Point the serde_json readme at the root readme

json deser from Value adjusted to be equal to deser from strings

.gitignore

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

.travis.yml

@@ -1,16 +1,37 @@
+sudo: false
 language: rust
+rust:
+  - stable
+  - beta
+  - nightly
+env:
+  global:
+    secure: HO41LMpMXkF2In9+1sxWVu7fgolL+y9+4Q5PI6wZX2L5pDwpPJCjxaQarQXCEnoIxED1PlP03JuF7ULNz0zw1ylYhAOfOSdkxFZRnE2wMZqq6qvXBHwyMiDrAociIzoPKSGv7JVrKPsjsnd+96K6xxueIodQZrmAdyq7N/M82Mc=
+  matrix:
+    - CRATE=serde_tests TARGET=test
+matrix:
+  include:
+    - rust: nightly
+      env: CRATE=serde_macros TARGET=test
+    - rust: nightly
+      env: CRATE=serde_macros TARGET=bench
+    - rust: nightly
+      env: CRATE=serde_tests TARGET=bench
 script:
-- cargo test
-- cargo bench
-- cargo doc
+  - (cd $CRATE && cargo $TARGET)
 after_success: |
   [ $TRAVIS_BRANCH = "master" ] &&
   [ $TRAVIS_PULL_REQUEST  = false ] &&
-  cargo doc &&
+  mkdir -p target/doc &&
+  (cd serde && cargo doc --no-deps) &&
+  (cd serde_codegen && cargo doc --no-deps) &&
+  (cd serde_macros && cargo doc --no-deps) &&
+  (cd serde_json && 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 &&
+  cp -r serde_json/target/doc target/doc/serde_json &&
   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
-env:
-  global:
-    secure: HO41LMpMXkF2In9+1sxWVu7fgolL+y9+4Q5PI6wZX2L5pDwpPJCjxaQarQXCEnoIxED1PlP03JuF7ULNz0zw1ylYhAOfOSdkxFZRnE2wMZqq6qvXBHwyMiDrAociIzoPKSGv7JVrKPsjsnd+96K6xxueIodQZrmAdyq7N/M82Mc=

README.md

@@ -24,8 +24,8 @@ and
 for the annotated type:
 
 ```rust
-#[feature(custom_derive, plugin)]
-#[plugin(serde_macros)]
+#![feature(custom_derive, plugin)]
+#![plugin(serde_macros)]
 
 extern crate serde;
 
@@ -39,7 +39,7 @@ struct Point {
 ```
 
 Serde bundles a high performance JSON serializer and deserializer,
-[serde::json](http://serde-rs.github.io/serde/serde/json/index.html),
+[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
@@ -47,7 +47,7 @@ and
 that make it easy to go to and from JSON:
 
 ```rust
-use serde::json;
+use serde_json;
 
 ...
 
@@ -59,7 +59,7 @@ 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
+[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
@@ -174,7 +174,7 @@ impl<K, V, I> MapVisitor for MapIteratorVisitor<I>
 ```
 
 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
+as a named map. Its visitor uses a simple state machine to iterate through all
 the fields:
 
 ```rust
@@ -187,7 +187,7 @@ 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 {
+        serializer.visit_struct("Point", PointMapVisitor {
             value: self,
             state: 0,
         })
@@ -275,7 +275,7 @@ to generate an error for a few common error conditions. Here's how it could be u
     fn visit_string<E>(&mut self, _: String) -> Result<i32, E>
         where E: Error,
     {
-        Err(serde::de::Error::syntax_error())
+        Err(serde::de::Error::syntax("expect a string"))
     }
 
     ...
@@ -366,7 +366,7 @@ impl serde::Deserialize for PointField {
                 match value {
                     "x" => Ok(Field::X),
                     "y" => Ok(Field::Y),
-                    _ => Err(serde::de::Error::syntax_error()),
+                    _ => Err(serde::de::Error::syntax("expected x or y")),
                 }
             }
         }
@@ -383,7 +383,7 @@ 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)
+        deserializer.visit_struct("Point", PointVisitor)
     }
 }
 

serde/Cargo.toml

@@ -1,17 +1,17 @@
 [package]
 name = "serde"
-version = "0.3.3"
+version = "0.5.0"
 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"
+readme = "../README.md"
 keywords = ["serialization"]
 
 [dependencies]
 num = "*"
 
-[dev-dependencies]
-rustc-serialize = "*"
-serde_macros = { version = "*", path = "serde_macros" }
+[features]
+nightly = []
+

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

@@ -1,6 +1,8 @@
 //! Helper module to enable serializing bytes more efficiently
 
 use std::ops;
+use std::fmt;
+use std::ascii;
 
 use ser;
 use de;
@@ -8,10 +10,17 @@ 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 {
@@ -28,6 +37,12 @@ impl<'a> From<&'a Vec<u8>> for Bytes<'a> {
     }
 }
 
+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];
 
@@ -46,7 +61,7 @@ impl<'a> ser::Serialize for Bytes<'a> {
 ///////////////////////////////////////////////////////////////////////////////
 
 /// `ByteBuf` wraps a `Vec<u8>` in order to hook into serialize and from deserialize a byte array.
-#[derive(Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
+#[derive(Clone, Eq, Hash, PartialEq, PartialOrd, Ord)]
 pub struct ByteBuf {
     bytes: Vec<u8>,
 }
@@ -65,10 +80,22 @@ impl ByteBuf {
     }
 }
 
-impl<T> From<T> for ByteBuf where T: Into<Vec<u8>> {
-    fn from(bytes: T) -> Self {
+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.into(),
+            bytes: bytes,
         }
     }
 }
@@ -172,3 +199,15 @@ impl de::Deserialize for ByteBuf {
         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/impls.rs

@@ -0,0 +1,942 @@
+use std::borrow::Cow;
+use std::collections::{
+    BinaryHeap,
+    BTreeMap,
+    BTreeSet,
+    LinkedList,
+    HashMap,
+    HashSet,
+    VecDeque,
+};
+#[cfg(feature = "nightly")]
+use collections::enum_set::{CLike, EnumSet};
+#[cfg(feature = "nightly")]
+use collections::vec_map::VecMap;
+use std::hash::Hash;
+use std::marker::PhantomData;
+use std::path;
+use std::rc::Rc;
+use std::str;
+use std::sync::Arc;
+
+use num::FromPrimitive;
+
+#[cfg(feature = "nightly")]
+use core::nonzero::{NonZero, Zeroable};
+
+#[cfg(feature = "nightly")]
+use std::num::Zero;
+
+use de::{
+    Deserialize,
+    Deserializer,
+    EnumVisitor,
+    Error,
+    MapVisitor,
+    SeqVisitor,
+    VariantVisitor,
+    Visitor,
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub struct UnitVisitor;
+
+impl Visitor for UnitVisitor {
+    type Value = ();
+
+    fn visit_unit<E>(&mut self) -> Result<(), E>
+        where E: Error,
+    {
+        Ok(())
+    }
+
+    fn visit_seq<V>(&mut self, mut visitor: V) -> Result<(), V::Error>
+        where V: SeqVisitor,
+    {
+        visitor.end()
+    }
+}
+
+impl Deserialize for () {
+    fn deserialize<D>(deserializer: &mut D) -> Result<(), D::Error>
+        where D: Deserializer,
+    {
+        deserializer.visit_unit(UnitVisitor)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub struct BoolVisitor;
+
+impl Visitor for BoolVisitor {
+    type Value = bool;
+
+    fn visit_bool<E>(&mut self, v: bool) -> Result<bool, E>
+        where E: Error,
+    {
+        Ok(v)
+    }
+
+    fn visit_str<E>(&mut self, s: &str) -> Result<bool, E>
+        where E: Error,
+    {
+        match s.trim() {
+            "true" => Ok(true),
+            "false" => Ok(false),
+            _ => Err(Error::syntax("expected `true` or `false`")),
+        }
+    }
+}
+
+impl Deserialize for bool {
+    fn deserialize<D>(deserializer: &mut D) -> Result<bool, D::Error>
+        where D: Deserializer,
+    {
+        deserializer.visit_bool(BoolVisitor)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+macro_rules! impl_deserialize_num_method {
+    ($src_ty:ty, $method:ident, $from_method:ident) => {
+        #[inline]
+        fn $method<E>(&mut self, v: $src_ty) -> Result<T, E>
+            where E: Error,
+        {
+            match FromPrimitive::$from_method(v) {
+                Some(v) => Ok(v),
+                None => Err(Error::syntax("expected a number")),
+            }
+        }
+    }
+}
+
+pub struct PrimitiveVisitor<T> {
+    marker: PhantomData<T>,
+}
+
+impl<T> PrimitiveVisitor<T> {
+    #[inline]
+    pub fn new() -> Self {
+        PrimitiveVisitor {
+            marker: PhantomData,
+        }
+    }
+}
+
+impl<
+    T: Deserialize + FromPrimitive + str::FromStr
+> Visitor for PrimitiveVisitor<T> {
+    type Value = T;
+
+    impl_deserialize_num_method!(isize, visit_isize, from_isize);
+    impl_deserialize_num_method!(i8, visit_i8, from_i8);
+    impl_deserialize_num_method!(i16, visit_i16, from_i16);
+    impl_deserialize_num_method!(i32, visit_i32, from_i32);
+    impl_deserialize_num_method!(i64, visit_i64, from_i64);
+    impl_deserialize_num_method!(usize, visit_usize, from_usize);
+    impl_deserialize_num_method!(u8, visit_u8, from_u8);
+    impl_deserialize_num_method!(u16, visit_u16, from_u16);
+    impl_deserialize_num_method!(u32, visit_u32, from_u32);
+    impl_deserialize_num_method!(u64, visit_u64, from_u64);
+    impl_deserialize_num_method!(f32, visit_f32, from_f32);
+    impl_deserialize_num_method!(f64, visit_f64, from_f64);
+
+    #[inline]
+    fn visit_str<E>(&mut self, v: &str) -> Result<T, E>
+        where E: Error,
+    {
+        str::FromStr::from_str(v.trim()).or(Err(Error::syntax("expected a str")))
+    }
+}
+
+macro_rules! impl_deserialize_num {
+    ($ty:ty, $method:ident) => {
+        impl Deserialize for $ty {
+            #[inline]
+            fn deserialize<D>(deserializer: &mut D) -> Result<$ty, D::Error>
+                where D: Deserializer,
+            {
+                deserializer.$method(PrimitiveVisitor::new())
+            }
+        }
+    }
+}
+
+impl_deserialize_num!(isize, visit_isize);
+impl_deserialize_num!(i8, visit_i8);
+impl_deserialize_num!(i16, visit_i16);
+impl_deserialize_num!(i32, visit_i32);
+impl_deserialize_num!(i64, visit_i64);
+impl_deserialize_num!(usize, visit_usize);
+impl_deserialize_num!(u8, visit_u8);
+impl_deserialize_num!(u16, visit_u16);
+impl_deserialize_num!(u32, visit_u32);
+impl_deserialize_num!(u64, visit_u64);
+impl_deserialize_num!(f32, visit_f32);
+impl_deserialize_num!(f64, visit_f64);
+
+///////////////////////////////////////////////////////////////////////////////
+
+struct CharVisitor;
+
+impl Visitor for CharVisitor {
+    type Value = char;
+
+    #[inline]
+    fn visit_char<E>(&mut self, v: char) -> Result<char, E>
+        where E: Error,
+    {
+        Ok(v)
+    }
+
+    #[inline]
+    fn visit_str<E>(&mut self, v: &str) -> Result<char, E>
+        where E: Error,
+    {
+        let mut iter = v.chars();
+        if let Some(v) = iter.next() {
+            if iter.next().is_some() {
+                Err(Error::syntax("expected a character"))
+            } else {
+                Ok(v)
+            }
+        } else {
+            Err(Error::end_of_stream())
+        }
+    }
+}
+
+impl Deserialize for char {
+    #[inline]
+    fn deserialize<D>(deserializer: &mut D) -> Result<char, D::Error>
+        where D: Deserializer,
+    {
+        deserializer.visit_char(CharVisitor)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+struct StringVisitor;
+
+impl Visitor for StringVisitor {
+    type Value = String;
+
+    fn visit_str<E>(&mut self, v: &str) -> Result<String, E>
+        where E: Error,
+    {
+        Ok(v.to_string())
+    }
+
+    fn visit_string<E>(&mut self, v: String) -> Result<String, E>
+        where E: Error,
+    {
+        Ok(v)
+    }
+
+    fn visit_bytes<E>(&mut self, v: &[u8]) -> Result<String, E>
+        where E: Error,
+    {
+        match str::from_utf8(v) {
+            Ok(s) => Ok(s.to_string()),
+            Err(_) => Err(Error::syntax("expected utf8 `&[u8]`")),
+        }
+    }
+
+    fn visit_byte_buf<'a, E>(&mut self, v: Vec<u8>) -> Result<String, E>
+        where E: Error,
+    {
+        match String::from_utf8(v) {
+            Ok(s) => Ok(s),
+            Err(_) => Err(Error::syntax("expected utf8 `&[u8]`")),
+        }
+    }
+}
+
+impl Deserialize for String {
+    fn deserialize<D>(deserializer: &mut D) -> Result<String, D::Error>
+        where D: Deserializer,
+    {
+        deserializer.visit_string(StringVisitor)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+struct OptionVisitor<T> {
+    marker: PhantomData<T>,
+}
+
+impl<
+    T: Deserialize,
+> Visitor for OptionVisitor<T> {
+    type Value = Option<T>;
+
+    #[inline]
+    fn visit_none<E>(&mut self) -> Result<Option<T>, E>
+        where E: Error,
+    {
+        Ok(None)
+    }
+
+    #[inline]
+    fn visit_some<D>(&mut self, deserializer: &mut D) -> Result<Option<T>, D::Error>
+        where D: Deserializer,
+    {
+        Ok(Some(try!(Deserialize::deserialize(deserializer))))
+    }
+}
+
+impl<T> Deserialize for Option<T> where T: Deserialize {
+    fn deserialize<D>(deserializer: &mut D) -> Result<Option<T>, D::Error>
+        where D: Deserializer,
+    {
+        deserializer.visit_option(OptionVisitor { marker: PhantomData })
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+macro_rules! set_impl {
+    (
+        $ty:ty,
+        < $($constraints:ident),* >,
+        $visitor_name:ident,
+        $visitor:ident,
+        $ctor:expr,
+        $with_capacity:expr,
+        $insert:expr
+    ) => {
+        pub struct $visitor_name<T> {
+            marker: PhantomData<T>,
+        }
+
+        impl<T> $visitor_name<T> {
+            pub fn new() -> Self {
+                $visitor_name {
+                    marker: PhantomData,
+                }
+            }
+        }
+
+        impl<T> Visitor for $visitor_name<T>
+            where T: $($constraints +)*,
+        {
+            type Value = $ty;
+
+            #[inline]
+            fn visit_unit<E>(&mut self) -> Result<$ty, E>
+                where E: Error,
+            {
+                Ok($ctor)
+            }
+
+            #[inline]
+            fn visit_seq<V>(&mut self, mut $visitor: V) -> Result<$ty, V::Error>
+                where V: SeqVisitor,
+            {
+                let mut values = $with_capacity;
+
+                while let Some(value) = try!($visitor.visit()) {
+                    $insert(&mut values, value);
+                }
+
+                try!($visitor.end());
+
+                Ok(values)
+            }
+        }
+
+        impl<T> Deserialize for $ty
+            where T: $($constraints +)*,
+        {
+            fn deserialize<D>(deserializer: &mut D) -> Result<$ty, D::Error>
+                where D: Deserializer,
+            {
+                deserializer.visit_seq($visitor_name::new())
+            }
+        }
+    }
+}
+
+set_impl!(
+    BinaryHeap<T>,
+    <Deserialize, Ord>,
+    BinaryHeapVisitor,
+    visitor,
+    BinaryHeap::new(),
+    BinaryHeap::with_capacity(visitor.size_hint().0),
+    BinaryHeap::push);
+
+set_impl!(
+    BTreeSet<T>,
+    <Deserialize, Eq, Ord>,
+    BTreeSetVisitor,
+    visitor,
+    BTreeSet::new(),
+    BTreeSet::new(),
+    BTreeSet::insert);
+
+#[cfg(feature = "nightly")]
+set_impl!(
+    EnumSet<T>,
+    <Deserialize, CLike>,
+    EnumSetVisitor,
+    visitor,
+    EnumSet::new(),
+    EnumSet::new(),
+    EnumSet::insert);
+
+set_impl!(
+    LinkedList<T>,
+    <Deserialize>,
+    LinkedListVisitor,
+    visitor,
+    LinkedList::new(),
+    LinkedList::new(),
+    LinkedList::push_back);
+
+set_impl!(
+    HashSet<T>,
+    <Deserialize, Eq, Hash>,
+    HashSetVisitor,
+    visitor,
+    HashSet::new(),
+    HashSet::with_capacity(visitor.size_hint().0),
+    HashSet::insert);
+
+set_impl!(
+    Vec<T>,
+    <Deserialize>,
+    VecVisitor,
+    visitor,
+    Vec::new(),
+    Vec::with_capacity(visitor.size_hint().0),
+    Vec::push);
+
+set_impl!(
+    VecDeque<T>,
+    <Deserialize>,
+    VecDequeVisitor,
+    visitor,
+    VecDeque::new(),
+    VecDeque::with_capacity(visitor.size_hint().0),
+    VecDeque::push_back);
+
+///////////////////////////////////////////////////////////////////////////////
+
+struct ArrayVisitor0<T> {
+    marker: PhantomData<T>,
+}
+
+impl<T> ArrayVisitor0<T> {
+    pub fn new() -> Self {
+        ArrayVisitor0 {
+            marker: PhantomData,
+        }
+    }
+}
+
+impl<T> Visitor for ArrayVisitor0<T> where T: Deserialize + Default {
+    type Value = [T; 0];
+
+    #[inline]
+    fn visit_unit<E>(&mut self) -> Result<[T; 0], E>
+        where E: Error,
+    {
+        Ok([T::default(); 0])
+    }
+
+    #[inline]
+    fn visit_seq<V>(&mut self, mut visitor: V) -> Result<[T; 0], V::Error>
+        where V: SeqVisitor,
+    {
+        try!(visitor.end());
+        Ok([T::default(); 0])
+    }
+}
+
+impl<T> Deserialize for [T; 0]
+    where T: Deserialize + Default
+{
+    fn deserialize<D>(deserializer: &mut D) -> Result<[T; 0], D::Error>
+        where D: Deserializer,
+    {
+        deserializer.visit_seq(ArrayVisitor0::new())
+    }
+}
+
+macro_rules! array_impls {
+    ($($visitor:ident, $len:expr => ($($name:ident),+),)+) => {
+        $(
+            struct $visitor<T> {
+                marker: PhantomData<T>,
+            }
+
+            impl<T> $visitor<T> {
+                pub fn new() -> Self {
+                    $visitor {
+                        marker: PhantomData
+                    }
+                }
+            }
+
+            impl<T> Visitor for $visitor<T> where T: Deserialize {
+                type Value = [T; $len];
+
+                #[inline]
+                fn visit_seq<V>(&mut self, mut visitor: V) -> Result<[T; $len], V::Error>
+                    where V: SeqVisitor,
+                {
+                    $(
+                        let $name = match try!(visitor.visit()) {
+                            Some(val) => val,
+                            None => { return Err(Error::end_of_stream()); }
+                        };
+                    )+;
+
+                    try!(visitor.end());
+
+                    Ok([$($name,)+])
+                }
+            }
+
+            impl<T> Deserialize for [T; $len]
+                where T: Deserialize,
+            {
+                fn deserialize<D>(deserializer: &mut D) -> Result<[T; $len], D::Error>
+                    where D: Deserializer,
+                {
+                    deserializer.visit_seq($visitor::new())
+                }
+            }
+        )+
+    }
+}
+
+array_impls! {
+    ArrayVisitor1, 1 => (a),
+    ArrayVisitor2, 2 => (a, b),
+    ArrayVisitor3, 3 => (a, b, c),
+    ArrayVisitor4, 4 => (a, b, c, d),
+    ArrayVisitor5, 5 => (a, b, c, d, e),
+    ArrayVisitor6, 6 => (a, b, c, d, e, f),
+    ArrayVisitor7, 7 => (a, b, c, d, e, f, g),
+    ArrayVisitor8, 8 => (a, b, c, d, e, f, g, h),
+    ArrayVisitor9, 9 => (a, b, c, d, e, f, g, h, i),
+    ArrayVisitor10, 10 => (a, b, c, d, e, f, g, h, i, j),
+    ArrayVisitor11, 11 => (a, b, c, d, e, f, g, h, i, j, k),
+    ArrayVisitor12, 12 => (a, b, c, d, e, f, g, h, i, j, k, l),
+    ArrayVisitor13, 13 => (a, b, c, d, e, f, g, h, i, j, k, l, m),
+    ArrayVisitor14, 14 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n),
+    ArrayVisitor15, 15 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o),
+    ArrayVisitor16, 16 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p),
+    ArrayVisitor17, 17 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q),
+    ArrayVisitor18, 18 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r),
+    ArrayVisitor19, 19 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s),
+    ArrayVisitor20, 20 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s ,t),
+    ArrayVisitor21, 21 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u),
+    ArrayVisitor22, 22 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v),
+    ArrayVisitor23, 23 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w),
+    ArrayVisitor24, 24 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x),
