: Visitor<'de>,
-        {
-            type Value = D::Value;
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                self.0.expecting(formatter)
-            }
-            fn visit_bool<E>(self, v: bool) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_bool(v)
-            }
-            fn visit_i8<E>(self, v: i8) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_i8(v)
-            }
-            fn visit_i16<E>(self, v: i16) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_i16(v)
-            }
-            fn visit_i32<E>(self, v: i32) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_i32(v)
-            }
-            fn visit_i64<E>(self, v: i64) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_i64(v)
-            }
-            fn visit_u8<E>(self, v: u8) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_u8(v)
-            }
-            fn visit_u16<E>(self, v: u16) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_u16(v)
-            }
-            fn visit_u32<E>(self, v: u32) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_u32(v)
-            }
-            fn visit_u64<E>(self, v: u64) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_u64(v)
-            }
-            fn visit_f32<E>(self, v: f32) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_f32(v)
-            }
-            fn visit_f64<E>(self, v: f64) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_f64(v)
-            }
-            fn visit_char<E>(self, v: char) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_char(v)
-            }
-            fn visit_str<E>(self, v: &str) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_str(v)
-            }
-            fn visit_borrowed_str<E>(self, v: &'de str) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_borrowed_str(v)
-            }
-            fn visit_string<E>(self, v: String) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_string(v)
-            }
-            fn visit_bytes<E>(self, v: &[u8]) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_bytes(v)
-            }
-            fn visit_borrowed_bytes<E>(self, v: &'de [u8]) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_borrowed_bytes(v)
-            }
-            fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_byte_buf(v)
-            }
-            fn visit_none<E>(self) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_none()
-            }
-            fn visit_some<D2>(self, deserializer: D2) -> Result<Self::Value, D2::Error>
-            where
-                D2: Deserializer<'de>,
-            {
-                self.0.visit_some($wrapper(deserializer))
-            }
-            fn visit_unit<E>(self) -> Result<D::Value, E>
-            where
-                E: Error,
-            {
-                self.0.visit_unit()
-            }
-            fn visit_newtype_struct<D2>(self, deserializer: D2) -> Result<Self::Value, D2::Error>
-            where
-                D2: Deserializer<'de>,
-            {
-                self.0.visit_newtype_struct($wrapper(deserializer))
-            }
-            fn visit_seq<V>(self, seq: V) -> Result<D::Value, V::Error>
-            where
-                V: SeqAccess<'de>,
-            {
-                self.0.visit_seq($wrapper(seq))
-            }
-            fn visit_map<V>(self, map: V) -> Result<D::Value, V::Error>
-            where
-                V: MapAccess<'de>,
-            {
-                self.0.visit_map($wrapper(map))
-            }
-            fn visit_enum<V>(self, data: V) -> Result<D::Value, V::Error>
-            where
-                V: EnumAccess<'de>,
-            {
-                self.0.visit_enum($wrapper(data))
-            }
-        }
-
-        impl<'de, D> SeqAccess<'de> for $wrapper<D>
-        where
-            D: SeqAccess<'de>,
-        {
-            type Error = D::Error;
-            fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, D::Error>
-            where
-                T: DeserializeSeed<'de>,
-            {
-                self.0.next_element_seed($wrapper(seed))
-            }
-            fn size_hint(&self) -> Option<usize> {
-                self.0.size_hint()
-            }
-        }
-
-        impl<'de, D> MapAccess<'de> for $wrapper<D>
-        where
-            D: MapAccess<'de>,
-        {
-            type Error = D::Error;
-            fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, D::Error>
-            where
-                K: DeserializeSeed<'de>,
-            {
-                self.0.next_key_seed($wrapper(seed))
-            }
-            fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, D::Error>
-            where
-                V: DeserializeSeed<'de>,
-            {
-                self.0.next_value_seed($wrapper(seed))
-            }
-            fn size_hint(&self) -> Option<usize> {
-                self.0.size_hint()
-            }
-        }
-
-        impl<'de, D> EnumAccess<'de> for $wrapper<D>
-        where
-            D: EnumAccess<'de>,
-        {
-            type Error = D::Error;
-            type Variant = $wrapper<D::Variant>;
-            fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self::Variant), Self::Error>
-            where
-                V: DeserializeSeed<'de>,
-            {
-                self.0
-                    .variant_seed($wrapper(seed))
-                    .map(|(value, variant)| (value, $wrapper(variant)))
-            }
-        }
-
-        impl<'de, D> VariantAccess<'de> for $wrapper<D>
-        where
-            D: VariantAccess<'de>,
-        {
-            type Error = D::Error;
-            fn unit_variant(self) -> Result<(), D::Error> {
-                self.0.unit_variant()
-            }
-            fn newtype_variant_seed<T>(self, seed: T) -> Result<T::Value, D::Error>
-            where
-                T: DeserializeSeed<'de>,
-            {
-                self.0.newtype_variant_seed($wrapper(seed))
-            }
-            fn tuple_variant<V>(self, len: usize, visitor: V) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                self.0.tuple_variant(len, $wrapper(visitor))
-            }
-            fn struct_variant<V>(
-                self,
-                fields: &'static [&'static str],
-                visitor: V,
-            ) -> Result<V::Value, D::Error>
-            where
-                V: Visitor<'de>,
-            {
-                self.0.struct_variant(fields, $wrapper(visitor))
-            }
-        }
-    };
-}
-
-impl_deserializer!(Readable, true);
-impl_deserializer!(Compact, false);