+    ArrayVisitor25, 25 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x,
+                           y),
+    ArrayVisitor26, 26 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x,
+                           y, z),
+    ArrayVisitor27, 27 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x,
+                           y, z, aa),
+    ArrayVisitor28, 28 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x,
+                           y, z, aa, ab),
+    ArrayVisitor29, 29 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x,
+                           y, z, aa, ab, ac),
+    ArrayVisitor30, 30 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x,
+                           y, z, aa, ab, ac, ad),
+    ArrayVisitor31, 31 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x,
+                           y, z, aa, ab, ac, ad, ae),
+    ArrayVisitor32, 32 => (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x,
+                           y, z, aa, ab, ac, ad, ae, af),
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+macro_rules! tuple_impls {
+    () => {};
+    ($($len:expr => $visitor:ident => ($($name:ident),+),)+) => {
+        $(
+            pub struct $visitor<$($name,)+> {
+                marker: PhantomData<($($name,)+)>,
+            }
+
+            impl<
+                $($name: Deserialize,)+
+            > $visitor<$($name,)+> {
+                pub fn new() -> Self {
+                    $visitor { marker: PhantomData }
+                }
+            }
+
+
+            impl<
+                $($name: Deserialize,)+
+            > Visitor for $visitor<$($name,)+> {
+                type Value = ($($name,)+);
+
+                #[inline]
+                #[allow(non_snake_case)]
+                fn visit_seq<V>(&mut self, mut visitor: V) -> Result<($($name,)+), V::Error>
+                    where V: SeqVisitor,
+                {
+                    $(
+                        let $name = match try!(visitor.visit()) {
+                            Some(value) => value,
+                            None => { return Err(Error::end_of_stream()); }
+                        };
+                     )+;
+
+                    try!(visitor.end());
+
+                    Ok(($($name,)+))
+                }
+            }
+
+            impl<
+                $($name: Deserialize),+
+            > Deserialize for ($($name,)+) {
+                #[inline]
+                fn deserialize<D>(deserializer: &mut D) -> Result<($($name,)+), D::Error>
+                    where D: Deserializer,
+                {
+                    deserializer.visit_tuple($len, $visitor::new())
+                }
+            }
+        )+
+    }
+}
+
+tuple_impls! {
+    1 => TupleVisitor1 => (T0),
+    2 => TupleVisitor2 => (T0, T1),
+    3 => TupleVisitor3 => (T0, T1, T2),
+    4 => TupleVisitor4 => (T0, T1, T2, T3),
+    5 => TupleVisitor5 => (T0, T1, T2, T3, T4),
+    6 => TupleVisitor6 => (T0, T1, T2, T3, T4, T5),
+    7 => TupleVisitor7 => (T0, T1, T2, T3, T4, T5, T6),
+    8 => TupleVisitor8 => (T0, T1, T2, T3, T4, T5, T6, T7),
+    9 => TupleVisitor9 => (T0, T1, T2, T3, T4, T5, T6, T7, T8),
+    10 => TupleVisitor10 => (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9),
+    11 => TupleVisitor11 => (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10),
+    12 => TupleVisitor12 => (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11),
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+macro_rules! map_impl {
+    (
+        $ty:ty,
+        < $($constraints:ident),* >,
+        $visitor_name:ident,
+        $visitor:ident,
+        $ctor:expr,
+        $with_capacity:expr,
+        $insert:expr
+    ) => {
+        pub struct $visitor_name<K, V> {
+            marker: PhantomData<$ty>,
+        }
+
+        impl<K, V> $visitor_name<K, V> {
+            pub fn new() -> Self {
+                $visitor_name {
+                    marker: PhantomData,
+                }
+            }
+        }
+
+        impl<K, V> Visitor for $visitor_name<K, V>
+            where K: $($constraints +)*,
+                  V: Deserialize,
+        {
+            type Value = $ty;
+
+            #[inline]
+            fn visit_unit<E>(&mut self) -> Result<$ty, E>
+                where E: Error,
+            {
+                Ok($ctor)
+            }
+
+            #[inline]
+            fn visit_map<Visitor>(&mut self, mut $visitor: Visitor) -> Result<$ty, Visitor::Error>
+                where Visitor: MapVisitor,
+            {
+                let mut values = $with_capacity;
+
+                while let Some((key, value)) = try!($visitor.visit()) {
+                    $insert(&mut values, key, value);
+                }
+
+                try!($visitor.end());
+
+                Ok(values)
+            }
+        }
+
+        impl<K, V> Deserialize for $ty
+            where K: $($constraints +)*,
+                  V: Deserialize,
+        {
+            fn deserialize<D>(deserializer: &mut D) -> Result<$ty, D::Error>
+                where D: Deserializer,
+            {
+                deserializer.visit_map($visitor_name::new())
+            }
+        }
+    }
+}
+
+map_impl!(
+    BTreeMap<K, V>,
+    <Deserialize, Eq, Ord>,
+    BTreeMapVisitor,
+    visitor,
+    BTreeMap::new(),
+    BTreeMap::new(),
+    BTreeMap::insert);
+
+map_impl!(
+    HashMap<K, V>,
+    <Deserialize, Eq, Hash>,
+    HashMapVisitor,
+    visitor,
+    HashMap::new(),
+    HashMap::with_capacity(visitor.size_hint().0),
+    HashMap::insert);
+
+///////////////////////////////////////////////////////////////////////////////
+
+#[cfg(feature = "nightly")]
+pub struct VecMapVisitor<V> {
+    marker: PhantomData<VecMap<V>>,
+}
+
+#[cfg(feature = "nightly")]
+impl<V> VecMapVisitor<V> {
+    #[inline]
+    pub fn new() -> Self {
+        VecMapVisitor {
+            marker: PhantomData,
+        }
+    }
+}
+
+#[cfg(feature = "nightly")]
+impl<V> Visitor for VecMapVisitor<V>
+    where V: Deserialize,
+{
+    type Value = VecMap<V>;
+
+    #[inline]
+    fn visit_unit<E>(&mut self) -> Result<VecMap<V>, E>
+        where E: Error,
+    {
+        Ok(VecMap::new())
+    }
+
+    #[inline]
+    fn visit_map<V_>(&mut self, mut visitor: V_) -> Result<VecMap<V>, V_::Error>
+        where V_: MapVisitor,
+    {
+        let (len, _) = visitor.size_hint();
+        let mut values = VecMap::with_capacity(len);
+
+        while let Some((key, value)) = try!(visitor.visit()) {
+            values.insert(key, value);
+        }
+
+        try!(visitor.end());
+
+        Ok(values)
+    }
+}
+
+#[cfg(feature = "nightly")]
+impl<V> Deserialize for VecMap<V>
+    where V: Deserialize,
+{
+    fn deserialize<D>(deserializer: &mut D) -> Result<VecMap<V>, D::Error>
+        where D: Deserializer,
+    {
+        deserializer.visit_map(VecMapVisitor::new())
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+struct PathBufVisitor;
+
+impl Visitor for PathBufVisitor {
+    type Value = path::PathBuf;
+
+    fn visit_str<E>(&mut self, v: &str) -> Result<path::PathBuf, E>
+        where E: Error,
+    {
+        Ok(From::from(v))
+    }
+
+    fn visit_string<E>(&mut self, v: String) -> Result<path::PathBuf, E>
+        where E: Error,
+    {
+        self.visit_str(&v)
+    }
+}
+
+impl Deserialize for path::PathBuf {
+    fn deserialize<D>(deserializer: &mut D) -> Result<path::PathBuf, D::Error>
+        where D: Deserializer,
+    {
+        deserializer.visit(PathBufVisitor)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+impl<T: Deserialize> Deserialize for Box<T> {
+    fn deserialize<D>(deserializer: &mut D) -> Result<Box<T>, D::Error>
+        where D: Deserializer,
+    {
+        let val = try!(Deserialize::deserialize(deserializer));
+        Ok(Box::new(val))
+    }
+}
+
+impl<T: Deserialize> Deserialize for Arc<T> {
+    fn deserialize<D>(deserializer: &mut D) -> Result<Arc<T>, D::Error>
+        where D: Deserializer,
+    {
+        let val = try!(Deserialize::deserialize(deserializer));
+        Ok(Arc::new(val))
+    }
+}
+
+impl<T: Deserialize> Deserialize for Rc<T> {
+    fn deserialize<D>(deserializer: &mut D) -> Result<Rc<T>, D::Error>
+        where D: Deserializer,
+    {
+        let val = try!(Deserialize::deserialize(deserializer));
+        Ok(Rc::new(val))
+    }
+}
+
+impl<'a, T: ?Sized> Deserialize for Cow<'a, T> where T: ToOwned, T::Owned: Deserialize, {
+    #[inline]
+    fn deserialize<D>(deserializer: &mut D) -> Result<Cow<'a, T>, D::Error>
+        where D: Deserializer,
+    {
+        let val = try!(Deserialize::deserialize(deserializer));
+        Ok(Cow::Owned(val))
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+#[cfg(feature = "nightly")]
+impl<T> Deserialize for NonZero<T> where T: Deserialize + PartialEq + Zeroable + Zero {
+    fn deserialize<D>(deserializer: &mut D) -> Result<NonZero<T>, D::Error> where D: Deserializer {
+        let value = try!(Deserialize::deserialize(deserializer));
+        if value == Zero::zero() {
+            return Err(Error::syntax("expected a non-zero value"))
+        }
+        unsafe {
+            Ok(NonZero::new(value))
+        }
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+impl<T, E> Deserialize for Result<T, E> where T: Deserialize, E: Deserialize {
+    fn deserialize<D>(deserializer: &mut D) -> Result<Result<T, E>, D::Error>
+                      where D: Deserializer {
+        enum Field {
+            Ok,
+            Err,
+        }
+
+        impl Deserialize for Field {
+            #[inline]
+            fn deserialize<D>(deserializer: &mut D) -> Result<Field, D::Error>
+                where D: Deserializer
+            {
+                struct FieldVisitor;
+
+                impl ::de::Visitor for FieldVisitor {
+                    type Value = Field;
+
+                    fn visit_usize<E>(&mut self, value: usize) -> Result<Field, E> where E: Error {
+                        match value {
+                            0 => Ok(Field::Ok),
+                            1 => Ok(Field::Err),
+                            _ => Err(Error::unknown_field(&value.to_string())),
+                        }
+                    }
+
+                    fn visit_str<E>(&mut self, value: &str) -> Result<Field, E> where E: Error {
+                        match value {
+                            "Ok" => Ok(Field::Ok),
+                            "Err" => Ok(Field::Err),
+                            _ => Err(Error::unknown_field(value)),
+                        }
+                    }
+
+                    fn visit_bytes<E>(&mut self, value: &[u8]) -> Result<Field, E> where E: Error {
+                        match value {
+                            b"Ok" => Ok(Field::Ok),
+                            b"Err" => Ok(Field::Err),
+                            _ => {
+                                match str::from_utf8(value) {
+                                    Ok(value) => Err(Error::unknown_field(value)),
+                                    Err(_) => Err(Error::syntax("expected a `&[u8]`")),
+                                }
+                            }
+                        }
+                    }
+                }
+
+                deserializer.visit(FieldVisitor)
+            }
+        }
+
+        struct Visitor<T, E>(PhantomData<Result<T, E>>);
+
+        impl<T, E> EnumVisitor for Visitor<T, E>
+            where T: Deserialize,
+                  E: Deserialize
+        {
+            type Value = Result<T, E>;
+
+            fn visit<V>(&mut self, mut visitor: V) -> Result<Result<T, E>, V::Error>
+                where V: VariantVisitor
+            {
+                match try!(visitor.visit_variant()) {
+                    Field::Ok => {
+                        let value = try!(visitor.visit_newtype());
+                        Ok(Ok(value))
+                    }
+                    Field::Err => {
+                        let value = try!(visitor.visit_newtype());
+                        Ok(Err(value))
+                    }
+                }
+            }
+        }
+
+        const VARIANTS: &'static [&'static str] = &["Ok", "Err"];
+
+        deserializer.visit_enum("Result", VARIANTS, Visitor(PhantomData))
+    }
+}

serde/src/de/mod.rs

@@ -0,0 +1,680 @@
+//! Generic deserialization framework.
+
+pub mod impls;
+pub mod value;
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub trait Error {
+    fn syntax(msg: &str) -> Self;
+
+    fn end_of_stream() -> Self;
+
+    fn unknown_field(field: &str) -> Self;
+
+    fn missing_field(field: &'static str) -> Self;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub trait Deserialize {
+    /// Deserialize this value given this `Deserializer`.
+    fn deserialize<D>(deserializer: &mut D) -> Result<Self, D::Error>
+        where D: Deserializer;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+/// `Deserializer` is a trait that can deserialize values by threading a `Visitor` trait through a
+/// value. It supports two entry point styles which enables different kinds of deserialization.
+///
+/// 1) The `visit` method. File formats like JSON embed the type of it's construct in it's file
+///    format. This allows the `Deserializer` to deserialize into a generic type like
+///    `json::Value`, which can represent all JSON types.
+///
+/// 2) The `visit_*` methods. File formats like bincode do not embed in it's format how to decode
+///    it's values. It relies instead on the `Deserialize` type to hint to the `Deserializer` with
+///    the `visit_*` methods how it should parse the next value. One downside though to only
+///    supporting the `visit_*` types is that it does not allow for deserializing into a generic
+///    `json::Value`-esque type.
+pub trait Deserializer {
+    type Error: Error;
+
+    /// This method walks a visitor through a value as it is being deserialized.
+    fn visit<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor;
+
+    /// This method hints that the `Deserialize` type is expecting a `bool` value.
+    #[inline]
+    fn visit_bool<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `usize` value.
+    #[inline]
+    fn visit_usize<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `u8` value.
+    #[inline]
+    fn visit_u8<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `u16` value.
+    #[inline]
+    fn visit_u16<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `u32` value.
+    #[inline]
+    fn visit_u32<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `u64` value.
+    #[inline]
+    fn visit_u64<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `isize` value.
+    #[inline]
+    fn visit_isize<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `i8` value.
+    #[inline]
+    fn visit_i8<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `i16` value.
+    #[inline]
+    fn visit_i16<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `i32` value.
+    #[inline]
+    fn visit_i32<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `i64` value.
+    #[inline]
+    fn visit_i64<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a `f32` value.
+    #[inline]
+    fn visit_f32<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a `f64` value.
+    #[inline]
+    fn visit_f64<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a `char` value.
+    #[inline]
+    fn visit_char<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a `&str` value.
+    #[inline]
+    fn visit_str<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a `String` value.
+    #[inline]
+    fn visit_string<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit_str(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `unit` value.
+    #[inline]
+    fn visit_unit<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an `Option` value. This allows
+    /// deserializers that encode an optional value as a nullable value to convert the null value
+    /// into a `None`, and a regular value as `Some(value)`.
+    #[inline]
+    fn visit_option<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a sequence value. This allows
+    /// deserializers to parse sequences that aren't tagged as sequences.
+    #[inline]
+    fn visit_seq<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a map of values. This allows
+    /// deserializers to parse sequences that aren't tagged as maps.
+    #[inline]
+    fn visit_map<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a unit struct. This allows
+    /// deserializers to a unit struct that aren't tagged as a unit struct.
+    #[inline]
+    fn visit_unit_struct<V>(&mut self,
+                            _name: &'static str,
+                            visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit_unit(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a newtype struct. This allows
+    /// deserializers to a newtype struct that aren't tagged as a newtype struct.
+    #[inline]
+    fn visit_newtype_struct<V>(&mut self,
+                               name: &'static str,
+                               visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit_tuple_struct(name, 1, visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a tuple struct. This allows
+    /// deserializers to parse sequences that aren't tagged as sequences.
+    #[inline]
+    fn visit_tuple_struct<V>(&mut self,
+                             _name: &'static str,
+                             len: usize,
+                             visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit_tuple(len, visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a struct. This allows
+    /// deserializers to parse sequences that aren't tagged as maps.
+    #[inline]
+    fn visit_struct<V>(&mut self,
+                       _name: &'static str,
+                       _fields: &'static [&'static str],
+                       visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit_map(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a tuple value. This allows
+    /// deserializers that provide a custom tuple serialization to properly deserialize the type.
+    #[inline]
+    fn visit_tuple<V>(&mut self, _len: usize, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit_seq(visitor)
+    }
+
+    /// This method hints that the `Deserialize` type is expecting an enum value. This allows
+    /// deserializers that provide a custom enumeration serialization to properly deserialize the
+    /// type.
+    #[inline]
+    fn visit_enum<V>(&mut self,
+                     _enum: &'static str,
+                     _variants: &'static [&'static str],
+                     _visitor: V) -> Result<V::Value, Self::Error>
+        where V: EnumVisitor,
+    {
+        Err(Error::syntax("expected an enum"))
+    }
+
+    /// This method hints that the `Deserialize` type is expecting a `Vec<u8>`. This allows
+    /// deserializers that provide a custom byte vector serialization to properly deserialize the
+    /// type.
+    #[inline]
+    fn visit_bytes<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor,
+    {
+        self.visit_seq(visitor)
+    }
+
+    /// Specify a format string for the deserializer.
+    ///
+    /// The deserializer format is used to determine which format
+    /// specific field attributes should be used with the
+    /// deserializer.
+    fn format() -> &'static str {
+        ""
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub trait Visitor {
+    type Value: Deserialize;
+
+    fn visit_bool<E>(&mut self, _v: bool) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        Err(Error::syntax("expected a bool"))
+    }
+
+    fn visit_isize<E>(&mut self, v: isize) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_i64(v as i64)
+    }
+
+    fn visit_i8<E>(&mut self, v: i8) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_i64(v as i64)
+    }
+
+    fn visit_i16<E>(&mut self, v: i16) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_i64(v as i64)
+    }
+
+    fn visit_i32<E>(&mut self, v: i32) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_i64(v as i64)
+    }
+
+    fn visit_i64<E>(&mut self, _v: i64) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        Err(Error::syntax("expected a i64"))
+    }
+
+    fn visit_usize<E>(&mut self, v: usize) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_u64(v as u64)
+    }
+
+    fn visit_u8<E>(&mut self, v: u8) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_u64(v as u64)
+    }
+
+    fn visit_u16<E>(&mut self, v: u16) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_u64(v as u64)
+    }
+
+    fn visit_u32<E>(&mut self, v: u32) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_u64(v as u64)
+    }
+
+    fn visit_u64<E>(&mut self, _v: u64) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        Err(Error::syntax("expected a u64"))
+    }
+
+    fn visit_f32<E>(&mut self, v: f32) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_f64(v as f64)
+    }
+
+    fn visit_f64<E>(&mut self, _v: f64) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        Err(Error::syntax("expected a f64"))
+    }
+
+    #[inline]
+    fn visit_char<E>(&mut self, v: char) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        // FIXME: this allocation is required in order to be compatible with stable rust, which
+        // doesn't support encoding a `char` into a stack buffer.
+        self.visit_string(v.to_string())
+    }
+
+    fn visit_str<E>(&mut self, _v: &str) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        Err(Error::syntax("expected a str"))
+    }
+
+    #[inline]
+    fn visit_string<E>(&mut self, v: String) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_str(&v)
+    }
+
+    fn visit_unit<E>(&mut self) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        Err(Error::syntax("expected a unit"))
+    }
+
+    #[inline]
+    fn visit_unit_struct<E>(&mut self, _name: &'static str) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_unit()
+    }
+
+    fn visit_none<E>(&mut self) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        Err(Error::syntax("expected an Option::None"))
+    }
+
+    fn visit_some<D>(&mut self, _deserializer: &mut D) -> Result<Self::Value, D::Error>
+        where D: Deserializer,
+    {
+        Err(Error::syntax("expected an Option::Some"))
+    }
+
+    fn visit_newtype_struct<D>(&mut self, _deserializer: &mut D) -> Result<Self::Value, D::Error>
+        where D: Deserializer,
+    {
+        Err(Error::syntax("expected a newtype struct"))
+    }
+
+    fn visit_seq<V>(&mut self, _visitor: V) -> Result<Self::Value, V::Error>
+        where V: SeqVisitor,
+    {
+        Err(Error::syntax("expected a sequence"))
+    }
+
+    fn visit_map<V>(&mut self, _visitor: V) -> Result<Self::Value, V::Error>
+        where V: MapVisitor,
+    {
+        Err(Error::syntax("expected a map"))
+    }
+
+    fn visit_bytes<E>(&mut self, _v: &[u8]) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        Err(Error::syntax("expected a &[u8]"))
+    }
+
+    fn visit_byte_buf<E>(&mut self, v: Vec<u8>) -> Result<Self::Value, E>
+        where E: Error,
+    {
+        self.visit_bytes(&v)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub trait SeqVisitor {
+    type Error: Error;
+
+    fn visit<T>(&mut self) -> Result<Option<T>, Self::Error>
+        where T: Deserialize;
+
+    fn end(&mut self) -> Result<(), Self::Error>;
+
+    #[inline]
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (0, None)
+    }
+}
+
+impl<'a, V> SeqVisitor for &'a mut V where V: SeqVisitor {
+    type Error = V::Error;
+
+    #[inline]
+    fn visit<T>(&mut self) -> Result<Option<T>, V::Error>
+        where T: Deserialize
+    {
+        (**self).visit()
+    }
+
+    #[inline]
+    fn end(&mut self) -> Result<(), V::Error> {
+        (**self).end()
+    }
+
+    #[inline]
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (**self).size_hint()
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub trait MapVisitor {
+    type Error: Error;
+
+    #[inline]
+    fn visit<K, V>(&mut self) -> Result<Option<(K, V)>, Self::Error>
+        where K: Deserialize,
+              V: Deserialize,
+    {
+        match try!(self.visit_key()) {
+            Some(key) => {
+                let value = try!(self.visit_value());
+                Ok(Some((key, value)))
+            }
+            None => Ok(None)
+        }
+    }
+
+    fn visit_key<K>(&mut self) -> Result<Option<K>, Self::Error>
+        where K: Deserialize;
+
+    fn visit_value<V>(&mut self) -> Result<V, Self::Error>
+        where V: Deserialize;
+
+    fn end(&mut self) -> Result<(), Self::Error>;
+
+    #[inline]
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (0, None)
+    }
+
+    fn missing_field<V>(&mut self, field: &'static str) -> Result<V, Self::Error>
+        where V: Deserialize,
+    {
+        Err(Error::missing_field(field))
+    }
+}
+
+impl<'a, V_> MapVisitor for &'a mut V_ where V_: MapVisitor {
+    type Error = V_::Error;
+
+    #[inline]
+    fn visit<K, V>(&mut self) -> Result<Option<(K, V)>, V_::Error>
+        where K: Deserialize,
+              V: Deserialize,
+    {
+        (**self).visit()
+    }
+
+    #[inline]
+    fn visit_key<K>(&mut self) -> Result<Option<K>, V_::Error>
+        where K: Deserialize
+    {
+        (**self).visit_key()
+    }
+
+    #[inline]
+    fn visit_value<V>(&mut self) -> Result<V, V_::Error>
+        where V: Deserialize
+    {
+        (**self).visit_value()
+    }
+
+    #[inline]
+    fn end(&mut self) -> Result<(), V_::Error> {
+        (**self).end()
+    }
+
+    #[inline]
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (**self).size_hint()
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+/// `EnumVisitor` is a visitor that is created by the `Deserialize` and passed to the
+/// `Deserializer` in order to deserialize enums.
+pub trait EnumVisitor {
+    type Value;
+
+    fn visit<V>(&mut self, visitor: V) -> Result<Self::Value, V::Error>
+        where V: VariantVisitor;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+/// `VariantVisitor` is a visitor that is created by the `Deserializer` and passed to the
+/// `Deserialize` in order to deserialize a specific enum variant.
+pub trait VariantVisitor {
+    type Error: Error;
+
+    /// `visit_variant` is called to identify which variant to deserialize.
+    fn visit_variant<V>(&mut self) -> Result<V, Self::Error>
+        where V: Deserialize;
+
+    /// `visit_unit` is called when deserializing a variant with no values.
+    fn visit_unit(&mut self) -> Result<(), Self::Error> {
+        Err(Error::syntax("expected a univ variant"))
+    }
+
+    /// `visit_newtype` is called when deserializing a variant with a single value. By default this
+    /// uses the `visit_tuple` method to deserialize the value.
+    #[inline]
+    fn visit_newtype<T>(&mut self) -> Result<T, Self::Error>
+        where T: Deserialize,
+    {
+        let (value,) = try!(self.visit_tuple(1, impls::TupleVisitor1::new()));
+        Ok(value)
+    }
+
+    /// `visit_tuple` is called when deserializing a tuple-like variant.
+    fn visit_tuple<V>(&mut self,
+                      _len: usize,
+                      _visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor
+    {
+        Err(Error::syntax("expected a tuple variant"))
+    }
+
+    /// `visit_struct` is called when deserializing a struct-like variant.
+    fn visit_struct<V>(&mut self,
+                       _fields: &'static [&'static str],
+                       _visitor: V) -> Result<V::Value, Self::Error>
+        where V: Visitor
+    {
+        Err(Error::syntax("expected a struct variant"))
+    }
+}
+
+impl<'a, T> VariantVisitor for &'a mut T where T: VariantVisitor {
+    type Error = T::Error;
+
+    fn visit_variant<V>(&mut self) -> Result<V, T::Error>
+        where V: Deserialize
+    {
+        (**self).visit_variant()
+    }
+
+    fn visit_unit(&mut self) -> Result<(), T::Error> {
+        (**self).visit_unit()
+    }
+
+    fn visit_newtype<D>(&mut self) -> Result<D, T::Error>
+        where D: Deserialize,
+    {
+        (**self).visit_newtype()
+    }
+
+    fn visit_tuple<V>(&mut self,
+                      len: usize,
+                      visitor: V) -> Result<V::Value, T::Error>
+        where V: Visitor,
+    {
+        (**self).visit_tuple(len, visitor)
+    }
+
+    fn visit_struct<V>(&mut self,
+                    fields: &'static [&'static str],
+                    visitor: V) -> Result<V::Value, T::Error>
+        where V: Visitor,
+    {
+        (**self).visit_struct(fields, visitor)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub trait EnumSeqVisitor {
+    type Value;
+
+    fn visit<V>(&mut self, visitor: V) -> Result<Self::Value, V::Error>
+        where V: SeqVisitor;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+pub trait EnumMapVisitor {
+    type Value;
+
+    fn visit<V>(&mut self, visitor: V) -> Result<Self::Value, V::Error>
+        where V: MapVisitor;
+}

serde/src/de/value.rs

@@ -12,6 +12,7 @@ use std::hash::Hash;
 use std::vec;
 
 use de;
+use bytes;
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -23,10 +24,10 @@ pub enum Error {
 }
 
 impl de::Error for Error {
-    fn syntax_error() -> Self { Error::SyntaxError }
-    fn end_of_stream_error() -> Self { Error::EndOfStreamError }
-    fn unknown_field_error(field: &str) -> Self { Error::UnknownFieldError(field.to_string()) }
-    fn missing_field_error(field: &'static str) -> Self { Error::MissingFieldError(field) }
+    fn syntax(_: &str) -> Self { Error::SyntaxError }
+    fn end_of_stream() -> Self { Error::EndOfStreamError }
+    fn unknown_field(field: &str) -> Self { Error::UnknownFieldError(String::from(field)) }
+    fn missing_field(field: &'static str) -> Self { Error::MissingFieldError(field) }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -88,7 +89,7 @@ macro_rules! primitive_deserializer {
             {
                 match self.0.take() {
                     Some(v) => visitor.$method(v),
-                    None => Err(de::Error::end_of_stream_error()),
+                    None => Err(de::Error::end_of_stream()),
                 }
             }
         }
@@ -131,11 +132,14 @@ impl<'a> de::Deserializer for StrDeserializer<'a> {
     {
         match self.0.take() {
             Some(v) => visitor.visit_str(v),
-            None => Err(de::Error::end_of_stream_error()),
+            None => Err(de::Error::end_of_stream()),
         }
     }
 
-    fn visit_enum<V>(&mut self, _name: &str, mut visitor: V) -> Result<V::Value, Error>
+    fn visit_enum<V>(&mut self,
+                     _name: &str,
+                     _variants: &'static [&'static str],
+                     mut visitor: V) -> Result<V::Value, Error>
         where V: de::EnumVisitor,
     {
         visitor.visit(self)
@@ -177,11 +181,14 @@ impl de::Deserializer for StringDeserializer {
     {
         match self.0.take() {
             Some(string) => visitor.visit_string(string),
-            None => Err(de::Error::end_of_stream_error()),
+            None => Err(de::Error::end_of_stream()),
         }
     }
 
-    fn visit_enum<V>(&mut self, _name: &str, mut visitor: V) -> Result<V::Value, Error>
+    fn visit_enum<V>(&mut self,
+                     _name: &str,
+                     _variants: &'static [&'static str],
+                     mut visitor: V) -> Result<V::Value, Error>
         where V: de::EnumVisitor,
     {
         visitor.visit(self)
@@ -254,7 +261,7 @@ impl<I, T> de::SeqVisitor for SeqDeserializer<I>
         if self.len == 0 {
             Ok(())
         } else {
-            Err(de::Error::end_of_stream_error())
+            Err(de::Error::end_of_stream())
         }
     }
 
@@ -367,7 +374,7 @@ impl<I, K, V> de::MapVisitor for MapDeserializer<I, K, V>
                 let mut de = value.into_deserializer();
                 de::Deserialize::deserialize(&mut de)
             }
-            None => Err(de::Error::syntax_error())
+            None => Err(de::Error::syntax("expected a map value"))
         }
     }
 
@@ -375,7 +382,7 @@ impl<I, K, V> de::MapVisitor for MapDeserializer<I, K, V>
         if self.len == 0 {
             Ok(())
         } else {
-            Err(de::Error::end_of_stream_error())
+            Err(de::Error::end_of_stream())
         }
     }
 
@@ -409,3 +416,56 @@ impl<K, V> ValueDeserializer for HashMap<K, V>
         MapDeserializer::new(self.into_iter(), len)
     }
 }
+
+///////////////////////////////////////////////////////////////////////////////
+
+impl<'a> ValueDeserializer for bytes::Bytes<'a>
+{
+    type Deserializer = BytesDeserializer<'a>;
+
+    fn into_deserializer(self) -> BytesDeserializer<'a> {
+        BytesDeserializer(Some(self.into()))
+    }
+}
+
+pub struct BytesDeserializer<'a> (Option<&'a [u8]>);
+
+impl<'a> de::Deserializer for BytesDeserializer<'a> {
+    type Error = Error;
+
+    fn visit<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        match self.0.take() {
+            Some(bytes) => visitor.visit_bytes(bytes),
+            None => Err(de::Error::end_of_stream()),
+        }
+    }
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+impl ValueDeserializer for bytes::ByteBuf
+{
+    type Deserializer = ByteBufDeserializer;
+
+    fn into_deserializer(self) -> Self::Deserializer {
+        ByteBufDeserializer(Some(self.into()))
+    }
+}
+
+pub struct ByteBufDeserializer(Option<Vec<u8>>);
+
+impl de::Deserializer for ByteBufDeserializer {
+    type Error = Error;
+
+    fn visit<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        match self.0.take() {
+            Some(bytes) => visitor.visit_byte_buf(bytes),
+            None => Err(de::Error::end_of_stream()),
+        }
+    }
+}

serde/src/iter.rs

@@ -1,4 +1,5 @@
 use std::io;
+use std::iter::Peekable;
 
 pub struct LineColIterator<Iter: Iterator<Item=io::Result<u8>>> {
     iter: Iter,
@@ -25,12 +26,17 @@ impl<Iter: Iterator<Item=io::Result<u8>>> LineColIterator<Iter> {
     pub fn get_ref(&self) -> &Iter { &self.iter }
 
     /// Gets a mutable reference to the underlying iterator.
-    pub fn get_mut(&self) -> &Iter { &self.iter }
+    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>> {

serde/src/lib.rs

@@ -5,15 +5,21 @@
 //! 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")]
+#![doc(html_root_url="https://serde-rs.github.io/serde/serde")]
+#![cfg_attr(feature = "nightly", feature(collections, core, enumset, nonzero, step_trait, vecmap, zero_one))]
 
 extern crate num;
 
+#[cfg(feature = "nightly")]
+extern crate collections;
+
+#[cfg(feature = "nightly")]
+extern crate core;
+
 pub use ser::{Serialize, Serializer};
 pub use de::{Deserialize, Deserializer, Error};
 
 pub mod bytes;
 pub mod de;
 pub mod iter;
-pub mod json;
 pub mod ser;

serde/src/ser/impls.rs

@@ -1,9 +1,31 @@
-use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
+use std::borrow::Cow;
+use std::collections::{
+    BinaryHeap,
+    BTreeMap,
+    BTreeSet,
+    LinkedList,
+    HashMap,
+    HashSet,
+    VecDeque,
+};
+#[cfg(feature = "nightly")]
+use collections::enum_set::{CLike, EnumSet};
+#[cfg(feature = "nightly")]
+use std::collections::vec_map::VecMap;
 use std::hash::Hash;
+#[cfg(feature = "nightly")]
+use std::iter;
+#[cfg(feature = "nightly")]
+use std::num;
+#[cfg(feature = "nightly")]
+use std::ops;
 use std::path;
 use std::rc::Rc;
 use std::sync::Arc;
 
+#[cfg(feature = "nightly")]
+use core::nonzero::{NonZero, Zeroable};
+
 use super::{
     Serialize,
     Serializer,
@@ -75,6 +97,26 @@ impl<T> Serialize for Option<T> where T: Serialize {
     }
 }
 
+impl<T> SeqVisitor for Option<T> where T: Serialize {
+    #[inline]
+    fn visit<S>(&mut self, serializer: &mut S) -> Result<Option<()>, S::Error>
+        where S: Serializer,
+    {
+        match self.take() {
+            Some(value) => {
+                try!(serializer.visit_seq_elt(value));
+                Ok(Some(()))
+            }
+            None => Ok(None),
+        }
+    }
+
+    #[inline]
+    fn len(&self) -> Option<usize> {
+        Some(if self.is_some() { 1 } else { 0 })
+    }
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 pub struct SeqIteratorVisitor<Iter> {
@@ -104,8 +146,8 @@ impl<T, Iter> SeqVisitor for SeqIteratorVisitor<Iter>
     {
         match self.iter.next() {
             Some(value) => {
-                let value = try!(serializer.visit_seq_elt(value));
-                Ok(Some(value))
+                try!(serializer.visit_seq_elt(value));
+                Ok(Some(()))
             }
             None => Ok(None),
         }
@@ -119,7 +161,7 @@ impl<T, Iter> SeqVisitor for SeqIteratorVisitor<Iter>
 
 ///////////////////////////////////////////////////////////////////////////////
 
-impl<'a, T> Serialize for &'a [T]
+impl<T> Serialize for [T]
     where T: Serialize,
 {
     #[inline]
@@ -130,12 +172,63 @@ impl<'a, T> Serialize for &'a [T]
     }
 }
 
-impl<T> Serialize for Vec<T> where T: Serialize {
+macro_rules! array_impls {
+    ($len:expr) => {
+        impl<T> Serialize for [T; $len] where T: Serialize {
+            #[inline]
+            fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+                where S: Serializer,
+            {
+                serializer.visit_seq(SeqIteratorVisitor::new(self.iter(), Some($len)))
+            }
+        }
+    }
+}
+
+array_impls!(0);
+array_impls!(1);
+array_impls!(2);
+array_impls!(3);
+array_impls!(4);
+array_impls!(5);
+array_impls!(6);
+array_impls!(7);
+array_impls!(8);
+array_impls!(9);
+array_impls!(10);
+array_impls!(11);
+array_impls!(12);
+array_impls!(13);
+array_impls!(14);
+array_impls!(15);
+array_impls!(16);
+array_impls!(17);
+array_impls!(18);
+array_impls!(19);
+array_impls!(20);
+array_impls!(21);
+array_impls!(22);
+array_impls!(23);
+array_impls!(24);
+array_impls!(25);
+array_impls!(26);
+array_impls!(27);
+array_impls!(28);
+array_impls!(29);
+array_impls!(30);
+array_impls!(31);
+array_impls!(32);
+
+///////////////////////////////////////////////////////////////////////////////
+
+impl<T> Serialize for BinaryHeap<T>
+    where T: Serialize + Ord
+{
     #[inline]
     fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
         where S: Serializer,
     {
-        (&self[..]).serialize(serializer)
+        serializer.visit_seq(SeqIteratorVisitor::new(self.iter(), Some(self.len())))
     }
 }
 
@@ -150,6 +243,18 @@ impl<T> Serialize for BTreeSet<T>
     }
 }
 
+#[cfg(feature = "nightly")]
+impl<T> Serialize for EnumSet<T>
+    where T: Serialize + CLike
+{
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: Serializer,
+    {
+        serializer.visit_seq(SeqIteratorVisitor::new(self.iter(), Some(self.len())))
+    }
+}
+
 impl<T> Serialize for HashSet<T>
     where T: Serialize + Eq + Hash,
 {
@@ -161,6 +266,49 @@ impl<T> Serialize for HashSet<T>
     }
 }
 
+impl<T> Serialize for LinkedList<T>
+    where T: Serialize,
+{
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: Serializer,
+    {
+        serializer.visit_seq(SeqIteratorVisitor::new(self.iter(), Some(self.len())))
+    }
+}
+
+#[cfg(feature = "nightly")]
+impl<A> Serialize for ops::Range<A>
+    where A: Serialize + Clone + iter::Step + num::One,
+          for<'a> &'a A: ops::Add<&'a A, Output = A>,
+{
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: Serializer,
+    {
+        let len = iter::Step::steps_between(&self.start, &self.end, &A::one());
+        serializer.visit_seq(SeqIteratorVisitor::new(self.clone(), len))
+    }
+}
+
+impl<T> Serialize for Vec<T> where T: Serialize {
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: Serializer,
+    {
+        (&self[..]).serialize(serializer)
+    }
+}
+
+impl<T> Serialize for VecDeque<T> where T: Serialize {
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: Serializer,
+    {
+        serializer.visit_seq(SeqIteratorVisitor::new(self.iter(), Some(self.len())))
+    }
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 impl Serialize for () {
@@ -210,7 +358,7 @@ macro_rules! tuple_impls {
                         $(
                             $state => {
                                 self.state += 1;
-                                Ok(Some(try!(serializer.visit_seq_elt(&e!(self.tuple.$idx)))))
+                                Ok(Some(try!(serializer.visit_tuple_elt(&e!(self.tuple.$idx)))))
                             }
                         )+
                         _ => {
@@ -229,7 +377,7 @@ macro_rules! tuple_impls {
             {
                 #[inline]
                 fn serialize<S: Serializer>(&self, serializer: &mut S) -> Result<(), S::Error> {
-                    serializer.visit_seq($TupleVisitor::new(self))
+                    serializer.visit_tuple($TupleVisitor::new(self))
                 }
             }
         )+
@@ -410,8 +558,7 @@ impl<K, V> Serialize for HashMap<K, V>
     }
 }
 
-// FIXME: `VecMap` is unstable.