serde_test/src/de.rs

@@ -1,665 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use serde::de::value::{MapAccessDeserializer, SeqAccessDeserializer};
-use serde::de::{
-    self, Deserialize, DeserializeSeed, EnumAccess, IntoDeserializer, MapAccess, SeqAccess,
-    VariantAccess, Visitor,
-};
-
-use error::Error;
-use token::Token;
-
-#[derive(Debug)]
-pub struct Deserializer<'de> {
-    tokens: &'de [Token],
-}
-
-macro_rules! assert_next_token {
-    ($de:expr, $expected:expr) => {
-        match $de.next_token_opt() {
-            Some(token) if token == $expected => {}
-            Some(other) => panic!(
-                "expected Token::{} but deserialization wants Token::{}",
-                other, $expected
-            ),
-            None => panic!(
-                "end of tokens but deserialization wants Token::{}",
-                $expected
-            ),
-        }
-    };
-}
-
-macro_rules! unexpected {
-    ($token:expr) => {
-        panic!("deserialization did not expect this token: {}", $token)
-    };
-}
-
-macro_rules! end_of_tokens {
-    () => {
-        panic!("ran out of tokens to deserialize")
-    };
-}
-
-impl<'de> Deserializer<'de> {
-    pub fn new(tokens: &'de [Token]) -> Self {
-        Deserializer { tokens: tokens }
-    }
-
-    fn peek_token_opt(&self) -> Option<Token> {
-        self.tokens.first().cloned()
-    }
-
-    fn peek_token(&self) -> Token {
-        match self.peek_token_opt() {
-            Some(token) => token,
-            None => end_of_tokens!(),
-        }
-    }
-
-    pub fn next_token_opt(&mut self) -> Option<Token> {
-        match self.tokens.split_first() {
-            Some((&first, rest)) => {
-                self.tokens = rest;
-                Some(first)
-            }
-            None => None,
-        }
-    }
-
-    fn next_token(&mut self) -> Token {
-        match self.tokens.split_first() {
-            Some((&first, rest)) => {
-                self.tokens = rest;
-                first
-            }
-            None => end_of_tokens!(),
-        }
-    }
-
-    pub fn remaining(&self) -> usize {
-        self.tokens.len()
-    }
-
-    fn visit_seq<V>(
-        &mut self,
-        len: Option<usize>,
-        end: Token,
-        visitor: V,
-    ) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        let value = try!(visitor.visit_seq(DeserializerSeqVisitor {
-            de: self,
-            len: len,
-            end: end,
-        },));
-        assert_next_token!(self, end);
-        Ok(value)
-    }
-
-    fn visit_map<V>(
-        &mut self,
-        len: Option<usize>,
-        end: Token,
-        visitor: V,
-    ) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        let value = try!(visitor.visit_map(DeserializerMapVisitor {
-            de: self,
-            len: len,
-            end: end,
-        },));
-        assert_next_token!(self, end);
-        Ok(value)
-    }
-}
-
-impl<'de, 'a> de::Deserializer<'de> for &'a mut Deserializer<'de> {
-    type Error = Error;
-
-    forward_to_deserialize_any! {
-        bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
-        bytes byte_buf unit seq map identifier ignored_any
-    }
-
-    fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        let token = self.next_token();
-        match token {
-            Token::Bool(v) => visitor.visit_bool(v),
-            Token::I8(v) => visitor.visit_i8(v),
-            Token::I16(v) => visitor.visit_i16(v),
-            Token::I32(v) => visitor.visit_i32(v),
-            Token::I64(v) => visitor.visit_i64(v),
-            Token::U8(v) => visitor.visit_u8(v),
-            Token::U16(v) => visitor.visit_u16(v),
-            Token::U32(v) => visitor.visit_u32(v),
-            Token::U64(v) => visitor.visit_u64(v),
-            Token::F32(v) => visitor.visit_f32(v),
-            Token::F64(v) => visitor.visit_f64(v),
-            Token::Char(v) => visitor.visit_char(v),
-            Token::Str(v) => visitor.visit_str(v),
-            Token::BorrowedStr(v) => visitor.visit_borrowed_str(v),
-            Token::String(v) => visitor.visit_string(v.to_owned()),
-            Token::Bytes(v) => visitor.visit_bytes(v),
-            Token::BorrowedBytes(v) => visitor.visit_borrowed_bytes(v),
-            Token::ByteBuf(v) => visitor.visit_byte_buf(v.to_vec()),
-            Token::None => visitor.visit_none(),
-            Token::Some => visitor.visit_some(self),
-            Token::Unit | Token::UnitStruct { .. } => visitor.visit_unit(),
-            Token::NewtypeStruct { .. } => visitor.visit_newtype_struct(self),
-            Token::Seq { len } => self.visit_seq(len, Token::SeqEnd, visitor),
-            Token::Tuple { len } => self.visit_seq(Some(len), Token::TupleEnd, visitor),
-            Token::TupleStruct { len, .. } => {
-                self.visit_seq(Some(len), Token::TupleStructEnd, visitor)
-            }
-            Token::Map { len } => self.visit_map(len, Token::MapEnd, visitor),
-            Token::Struct { len, .. } => self.visit_map(Some(len), Token::StructEnd, visitor),
-            Token::Enum { .. } => {
-                let variant = self.next_token();
-                let next = self.peek_token();
-                match (variant, next) {
-                    (Token::Str(variant), Token::Unit) => {
-                        self.next_token();
-                        visitor.visit_str(variant)
-                    }
-                    (Token::Bytes(variant), Token::Unit) => {
-                        self.next_token();
-                        visitor.visit_bytes(variant)
-                    }
-                    (Token::U32(variant), Token::Unit) => {
-                        self.next_token();
-                        visitor.visit_u32(variant)
-                    }
-                    (variant, Token::Unit) => unexpected!(variant),
-                    (variant, _) => {
-                        visitor.visit_map(EnumMapVisitor::new(self, variant, EnumFormat::Any))
-                    }
-                }
-            }
-            Token::UnitVariant { variant, .. } => visitor.visit_str(variant),
-            Token::NewtypeVariant { variant, .. } => visitor.visit_map(EnumMapVisitor::new(
-                self,
-                Token::Str(variant),
-                EnumFormat::Any,
-            )),
-            Token::TupleVariant { variant, .. } => visitor.visit_map(EnumMapVisitor::new(
-                self,
-                Token::Str(variant),
-                EnumFormat::Seq,
-            )),
-            Token::StructVariant { variant, .. } => visitor.visit_map(EnumMapVisitor::new(
-                self,
-                Token::Str(variant),
-                EnumFormat::Map,
-            )),
-            Token::SeqEnd
-            | Token::TupleEnd
-            | Token::TupleStructEnd
-            | Token::MapEnd
-            | Token::StructEnd
-            | Token::TupleVariantEnd
-            | Token::StructVariantEnd => {
-                unexpected!(token);
-            }
-        }
-    }
-
-    fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.peek_token() {
-            Token::Unit | Token::None => {
-                self.next_token();
-                visitor.visit_none()
-            }
-            Token::Some => {
-                self.next_token();
-                visitor.visit_some(self)
-            }
-            _ => self.deserialize_any(visitor),
-        }
-    }
-
-    fn deserialize_enum<V>(
-        self,
-        name: &'static str,
-        _variants: &'static [&'static str],
-        visitor: V,
-    ) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.peek_token() {
-            Token::Enum { name: n } if name == n => {
-                self.next_token();
-
-                visitor.visit_enum(DeserializerEnumVisitor { de: self })
-            }
-            Token::UnitVariant { name: n, .. }
-            | Token::NewtypeVariant { name: n, .. }
-            | Token::TupleVariant { name: n, .. }
-            | Token::StructVariant { name: n, .. }
-                if name == n =>
-            {
-                visitor.visit_enum(DeserializerEnumVisitor { de: self })
-            }
-            _ => {
-                unexpected!(self.next_token());
-            }
-        }
-    }
-
-    fn deserialize_unit_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.peek_token() {
-            Token::UnitStruct { .. } => {
-                assert_next_token!(self, Token::UnitStruct { name: name });
-                visitor.visit_unit()
-            }
-            _ => self.deserialize_any(visitor),
-        }
-    }
-
-    fn deserialize_newtype_struct<V>(
-        self,
-        name: &'static str,
-        visitor: V,
-    ) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.peek_token() {
-            Token::NewtypeStruct { .. } => {
-                assert_next_token!(self, Token::NewtypeStruct { name: name });
-                visitor.visit_newtype_struct(self)
-            }
-            _ => self.deserialize_any(visitor),
-        }
-    }
-
-    fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.peek_token() {
-            Token::Unit | Token::UnitStruct { .. } => {
-                self.next_token();
-                visitor.visit_unit()
-            }
-            Token::Seq { .. } => {
-                self.next_token();
-                self.visit_seq(Some(len), Token::SeqEnd, visitor)
-            }
-            Token::Tuple { .. } => {
-                self.next_token();
-                self.visit_seq(Some(len), Token::TupleEnd, visitor)
-            }
-            Token::TupleStruct { .. } => {
-                self.next_token();
-                self.visit_seq(Some(len), Token::TupleStructEnd, visitor)
-            }
-            _ => self.deserialize_any(visitor),
-        }
-    }
-
-    fn deserialize_tuple_struct<V>(
-        self,
-        name: &'static str,
-        len: usize,
-        visitor: V,
-    ) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.peek_token() {
-            Token::Unit => {