-/*
+#[cfg(feature = "nightly")]
 impl<V> Serialize for VecMap<V>
     where V: Serialize,
 {
@@ -422,7 +569,6 @@ impl<V> Serialize for VecMap<V>
         serializer.visit_map(MapIteratorVisitor::new(self.iter(), Some(self.len())))
     }
 }
-*/
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -471,6 +617,30 @@ impl<T> Serialize for Arc<T> where T: Serialize, {
     }
 }
 
+impl<'a, T: ?Sized> Serialize for Cow<'a, T> where T: Serialize + ToOwned, {
+    #[inline]
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+        where S: Serializer,
+    {
+        (**self).serialize(serializer)
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+impl<T, E> Serialize for Result<T, E> where T: Serialize, E: Serialize {
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error> where S: Serializer {
+        match *self {
+            Result::Ok(ref value) => {
+                serializer.visit_newtype_variant("Result", 0, "Ok", value)
+            }
+            Result::Err(ref value) => {
+                serializer.visit_newtype_variant("Result", 1, "Err", value)
+            }
+        }
+    }
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 impl Serialize for path::Path {
@@ -488,3 +658,10 @@ impl Serialize for path::PathBuf {
         self.to_str().unwrap().serialize(serializer)
     }
 }
+
+#[cfg(feature = "nightly")]
+impl<T> Serialize for NonZero<T> where T: Serialize + Zeroable {
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error> where S: Serializer {
+        (**self).serialize(serializer)
+    }
+}

serde/src/ser/mod.rs

@@ -104,7 +104,7 @@ pub trait Serializer {
     fn visit_str(&mut self, value: &str) -> Result<(), Self::Error>;
 
     /// `visit_bytes` is a hook that enables those serialization formats that support serializing
-    /// byte slices separately from generic arrays. By default it serializes as a regular array. 
+    /// byte slices separately from generic arrays. By default it serializes as a regular array.
     #[inline]
     fn visit_bytes(&mut self, value: &[u8]) -> Result<(), Self::Error> {
         self.visit_seq(impls::SeqIteratorVisitor::new(value.iter(), Some(value.len())))
@@ -113,17 +113,48 @@ pub trait Serializer {
     fn visit_unit(&mut self) -> Result<(), Self::Error>;
 
     #[inline]
-    fn visit_named_unit(&mut self, _name: &str) -> Result<(), Self::Error> {
+    fn visit_unit_struct(&mut self, _name: &'static str) -> Result<(), Self::Error> {
         self.visit_unit()
     }
 
     #[inline]
-    fn visit_enum_unit(&mut self,
-                       _name: &str,
-                       _variant: &str) -> Result<(), Self::Error> {
+    fn visit_unit_variant(&mut self,
+                          _name: &'static str,
+                          _variant_index: usize,
+                          _variant: &'static str) -> Result<(), Self::Error> {
         self.visit_unit()
     }
 
+    /// The `visit_newtype_struct` allows a tuple struct with a single element, also known as a
+    /// newtyped value, to be more efficiently serialized than a tuple struct with multiple items.
+    /// By default it just serializes the value as a tuple struct sequence.
+    #[inline]
+    fn visit_newtype_struct<T>(&mut self,
+                               name: &'static str,
+                               value: T) -> Result<(), Self::Error>
+        where T: Serialize,
+    {
+        self.visit_tuple_struct(name, Some(value))
+    }
+
+    /// The `visit_newtype_variant` allows a variant with a single item to be more efficiently
+    /// serialized than a variant with multiple items. By default it just serializes the value as a
+    /// tuple variant sequence.
+    #[inline]
+    fn visit_newtype_variant<T>(&mut self,
+                                name: &'static str,
+                                variant_index: usize,
+                                variant: &'static str,
+                                value: T) -> Result<(), Self::Error>
+        where T: Serialize,
+    {
+        self.visit_tuple_variant(
+            name,
+            variant_index,
+            variant,
+            Some(value))
+    }
+
     fn visit_none(&mut self) -> Result<(), Self::Error>;
 
     fn visit_some<V>(&mut self, value: V) -> Result<(), Self::Error>
@@ -132,53 +163,109 @@ pub trait Serializer {
     fn visit_seq<V>(&mut self, visitor: V) -> Result<(), Self::Error>
         where V: SeqVisitor;
 
-    #[inline]
-    fn visit_named_seq<V>(&mut self,
-                          _name: &'static str,
-                          visitor: V) -> Result<(), Self::Error>
-        where V: SeqVisitor,
-    {
-        self.visit_seq(visitor)
-    }
-
-    #[inline]
-    fn visit_enum_seq<V>(&mut self,
-                         _name: &'static str,
-                         _variant: &'static str,
-                         visitor: V) -> Result<(), Self::Error>
-        where V: SeqVisitor,
-    {
-        self.visit_seq(visitor)
-    }
-
     fn visit_seq_elt<T>(&mut self, value: T) -> Result<(), Self::Error>
         where T: Serialize;
 
+    #[inline]
+    fn visit_tuple<V>(&mut self, visitor: V) -> Result<(), Self::Error>
+        where V: SeqVisitor,
+    {
+        self.visit_seq(visitor)
+    }
+
+    #[inline]
+    fn visit_tuple_elt<T>(&mut self, value: T) -> Result<(), Self::Error>
+        where T: Serialize
+    {
+        self.visit_seq_elt(value)
+    }
+
+    #[inline]
+    fn visit_tuple_struct<V>(&mut self,
+                             _name: &'static str,
+                             visitor: V) -> Result<(), Self::Error>
+        where V: SeqVisitor,
+    {
+        self.visit_tuple(visitor)
+    }
+
+    #[inline]
+    fn visit_tuple_struct_elt<T>(&mut self, value: T) -> Result<(), Self::Error>
+        where T: Serialize
+    {
+        self.visit_tuple_elt(value)
+    }
+
+    #[inline]
+    fn visit_tuple_variant<V>(&mut self,
+                              _name: &'static str,
+                              _variant_index: usize,
+                              variant: &'static str,
+                              visitor: V) -> Result<(), Self::Error>
+        where V: SeqVisitor,
+    {
+        self.visit_tuple_struct(variant, visitor)
+    }
+
+    #[inline]
+    fn visit_tuple_variant_elt<T>(&mut self, value: T) -> Result<(), Self::Error>
+        where T: Serialize
+    {
+        self.visit_tuple_struct_elt(value)
+    }
+
     fn visit_map<V>(&mut self, visitor: V) -> Result<(), Self::Error>
         where V: MapVisitor;
 
-    #[inline]
-    fn visit_named_map<V>(&mut self,
-                          _name: &'static str,
-                          visitor: V) -> Result<(), Self::Error>
-        where V: MapVisitor,
-    {
-        self.visit_map(visitor)
-    }
-
-    #[inline]
-    fn visit_enum_map<V>(&mut self,
-                          _name: &'static str,
-                          _variant: &'static str,
-                          visitor: V) -> Result<(), Self::Error>
-        where V: MapVisitor,
-    {
-        self.visit_map(visitor)
-    }
-
     fn visit_map_elt<K, V>(&mut self, key: K, value: V) -> Result<(), Self::Error>
         where K: Serialize,
               V: Serialize;
+
+    #[inline]
+    fn visit_struct<V>(&mut self,
+                       _name: &'static str,
+                       visitor: V) -> Result<(), Self::Error>
+        where V: MapVisitor,
+    {
+        self.visit_map(visitor)
+    }
+
+    #[inline]
+    fn visit_struct_elt<V>(&mut self,
+                           key: &'static str,
+                           value: V) -> Result<(), Self::Error>
+        where V: Serialize,
+    {
+        self.visit_map_elt(key, value)
+    }
+
+    #[inline]
+    fn visit_struct_variant<V>(&mut self,
+                               _name: &'static str,
+                               _variant_index: usize,
+                               variant: &'static str,
+                               visitor: V) -> Result<(), Self::Error>
+        where V: MapVisitor,
+    {
+        self.visit_struct(variant, visitor)
+    }
+
+    #[inline]
+    fn visit_struct_variant_elt<V>(&mut self,
+                                   key: &'static str,
+                                   value: V) -> Result<(), Self::Error>
+        where V: Serialize,
+    {
+        self.visit_struct_elt(key, value)
+    }
+
+    /// Specify a format string for the serializer.
+    ///
+    /// The serializer format is used to determine which format
+    /// specific field attributes should be used with the serializer.
+    fn format() -> &'static str {
+        ""
+    }
 }
 
 pub trait SeqVisitor {

serde_codegen/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "serde_codegen"
+version = "0.5.0"
+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/serde-rs/serde"
+build = "build.rs"
+
+[features]
+default = ["with-syntex"]
+nightly = ["quasi_macros"]
+with-syntex = ["quasi/with-syntex", "quasi_codegen", "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 +1,120 @@
+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 {
+    skip_serializing_field: bool,
+    names: FieldNames,
+    use_default: bool,
+}
+
+impl FieldAttrs {
+    /// Create a FieldAttr with a single default field name
+    pub fn new(
+        skip_serializing_field: bool,
+        default_value: bool,
+        name: P<ast::Expr>,
+    ) -> FieldAttrs {
+        FieldAttrs {
+            skip_serializing_field: skip_serializing_field,
+            names: FieldNames::Global(name),
+            use_default: default_value,
+        }
+    }
+
+    /// Create a FieldAttr with format specific field names
+    pub fn new_with_formats(
+        skip_serializing_field: bool,
+        default_value: bool,
+        default_name: P<ast::Expr>,
+        formats: HashMap<P<ast::Expr>, P<ast::Expr>>,
+    ) -> FieldAttrs {
+        FieldAttrs {
+            skip_serializing_field: skip_serializing_field,
+            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
+    }
+
+    /// Predicate for ignoring a field when serializing a value
+    pub fn skip_serializing_field(&self) -> bool {
+        self.skip_serializing_field
+    }
+}

serde_codegen/src/field.rs

@@ -0,0 +1,147 @@
+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 skip_serializing_field(mi: &ast::MetaItem) -> bool {
+    if let ast::MetaItem_::MetaWord(ref n) = mi.node {
+        n == &"skip_serializing"
+    } else {
+        false
+    }
+}
+
+fn field_attrs<'a>(
+    builder: &aster::AstBuilder,
+    field: &'a ast::StructField,
+) -> (Rename<'a>, bool, 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)),
+                    vals.iter().any(|mi| skip_serializing_field(mi)),
+                ))
+            } else {
+                Some((Rename::None, false, false))
+            }
+        })
+        .unwrap_or((Rename::None, false, 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, skip_serializing_field) =>
+                    FieldAttrs::new(
+                        skip_serializing_field,
+                        default_value,
+                        builder.expr().build_lit(P(rename.clone()))),
+                (Rename::Format(renames), default_value, skip_serializing_field) => {
+                    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(
+                        skip_serializing_field,
+                        default_value,
+                        default_field_name(cx, builder, field.node.kind),
+                        res)
+                },
+                (Rename::None, default_value, skip_serializing_field) => {
+                    FieldAttrs::new(
+                        skip_serializing_field,
+                        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

@@ -1,3 +1,5 @@
+use aster;
+
 use syntax::ast::{
     Ident,
     MetaItem,
@@ -7,21 +9,29 @@ use syntax::ast::{
 };
 use syntax::ast;
 use syntax::codemap::Span;
-use syntax::ext::base::ExtCtxt;
+use syntax::ext::base::{Annotatable, ExtCtxt};
 use syntax::ext::build::AstBuilder;
 use syntax::ptr::P;
 
-use aster;
-
-use field::{Direction, struct_field_strs};
+use field::struct_field_attrs;
 
 pub fn expand_derive_serialize(
     cx: &mut ExtCtxt,
     span: Span,
-    _mitem: &MetaItem,
-    item: &Item,
-    push: &mut FnMut(P<ast::Item>)
+    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 {
@@ -43,7 +53,7 @@ pub fn expand_derive_serialize(
     let body = serialize_body(
         cx,
         &builder,
-        item,
+        &item,
         &impl_generics,
         ty.clone(),
     );
@@ -61,7 +71,7 @@ pub fn expand_derive_serialize(
         }
     ).unwrap();
 
-    push(impl_item)
+    push(Annotatable::Item(impl_item))
 }
 
 fn serialize_body(
@@ -88,6 +98,7 @@ fn serialize_body(
                 builder,
                 item.ident,
                 impl_generics,
+                ty,
                 enum_def,
             )
         }
@@ -113,15 +124,22 @@ fn serialize_item_struct(
         }
     }
 
-    match (named_fields.is_empty(), unnamed_fields == 0) {
-        (true, true) => {
+    match (named_fields.is_empty(), unnamed_fields) {
+        (true, 0) => {
             serialize_unit_struct(
                 cx,
                 &builder,
                 item.ident,
             )
         }
-        (true, false) => {
+        (true, 1) => {
+            serialize_newtype_struct(
+                cx,
+                &builder,
+                item.ident,
+            )
+        }
+        (true, _) => {
             serialize_tuple_struct(
                 cx,
                 &builder,
@@ -131,7 +149,7 @@ fn serialize_item_struct(
                 unnamed_fields,
             )
         }
-        (false, true) => {
+        (false, 0) => {
             serialize_struct(
                 cx,
                 &builder,
@@ -142,7 +160,7 @@ fn serialize_item_struct(
                 named_fields,
             )
         }
-        (false, false) => {
+        (false, _) => {
             cx.bug("struct has named and unnamed fields")
         }
     }
@@ -155,7 +173,17 @@ fn serialize_unit_struct(
 ) -> P<ast::Expr> {
     let type_name = builder.expr().str(type_ident);
 
-    quote_expr!(cx, serializer.visit_named_unit($type_name))
+    quote_expr!(cx, serializer.visit_unit_struct($type_name))
+}
+
+fn serialize_newtype_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_newtype_struct($type_name, &self.0))
 }
 
 fn serialize_tuple_struct(
@@ -166,15 +194,14 @@ fn serialize_tuple_struct(
     ty: P<ast::Ty>,
     fields: usize,
 ) -> P<ast::Expr> {
-    let value_ty = builder.ty()
-        .ref_()
-            .lifetime("'__a")
-            .build_ty(ty);
-
     let (visitor_struct, visitor_impl) = serialize_tuple_struct_visitor(
         cx,
         builder,
-        value_ty,
+        ty.clone(),
+        builder.ty()
+            .ref_()
+            .lifetime("'__a")
+            .build_ty(ty.clone()),
         fields,
         impl_generics,
     );
@@ -184,9 +211,10 @@ fn serialize_tuple_struct(
     quote_expr!(cx, {
         $visitor_struct
         $visitor_impl
-        serializer.visit_named_seq($type_name, Visitor {
+        serializer.visit_tuple_struct($type_name, Visitor {
             value: self,
             state: 0,
+            _structure_ty: ::std::marker::PhantomData::<&$ty>,
         })
     })
 }
@@ -200,15 +228,14 @@ fn serialize_struct(
     struct_def: &StructDef,
     fields: Vec<Ident>,
 ) -> P<ast::Expr> {
-    let value_ty = builder.ty()
-        .ref_()
-            .lifetime("'__a")
-            .build_ty(ty.clone());
-
     let (visitor_struct, visitor_impl) = serialize_struct_visitor(
         cx,
         builder,
-        value_ty,
+        ty.clone(),
+        builder.ty()
+            .ref_()
+            .lifetime("'__a")
+            .build_ty(ty.clone()),
         struct_def,
         impl_generics,
         fields.iter().map(|field| quote_expr!(cx, &self.value.$field)),
@@ -219,9 +246,10 @@ fn serialize_struct(
     quote_expr!(cx, {
         $visitor_struct
         $visitor_impl
-        serializer.visit_named_map($type_name, Visitor {
+        serializer.visit_struct($type_name, Visitor {
             value: self,
             state: 0,
+            _structure_ty: ::std::marker::PhantomData::<&$ty>,
         })
     })
 }
@@ -231,16 +259,20 @@ fn serialize_item_enum(
     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| {
+        .enumerate()
+        .map(|(variant_index, variant)| {
             serialize_variant(
                 cx,
                 builder,
                 type_ident,
                 impl_generics,
+                ty.clone(),
                 variant,
+                variant_index,
             )
         })
         .collect();
@@ -257,7 +289,9 @@ fn serialize_variant(
     builder: &aster::AstBuilder,
     type_ident: Ident,
     generics: &ast::Generics,
+    ty: P<ast::Ty>,
     variant: &ast::Variant,
+    variant_index: usize,
 ) -> ast::Arm {
     let type_name = builder.expr().str(type_ident);
     let variant_ident = variant.node.name;
@@ -271,14 +305,34 @@ fn serialize_variant(
 
             quote_arm!(cx,
                 $pat => {
-                    ::serde::ser::Serializer::visit_enum_unit(
+                    ::serde::ser::Serializer::visit_unit_variant(
                         serializer,
                         $type_name,
+                        $variant_index,
                         $variant_name,
                     )
-                },
+                }
             )
-        }
+        },
+        ast::TupleVariantKind(ref args) if args.len() == 1 => {
+            let field = builder.id("__simple_value");
+            let field = builder.pat().ref_id(field);
+            let pat = builder.pat().enum_()
+                .id(type_ident).id(variant_ident).build()
+                .with_pats(Some(field).into_iter())
+                .build();
+            quote_arm!(cx,
+                $pat => {
+                    ::serde::ser::Serializer::visit_newtype_variant(
+                        serializer,
+                        $type_name,
+                        $variant_index,
+                        $variant_name,
+                        __simple_value,
+                    )
+                }
+            )
+        },
         ast::TupleVariantKind(ref args) => {
             let fields: Vec<ast::Ident> = (0 .. args.len())
                 .map(|i| builder.id(format!("__field{}", i)))
@@ -293,8 +347,10 @@ fn serialize_variant(
                 cx,
                 builder,
                 type_name,
+                variant_index,
                 variant_name,
                 generics,
+                ty,
                 args,
                 fields,
             );
@@ -328,8 +384,10 @@ fn serialize_variant(
                 cx,
                 builder,
                 type_name,
+                variant_index,
                 variant_name,
                 generics,
+                ty,
                 struct_def,
                 fields,
             );
@@ -343,12 +401,14 @@ fn serialize_tuple_variant(
     cx: &ExtCtxt,
     builder: &aster::AstBuilder,
     type_name: P<ast::Expr>,
+    variant_index: usize,
     variant_name: P<ast::Expr>,
     generics: &ast::Generics,
+    structure_ty: P<ast::Ty>,
     args: &[ast::VariantArg],
     fields: Vec<Ident>,
 ) -> P<ast::Expr> {
-    let value_ty = builder.ty().tuple()
+    let variant_ty = builder.ty().tuple()
         .with_tys(
             args.iter().map(|arg| {
                 builder.ty()
@@ -359,30 +419,30 @@ fn serialize_tuple_variant(
         )
         .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_tuple_struct_visitor(
         cx,
         builder,
-        value_ty,
+        structure_ty.clone(),
+        variant_ty,
         args.len(),
         generics,
     );
 
+    let value_expr = builder.expr().tuple()
+        .with_exprs(
+            fields.iter().map(|field| {
+                builder.expr().id(field)
+            })
+        )
+        .build();
+
     quote_expr!(cx, {
         $visitor_struct
         $visitor_impl
-        serializer.visit_enum_seq($type_name, $variant_name, Visitor {
+        serializer.visit_tuple_variant($type_name, $variant_index, $variant_name, Visitor {
             value: $value_expr,
             state: 0,
+            _structure_ty: ::std::marker::PhantomData::<&$structure_ty>,
         })
     })
 }
@@ -391,8 +451,10 @@ fn serialize_struct_variant(
     cx: &ExtCtxt,
     builder: &aster::AstBuilder,
     type_name: P<ast::Expr>,
+    variant_index: usize,
     variant_name: P<ast::Expr>,
     generics: &ast::Generics,
+    structure_ty: P<ast::Ty>,
     struct_def: &ast::StructDef,
     fields: Vec<Ident>,
 ) -> P<ast::Expr> {
@@ -410,9 +472,7 @@ fn serialize_struct_variant(
     let value_expr = builder.expr().tuple()
         .with_exprs(
             fields.iter().map(|field| {
-                builder.expr()
-                    .addr_of()
-                    .id(field)
+                builder.expr().id(field)
             })
         )
         .build();
@@ -420,6 +480,7 @@ fn serialize_struct_variant(
     let (visitor_struct, visitor_impl) = serialize_struct_visitor(
         cx,
         builder,
+        structure_ty.clone(),
         value_ty,
         struct_def,
         generics,
@@ -433,9 +494,10 @@ fn serialize_struct_variant(
     quote_expr!(cx, {
         $visitor_struct
         $visitor_impl
-        serializer.visit_enum_map($type_name, $variant_name, Visitor {
+        serializer.visit_struct_variant($type_name, $variant_index, $variant_name, Visitor {
             value: $value_expr,
             state: 0,
+            _structure_ty: ::std::marker::PhantomData::<&$structure_ty>,
         })
     })
 }
@@ -443,7 +505,8 @@ fn serialize_struct_variant(
 fn serialize_tuple_struct_visitor(
     cx: &ExtCtxt,
     builder: &aster::AstBuilder,
-    value_ty: P<ast::Ty>,
+    structure_ty: P<ast::Ty>,
+    variant_ty: P<ast::Ty>,
     fields: usize,
     generics: &ast::Generics
 ) -> (P<ast::Item>, P<ast::Item>) {
@@ -456,7 +519,7 @@ fn serialize_tuple_struct_visitor(
             quote_arm!(cx,
                 $i => {
                     self.state += 1;
-                    let v = try!(serializer.visit_seq_elt(&$expr));
+                    let v = try!(serializer.visit_tuple_struct_elt(&$expr));
                     Ok(Some(v))
                 }
             )
@@ -478,7 +541,8 @@ fn serialize_tuple_struct_visitor(
         quote_item!(cx,
             struct Visitor $visitor_impl_generics $where_clause {
                 state: usize,
-                value: $value_ty,
+                value: $variant_ty,
+                _structure_ty: ::std::marker::PhantomData<&'__a $structure_ty>,
             }
         ).unwrap(),
 
@@ -488,11 +552,11 @@ fn serialize_tuple_struct_visitor(
             $where_clause {
                 #[inline]
                 fn visit<S>(&mut self, serializer: &mut S) -> ::std::result::Result<Option<()>, S::Error>
-                    where S: ::serde::ser::Serializer,
+                    where S: ::serde::ser::Serializer
                 {
                     match self.state {
                         $arms
-                        _ => Ok(None),
+                        _ => Ok(None)
                     }
                 }
 
@@ -508,7 +572,8 @@ fn serialize_tuple_struct_visitor(
 fn serialize_struct_visitor<I>(
     cx: &ExtCtxt,
     builder: &aster::AstBuilder,
-    value_ty: P<ast::Ty>,
+    structure_ty: P<ast::Ty>,
+    variant_ty: P<ast::Ty>,
     struct_def: &StructDef,
     generics: &ast::Generics,
     value_exprs: I,
@@ -517,19 +582,21 @@ fn serialize_struct_visitor<I>(
 {
     let len = struct_def.fields.len();
 
-    let key_exprs = struct_field_strs(cx, builder, struct_def, Direction::Serialize);
+    let field_attrs = struct_field_attrs(cx, builder, struct_def);
 
-    let arms: Vec<ast::Arm> = key_exprs.iter()
+    let arms: Vec<ast::Arm> = field_attrs.into_iter()
         .zip(value_exprs)
+        .filter(|&(ref field, _)| !field.skip_serializing_field())
         .enumerate()
-        .map(|(i, (key_expr, value_expr))| {
+        .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(
+                                serializer.visit_struct_elt(
                                     $key_expr,
                                     $value_expr,
                                 )
@@ -556,7 +623,8 @@ fn serialize_struct_visitor<I>(
         quote_item!(cx,
             struct Visitor $visitor_impl_generics $where_clause {
                 state: usize,
-                value: $value_ty,
+                value: $variant_ty,
+                _structure_ty: ::std::marker::PhantomData<&'__a $structure_ty>,
             }
         ).unwrap(),
 
@@ -571,7 +639,7 @@ fn serialize_struct_visitor<I>(
                 {
                     match self.state {
                         $arms
-                        _ => Ok(None),
+                        _ => Ok(None)
                     }
                 }
 

serde_json/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "serde_json"
+version = "0.5.0"
+authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
+license = "MIT/Apache-2.0"
+description = "A JSON serialization file format"
+repository = "https://github.com/serde-rs/serde"
+documentation = "http://serde-rs.github.io/serde/serde"
+readme = "../README.md"
+keywords = ["serialization", "json"]
+
+[dependencies]
+num = "*"
+serde = { version = "*", path = "../serde" }

serde_json/src/builder.rs

@@ -10,8 +10,9 @@
 
 use std::collections::BTreeMap;
 
-use ser::{self, Serialize};
-use json::value::{self, Value};
+use serde::ser::{self, Serialize};
+
+use value::{self, Value};
 
 pub struct ArrayBuilder {
     array: Vec<Value>,

serde_json/src/de.rs

@@ -0,0 +1,814 @@
+use std::char;
+use std::i32;
+use std::io;
+use std::str;
+
+use serde::de;
+use serde::iter::LineColIterator;
+
+use super::error::{Error, ErrorCode, Result};
+
+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) -> Deserializer<Iter> {
+        Deserializer {
+            rdr: LineColIterator::new(rdr),
+            ch: None,
+            str_buf: Vec::with_capacity(128),
+        }
+    }
+
+    #[inline]
+    pub fn end(&mut self) -> Result<()> {
+        try!(self.parse_whitespace());
+        if try!(self.eof()) {
+            Ok(())
+        } else {
+            Err(self.error(ErrorCode::TrailingCharacters))
+        }
+    }
+
+    fn eof(&mut self) -> Result<bool> {
+        Ok(try!(self.peek()).is_none())
+    }
+
+    fn peek(&mut self) -> Result<Option<u8>> {
+        match self.ch {
+            Some(ch) => Ok(Some(ch)),
+            None => {
+                self.ch = try!(self.next_char());
+                Ok(self.ch)
+            }
+        }
+    }
+
+    fn peek_or_null(&mut self) -> Result<u8> {
+        Ok(try!(self.peek()).unwrap_or(b'\x00'))
+    }
+
+    fn eat_char(&mut self) {
+        self.ch = None;
+    }
+
+    fn next_char(&mut self) -> Result<Option<u8>> {
+        match self.ch.take() {
+            Some(ch) => Ok(Some(ch)),
+            None => {
+                match self.rdr.next() {
+                    Some(Err(err)) => Err(Error::IoError(err)),
+                    Some(Ok(ch)) => Ok(Some(ch)),
+                    None => Ok(None),
+                }
+            }
+        }
+    }
+
+    fn next_char_or_null(&mut self) -> Result<u8> {
+        Ok(try!(self.next_char()).unwrap_or(b'\x00'))
+    }
+
+    fn error(&mut self, reason: ErrorCode) -> Error {
+        Error::SyntaxError(reason, self.rdr.line(), self.rdr.col())
+    }
+
+    fn parse_whitespace(&mut self) -> Result<()> {
+        loop {
+            match try!(self.peek_or_null()) {
+                b' ' | b'\n' | b'\t' | b'\r' => {
+                    self.eat_char();
+                }
+                _ => { return Ok(()); }
+            }
+        }
+    }
+
+    fn parse_value<V>(&mut self, mut visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        try!(self.parse_whitespace());
+
+        if try!(self.eof()) {
+            return Err(self.error(ErrorCode::EOFWhileParsingValue));
+        }
+
+        let value = match try!(self.peek_or_null()) {
+            b'n' => {
+                self.eat_char();
+                try!(self.parse_ident(b"ull"));
+                visitor.visit_unit()
+            }
+            b't' => {
+                self.eat_char();
+                try!(self.parse_ident(b"rue"));
+                visitor.visit_bool(true)
+            }
+            b'f' => {
+                self.eat_char();
+                try!(self.parse_ident(b"alse"));
+                visitor.visit_bool(false)
+            }
+            b'-' => {
+                self.eat_char();
+                self.parse_integer(false, visitor)
+            }
+            b'0' ... b'9' => {
+                self.parse_integer(true, visitor)
+            }
+            b'"' => {
+                self.eat_char();
+                try!(self.parse_string());
+                let s = str::from_utf8(&self.str_buf).unwrap();
+                visitor.visit_str(s)
+            }
+            b'[' => {
+                self.eat_char();
+                visitor.visit_seq(SeqVisitor::new(self))
+            }
+            b'{' => {
+                self.eat_char();
+                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<()> {
+        for c in ident {
+            if Some(*c) != try!(self.next_char()) {
+                return Err(self.error(ErrorCode::ExpectedSomeIdent));
+            }
+        }
+
+        Ok(())
+    }
+
+    fn parse_integer<V>(&mut self, pos: bool, visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        match try!(self.next_char_or_null()) {
+            b'0' => {
+                // There can be only one leading '0'.
+                match try!(self.peek_or_null()) {
+                    b'0' ... b'9' => {
+                        Err(self.error(ErrorCode::InvalidNumber))
+                    }
+                    _ => {
+                        self.parse_number(pos, 0, visitor)
+                    }
+                }
+            },
+            c @ b'1' ... b'9' => {
+                let mut res: u64 = (c as u64) - ('0' as u64);
+
+                loop {
+                    match try!(self.peek_or_null()) {
+                        c @ b'0' ... b'9' => {
+                            self.eat_char();
+
+                            let digit = (c as u64) - ('0' as u64);
+
+                            // We need to be careful with overflow. If we can, try to keep the
+                            // number as a `u64` until we grow too large. At that point, switch to
+                            // parsing the value as a `f64`.
+                            match res.checked_mul(10).and_then(|val| val.checked_add(digit)) {
+                                Some(res_) => { res = res_; }
+                                None => {
+                                    return self.parse_float(
+                                        pos,
+                                        (res as f64) * 10.0 + (digit as f64),
+                                        visitor);
+                                }
+                            }
+                        }
+                        _ => {
+                            return self.parse_number(pos, res, visitor);
+                        }
+                    }
+                }
+            }
+            _ => {
+                Err(self.error(ErrorCode::InvalidNumber))
+            }
+        }
+    }
+
+    fn parse_float<V>(&mut self,
+                      pos: bool,
+                      mut res: f64,
+                      mut visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        loop {
+            match try!(self.next_char_or_null()) {
+                c @ b'0' ... b'9' => {
+                    let digit = (c as u64) - ('0' as u64);
+
+                    res *= 10.0;
+                    res += digit as f64;
+                }
+                _ => {
+                    match try!(self.peek_or_null()) {
+                        b'.' => {
+                            return self.parse_decimal(pos, res, visitor);
+                        }
+                        b'e' | b'E' => {
+                            return self.parse_exponent(pos, res, visitor);
+                        }
+                        _ => {
+                            if !pos {
+                                res = -res;
+                            }
+
+                            return visitor.visit_f64(res);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    fn parse_number<V>(&mut self,
+                       pos: bool,
+                       res: u64,
+                       mut visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        match try!(self.peek_or_null()) {
+            b'.' => {
+                self.parse_decimal(pos, res as f64, visitor)
+            }
+            b'e' | b'E' => {
+                self.parse_exponent(pos, res as f64, visitor)
+            }
+            _ => {
+                if pos {
+                    visitor.visit_u64(res)
+                } else {
+                    // FIXME: `wrapping_neg` will be stable in Rust 1.2
+                    //let res_i64 = (res as i64).wrapping_neg();
+                    let res_i64 = (!res + 1) as i64;
+
+                    // Convert into a float if we underflow.
+                    if res_i64 > 0 {
+                        visitor.visit_f64(-(res as f64))
+                    } else {
+                        visitor.visit_i64(res_i64)
+                    }
+                }
+            }
+        }
+    }
+
+    fn parse_decimal<V>(&mut self,
+                        pos: bool,
+                        mut res: f64,
+                        mut visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        self.eat_char();
+
+        let mut dec = 0.1;
+
+        // Make sure a digit follows the decimal place.
+        match try!(self.next_char_or_null()) {
+            c @ b'0' ... b'9' => {
+                res += (((c as u64) - (b'0' as u64)) as f64) * dec;
+            }
+             _ => { return Err(self.error(ErrorCode::InvalidNumber)); }
+        }
+
+        loop {
+            match try!(self.peek_or_null()) {
+                c @ b'0' ... b'9' => {
+                    self.eat_char();
+
+                    dec /= 10.0;
+                    res += (((c as u64) - (b'0' as u64)) as f64) * dec;
+                }
+                _ => { break; }
+            }
+        }
+
+        match try!(self.peek_or_null()) {
+            b'e' | b'E' => {
+                self.parse_exponent(pos, res, visitor)
+            }
+            _ => {
+                if pos {
+                    visitor.visit_f64(res)
+                } else {
+                    visitor.visit_f64(-res)
+                }
+            }
+        }
+
+    }
+
+    fn parse_exponent<V>(&mut self,
+                         pos: bool,
+                         mut res: f64,
+                         mut visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        self.eat_char();
+
+        let pos_exp = match try!(self.peek_or_null()) {
+            b'+' => { self.eat_char(); true }
+            b'-' => { self.eat_char(); false }
+            _ => { true }
+        };
+
+        // Make sure a digit follows the exponent place.
+        let mut exp = match try!(self.next_char_or_null()) {
+            c @ b'0' ... b'9' => { (c as u64) - (b'0' as u64) }
+            _ => { return Err(self.error(ErrorCode::InvalidNumber)); }
+        };
+
+        loop {
+            match try!(self.peek_or_null()) {
+                c @ b'0' ... b'9' => {
+                    self.eat_char();
+
+                    exp = try_or_invalid!(self, exp.checked_mul(10));
+                    exp = try_or_invalid!(self, exp.checked_add((c as u64) - (b'0' as u64)));
+                }
+                _ => { break; }
+            }
+        }
+
+        let exp = if exp <= i32::MAX as u64 {
+            10_f64.powi(exp as i32)
+        } else {
+            return Err(self.error(ErrorCode::InvalidNumber));
+        };
+
+        if pos_exp {
+            res *= exp;
+        } else {
+            res /= exp;
+        }
+
+        if pos {
+            visitor.visit_f64(res)
+        } else {
+            visitor.visit_f64(-res)
+        }
+    }
+
+    fn decode_hex_escape(&mut self) -> Result<u16> {
+        let mut i = 0;
+        let mut n = 0u16;
+        while i < 4 && !try!(self.eof()) {
+            n = match try!(self.next_char_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<()> {
+        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'"' => {
+                    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<()> {
+        try!(self.parse_whitespace());
+
+        match try!(self.next_char()) {
+            Some(b':') => Ok(()),
+            Some(_) => Err(self.error(ErrorCode::ExpectedColon)),
+            None => Err(self.error(ErrorCode::EOFWhileParsingObject)),
+        }
+    }
+}
+
+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>
+        where V: de::Visitor,
+    {
+        self.parse_value(visitor)
+    }
+
+    /// Parses a `null` as a None, and any other values as a `Some(...)`.
+    #[inline]
+    fn visit_option<V>(&mut self, mut visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        try!(self.parse_whitespace());
+
+        match try!(self.peek_or_null()) {
+            b'n' => {
+                self.eat_char();
+                try!(self.parse_ident(b"ull"));
+                visitor.visit_none()
+            }
+            _ => {
+                visitor.visit_some(self)
+            }
+        }
+    }
+
+    /// Parses a newtype struct as the underlying value.
+    #[inline]
+    fn visit_newtype_struct<V>(&mut self,
+                               _name: &str,
+                               mut visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        visitor.visit_newtype_struct(self)
+    }
+
+    /// Parses an enum as an object like `{"$KEY":$VALUE}`, where $VALUE is either a straight
+    /// value, a `[..]`, or a `{..}`.