-                self.next_token();
-                visitor.visit_unit()
-            }
-            Token::UnitStruct { .. } => {
-                assert_next_token!(self, Token::UnitStruct { name: name });
-                visitor.visit_unit()
-            }
-            Token::Seq { .. } => {
-                self.next_token();
-                self.visit_seq(Some(len), Token::SeqEnd, visitor)
-            }
-            Token::Tuple { .. } => {
-                self.next_token();
-                self.visit_seq(Some(len), Token::TupleEnd, visitor)
-            }
-            Token::TupleStruct { len: n, .. } => {
-                assert_next_token!(self, Token::TupleStruct { name: name, len: n });
-                self.visit_seq(Some(len), Token::TupleStructEnd, visitor)
-            }
-            _ => self.deserialize_any(visitor),
-        }
-    }
-
-    fn deserialize_struct<V>(
-        self,
-        name: &'static str,
-        fields: &'static [&'static str],
-        visitor: V,
-    ) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.peek_token() {
-            Token::Struct { len: n, .. } => {
-                assert_next_token!(self, Token::Struct { name: name, len: n });
-                self.visit_map(Some(fields.len()), Token::StructEnd, visitor)
-            }
-            Token::Map { .. } => {
-                self.next_token();
-                self.visit_map(Some(fields.len()), Token::MapEnd, visitor)
-            }
-            _ => self.deserialize_any(visitor),
-        }
-    }
-
-    fn is_human_readable(&self) -> bool {
-        panic!(
-            "Types which have different human-readable and compact representations \
-             must explicitly mark their test cases with `serde_test::Configure`"
-        );
-    }
-}
-
-//////////////////////////////////////////////////////////////////////////
-
-struct DeserializerSeqVisitor<'a, 'de: 'a> {
-    de: &'a mut Deserializer<'de>,
-    len: Option<usize>,
-    end: Token,
-}
-
-impl<'de, 'a> SeqAccess<'de> for DeserializerSeqVisitor<'a, 'de> {
-    type Error = Error;
-
-    fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, Error>
-    where
-        T: DeserializeSeed<'de>,
-    {
-        if self.de.peek_token_opt() == Some(self.end) {
-            return Ok(None);
-        }
-        self.len = self.len.map(|len| len.saturating_sub(1));
-        seed.deserialize(&mut *self.de).map(Some)
-    }
-
-    fn size_hint(&self) -> Option<usize> {
-        self.len
-    }
-}
-
-//////////////////////////////////////////////////////////////////////////
-
-struct DeserializerMapVisitor<'a, 'de: 'a> {
-    de: &'a mut Deserializer<'de>,
-    len: Option<usize>,
-    end: Token,
-}
-
-impl<'de, 'a> MapAccess<'de> for DeserializerMapVisitor<'a, 'de> {
-    type Error = Error;
-
-    fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Error>
-    where
-        K: DeserializeSeed<'de>,
-    {
-        if self.de.peek_token_opt() == Some(self.end) {
-            return Ok(None);
-        }
-        self.len = self.len.map(|len| len.saturating_sub(1));
-        seed.deserialize(&mut *self.de).map(Some)
-    }
-
-    fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Error>
-    where
-        V: DeserializeSeed<'de>,
-    {
-        seed.deserialize(&mut *self.de)
-    }
-
-    fn size_hint(&self) -> Option<usize> {
-        self.len
-    }
-}
-
-//////////////////////////////////////////////////////////////////////////
-
-struct DeserializerEnumVisitor<'a, 'de: 'a> {
-    de: &'a mut Deserializer<'de>,
-}
-
-impl<'de, 'a> EnumAccess<'de> for DeserializerEnumVisitor<'a, 'de> {
-    type Error = Error;
-    type Variant = Self;
-
-    fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self), Error>
-    where
-        V: DeserializeSeed<'de>,
-    {
-        match self.de.peek_token() {
-            Token::UnitVariant { variant: v, .. }
-            | Token::NewtypeVariant { variant: v, .. }
-            | Token::TupleVariant { variant: v, .. }
-            | Token::StructVariant { variant: v, .. } => {
-                let de = v.into_deserializer();
-                let value = try!(seed.deserialize(de));
-                Ok((value, self))
-            }
-            _ => {
-                let value = try!(seed.deserialize(&mut *self.de));
-                Ok((value, self))
-            }
-        }
-    }
-}
-
-impl<'de, 'a> VariantAccess<'de> for DeserializerEnumVisitor<'a, 'de> {
-    type Error = Error;
-
-    fn unit_variant(self) -> Result<(), Error> {
-        match self.de.peek_token() {
-            Token::UnitVariant { .. } => {
-                self.de.next_token();
-                Ok(())
-            }
-            _ => Deserialize::deserialize(self.de),
-        }
-    }
-
-    fn newtype_variant_seed<T>(self, seed: T) -> Result<T::Value, Self::Error>
-    where
-        T: DeserializeSeed<'de>,
-    {
-        match self.de.peek_token() {
-            Token::NewtypeVariant { .. } => {
-                self.de.next_token();
-                seed.deserialize(self.de)
-            }
-            _ => seed.deserialize(self.de),
-        }
-    }
-
-    fn tuple_variant<V>(self, len: usize, visitor: V) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.de.peek_token() {
-            Token::TupleVariant { len: enum_len, .. } => {
-                let token = self.de.next_token();
-
-                if len == enum_len {
-                    self.de
-                        .visit_seq(Some(len), Token::TupleVariantEnd, visitor)
-                } else {
-                    unexpected!(token);
-                }
-            }
-            Token::Seq {
-                len: Some(enum_len),
-            } => {
-                let token = self.de.next_token();
-
-                if len == enum_len {
-                    self.de.visit_seq(Some(len), Token::SeqEnd, visitor)
-                } else {
-                    unexpected!(token);
-                }
-            }
-            _ => de::Deserializer::deserialize_any(self.de, visitor),
-        }
-    }
-
-    fn struct_variant<V>(
-        self,
-        fields: &'static [&'static str],
-        visitor: V,
-    ) -> Result<V::Value, Error>
-    where
-        V: Visitor<'de>,
-    {
-        match self.de.peek_token() {
-            Token::StructVariant { len: enum_len, .. } => {
-                let token = self.de.next_token();
-
-                if fields.len() == enum_len {
-                    self.de
-                        .visit_map(Some(fields.len()), Token::StructVariantEnd, visitor)
-                } else {
-                    unexpected!(token);
-                }
-            }
-            Token::Map {
-                len: Some(enum_len),
-            } => {
-                let token = self.de.next_token();
-
-                if fields.len() == enum_len {
-                    self.de
-                        .visit_map(Some(fields.len()), Token::MapEnd, visitor)
-                } else {
-                    unexpected!(token);
-                }
-            }
-            _ => de::Deserializer::deserialize_any(self.de, visitor),
-        }
-    }
-}
-
-//////////////////////////////////////////////////////////////////////////
-
-struct EnumMapVisitor<'a, 'de: 'a> {
-    de: &'a mut Deserializer<'de>,
-    variant: Option<Token>,
-    format: EnumFormat,
-}
-
-enum EnumFormat {
-    Seq,
-    Map,
-    Any,
-}
-
-impl<'a, 'de> EnumMapVisitor<'a, 'de> {
-    fn new(de: &'a mut Deserializer<'de>, variant: Token, format: EnumFormat) -> Self {
-        EnumMapVisitor {
-            de: de,
-            variant: Some(variant),
-            format: format,
-        }
-    }
-}
-
-impl<'de, 'a> MapAccess<'de> for EnumMapVisitor<'a, 'de> {
-    type Error = Error;
-
-    fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Error>
-    where
-        K: DeserializeSeed<'de>,
-    {
-        match self.variant.take() {
-            Some(Token::Str(variant)) => seed.deserialize(variant.into_deserializer()).map(Some),
-            Some(Token::Bytes(variant)) => seed
-                .deserialize(BytesDeserializer { value: variant })
-                .map(Some),
-            Some(Token::U32(variant)) => seed.deserialize(variant.into_deserializer()).map(Some),
-            Some(other) => unexpected!(other),
-            None => Ok(None),
-        }
-    }
-
-    fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Error>
-    where
-        V: DeserializeSeed<'de>,
-    {
-        match self.format {
-            EnumFormat::Seq => {
-                let value = {
-                    let visitor = DeserializerSeqVisitor {
-                        de: self.de,
-                        len: None,
-                        end: Token::TupleVariantEnd,
-                    };
-                    try!(seed.deserialize(SeqAccessDeserializer::new(visitor)))
-                };
-                assert_next_token!(self.de, Token::TupleVariantEnd);
-                Ok(value)
-            }
-            EnumFormat::Map => {
-                let value = {
-                    let visitor = DeserializerMapVisitor {
-                        de: self.de,
-                        len: None,
-                        end: Token::StructVariantEnd,
-                    };
-                    try!(seed.deserialize(MapAccessDeserializer::new(visitor)))
-                };
-                assert_next_token!(self.de, Token::StructVariantEnd);
-                Ok(value)
-            }
-            EnumFormat::Any => seed.deserialize(&mut *self.de),
-        }
-    }
-}
-
-struct BytesDeserializer {
-    value: &'static [u8],
-}
-
-impl<'de> de::Deserializer<'de> for BytesDeserializer {
-    type Error = Error;
-
-    fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: de::Visitor<'de>,
-    {
-        visitor.visit_bytes(self.value)
-    }
-
-    forward_to_deserialize_any! {
-        bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
-        bytes byte_buf option unit unit_struct newtype_struct seq tuple
-        tuple_struct map struct enum identifier ignored_any
-    }
-}

serde_test/src/error.rs

@@ -1,51 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use std::error;
-use std::fmt::{self, Display};
-
-use serde::{de, ser};
-
-#[derive(Clone, Debug)]
-pub struct Error {
-    msg: String,
-}
-
-impl ser::Error for Error {
-    fn custom<T: Display>(msg: T) -> Self {
-        Error {
-            msg: msg.to_string(),
-        }
-    }
-}
-
-impl de::Error for Error {
-    fn custom<T: Display>(msg: T) -> Self {
-        Error {
-            msg: msg.to_string(),
-        }
-    }
-}
-
-impl fmt::Display for Error {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str(&self.msg)
-    }
-}
-
-impl error::Error for Error {
-    fn description(&self) -> &str {
-        &self.msg
-    }
-}
-
-impl PartialEq<str> for Error {
-    fn eq(&self, other: &str) -> bool {
-        self.msg == other
-    }
-}

serde_test/src/lib.rs

@@ -1,202 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! This crate provides a convenient concise way to write unit tests for
-//! implementations of [`Serialize`] and [`Deserialize`].
-//!
-//! [`Serialize`]: https://docs.serde.rs/serde/ser/trait.Serialize.html
-//! [`Deserialize`]: https://docs.serde.rs/serde/de/trait.Deserialize.html
-//!
-//! The `Serialize` impl for a value can be characterized by the sequence of
-//! [`Serializer`] calls that are made in the course of serializing the value,
-//! so `serde_test` provides a [`Token`] abstraction which corresponds roughly
-//! to `Serializer` method calls. There is an [`assert_ser_tokens`] function to
-//! test that a value serializes to a particular sequence of method calls, an
-//! [`assert_de_tokens`] function to test that a value can be deserialized from
-//! a particular sequence of method calls, and an [`assert_tokens`] function to
-//! test both directions. There are also functions to test expected failure
-//! conditions.
-//!
-//! [`Serializer`]: https://docs.serde.rs/serde/ser/trait.Serializer.html
-//! [`Token`]: https://docs.serde.rs/serde_test/enum.Token.html
-//! [`assert_ser_tokens`]: https://docs.serde.rs/serde_test/fn.assert_ser_tokens.html
-//! [`assert_de_tokens`]: https://docs.serde.rs/serde_test/fn.assert_de_tokens.html
-//! [`assert_tokens`]: https://docs.serde.rs/serde_test/fn.assert_tokens.html
-//!
-//! Here is an example from the [`linked-hash-map`] crate.
-//!
-//! [`linked-hash-map`]: https://github.com/contain-rs/linked-hash-map
-//!
-//! ```rust
-//! # extern crate serde;
-//! #
-//! # macro_rules! ignore {
-//! #     ($($tt:tt)+) => {}
-//! # }
-//! #
-//! # ignore! {
-//! extern crate linked_hash_map;
-//! use linked_hash_map::LinkedHashMap;
-//! # }
-//!
-//! extern crate serde_test;
-//! use serde_test::{Token, assert_tokens};
-//!
-//! # use std::fmt;
-//! # use std::marker::PhantomData;
-//! #
-//! # use serde::ser::{Serialize, Serializer, SerializeMap};
-//! # use serde::de::{Deserialize, Deserializer, Visitor, MapAccess};
-//! #
-//! # // Dumb imitation of LinkedHashMap.
-//! # #[derive(PartialEq, Debug)]
-//! # struct LinkedHashMap<K, V>(Vec<(K, V)>);
-//! #
-//! # impl<K, V> LinkedHashMap<K, V> {
-//! #     fn new() -> Self {
-//! #         LinkedHashMap(Vec::new())
-//! #     }
-//! #
-//! #     fn insert(&mut self, k: K, v: V) {
-//! #         self.0.push((k, v));
-//! #     }
-//! # }
-//! #
-//! # impl<K, V> Serialize for LinkedHashMap<K, V>
-//! # where
-//! #     K: Serialize,
-//! #     V: Serialize,
-//! # {
-//! #     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-//! #     where
-//! #         S: Serializer,
-//! #     {
-//! #         let mut map = serializer.serialize_map(Some(self.0.len()))?;
-//! #         for &(ref k, ref v) in &self.0 {
-//! #             map.serialize_entry(k, v)?;
-//! #         }
-//! #         map.end()
-//! #     }
-//! # }
-//! #
-//! # struct LinkedHashMapVisitor<K, V>(PhantomData<(K, V)>);
-//! #
-//! # impl<'de, K, V> Visitor<'de> for LinkedHashMapVisitor<K, V>
-//! # where
-//! #     K: Deserialize<'de>,
-//! #     V: Deserialize<'de>,
-//! # {
-//! #     type Value = LinkedHashMap<K, V>;
-//! #
-//! #     fn expecting(&self, _: &mut fmt::Formatter) -> fmt::Result {
-//! #         unimplemented!()
-//! #     }
-//! #
-//! #     fn visit_map<M>(self, mut access: M) -> Result<Self::Value, M::Error>
-//! #     where
-//! #         M: MapAccess<'de>,
-//! #     {
-//! #         let mut map = LinkedHashMap::new();
-//! #         while let Some((key, value)) = access.next_entry()? {
-//! #             map.insert(key, value);
-//! #         }
-//! #         Ok(map)
-//! #     }
-//! # }
-//! #
-//! # impl<'de, K, V> Deserialize<'de> for LinkedHashMap<K, V>
-//! # where
-//! #     K: Deserialize<'de>,
-//! #     V: Deserialize<'de>,
-//! # {
-//! #     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-//! #     where
-//! #         D: Deserializer<'de>,
-//! #     {
-//! #         deserializer.deserialize_map(LinkedHashMapVisitor(PhantomData))
-//! #     }
-//! # }
-//! #
-//! #[test]
-//! # fn not_a_test_ser_de_empty() {}
-//! fn test_ser_de_empty() {
-//!     let map = LinkedHashMap::<char, u32>::new();
-//!
-//!     assert_tokens(&map, &[
-//!         Token::Map { len: Some(0) },
-//!         Token::MapEnd,
-//!     ]);
-//! }
-//!
-//! #[test]
-//! # fn not_a_test_ser_de() {}
-//! fn test_ser_de() {
-//!     let mut map = LinkedHashMap::new();
-//!     map.insert('b', 20);
-//!     map.insert('a', 10);
-//!     map.insert('c', 30);
-//!
-//!     assert_tokens(&map, &[
-//!         Token::Map { len: Some(3) },
-//!         Token::Char('b'),
-//!         Token::I32(20),
-//!
-//!         Token::Char('a'),
-//!         Token::I32(10),
-//!
-//!         Token::Char('c'),
-//!         Token::I32(30),
-//!         Token::MapEnd,
-//!     ]);
-//! }
-//! #
-//! # fn main() {
-//! #     test_ser_de_empty();
-//! #     test_ser_de();
-//! # }
-//! ```
-
-#![doc(html_root_url = "https://docs.rs/serde_test/1.0.77")]
-#![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
-// Whitelisted clippy lints
-#![cfg_attr(feature = "cargo-clippy", allow(float_cmp))]
-// Whitelisted clippy_pedantic lints
-#![cfg_attr(
-    feature = "cargo-clippy",
-    allow(
-        empty_line_after_outer_attr,
-        missing_docs_in_private_items,
-        redundant_field_names,
-        stutter,
-        use_debug,
-        use_self
-    )
-)]
-
-#[macro_use]
-extern crate serde;
-
-mod de;
-mod error;
-mod ser;
-
-mod assert;
-mod configure;
-mod token;
-
-pub use assert::{
-    assert_de_tokens, assert_de_tokens_error, assert_ser_tokens, assert_ser_tokens_error,
-    assert_tokens,
-};
-pub use token::Token;
-
-pub use configure::{Compact, Configure, Readable};
-
-// Not public API.
-#[doc(hidden)]
-pub use de::Deserializer;