+    #[inline]
+    fn visit_enum<V>(&mut self,
+                     _name: &str,
+                     _variants: &'static [&'static str],
+                     mut visitor: V) -> Result<V::Value>
+        where V: de::EnumVisitor,
+    {
+        try!(self.parse_whitespace());
+
+        match try!(self.next_char_or_null()) {
+            b'{' => {
+                try!(self.parse_whitespace());
+
+                let value = {
+                    try!(visitor.visit(&mut *self))
+                };
+
+                try!(self.parse_whitespace());
+
+                match try!(self.next_char_or_null()) {
+                    b'}' => {
+                        Ok(value)
+                    }
+                    _ => {
+                        Err(self.error(ErrorCode::ExpectedSomeValue))
+                    }
+                }
+            }
+            _ => {
+                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>>
+        where T: de::Deserialize,
+    {
+        try!(self.de.parse_whitespace());
+
+        match try!(self.de.peek()) {
+            Some(b']') => {
+                return Ok(None);
+            }
+            Some(b',') if !self.first => {
+                self.de.eat_char();
+            }
+            Some(_) => {
+                if self.first {
+                    self.first = false;
+                } else {
+                    return Err(self.de.error(ErrorCode::ExpectedListCommaOrEnd));
+                }
+            }
+            None => {
+                return Err(self.de.error(ErrorCode::EOFWhileParsingList));
+            }
+        }
+
+        let value = try!(de::Deserialize::deserialize(self.de));
+        Ok(Some(value))
+    }
+
+    fn end(&mut self) -> Result<()> {
+        try!(self.de.parse_whitespace());
+
+        match try!(self.de.next_char()) {
+            Some(b']') => { Ok(()) }
+            Some(_) => {
+                Err(self.de.error(ErrorCode::TrailingCharacters))
+            }
+            None => {
+                Err(self.de.error(ErrorCode::EOFWhileParsingList))
+            }
+        }
+    }
+}
+
+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>>
+        where K: de::Deserialize,
+    {
+        try!(self.de.parse_whitespace());
+
+        match try!(self.de.peek()) {
+            Some(b'}') => {
+                return Ok(None);
+            }
+            Some(b',') if !self.first => {
+                self.de.eat_char();
+                try!(self.de.parse_whitespace());
+            }
+            Some(_) => {
+                if self.first {
+                    self.first = false;
+                } else {
+                    return Err(self.de.error(ErrorCode::ExpectedObjectCommaOrEnd));
+                }
+            }
+            None => {
+                return Err(self.de.error(ErrorCode::EOFWhileParsingObject));
+            }
+        }
+
+        match try!(self.de.peek()) {
+            Some(b'"') => {
+                Ok(Some(try!(de::Deserialize::deserialize(self.de))))
+            }
+            Some(_) => {
+                Err(self.de.error(ErrorCode::KeyMustBeAString))
+            }
+            None => {
+                Err(self.de.error(ErrorCode::EOFWhileParsingValue))
+            }
+        }
+    }
+
+    fn visit_value<V>(&mut self) -> Result<V>
+        where V: de::Deserialize,
+    {
+        try!(self.de.parse_object_colon());
+
+        Ok(try!(de::Deserialize::deserialize(self.de)))
+    }
+
+    fn end(&mut self) -> Result<()> {
+        try!(self.de.parse_whitespace());
+
+        match try!(self.de.next_char()) {
+            Some(b'}') => { Ok(()) }
+            Some(_) => {
+                Err(self.de.error(ErrorCode::TrailingCharacters))
+            }
+            None => {
+                Err(self.de.error(ErrorCode::EOFWhileParsingObject))
+            }
+        }
+    }
+
+    fn missing_field<V>(&mut self, _field: &'static str) -> Result<V>
+        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>
+        where V: de::Deserialize
+    {
+        let val = try!(de::Deserialize::deserialize(self));
+        try!(self.parse_object_colon());
+        Ok(val)
+    }
+
+    fn visit_unit(&mut self) -> Result<()> {
+        de::Deserialize::deserialize(self)
+    }
+
+    fn visit_newtype<T>(&mut self) -> Result<T>
+        where T: de::Deserialize,
+    {
+        de::Deserialize::deserialize(self)
+    }
+
+    fn visit_tuple<V>(&mut self,
+                      _len: usize,
+                      visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        de::Deserializer::visit(self, visitor)
+    }
+
+    fn visit_struct<V>(&mut self,
+                       _fields: &'static [&'static str],
+                       visitor: V) -> Result<V::Value>
+        where V: de::Visitor,
+    {
+        de::Deserializer::visit(self, visitor)
+    }
+}
+
+/// Decodes a json value from a `std::io::Read`.
+pub fn from_iter<I, T>(iter: I) -> Result<T>
+    where I: Iterator<Item=io::Result<u8>>,
+          T: de::Deserialize,
+{
+    let mut de = 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>
+    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>
+    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>
+    where T: de::Deserialize
+{
+    from_slice(s.as_bytes())
+}

serde_json/src/error.rs

@@ -1,8 +1,9 @@
 use std::error;
 use std::fmt;
 use std::io;
+use std::result;
 
-use de;
+use serde::de;
 
 /// The errors that can arise while parsing a JSON stream.
 #[derive(Clone, PartialEq)]
@@ -151,35 +152,38 @@ impl From<de::value::Error> for Error {
     fn from(error: de::value::Error) -> Error {
         match error {
             de::value::Error::SyntaxError => {
-                de::Error::syntax_error()
+                Error::SyntaxError(ErrorCode::ExpectedSomeValue, 0, 0)
             }
             de::value::Error::EndOfStreamError => {
-                de::Error::end_of_stream_error()
+                de::Error::end_of_stream()
             }
             de::value::Error::UnknownFieldError(field) => {
                 Error::SyntaxError(ErrorCode::UnknownField(field), 0, 0)
             }
             de::value::Error::MissingFieldError(field) => {
-                de::Error::missing_field_error(field)
+                de::Error::missing_field(field)
             }
         }
     }
 }
 
 impl de::Error for Error {
-    fn syntax_error() -> Error {
+    fn syntax(_: &str) -> Error {
         Error::SyntaxError(ErrorCode::ExpectedSomeValue, 0, 0)
     }
 
-    fn end_of_stream_error() -> Error {
+    fn end_of_stream() -> Error {
         Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 0, 0)
     }
 
-    fn unknown_field_error(field: &str) -> Error {
+    fn unknown_field(field: &str) -> Error {
         Error::SyntaxError(ErrorCode::UnknownField(field.to_string()), 0, 0)
     }
 
-    fn missing_field_error(field: &'static str) -> Error {
+    fn missing_field(field: &'static str) -> Error {
         Error::MissingFieldError(field)
     }
 }
+
+/// Helper alias for `Result` objects that return a JSON `Error`.
+pub type Result<T> = result::Result<T, Error>;

serde_json/src/lib.rs

@@ -6,7 +6,7 @@
 //! 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
+//! Data types that can be encoded are JavaScript types (see the `serde_json:Value` enum for more
 //! details):
 //!
 //! * `Boolean`: equivalent to rust's `bool`
@@ -16,7 +16,7 @@
 //! * `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>`
+//! * `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
@@ -48,8 +48,8 @@
 //! `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
+//! 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.
 //!
@@ -61,12 +61,12 @@
 //! //#![feature(custom_derive, plugin)]
 //! //#![plugin(serde_macros)]
 //!
-//! extern crate serde;
+//! extern crate serde_json;
 //!
-//! use serde::json::{self, Value};
+//! use serde_json::Value;
 //!
 //! fn main() {
-//!     let data: Value = json::from_str("{\"foo\": 13, \"bar\": \"baz\"}").unwrap();
+//!     let data: Value = serde_json::from_str("{\"foo\": 13, \"bar\": \"baz\"}").unwrap();
 //!     println!("data: {:?}", data);
 //!     // data: {"bar":"baz","foo":13}
 //!     println!("object? {}", data.is_object());
@@ -92,8 +92,11 @@
 //! }
 //! ```
 
+extern crate num;
+extern crate serde;
+
 pub use self::de::{Deserializer, from_str};
-pub use self::error::{Error, ErrorCode};
+pub use self::error::{Error, ErrorCode, Result};
 pub use self::ser::{
     Serializer,
     to_writer,

serde_json/src/ser.rs

@@ -2,7 +2,7 @@ use std::io;
 use std::num::FpCategory;
 use std::string::FromUtf8Error;
 
-use ser;
+use serde::ser;
 
 /// A structure for implementing serialization to JSON.
 pub struct Serializer<W, F=CompactFormatter> {
@@ -158,8 +158,21 @@ impl<W, F> ser::Serializer for Serializer<W, F>
         self.writer.write_all(b"null")
     }
 
+    /// Override `visit_newtype_struct` to serialize newtypes without an object wrapper.
     #[inline]
-    fn visit_enum_unit(&mut self, _name: &str, variant: &str) -> io::Result<()> {
+    fn visit_newtype_struct<T>(&mut self,
+                               _name: &'static str,
+                               value: T) -> Result<(), Self::Error>
+        where T: ser::Serialize,
+    {
+        value.serialize(self)
+    }
+
+    #[inline]
+    fn visit_unit_variant(&mut self,
+                          _name: &str,
+                          _variant_index: usize,
+                          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));
@@ -168,6 +181,22 @@ impl<W, F> ser::Serializer for Serializer<W, F>
         self.formatter.close(&mut self.writer, b'}')
     }
 
+    #[inline]
+    fn visit_newtype_variant<T>(&mut self,
+                                _name: &str,
+                                _variant_index: usize,
+                                variant: &str,
+                                value: T) -> io::Result<()>
+        where T: ser::Serialize,
+    {
+        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!(value.serialize(self));
+        self.formatter.close(&mut self.writer, b'}')
+    }
+
     #[inline]
     fn visit_seq<V>(&mut self, mut visitor: V) -> io::Result<()>
         where V: ser::SeqVisitor,
@@ -190,7 +219,11 @@ impl<W, F> ser::Serializer for Serializer<W, F>
     }
 
     #[inline]
-    fn visit_enum_seq<V>(&mut self, _name: &str, variant: &str, visitor: V) -> io::Result<()>
+    fn visit_tuple_variant<V>(&mut self,
+                              _name: &str,
+                              _variant_index: usize,
+                              variant: &str,
+                              visitor: V) -> io::Result<()>
         where V: ser::SeqVisitor,
     {
         try!(self.formatter.open(&mut self.writer, b'{'));
@@ -206,9 +239,11 @@ impl<W, F> ser::Serializer for Serializer<W, F>
         where T: ser::Serialize,
     {
         try!(self.formatter.comma(&mut self.writer, self.first));
+        try!(value.serialize(self));
+
         self.first = false;
 
-        value.serialize(self)
+        Ok(())
     }
 
     #[inline]
@@ -232,7 +267,11 @@ impl<W, F> ser::Serializer for Serializer<W, F>
     }
 
     #[inline]
-    fn visit_enum_map<V>(&mut self, _name: &str, variant: &str, visitor: V) -> io::Result<()>
+    fn visit_struct_variant<V>(&mut self,
+                               _name: &str,
+                               _variant_index: usize,
+                               variant: &str,
+                               visitor: V) -> io::Result<()>
         where V: ser::MapVisitor,
     {
         try!(self.formatter.open(&mut self.writer, b'{'));
@@ -250,11 +289,19 @@ impl<W, F> ser::Serializer for Serializer<W, F>
               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)
+        try!(value.serialize(self));
+
+        self.first = false;
+
+        Ok(())
+    }
+
+    #[inline]
+    fn format() -> &'static str {
+        "json"
     }
 }
 
@@ -418,12 +465,7 @@ fn fmt_f32_or_null<W>(wr: &mut W, value: f32) -> io::Result<()>
     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(())
+            write!(wr, "{:?}", value)
         }
     }
 }
@@ -434,12 +476,7 @@ fn fmt_f64_or_null<W>(wr: &mut W, value: f64) -> io::Result<()>
     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(())
+            write!(wr, "{:?}", value)
         }
     }
 }

serde_json/src/value.rs

@@ -6,9 +6,10 @@ use std::vec;
 
 use num::NumCast;
 
-use de;
-use ser;
-use super::error::Error;
+use serde::de;
+use serde::ser;
+
+use error::Error;
 
 #[derive(Clone, PartialEq)]
 pub enum Value {
@@ -37,8 +38,30 @@ impl Value {
     /// 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.iter() {
-            match target.find(*key) {
+        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
             }
@@ -436,7 +459,10 @@ impl ser::Serializer for Serializer {
     }
 
     #[inline]
-    fn visit_enum_unit(&mut self, _name: &str, variant: &str) -> Result<(), ()> {
+    fn visit_unit_variant(&mut self,
+                          _name: &str,
+                          _variant_index: usize,
+                          variant: &str) -> Result<(), ()> {
         let mut values = BTreeMap::new();
         values.insert(variant.to_string(), Value::Array(vec![]));
 
@@ -445,6 +471,22 @@ impl ser::Serializer for Serializer {
         Ok(())
     }
 
+    #[inline]
+    fn visit_newtype_variant<T>(&mut self,
+                                _name: &str,
+                                _variant_index: usize,
+                                variant: &str,
+                                value: T) -> Result<(), ()>
+        where T: ser::Serialize,
+    {
+        let mut values = BTreeMap::new();
+        values.insert(variant.to_string(), to_value(&value));
+
+        self.state.push(State::Value(Value::Object(values)));
+
+        Ok(())
+    }
+
     #[inline]
     fn visit_seq<V>(&mut self, mut visitor: V) -> Result<(), ()>
         where V: ser::SeqVisitor,
@@ -467,7 +509,11 @@ impl ser::Serializer for Serializer {
     }
 
     #[inline]
-    fn visit_enum_seq<V>(&mut self, _name: &str, variant: &str, visitor: V) -> Result<(), ()>
+    fn visit_tuple_variant<V>(&mut self,
+                              _name: &str,
+                              _variant_index: usize,
+                              variant: &str,
+                              visitor: V) -> Result<(), ()>
         where V: ser::SeqVisitor,
     {
         try!(self.visit_seq(visitor));
@@ -526,7 +572,11 @@ impl ser::Serializer for Serializer {
     }
 
     #[inline]
-    fn visit_enum_map<V>(&mut self, _name: &str, variant: &str, visitor: V) -> Result<(), ()>
+    fn visit_struct_variant<V>(&mut self,
+                               _name: &str,
+                               _variant_index: usize,
+                               variant: &str,
+                               visitor: V) -> Result<(), ()>
         where V: ser::MapVisitor,
     {
         try!(self.visit_map(visitor));
@@ -571,6 +621,11 @@ impl ser::Serializer for Serializer {
 
         Ok(())
     }
+
+    #[inline]
+    fn format() -> &'static str {
+        "json"
+    }
 }
 
 pub struct Deserializer {
@@ -595,7 +650,7 @@ impl de::Deserializer for Deserializer {
     {
         let value = match self.value.take() {
             Some(value) => value,
-            None => { return Err(de::Error::end_of_stream_error()); }
+            None => { return Err(de::Error::end_of_stream()); }
         };
 
         match value {
@@ -632,49 +687,117 @@ impl de::Deserializer for Deserializer {
         match self.value {
             Some(Value::Null) => visitor.visit_none(),
             Some(_) => visitor.visit_some(self),
-            None => Err(de::Error::end_of_stream_error()),
+            None => Err(de::Error::end_of_stream()),
         }
     }
 
     #[inline]
-    fn visit_enum<V>(&mut self, _name: &str, mut visitor: V) -> Result<V::Value, Error>
+    fn visit_enum<V>(&mut self,
+                     _name: &str,
+                     _variants: &'static [&'static 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()); }
+            Some(_) => { return Err(de::Error::syntax("expected an enum")); }
+            None => { return Err(de::Error::end_of_stream()); }
         };
 
         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()); }
+        let (variant, value) = match iter.next() {
+            Some(v) => v,
+            None => return Err(de::Error::syntax("expected a variant name")),
         };
 
+        // enums are encoded in json as maps with a single key:value pair
         match iter.next() {
-            Some(_) => Err(de::Error::syntax_error()),
-            None => Ok(value)
+            Some(_) => Err(de::Error::syntax("expected map")),
+            None => visitor.visit(VariantDeserializer {
+                de: self,
+                val: Some(value),
+                variant: Some(Value::String(variant)),
+            }),
+        }
+    }
+
+    #[inline]
+    fn visit_newtype_struct<V>(&mut self,
+                               _name: &'static str,
+                               mut visitor: V) -> Result<V::Value, Self::Error>
+        where V: de::Visitor,
+    {
+        visitor.visit_newtype_struct(self)
+    }
+
+    #[inline]
+    fn format() -> &'static str {
+        "json"
+    }
+}
+
+struct VariantDeserializer<'a> {
+    de: &'a mut Deserializer,
+    val: Option<Value>,
+    variant: Option<Value>,
+}
+
+impl<'a> de::VariantVisitor for VariantDeserializer<'a> {
+    type Error = Error;
+
+    fn visit_variant<V>(&mut self) -> Result<V, Error>
+        where V: de::Deserialize,
+    {
+        de::Deserialize::deserialize(&mut Deserializer::new(self.variant.take().unwrap()))
+    }
+
+    fn visit_unit(&mut self) -> Result<(), Error> {
+        de::Deserialize::deserialize(&mut Deserializer::new(self.val.take().unwrap()))
+    }
+
+    fn visit_newtype<T>(&mut self) -> Result<T, Error>
+        where T: de::Deserialize,
+    {
+        de::Deserialize::deserialize(&mut Deserializer::new(self.val.take().unwrap()))
+    }
+
+    fn visit_tuple<V>(&mut self,
+                      _len: usize,
+                      visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        if let Value::Array(fields) = self.val.take().unwrap() {
+            de::Deserializer::visit(
+                &mut SeqDeserializer {
+                    de: self.de,
+                    len: fields.len(),
+                    iter: fields.into_iter(),
+                },
+                visitor,
+            )
+        } else {
+            Err(de::Error::syntax("expected a tuple"))
+        }
+    }
+
+    fn visit_struct<V>(&mut self,
+                       _fields: &'static[&'static str],
+                       visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        if let Value::Object(fields) = self.val.take().unwrap() {
+            de::Deserializer::visit(
+                &mut MapDeserializer {
+                    de: self.de,
+                    len: fields.len(),
+                    iter: fields.into_iter(),
+                    value: None,
+                },
+                visitor,
+            )
+        } else {
+            Err(de::Error::syntax("expected a struct"))
         }
     }
 }
@@ -720,7 +843,7 @@ impl<'a> de::SeqVisitor for SeqDeserializer<'a> {
         if self.len == 0 {
             Ok(())
         } else {
-            Err(de::Error::end_of_stream_error())
+            Err(de::Error::end_of_stream())
         }
     }
 
@@ -729,33 +852,6 @@ impl<'a> de::SeqVisitor for SeqDeserializer<'a> {
     }
 }
 
-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>,
@@ -792,7 +888,7 @@ impl<'a> de::MapVisitor for MapDeserializer<'a> {
         if self.len == 0 {
             Ok(())
         } else {
-            Err(de::Error::end_of_stream_error())
+            Err(de::Error::end_of_stream())
         }
     }
 
@@ -833,38 +929,10 @@ impl<'a> de::Deserializer for MapDeserializer<'a> {
     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

serde_macros/Cargo.toml

@@ -1,16 +1,20 @@
 [package]
 name = "serde_macros"
-version = "0.3.3"
+version = "0.5.0"
 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"
+repository = "https://github.com/serde-rs/serde"
 
 [lib]
 name = "serde_macros"
 plugin = true
 
 [dependencies]
-aster = "*"
-quasi = "*"
-quasi_macros = "*"
+serde_codegen = { version = "*", path = "../serde_codegen", default-features = false, features = ["nightly"] }
+
+[dev-dependencies]
+num = "*"
+rustc-serialize = "*"
+serde = { version = "*", path = "../serde", features = ["nightly"] }
+serde_json = { version = "*", path = "../serde_json" }

serde_macros/benches/bench.rs

@@ -0,0 +1,10 @@
+#![feature(custom_attribute, custom_derive, plugin, test)]
+#![plugin(serde_macros)]
+
+extern crate num;
+extern crate rustc_serialize;
+extern crate serde;
+extern crate serde_json;
+extern crate test;
+
+include!("../../serde_tests/benches/bench.rs.in");

serde_macros/examples/json.rs

@@ -2,9 +2,9 @@
 #![plugin(serde_macros)]
 
 extern crate serde;
+extern crate serde_json;
 
 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.
@@ -18,7 +18,7 @@ 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();
+    let serialized_point = serde_json::to_string(&point).unwrap();
 
     println!("{}", serialized_point);
     // prints:
@@ -26,7 +26,7 @@ fn main() {
     // {"x":5,"y":6}
 
     // There is also support for pretty printing using `to_string_pretty`:
-    let serialized_point = json::to_string_pretty(&point).unwrap();
+    let serialized_point = serde_json::to_string_pretty(&point).unwrap();
 
     println!("{}", serialized_point);
     // prints:
@@ -37,7 +37,7 @@ fn main() {
     // }
 
     // Values can also be deserialized with the same style using `from_str`:
-    let deserialized_point: Point = json::from_str(&serialized_point).unwrap();
+    let deserialized_point: Point = serde_json::from_str(&serialized_point).unwrap();
 
     println!("{:?}", deserialized_point);
     // prints:
@@ -46,16 +46,18 @@ fn main() {
 
     // `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();
+    let deserialized_map: BTreeMap<String, i64> =
+        serde_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();
+    // If you need to accept arbitrary data, you can also deserialize into `serde_json::Value`,
+    // which can represent all JSON values.
+    let deserialized_value: serde_json::Value =
+        serde_json::from_str(&serialized_point).unwrap();
 
     println!("{:?}", deserialized_value);
     // prints:

serde_macros/src/de.rs

@@ -1,695 +0,0 @@
-use syntax::ast::{
-    Ident,
-    MetaItem,
-    Item,
-    Expr,
-    StructDef,
-    EnumDef,
-};
-use syntax::ast;
-use syntax::codemap::Span;
-use syntax::ext::base::ExtCtxt;
-use syntax::ext::build::AstBuilder;
-use syntax::ptr::P;
-
-use aster;
-
-use field;
-
-pub fn expand_derive_deserialize(
-    cx: &mut ExtCtxt,
-    span: Span,
-    _mitem: &MetaItem,
-    item: &Item,
-    push: &mut FnMut(P<ast::Item>)
-) {
-    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(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,
-) -> (P<ast::Item>, P<ast::Ty>, P<ast::Expr>) {
-    if trait_generics.ty_params.is_empty() {
-        (
-            builder.item().tuple_struct("__Visitor").build(),
-            builder.ty().id("__Visitor"),
-            builder.expr().id("__Visitor"),
-        )
-    } else {
-        (
-            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().id("__Visitor")
-                .with_args(
-                    trait_generics.ty_params.iter().map(|_| {
-                        builder.expr().phantom_data()
-                    })
-                )
-                .build(),
-        )
-    }
-}
-
-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) = deserialize_visitor(
-        builder,
-        impl_generics,
-    );
-
-    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 $impl_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) = deserialize_visitor(
-        builder,
-        impl_generics,
-    );
-
-    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 $impl_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| 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) = deserialize_visitor(
-        builder,
-        impl_generics,
-    );
-
-    quote_expr!(cx, {
-        $variant_visitor
-
-        $visitor_item
-
-        impl $impl_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) = deserialize_visitor(
-        builder,
-        generics,
-    );
-
-    let visit_seq_expr = deserialize_seq(
-        cx,
-        builder,
-        builder.path().id(type_ident).id(variant_ident).build(),
-        fields,
-    );
-
-    quote_expr!(cx, {
-        $visitor_item
-
-        impl $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) = deserialize_visitor(
-        builder,
-        generics,
-    );
-
-    quote_expr!(cx, {
-        $field_visitor
-
-        $visitor_item
-
-        impl $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_exprs: Vec<P<ast::Expr>>,
-) -> Vec<P<ast::Item>> {
-    // Create the field names for the fields.
-    let field_idents: Vec<ast::Ident> = (0 .. field_exprs.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();
-
-    // Match arms to extract a field from a string
-    let field_arms: Vec<_> = field_idents.iter()
-        .zip(field_exprs.into_iter())
-        .map(|(field_ident, field_expr)| {
-            quote_arm!(cx, $field_expr => { Ok(__Field::$field_ident) })
-        })
-        .collect();
-
-    vec![
-        field_enum,
-
-        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,
-                {
-                    struct __FieldVisitor;
-
-                    impl ::serde::de::Visitor for __FieldVisitor {
-                        type Value = __Field;
-
-                        fn visit_str<E>(&mut self, value: &str) -> ::std::result::Result<__Field, E>
-                            where E: ::serde::de::Error,
-                        {
-                            match value {
-                                $field_arms
-                                _ => Err(::serde::de::Error::unknown_field_error(value)),
-                            }
-                        }
-                    }
-
-                    deserializer.visit(__FieldVisitor)
-                }
-            }
-        ).unwrap(),
-    ]
-}
-
-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_strs(cx, builder, struct_def, field::Direction::Deserialize),
-    );
-
-    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 => {
-                    $field_name = Some(try!(visitor.visit_value()));
-                }
-            )
-        })
-        .collect();
-
-    let extract_values: Vec<P<ast::Stmt>> = field_names.iter()
-        .zip(struct_def.fields.iter())
-        .map(|(field_name, field)| {
-            let rename = field::field_rename(field, &field::Direction::Deserialize);
-            let name_str = match (rename, field.node.kind) {
-                (Some(rename), _) => builder.expr().build_lit(P(rename.clone())),
-                (None, ast::NamedField(name, _)) => builder.expr().str(name),
-                (None, ast::UnnamedField(_)) => panic!("struct contains unnamed fields"),
-            };
-
-            let missing_expr = if field::default_value(field) {
-                quote_expr!(cx, ::std::default::Default::default())
-            } else {
-                quote_expr!(cx, try!(visitor.missing_field($name_str)))
-            };
-
-            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_macros/src/field.rs

@@ -1,96 +0,0 @@
-use syntax::ast;
-use syntax::attr;
-use syntax::ext::base::ExtCtxt;
-use syntax::ptr::P;
-
-use aster;
-
-pub enum Direction {
-    Serialize,
-    Deserialize,
-}
-
-pub fn field_rename<'a>(
-    field: &'a ast::StructField,
-    direction: &Direction,
-) -> Option<&'a ast::Lit> {
-    let dir_attr = match *direction {
-        Direction::Serialize => "rename_serialize",
-        Direction::Deserialize => "rename_deserialize",
-    };
-    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);
-                vals.iter().fold(None, |v, mi| {
-                    if let ast::MetaNameValue(ref n, ref lit) = mi.node {
-                        if n == &"rename" || n == &dir_attr {
-                            Some(lit)
-                        } else {
-                            v
-                        }
-                    } else {
-                        v
-                    }
-                })
-            } else {
-                None
-            }
-        })
-}
-
-pub fn struct_field_strs(
-    cx: &ExtCtxt,
-    builder: &aster::AstBuilder,
-    struct_def: &ast::StructDef,
-    direction: Direction,
-) -> Vec<P<ast::Expr>> {
-    struct_def.fields.iter()
-        .map(|field| {
-            match field_rename(field, &direction) {
-                Some(rename) => builder.expr().build_lit(P(rename.clone())),
-                None => {
-                    match field.node.kind {
-                        ast::NamedField(name, _) => {
-                            builder.expr().str(name)
-                        }
-                        ast::UnnamedField(_) => {
-                            cx.bug("struct has named and unnamed fields")
-                        }
-                    }
-                }
-            }
-        })
-        .collect()
-}
-
-pub fn default_value(field: &ast::StructField) -> bool {
-    field.node.attrs.iter()
-        .any(|sa| {
-             if let ast::MetaItem_::MetaList(ref n, ref vals) = sa.node.value.node {
-                 if n == &"serde" {
-                     attr::mark_used(&sa);
-                     vals.iter()
-                         .map(|mi|
-                              if let ast::MetaItem_::MetaWord(ref n) = mi.node {
-                                  n == &"default"
-                              } else {
-                                  false
-                              })
-                         .any(|x| x)
-                 } else {
-                     false
-                 }
-             }
-             else {
-                 false
-             }
-        })
-}

serde_macros/src/lib.rs

@@ -1,27 +1,10 @@
-#![feature(custom_derive, plugin, plugin_registrar, rustc_private, unboxed_closures)]
-#![plugin(quasi_macros)]
+#![feature(plugin_registrar, rustc_private)]
 
-extern crate aster;
-extern crate quasi;
+extern crate serde_codegen;
 extern crate rustc;
-extern crate syntax;
-
-use syntax::ext::base::Decorator;
-use syntax::parse::token;
-use rustc::plugin::Registry;
-
-mod ser;
-mod de;
-mod field;
 
 #[plugin_registrar]
 #[doc(hidden)]
-pub fn plugin_registrar(reg: &mut Registry) {
-    reg.register_syntax_extension(
-        token::intern("derive_Serialize"),
-        Decorator(Box::new(ser::expand_derive_serialize)));
-
-    reg.register_syntax_extension(
-        token::intern("derive_Deserialize"),
-        Decorator(Box::new(de::expand_derive_deserialize)));
+pub fn plugin_registrar(reg: &mut rustc::plugin::Registry) {
+    serde_codegen::register(reg);
 }

serde_macros/tests/test.rs

@@ -0,0 +1,8 @@
+#![feature(test, custom_attribute, custom_derive, plugin)]
+#![plugin(serde_macros)]
+
+extern crate serde;
+extern crate serde_json;
+extern crate test;
+
+include!("../../serde_tests/tests/test.rs.in");

serde_tests/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "serde_tests"
+version = "0.5.0"
+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 = "*" }
+syntex_syntax = { version = "*" }
+serde_codegen = { version = "*", path = "../serde_codegen", features = ["with-syntex"] }
+
+[dev-dependencies]
+num = "*"
+rustc-serialize = "*"
+serde = { version = "*", path = "../serde" }
+serde_json = { version = "*", path = "../serde_json" }
+syntex = "*"
+
+[[test]]
+name = "test"
+path = "tests/test.rs"
+
+[[bench]]
+name = "bench"
+path = "benches/bench.rs"

serde_tests/benches/bench.rs

@@ -0,0 +1,9 @@
+#![feature(test)]
+
+extern crate num;
+extern crate rustc_serialize;
+extern crate serde;
+extern crate serde_json;
+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;

serde_tests/benches/bench_enum.rs

@@ -1,18 +1,8 @@
-#![feature(custom_derive, plugin, test)]
-#![plugin(serde_macros)]
-
-extern crate serde;
-extern crate rustc_serialize;
-extern crate test;
-
 use test::Bencher;
-
 use rustc_serialize::{Decoder, Decodable};
-
+use serde;
 use serde::de::{Deserializer, Deserialize};
 
-use Animal::{Dog, Frog};
-
 //////////////////////////////////////////////////////////////////////////////
 
 #[derive(Clone, PartialEq, Debug, RustcDecodable, Deserialize)]
@@ -30,13 +20,13 @@ pub enum Error {
 }
 
 impl serde::de::Error for Error {
-    fn syntax_error() -> Error { Error::SyntaxError }
+    fn syntax(_: &str) -> Error { Error::SyntaxError }
 
-    fn end_of_stream_error() -> Error { Error::EndOfStreamError }
+    fn end_of_stream() -> Error { Error::EndOfStreamError }
 
-    fn unknown_field_error(_: &str) -> Error { Error::SyntaxError }
+    fn unknown_field(_: &str) -> Error { Error::SyntaxError }
 
-    fn missing_field_error(_: &'static str) -> Error { Error::SyntaxError }
+    fn missing_field(_: &'static str) -> Error { Error::SyntaxError }
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -298,7 +288,10 @@ mod deserializer {
         }
 
         #[inline]
-        fn visit_enum<V>(&mut self, _name: &str, mut visitor: V) -> Result<V::Value, Error>
+        fn visit_enum<V>(&mut self,
+                         _name: &str,
+                         _variants: &[&str],
+                         mut visitor: V) -> Result<V::Value, Error>
             where V: de::EnumVisitor,
         {
             match self.stack.pop() {
@@ -360,7 +353,9 @@ mod deserializer {
             de::Deserialize::deserialize(self.de)
         }
 
-        fn visit_seq<V>(&mut self, mut visitor: V) -> Result<V::Value, Error>
+        fn visit_tuple<V>(&mut self,
+                          _len: usize,
+                          mut visitor: V) -> Result<V::Value, Error>
             where V: de::Visitor,
         {
             visitor.visit_seq(self)
@@ -408,7 +403,7 @@ mod deserializer {
 #[bench]
 fn bench_decoder_dog(b: &mut Bencher) {
     b.iter(|| {
-        let animal = Dog;
+        let animal = Animal::Dog;
 
         let mut d = decoder::AnimalDecoder::new(animal.clone());
         let value: Animal = Decodable::decode(&mut d).unwrap();
@@ -420,7 +415,7 @@ fn bench_decoder_dog(b: &mut Bencher) {
 #[bench]
 fn bench_decoder_frog(b: &mut Bencher) {
     b.iter(|| {
-        let animal = Frog("Henry".to_string(), 349);
+        let animal = Animal::Frog("Henry".to_string(), 349);
 
         let mut d = decoder::AnimalDecoder::new(animal.clone());
         let value: Animal = Decodable::decode(&mut d).unwrap();
@@ -432,7 +427,7 @@ fn bench_decoder_frog(b: &mut Bencher) {
 #[bench]
 fn bench_deserializer_dog(b: &mut Bencher) {
     b.iter(|| {
-        let animal = Dog;
+        let animal = Animal::Dog;
 
         let mut d = deserializer::AnimalDeserializer::new(animal.clone());
         let value: Animal = Deserialize::deserialize(&mut d).unwrap();
@@ -444,7 +439,7 @@ fn bench_deserializer_dog(b: &mut Bencher) {
 #[bench]
 fn bench_deserializer_frog(b: &mut Bencher) {
     b.iter(|| {
-        let animal = Frog("Henry".to_string(), 349);
+        let animal = Animal::Frog("Henry".to_string(), 349);
 
         let mut d = deserializer::AnimalDeserializer::new(animal.clone());
         let value: Animal = Deserialize::deserialize(&mut d).unwrap();

serde_tests/benches/bench_log.rs

@@ -1,20 +1,14 @@
-#![feature(custom_derive, collections, plugin, test)]
-#![allow(non_camel_case_types)]
-#![plugin(serde_macros)]
-
-extern crate num;
-extern crate rustc_serialize;
-extern crate serde;
-extern crate test;
-
 use std::io::{self, Read, Write};
 use num::FromPrimitive;
 use test::Bencher;
 
+use rustc_serialize;
+
 use serde::de::{self, Deserialize, Deserializer};
-use serde::json::ser::escape_str;
-use serde::json;
 use serde::ser::{self, Serialize, Serializer};
+use serde_json::ser::escape_str;
+use serde_json;
+use std::str::FromStr;
 
 use rustc_serialize::Encodable;
 
@@ -31,6 +25,7 @@ struct Http {
     request_uri: String,
 }
 
+#[allow(non_camel_case_types)]
 #[derive(Copy, Clone, Debug, PartialEq)]
 enum HttpProtocol {
     HTTP_PROTOCOL_UNKNOWN,
@@ -53,6 +48,11 @@ impl rustc_serialize::Decodable for HttpProtocol {
     }
 }
 
+impl FromStr for HttpProtocol {
+    type Err = ();
+    fn from_str(_s: &str) -> Result<HttpProtocol, ()> { unimplemented!() }
+}
+
 impl FromPrimitive for HttpProtocol {
     fn from_i64(i: i64) -> Option<HttpProtocol> {
         FromPrimitive::from_u64(i as u64)
@@ -86,6 +86,7 @@ impl de::Deserialize for HttpProtocol {
     }
 }
 
+#[allow(non_camel_case_types)]
 #[derive(Copy, Clone, Debug, PartialEq)]
 enum HttpMethod {
     METHOD_UNKNOWN,
@@ -101,6 +102,11 @@ enum HttpMethod {
     PATCH,
 }
 
+impl FromStr for HttpMethod {
+    type Err = ();
+    fn from_str(_s: &str) -> Result<HttpMethod, ()> { unimplemented!() }
+}
+
 impl FromPrimitive for HttpMethod {
     fn from_i64(i: i64) -> Option<HttpMethod> {
         FromPrimitive::from_u64(i as u64)
@@ -157,6 +163,7 @@ impl de::Deserialize for HttpMethod {
     }
 }
 
+#[allow(non_camel_case_types)]
 #[derive(Copy, Clone, Debug, PartialEq)]
 enum CacheStatus {
     CACHESTATUS_UNKNOWN,
@@ -165,6 +172,11 @@ enum CacheStatus {
     Hit,
 }
 
+impl FromStr for CacheStatus {
+    type Err = ();
+    fn from_str(_s: &str) -> Result<CacheStatus, ()> { unimplemented!() }
+}
+
 impl FromPrimitive for CacheStatus {
     fn from_i64(i: i64) -> Option<CacheStatus> {
         FromPrimitive::from_u64(i as u64)
@@ -222,6 +234,7 @@ struct Origin {
     protocol: OriginProtocol,
 }
 
+#[allow(non_camel_case_types)]
 #[derive(Copy, Clone, Debug, PartialEq)]
 enum OriginProtocol {
     ORIGIN_PROTOCOL_UNKNOWN,
@@ -229,6 +242,11 @@ enum OriginProtocol {
     HTTPS,
 }
 
+impl FromStr for OriginProtocol {
+    type Err = ();
+    fn from_str(_s: &str) -> Result<OriginProtocol, ()> { unimplemented!() }
+}
+
 impl FromPrimitive for OriginProtocol {
     fn from_i64(i: i64) -> Option<OriginProtocol> {
         FromPrimitive::from_u64(i as u64)
@@ -277,6 +295,7 @@ impl de::Deserialize for OriginProtocol {
     }
 }
 
+#[allow(non_camel_case_types)]
 #[derive(Copy, Clone, Debug, PartialEq)]
 enum ZonePlan {
     ZONEPLAN_UNKNOWN,
@@ -286,6 +305,11 @@ enum ZonePlan {
     ENT,