serde_test/src/ser.rs

@@ -1,472 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use serde::{ser, Serialize};
-
-use error::Error;
-use token::Token;
-
-/// A `Serializer` that ensures that a value serializes to a given list of
-/// tokens.
-#[derive(Debug)]
-pub struct Serializer<'a> {
-    tokens: &'a [Token],
-}
-
-impl<'a> Serializer<'a> {
-    /// Creates the serializer.
-    pub fn new(tokens: &'a [Token]) -> Self {
-        Serializer { tokens: tokens }
-    }
-
-    /// Pulls the next token off of the serializer, ignoring it.
-    fn next_token(&mut self) -> Option<Token> {
-        if let Some((&first, rest)) = self.tokens.split_first() {
-            self.tokens = rest;
-            Some(first)
-        } else {
-            None
-        }
-    }
-
-    pub fn remaining(&self) -> usize {
-        self.tokens.len()
-    }
-}
-
-macro_rules! assert_next_token {
-    ($ser:expr, $expected:ident) => {
-        assert_next_token!($ser, stringify!($expected), Token::$expected, true);
-    };
-    ($ser:expr, $expected:ident($v:expr)) => {
-        assert_next_token!(
-            $ser,
-            format_args!(concat!(stringify!($expected), "({:?})"), $v),
-            Token::$expected(v),
-            v == $v
-        );
-    };
-    ($ser:expr, $expected:ident { $($k:ident),* }) => {
-        let compare = ($($k,)*);
-        let field_format = || {
-            use std::fmt::Write;
-            let mut buffer = String::new();
-            $(
-                write!(&mut buffer, concat!(stringify!($k), ": {:?}, "), $k).unwrap();
-            )*
-            buffer
-        };
-        assert_next_token!(
-            $ser,
-            format_args!(concat!(stringify!($expected), " {{ {}}}"), field_format()),
-            Token::$expected { $($k),* },
-            ($($k,)*) == compare
-        );
-    };
-    ($ser:expr, $expected:expr, $pat:pat, $guard:expr) => {
-        match $ser.next_token() {
-            Some($pat) if $guard => {}
-            Some(other) => {
-                panic!("expected Token::{} but serialized as {}",
-                       $expected, other);
-            }
-            None => {
-                panic!("expected Token::{} after end of serialized tokens",
-                       $expected);
-            }
-        }
-    };
-}
-
-impl<'s, 'a> ser::Serializer for &'s mut Serializer<'a> {
-    type Ok = ();
-    type Error = Error;
-
-    type SerializeSeq = Self;
-    type SerializeTuple = Self;
-    type SerializeTupleStruct = Self;
-    type SerializeTupleVariant = Variant<'s, 'a>;
-    type SerializeMap = Self;
-    type SerializeStruct = Self;
-    type SerializeStructVariant = Variant<'s, 'a>;
-
-    fn serialize_bool(self, v: bool) -> Result<(), Error> {
-        assert_next_token!(self, Bool(v));
-        Ok(())
-    }
-
-    fn serialize_i8(self, v: i8) -> Result<(), Error> {
-        assert_next_token!(self, I8(v));
-        Ok(())
-    }
-
-    fn serialize_i16(self, v: i16) -> Result<(), Error> {
-        assert_next_token!(self, I16(v));
-        Ok(())
-    }
-
-    fn serialize_i32(self, v: i32) -> Result<(), Error> {
-        assert_next_token!(self, I32(v));
-        Ok(())
-    }
-
-    fn serialize_i64(self, v: i64) -> Result<(), Error> {
-        assert_next_token!(self, I64(v));
-        Ok(())
-    }
-
-    fn serialize_u8(self, v: u8) -> Result<(), Error> {
-        assert_next_token!(self, U8(v));
-        Ok(())
-    }
-
-    fn serialize_u16(self, v: u16) -> Result<(), Error> {
-        assert_next_token!(self, U16(v));
-        Ok(())
-    }
-
-    fn serialize_u32(self, v: u32) -> Result<(), Error> {
-        assert_next_token!(self, U32(v));
-        Ok(())
-    }
-
-    fn serialize_u64(self, v: u64) -> Result<(), Error> {
-        assert_next_token!(self, U64(v));
-        Ok(())
-    }
-
-    fn serialize_f32(self, v: f32) -> Result<(), Error> {
-        assert_next_token!(self, F32(v));
-        Ok(())
-    }
-
-    fn serialize_f64(self, v: f64) -> Result<(), Error> {
-        assert_next_token!(self, F64(v));
-        Ok(())
-    }
-
-    fn serialize_char(self, v: char) -> Result<(), Error> {
-        assert_next_token!(self, Char(v));
-        Ok(())
-    }
-
-    fn serialize_str(self, v: &str) -> Result<(), Error> {
-        match self.tokens.first() {
-            Some(&Token::BorrowedStr(_)) => assert_next_token!(self, BorrowedStr(v)),
-            Some(&Token::String(_)) => assert_next_token!(self, String(v)),
-            _ => assert_next_token!(self, Str(v)),
-        }
-        Ok(())
-    }
-
-    fn serialize_bytes(self, v: &[u8]) -> Result<(), Self::Error> {
-        match self.tokens.first() {
-            Some(&Token::BorrowedBytes(_)) => assert_next_token!(self, BorrowedBytes(v)),
-            Some(&Token::ByteBuf(_)) => assert_next_token!(self, ByteBuf(v)),
-            _ => assert_next_token!(self, Bytes(v)),
-        }
-        Ok(())
-    }
-
-    fn serialize_unit(self) -> Result<(), Error> {
-        assert_next_token!(self, Unit);
-        Ok(())
-    }
-
-    fn serialize_unit_struct(self, name: &'static str) -> Result<(), Error> {
-        assert_next_token!(self, UnitStruct { name });
-        Ok(())
-    }
-
-    fn serialize_unit_variant(
-        self,
-        name: &'static str,
-        _variant_index: u32,
-        variant: &'static str,
-    ) -> Result<(), Error> {
-        if self.tokens.first() == Some(&Token::Enum { name: name }) {
-            self.next_token();
-            assert_next_token!(self, Str(variant));
-            assert_next_token!(self, Unit);
-        } else {
-            assert_next_token!(self, UnitVariant { name, variant });
-        }
-        Ok(())
-    }
-
-    fn serialize_newtype_struct<T: ?Sized>(self, name: &'static str, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        assert_next_token!(self, NewtypeStruct { name });
-        value.serialize(self)
-    }
-
-    fn serialize_newtype_variant<T: ?Sized>(
-        self,
-        name: &'static str,
-        _variant_index: u32,
-        variant: &'static str,
-        value: &T,
-    ) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        if self.tokens.first() == Some(&Token::Enum { name: name }) {
-            self.next_token();
-            assert_next_token!(self, Str(variant));
-        } else {
-            assert_next_token!(self, NewtypeVariant { name, variant });
-        }
-        value.serialize(self)
-    }
-
-    fn serialize_none(self) -> Result<(), Error> {
-        assert_next_token!(self, None);
-        Ok(())
-    }
-
-    fn serialize_some<T: ?Sized>(self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        assert_next_token!(self, Some);
-        value.serialize(self)
-    }
-
-    fn serialize_seq(self, len: Option<usize>) -> Result<Self, Error> {
-        assert_next_token!(self, Seq { len });
-        Ok(self)
-    }
-
-    fn serialize_tuple(self, len: usize) -> Result<Self, Error> {
-        assert_next_token!(self, Tuple { len });
-        Ok(self)
-    }
-
-    fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self, Error> {
-        assert_next_token!(self, TupleStruct { name, len });
-        Ok(self)
-    }
-
-    fn serialize_tuple_variant(
-        self,
-        name: &'static str,
-        _variant_index: u32,
-        variant: &'static str,
-        len: usize,
-    ) -> Result<Self::SerializeTupleVariant, Error> {
-        if self.tokens.first() == Some(&Token::Enum { name: name }) {
-            self.next_token();
-            assert_next_token!(self, Str(variant));
-            let len = Some(len);
-            assert_next_token!(self, Seq { len });
-            Ok(Variant {
-                ser: self,
-                end: Token::SeqEnd,
-            })
-        } else {
-            assert_next_token!(self, TupleVariant { name, variant, len });
-            Ok(Variant {
-                ser: self,
-                end: Token::TupleVariantEnd,
-            })
-        }
-    }
-
-    fn serialize_map(self, len: Option<usize>) -> Result<Self, Error> {
-        assert_next_token!(self, Map { len });
-        Ok(self)
-    }
-
-    fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self, Error> {
-        assert_next_token!(self, Struct { name, len });
-        Ok(self)
-    }
-
-    fn serialize_struct_variant(
-        self,
-        name: &'static str,
-        _variant_index: u32,
-        variant: &'static str,
-        len: usize,
-    ) -> Result<Self::SerializeStructVariant, Error> {
-        if self.tokens.first() == Some(&Token::Enum { name: name }) {
-            self.next_token();
-            assert_next_token!(self, Str(variant));
-            let len = Some(len);
-            assert_next_token!(self, Map { len });
-            Ok(Variant {
-                ser: self,
-                end: Token::MapEnd,
-            })
-        } else {
-            assert_next_token!(self, StructVariant { name, variant, len });
-            Ok(Variant {
-                ser: self,
-                end: Token::StructVariantEnd,
-            })
-        }
-    }
-
-    fn is_human_readable(&self) -> bool {
-        panic!(
-            "Types which have different human-readable and compact representations \
-             must explicitly mark their test cases with `serde_test::Configure`"
-        );
-    }
-}
-
-pub struct Variant<'s, 'a: 's> {
-    ser: &'s mut Serializer<'a>,
-    end: Token,
-}
-
-impl<'s, 'a> ser::SerializeSeq for &'s mut Serializer<'a> {
-    type Ok = ();
-    type Error = Error;
-
-    fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        value.serialize(&mut **self)
-    }
-
-    fn end(self) -> Result<(), Error> {
-        assert_next_token!(self, SeqEnd);
-        Ok(())
-    }
-}
-
-impl<'s, 'a> ser::SerializeTuple for &'s mut Serializer<'a> {
-    type Ok = ();
-    type Error = Error;
-
-    fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        value.serialize(&mut **self)
-    }
-
-    fn end(self) -> Result<(), Error> {
-        assert_next_token!(self, TupleEnd);
-        Ok(())
-    }
-}
-
-impl<'s, 'a> ser::SerializeTupleStruct for &'s mut Serializer<'a> {
-    type Ok = ();
-    type Error = Error;
-
-    fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        value.serialize(&mut **self)
-    }
-
-    fn end(self) -> Result<(), Error> {
-        assert_next_token!(self, TupleStructEnd);
-        Ok(())
-    }
-}
-
-impl<'s, 'a> ser::SerializeTupleVariant for Variant<'s, 'a> {
-    type Ok = ();
-    type Error = Error;
-
-    fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
-    where
-        T: Serialize,
-    {
-        value.serialize(&mut *self.ser)
-    }
-
-    fn end(self) -> Result<(), Error> {
-        match self.end {
-            Token::TupleVariantEnd => assert_next_token!(self.ser, TupleVariantEnd),
-            Token::SeqEnd => assert_next_token!(self.ser, SeqEnd),
-            _ => unreachable!(),
-        }
-        Ok(())
-    }
-}
-
-impl<'s, 'a> ser::SerializeMap for &'s mut Serializer<'a> {
-    type Ok = ();
-    type Error = Error;
-
-    fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Self::Error>
-    where
-        T: Serialize,
-    {
-        key.serialize(&mut **self)
-    }
-
-    fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error>
-    where
-        T: Serialize,
-    {
-        value.serialize(&mut **self)
-    }
-
-    fn end(self) -> Result<(), Self::Error> {
-        assert_next_token!(self, MapEnd);
-        Ok(())
-    }
-}
-
-impl<'s, 'a> ser::SerializeStruct for &'s mut Serializer<'a> {
-    type Ok = ();
-    type Error = Error;
-
-    fn serialize_field<T: ?Sized>(
-        &mut self,
-        key: &'static str,
-        value: &T,
-    ) -> Result<(), Self::Error>
-    where
-        T: Serialize,
-    {
-        try!(key.serialize(&mut **self));
-        value.serialize(&mut **self)
-    }
-
-    fn end(self) -> Result<(), Self::Error> {
-        assert_next_token!(self, StructEnd);
-        Ok(())
-    }
-}
-
-impl<'s, 'a> ser::SerializeStructVariant for Variant<'s, 'a> {
-    type Ok = ();
-    type Error = Error;
-
-    fn serialize_field<T: ?Sized>(
-        &mut self,
-        key: &'static str,
-        value: &T,
-    ) -> Result<(), Self::Error>
-    where
-        T: Serialize,
-    {
-        try!(key.serialize(&mut *self.ser));
-        value.serialize(&mut *self.ser)
-    }
-
-    fn end(self) -> Result<(), Self::Error> {
-        match self.end {
-            Token::StructVariantEnd => assert_next_token!(self.ser, StructVariantEnd),
-            Token::MapEnd => assert_next_token!(self.ser, MapEnd),
-            _ => unreachable!(),
-        }
-        Ok(())
-    }
-}

serde_test/src/token.rs

@@ -1,572 +0,0 @@
-// Copyright 2017 Serde Developers
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use std::fmt::{self, Debug, Display};
-
-#[derive(Copy, Clone, PartialEq, Debug)]
-pub enum Token {
-    /// A serialized `bool`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&true, &[Token::Bool(true)]);
-    /// ```
-    Bool(bool),
-
-    /// A serialized `i8`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0i8, &[Token::I8(0)]);
-    /// ```
-    I8(i8),
-
-    /// A serialized `i16`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0i16, &[Token::I16(0)]);
-    /// ```
-    I16(i16),
-
-    /// A serialized `i32`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0i32, &[Token::I32(0)]);
-    /// ```
-    I32(i32),
-
-    /// A serialized `i64`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0i64, &[Token::I64(0)]);
-    /// ```
-    I64(i64),
-
-    /// A serialized `u8`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0u8, &[Token::U8(0)]);
-    /// ```
-    U8(u8),
-
-    /// A serialized `u16`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0u16, &[Token::U16(0)]);
-    /// ```
-    U16(u16),
-
-    /// A serialized `u32`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0u32, &[Token::U32(0)]);
-    /// ```
-    U32(u32),
-
-    /// A serialized `u64`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0u64, &[Token::U64(0)]);
-    /// ```
-    U64(u64),
-
-    /// A serialized `f32`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0f32, &[Token::F32(0.0)]);
-    /// ```
-    F32(f32),
-
-    /// A serialized `f64`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&0f64, &[Token::F64(0.0)]);
-    /// ```
-    F64(f64),
-
-    /// A serialized `char`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&'\n', &[Token::Char('\n')]);
-    /// ```
-    Char(char),
-
-    /// A serialized `str`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// let s = String::from("transient");
-    /// assert_tokens(&s, &[Token::Str("transient")]);
-    /// ```
-    Str(&'static str),
-
-    /// A borrowed `str`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// let s: &str = "borrowed";
-    /// assert_tokens(&s, &[Token::BorrowedStr("borrowed")]);
-    /// ```
-    BorrowedStr(&'static str),
-
-    /// A serialized `String`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// let s = String::from("owned");
-    /// assert_tokens(&s, &[Token::String("owned")]);
-    /// ```
-    String(&'static str),
-
-    /// A serialized `[u8]`
-    Bytes(&'static [u8]),
-
-    /// A borrowed `[u8]`.
-    BorrowedBytes(&'static [u8]),
-
-    /// A serialized `ByteBuf`
-    ByteBuf(&'static [u8]),
-
-    /// A serialized `Option<T>` containing none.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// let opt = None::<char>;
-    /// assert_tokens(&opt, &[Token::None]);
-    /// ```
-    None,
-
-    /// The header to a serialized `Option<T>` containing some value.
-    ///
-    /// The tokens of the value follow after this header.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// let opt = Some('c');
-    /// assert_tokens(&opt, &[
-    ///     Token::Some,
-    ///     Token::Char('c'),
-    /// ]);
-    /// ```
-    Some,
-
-    /// A serialized `()`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// assert_tokens(&(), &[Token::Unit]);
-    /// ```
-    Unit,
-
-    /// A serialized unit struct of the given name.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// struct X;
-    ///
-    /// assert_tokens(&X, &[Token::UnitStruct { name: "X" }]);
-    /// # }
-    /// ```
-    UnitStruct { name: &'static str },
-
-    /// A unit variant of an enum.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// enum E {
-    ///     A,
-    /// }
-    ///
-    /// let a = E::A;
-    /// assert_tokens(&a, &[Token::UnitVariant { name: "E", variant: "A" }]);
-    /// # }
-    /// ```
-    UnitVariant {
-        name: &'static str,
-        variant: &'static str,
-    },
-
-    /// The header to a serialized newtype struct of the given name.
-    ///
-    /// After this header is the value contained in the newtype struct.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// struct N(String);
-    ///
-    /// let n = N("newtype".to_owned());
-    /// assert_tokens(&n, &[
-    ///     Token::NewtypeStruct { name: "N" },
-    ///     Token::String("newtype"),
-    /// ]);
-    /// # }
-    /// ```
-    NewtypeStruct { name: &'static str },
-
-    /// The header to a newtype variant of an enum.
-    ///
-    /// After this header is the value contained in the newtype variant.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// enum E {
-    ///     B(u8),
-    /// }
-    ///
-    /// let b = E::B(0);
-    /// assert_tokens(&b, &[
-    ///     Token::NewtypeVariant { name: "E", variant: "B" },
-    ///     Token::U8(0),
-    /// ]);
-    /// # }
-    /// ```
-    NewtypeVariant {
-        name: &'static str,
-        variant: &'static str,
-    },
-
-    /// The header to a sequence.
-    ///
-    /// After this header are the elements of the sequence, followed by
-    /// `SeqEnd`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// let vec = vec!['a', 'b', 'c'];
-    /// assert_tokens(&vec, &[
-    ///     Token::Seq { len: Some(3) },
-    ///     Token::Char('a'),
-    ///     Token::Char('b'),
-    ///     Token::Char('c'),
-    ///     Token::SeqEnd,
-    /// ]);
-    /// ```
-    Seq { len: Option<usize> },
-
-    /// An indicator of the end of a sequence.
-    SeqEnd,
-
-    /// The header to a tuple.
-    ///
-    /// After this header are the elements of the tuple, followed by `TupleEnd`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// let tuple = ('a', 100);
-    /// assert_tokens(&tuple, &[
-    ///     Token::Tuple { len: 2 },
-    ///     Token::Char('a'),
-    ///     Token::I32(100),
-    ///     Token::TupleEnd,
-    /// ]);
-    /// ```
-    Tuple { len: usize },
-
-    /// An indicator of the end of a tuple.
-    TupleEnd,
-
-    /// The header to a tuple struct.
-    ///
-    /// After this header are the fields of the tuple struct, followed by
-    /// `TupleStructEnd`.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// struct T(u8, u8);
-    ///
-    /// let t = T(0, 0);
-    /// assert_tokens(&t, &[
-    ///     Token::TupleStruct { name: "T", len: 2 },
-    ///     Token::U8(0),
-    ///     Token::U8(0),
-    ///     Token::TupleStructEnd,
-    /// ]);
-    /// # }
-    /// ```
-    TupleStruct { name: &'static str, len: usize },
-
-    /// An indicator of the end of a tuple struct.
-    TupleStructEnd,
-
-    /// The header to a tuple variant of an enum.
-    ///
-    /// After this header are the fields of the tuple variant, followed by
-    /// `TupleVariantEnd`.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// enum E {
-    ///     C(u8, u8),
-    /// }
-    ///
-    /// let c = E::C(0, 0);
-    /// assert_tokens(&c, &[
-    ///     Token::TupleVariant { name: "E", variant: "C", len: 2 },
-    ///     Token::U8(0),
-    ///     Token::U8(0),
-    ///     Token::TupleVariantEnd,
-    /// ]);
-    /// # }
-    /// ```
-    TupleVariant {
-        name: &'static str,
-        variant: &'static str,
-        len: usize,
-    },
-
-    /// An indicator of the end of a tuple variant.
-    TupleVariantEnd,
-
-    /// The header to a map.
-    ///
-    /// After this header are the entries of the map, followed by `MapEnd`.
-    ///
-    /// ```rust
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// use std::collections::BTreeMap;
-    ///
-    /// let mut map = BTreeMap::new();
-    /// map.insert('A', 65);
-    /// map.insert('Z', 90);
-    ///
-    /// assert_tokens(&map, &[
-    ///     Token::Map { len: Some(2) },
-    ///     Token::Char('A'),
-    ///     Token::I32(65),
-    ///     Token::Char('Z'),
-    ///     Token::I32(90),
-    ///     Token::MapEnd,
-    /// ]);
-    /// ```
-    Map { len: Option<usize> },
-
-    /// An indicator of the end of a map.
-    MapEnd,
-
-    /// The header of a struct.
-    ///
-    /// After this header are the fields of the struct, followed by `StructEnd`.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// struct S {
-    ///     a: u8,
-    ///     b: u8,
-    /// }
-    ///
-    /// let s = S { a: 0, b: 0 };
-    /// assert_tokens(&s, &[
-    ///     Token::Struct { name: "S", len: 2 },
-    ///     Token::Str("a"),
-    ///     Token::U8(0),
-    ///     Token::Str("b"),
-    ///     Token::U8(0),
-    ///     Token::StructEnd,
-    /// ]);
-    /// # }
-    /// ```
-    Struct { name: &'static str, len: usize },
-
-    /// An indicator of the end of a struct.
-    StructEnd,
-
-    /// The header of a struct variant of an enum.
-    ///
-    /// After this header are the fields of the struct variant, followed by
-    /// `StructVariantEnd`.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// enum E {
-    ///     D { d: u8 },
-    /// }
-    ///
-    /// let d = E::D { d: 0 };
-    /// assert_tokens(&d, &[
-    ///     Token::StructVariant { name: "E", variant: "D", len: 1 },
-    ///     Token::Str("d"),
-    ///     Token::U8(0),
-    ///     Token::StructVariantEnd,
-    /// ]);
-    /// # }
-    /// ```
-    StructVariant {
-        name: &'static str,
-        variant: &'static str,
-        len: usize,
-    },
-
-    /// An indicator of the end of a struct variant.
-    StructVariantEnd,
-
-    /// The header to an enum of the given name.
-    ///
-    /// ```rust
-    /// # #[macro_use]
-    /// # extern crate serde_derive;
-    /// #
-    /// # extern crate serde;
-    /// # extern crate serde_test;
-    /// #
-    /// # use serde_test::{assert_tokens, Token};
-    /// #
-    /// # fn main() {
-    /// #[derive(Serialize, Deserialize, PartialEq, Debug)]
-    /// enum E {
-    ///     A,
-    ///     B(u8),
-    ///     C(u8, u8),
-    ///     D { d: u8 },
-    /// }
-    ///
-    /// let a = E::A;
-    /// assert_tokens(&a, &[
-    ///     Token::Enum { name: "E" },
-    ///     Token::Str("A"),
-    ///     Token::Unit,
-    /// ]);
-    ///
-    /// let b = E::B(0);
-    /// assert_tokens(&b, &[
-    ///     Token::Enum { name: "E" },
-    ///     Token::Str("B"),
-    ///     Token::U8(0),
-    /// ]);
-    ///
-    /// let c = E::C(0, 0);
-    /// assert_tokens(&c, &[
-    ///     Token::Enum { name: "E" },
-    ///     Token::Str("C"),
-    ///     Token::Seq { len: Some(2) },
-    ///     Token::U8(0),
-    ///     Token::U8(0),
-    ///     Token::SeqEnd,
-    /// ]);
-    ///
-    /// let d = E::D { d: 0 };
-    /// assert_tokens(&d, &[
-    ///     Token::Enum { name: "E" },
-    ///     Token::Str("D"),
-    ///     Token::Map { len: Some(1) },
-    ///     Token::Str("d"),
-    ///     Token::U8(0),
-    ///     Token::MapEnd,
-    /// ]);
-    /// # }
-    /// ```
-    Enum { name: &'static str },
-}
-
-impl Display for Token {
-    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        Debug::fmt(self, formatter)
-    }
-}

serde_tests/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "serde_tests"
+version = "0.4.1"
+authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
+license = "MIT/Apache-2.0"
+description = "A generic serialization/deserialization framework"
+repository = "https://github.com/serde-rs/serde"
+documentation = "http://serde-rs.github.io/serde/serde"
+readme = "README.md"
+keywords = ["serialization"]
+build = "build.rs"
+
+[build-dependencies]
+syntex = { version = "*", optional = true }
+syntex_syntax = { version = "*" }
+serde_codegen = { version = "*", path = "../serde_codegen", features = ["with-syntex"] }
+
+[dev-dependencies]
+num = "*"
+rustc-serialize = "*"
+serde = { version = "*", path = "../serde" }
+syntex = "*"
+
+[[test]]
+name = "test"
+path = "tests/test.rs"
+
+[[bench]]
+name = "bench"
+path = "benches/bench.rs"

serde_tests/benches/bench.rs

@@ -0,0 +1,8 @@
+#![feature(test)]
+
+extern crate num;
+extern crate rustc_serialize;
+extern crate serde;
+extern crate test;
+
+include!(concat!(env!("OUT_DIR"), "/bench.rs"));

serde_tests/benches/bench.rs.in

@@ -0,0 +1,5 @@
+mod bench_enum;
+mod bench_log;
+mod bench_map;
+mod bench_struct;
+mod bench_vec;