 }
 
+impl FromStr for ZonePlan {
+    type Err = ();
+    fn from_str(_s: &str) -> Result<ZonePlan, ()> { unimplemented!() }
+}
+
 impl FromPrimitive for ZonePlan {
     fn from_i64(i: i64) -> Option<ZonePlan> {
         FromPrimitive::from_u64(i as u64)
@@ -596,6 +620,11 @@ enum Country {
 	ZW,
 }
 
+impl FromStr for Country {
+    type Err = ();
+    fn from_str(_s: &str) -> Result<Country, ()> { unimplemented!() }
+}
+
 impl FromPrimitive for Country {
     fn from_i64(i: i64) -> Option<Country> {
         FromPrimitive::from_u64(i as u64)
@@ -987,12 +1016,20 @@ impl MyMemWriter0 {
 
 
 impl Write for MyMemWriter0 {
+    #[cfg(feature = "nightly")]
     #[inline]
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
         self.buf.push_all(buf);
         Ok(buf.len())
     }
 
+    #[cfg(not(feature = "nightly"))]
+    #[inline]
+    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        self.buf.extend(buf.iter().cloned());
+        Ok(buf.len())
+    }
+
     #[inline]
     fn flush(&mut self) -> io::Result<()> {
         Ok(())
@@ -1086,18 +1123,18 @@ fn bench_encoder(b: &mut Bencher) {
 #[test]
 fn test_serializer() {
     let log = Log::new();
-    let json = json::to_vec(&log);
+    let json = serde_json::to_vec(&log);
     assert_eq!(json, JSON_STR.as_bytes());
 }
 
 #[bench]
 fn bench_serializer(b: &mut Bencher) {
     let log = Log::new();
-    let json = json::to_vec(&log);
+    let json = serde_json::to_vec(&log);
     b.bytes = json.len() as u64;
 
     b.iter(|| {
-        let _ = json::to_vec(&log);
+        let _ = serde_json::to_vec(&log);
     });
 }
 
@@ -1105,7 +1142,7 @@ fn bench_serializer(b: &mut Bencher) {
 fn test_serializer_vec() {
     let log = Log::new();
     let wr = Vec::with_capacity(1024);
-    let mut serializer = json::Serializer::new(wr);
+    let mut serializer = serde_json::Serializer::new(wr);
     log.serialize(&mut serializer).unwrap();
 
     let json = serializer.into_inner();
@@ -1115,7 +1152,7 @@ fn test_serializer_vec() {
 #[bench]
 fn bench_serializer_vec(b: &mut Bencher) {
     let log = Log::new();
-    let json = json::to_vec(&log);
+    let json = serde_json::to_vec(&log);
     b.bytes = json.len() as u64;
 
     let mut wr = Vec::with_capacity(1024);
@@ -1123,7 +1160,7 @@ fn bench_serializer_vec(b: &mut Bencher) {
     b.iter(|| {
         wr.clear();
 
-        let mut serializer = json::Serializer::new(wr.by_ref());
+        let mut serializer = serde_json::Serializer::new(wr.by_ref());
         log.serialize(&mut serializer).unwrap();
         let _json = serializer.into_inner();
     });
@@ -1132,7 +1169,7 @@ fn bench_serializer_vec(b: &mut Bencher) {
 #[bench]
 fn bench_serializer_slice(b: &mut Bencher) {
     let log = Log::new();
-    let json = json::to_vec(&log);
+    let json = serde_json::to_vec(&log);
     b.bytes = json.len() as u64;
 
     let mut buf = [0; 1024];
@@ -1141,7 +1178,7 @@ fn bench_serializer_slice(b: &mut Bencher) {
         for item in buf.iter_mut(){ *item = 0; }
         let mut wr = &mut buf[..];
 
-        let mut serializer = json::Serializer::new(wr.by_ref());
+        let mut serializer = serde_json::Serializer::new(wr.by_ref());
         log.serialize(&mut serializer).unwrap();
         let _json = serializer.into_inner();
     });
@@ -1154,7 +1191,7 @@ fn test_serializer_my_mem_writer0() {
     let mut wr = MyMemWriter0::with_capacity(1024);
 
     {
-        let mut serializer = json::Serializer::new(wr.by_ref());
+        let mut serializer = serde_json::Serializer::new(wr.by_ref());
         log.serialize(&mut serializer).unwrap();
         let _json = serializer.into_inner();
     }
@@ -1165,7 +1202,7 @@ fn test_serializer_my_mem_writer0() {
 #[bench]
 fn bench_serializer_my_mem_writer0(b: &mut Bencher) {
     let log = Log::new();
-    let json = json::to_vec(&log);
+    let json = serde_json::to_vec(&log);
     b.bytes = json.len() as u64;
 
     let mut wr = MyMemWriter0::with_capacity(1024);
@@ -1173,7 +1210,7 @@ fn bench_serializer_my_mem_writer0(b: &mut Bencher) {
     b.iter(|| {
         wr.buf.clear();
 
-        let mut serializer = json::Serializer::new(wr.by_ref());
+        let mut serializer = serde_json::Serializer::new(wr.by_ref());
         log.serialize(&mut serializer).unwrap();
         let _json = serializer.into_inner();
     });
@@ -1186,7 +1223,7 @@ fn test_serializer_my_mem_writer1() {
     let mut wr = MyMemWriter1::with_capacity(1024);
 
     {
-        let mut serializer = json::Serializer::new(wr.by_ref());
+        let mut serializer = serde_json::Serializer::new(wr.by_ref());
         log.serialize(&mut serializer).unwrap();
         let _json = serializer.into_inner();
     }
@@ -1197,7 +1234,7 @@ fn test_serializer_my_mem_writer1() {
 #[bench]
 fn bench_serializer_my_mem_writer1(b: &mut Bencher) {
     let log = Log::new();
-    let json = json::to_vec(&log);
+    let json = serde_json::to_vec(&log);
     b.bytes = json.len() as u64;
 
     let mut wr = MyMemWriter1::with_capacity(1024);
@@ -1205,7 +1242,7 @@ fn bench_serializer_my_mem_writer1(b: &mut Bencher) {
     b.iter(|| {
         wr.buf.clear();
 
-        let mut serializer = json::Serializer::new(wr.by_ref());
+        let mut serializer = serde_json::Serializer::new(wr.by_ref());
         log.serialize(&mut serializer).unwrap();
         let _json = serializer.into_inner();
     });
@@ -1556,6 +1593,6 @@ fn bench_deserializer(b: &mut Bencher) {
     b.bytes = JSON_STR.len() as u64;
 
     b.iter(|| {
-        let _log: Log = json::from_str(JSON_STR).unwrap();
+        let _log: Log = serde_json::from_str(JSON_STR).unwrap();
     });
 }

serde_tests/benches/bench_map.rs

@@ -1,16 +1,10 @@
-#![feature(custom_derive, plugin, test)]
-#![plugin(serde_macros)]
-
-extern crate serde;
-extern crate rustc_serialize;
-extern crate test;
-
 use std::fmt::Debug;
 use std::collections::HashMap;
 use test::Bencher;
 
 use rustc_serialize::{Decoder, Decodable};
 
+use serde;
 use serde::de::{Deserializer, Deserialize};
 
 //////////////////////////////////////////////////////////////////////////////
@@ -23,13 +17,13 @@ pub enum Error {
 }
 
 impl serde::de::Error for Error {
-    fn syntax_error() -> Error { Error::SyntaxError }
+    fn syntax(_: &str) -> Error { Error::SyntaxError }
 
-    fn end_of_stream_error() -> Error { Error::EndOfStream }
+    fn end_of_stream() -> Error { Error::EndOfStream }
 
-    fn unknown_field_error(_: &str) -> Error { Error::SyntaxError }
+    fn unknown_field(_: &str) -> Error { Error::SyntaxError }
 
-    fn missing_field_error(_: &'static str) -> Error {
+    fn missing_field(_: &'static str) -> Error {
         Error::MissingField
     }
 }
@@ -353,17 +347,17 @@ mod deserializer {
 
     impl de::Deserializer<Error> for IsizeDeserializer {
         #[inline]
-        fn end_of_stream_error(&mut self) -> Error {
+        fn end_of_stream(&mut self) -> Error {
             EndOfStream
         }
 
         #[inline]
-        fn syntax_error(&mut self, _token: de::Token, _expected: &[de::TokenKind]) -> Error {
+        fn syntax(&mut self, _token: de::Token, _expected: &[de::TokenKind]) -> Error {
             SyntaxError
         }
 
         #[inline]
-        fn unexpected_name_error(&mut self, _token: de::Token) -> Error {
+        fn unexpected_name(&mut self, _token: de::Token) -> Error {
             SyntaxError
         }
 

serde_tests/benches/bench_struct.rs

@@ -1,15 +1,9 @@
-#![feature(custom_derive, plugin, test)]
-#![plugin(serde_macros)]
-
-extern crate serde;
-extern crate rustc_serialize;
-extern crate test;
-
 use std::collections::HashMap;
 use test::Bencher;
 
 use rustc_serialize::{Decoder, Decodable};
 
+use serde;
 use serde::de::{Deserializer, Deserialize};
 
 //////////////////////////////////////////////////////////////////////////////
@@ -34,20 +28,18 @@ pub struct Outer {
 pub enum Error {
     EndOfStream,
     SyntaxError,
-    UnexpectedName,
-    ConversionError,
     MissingField,
     OtherError,
 }
 
 impl serde::de::Error for Error {
-    fn syntax_error() -> Error { Error::SyntaxError }
+    fn syntax(_: &str) -> Error { Error::SyntaxError }
 
-    fn end_of_stream_error() -> Error { Error::EndOfStream }
+    fn end_of_stream() -> Error { Error::EndOfStream }
 
-    fn unknown_field_error(_: &str) -> Error { Error::SyntaxError }
+    fn unknown_field(_: &str) -> Error { Error::SyntaxError }
 
-    fn missing_field_error(_: &'static str) -> Error {
+    fn missing_field(_: &'static str) -> Error {
         Error::MissingField
     }
 }
@@ -406,7 +398,10 @@ mod deserializer {
             }
         }
 
-        fn visit_named_map<V>(&mut self, name: &str, mut visitor: V) -> Result<V::Value, Error>
+        fn visit_struct<V>(&mut self,
+                           name: &str,
+                           _fields: &'static [&'static str],
+                           mut visitor: V) -> Result<V::Value, Error>
             where V: de::Visitor,
         {
             match self.stack.pop() {

serde_tests/benches/bench_vec.rs

@@ -1,15 +1,9 @@
-#![feature(plugin, test)]
-#![plugin(serde_macros)]
-
-extern crate serde;
-extern crate rustc_serialize;
-extern crate test;
-
 use std::fmt::Debug;
 use test::Bencher;
 
 use rustc_serialize::{Decoder, Decodable};
 
+use serde;
 use serde::de::{Deserializer, Deserialize};
 
 //////////////////////////////////////////////////////////////////////////////
@@ -21,13 +15,13 @@ pub enum Error {
 }
 
 impl serde::de::Error for Error {
-    fn syntax_error() -> Error { Error::SyntaxError }
+    fn syntax(_: &str) -> Error { Error::SyntaxError }
 
-    fn end_of_stream_error() -> Error { Error::EndOfStreamError }
+    fn end_of_stream() -> Error { Error::EndOfStreamError }
 
-    fn unknown_field_error(_: &str) -> Error { Error::SyntaxError }
+    fn unknown_field(_: &str) -> Error { Error::SyntaxError }
 
-    fn missing_field_error(_: &'static str) -> Error { Error::SyntaxError }
+    fn missing_field(_: &'static str) -> Error { Error::SyntaxError }
 }
 
 //////////////////////////////////////////////////////////////////////////////

serde_tests/build.rs

@@ -0,0 +1,22 @@
+extern crate syntex;
+extern crate serde_codegen;
+
+use std::env;
+use std::path::Path;
+
+fn main() {
+    let out_dir = env::var_os("OUT_DIR").unwrap();
+
+    for &(src, dst) in &[
+        ("tests/test.rs.in", "test.rs"),
+        ("benches/bench.rs.in", "bench.rs"),
+    ] {
+        let src = Path::new(src);
+        let dst = Path::new(&out_dir).join(dst);
+
+        let mut registry = syntex::Registry::new();
+
+        serde_codegen::register(&mut registry);
+        registry.expand("", &src, &dst).unwrap();
+    }
+}

serde_tests/tests/test.rs

@@ -0,0 +1,4 @@
+extern crate serde;
+extern crate serde_json;
+
+include!(concat!(env!("OUT_DIR"), "/test.rs"));

serde_tests/tests/test.rs.in

@@ -0,0 +1,7 @@
+mod test_annotations;
+mod test_bytes;
+mod test_de;
+mod test_json;
+mod test_json_builder;
+mod test_macros;
+mod test_ser;

serde_tests/tests/test_annotations.rs

@@ -0,0 +1,90 @@
+use std::default;
+use serde_json;
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+struct Default {
+    a1: i32,
+    #[serde(default)]
+    a2: i32,
+}
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+struct Rename {
+    a1: i32,
+    #[serde(rename="a3")]
+    a2: i32,
+}
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+struct FormatRename {
+    a1: i32,
+    #[serde(rename(xml= "a4", json="a5"))]
+    a2: i32,
+}
+
+#[derive(Debug, PartialEq, Deserialize, Serialize)]
+enum SerEnum<A> {
+    Map {
+        a: i8,
+        #[serde(rename(xml= "c", json="d"))]
+        b: A,
+    },
+}
+
+#[derive(Debug, PartialEq, Deserialize, Serialize)]
+struct SkipSerializingFields<A: default::Default> {
+    a: i8,
+    #[serde(skip_serializing, default)]
+    b: A,
+}
+
+#[test]
+fn test_default() {
+    let deserialized_value: Default = serde_json::from_str(&"{\"a1\":1,\"a2\":2}").unwrap();
+    assert_eq!(deserialized_value, Default { a1: 1, a2: 2 });
+
+    let deserialized_value: Default = serde_json::from_str(&"{\"a1\":1}").unwrap();
+    assert_eq!(deserialized_value, Default { a1: 1, a2: 0 });
+}
+
+#[test]
+fn test_rename() {
+    let value = Rename { a1: 1, a2: 2 };
+    let serialized_value = serde_json::to_string(&value).unwrap();
+    assert_eq!(serialized_value, "{\"a1\":1,\"a3\":2}");
+
+    let deserialized_value: Rename = serde_json::from_str(&serialized_value).unwrap();
+    assert_eq!(value, deserialized_value);
+}
+
+#[test]
+fn test_format_rename() {
+    let value = FormatRename { a1: 1, a2: 2 };
+    let serialized_value = serde_json::to_string(&value).unwrap();
+    assert_eq!(serialized_value, "{\"a1\":1,\"a5\":2}");
+
+    let deserialized_value = serde_json::from_str("{\"a1\":1,\"a5\":2}").unwrap();
+    assert_eq!(value, deserialized_value);
+}
+
+#[test]
+fn test_enum_format_rename() {
+    let s1 = String::new();
+    let value = SerEnum::Map { a: 0i8, b: s1 };
+    let serialized_value = serde_json::to_string(&value).unwrap();
+    let ans = "{\"Map\":{\"a\":0,\"d\":\"\"}}";
+    assert_eq!(serialized_value, ans);
+
+    let deserialized_value = serde_json::from_str(ans).unwrap();
+    assert_eq!(value, deserialized_value);
+}
+
+#[test]
+fn test_skip_serializing_fields() {
+    let value = SkipSerializingFields { a: 1, b: 2 };
+    let serialized_value = serde_json::to_string(&value).unwrap();
+    assert_eq!(serialized_value, "{\"a\":1}");
+
+    let deserialized_value: SkipSerializingFields<_> = serde_json::from_str(&serialized_value).unwrap();
+    assert_eq!(SkipSerializingFields { a: 1, b: 0 }, deserialized_value);
+}

serde_tests/tests/test_bytes.rs

@@ -1,12 +1,7 @@
-#![feature(custom_derive, plugin, test)]
-#![plugin(serde_macros)]
-
-extern crate test;
-extern crate serde;
-
+use serde;
 use serde::Serialize;
 use serde::bytes::{ByteBuf, Bytes};
-use serde::json;
+use serde_json;
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -14,13 +9,13 @@ use serde::json;
 struct Error;
 
 impl serde::de::Error for Error {
-    fn syntax_error() -> Error { Error }
+    fn syntax(_: &str) -> Error { Error }
 
-    fn end_of_stream_error() -> Error { Error }
+    fn end_of_stream() -> Error { Error }
 
-    fn unknown_field_error(_field: &str) -> Error { Error }
+    fn unknown_field(_field: &str) -> Error { Error }
 
-    fn missing_field_error(_field: &'static str) -> Error { Error }
+    fn missing_field(_field: &'static str) -> Error { Error }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -149,11 +144,11 @@ impl serde::Deserializer for BytesDeserializer {
 fn test_bytes_ser_json() {
     let buf = vec![];
     let bytes = Bytes::from(&buf);
-    assert_eq!(json::to_string(&bytes).unwrap(), "[]".to_string());
+    assert_eq!(serde_json::to_string(&bytes).unwrap(), "[]".to_string());
 
     let buf = vec![1, 2, 3];
     let bytes = Bytes::from(&buf);
-    assert_eq!(json::to_string(&bytes).unwrap(), "[1,2,3]".to_string());
+    assert_eq!(serde_json::to_string(&bytes).unwrap(), "[1,2,3]".to_string());
 }
 
 #[test]
@@ -172,10 +167,10 @@ fn test_bytes_ser_bytes() {
 #[test]
 fn test_byte_buf_ser_json() {
     let bytes = ByteBuf::new();
-    assert_eq!(json::to_string(&bytes).unwrap(), "[]".to_string());
+    assert_eq!(serde_json::to_string(&bytes).unwrap(), "[]".to_string());
 
     let bytes = ByteBuf::from(vec![1, 2, 3]);
-    assert_eq!(json::to_string(&bytes).unwrap(), "[1,2,3]".to_string());
+    assert_eq!(serde_json::to_string(&bytes).unwrap(), "[1,2,3]".to_string());
 }
 
 #[test]
@@ -194,11 +189,11 @@ fn test_byte_buf_ser_bytes() {
 #[test]
 fn test_byte_buf_de_json() {
     let bytes = ByteBuf::new();
-    let v: ByteBuf = json::from_str("[]").unwrap();
+    let v: ByteBuf = serde_json::from_str("[]").unwrap();
     assert_eq!(v, bytes);
 
     let bytes = ByteBuf::from(vec![1, 2, 3]);
-    let v: ByteBuf = json::from_str("[1, 2, 3]").unwrap();
+    let v: ByteBuf = serde_json::from_str("[1, 2, 3]").unwrap();
     assert_eq!(v, bytes);
 }
 

serde_tests/tests/test_de.rs

@@ -1,9 +1,3 @@
-#![feature(custom_derive, plugin, test)]
-#![plugin(serde_macros)]
-
-extern crate test;
-extern crate serde;
-
 use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
 use std::iter;
 use std::vec;
@@ -28,6 +22,7 @@ enum Token {
     Char(char),
     Str(&'static str),
     String(String),
+    Bytes(&'static [u8]),
 
     Option(bool),
 
@@ -44,6 +39,10 @@ enum Token {
     MapEnd,
 
     EnumStart(&'static str),
+    EnumUnit,
+    EnumNewtype,
+    EnumSeq,
+    EnumMap,
     EnumEnd,
 }
 
@@ -69,15 +68,15 @@ enum Error {
 }
 
 impl de::Error for Error {
-    fn syntax_error() -> Error { Error::SyntaxError }
+    fn syntax(_: &str) -> Error { Error::SyntaxError }
 
-    fn end_of_stream_error() -> Error { Error::EndOfStreamError }
+    fn end_of_stream() -> Error { Error::EndOfStreamError }
 
-    fn unknown_field_error(field: &str) -> Error {
+    fn unknown_field(field: &str) -> Error {
         Error::UnknownFieldError(field.to_string())
     }
 
-    fn missing_field_error(field: &'static str) -> Error {
+    fn missing_field(field: &'static str) -> Error {
         Error::MissingFieldError(field)
     }
 }
@@ -105,6 +104,7 @@ impl Deserializer for TokenDeserializer {
             Some(Token::Char(v)) => visitor.visit_char(v),
             Some(Token::Str(v)) => visitor.visit_str(v),
             Some(Token::String(v)) => visitor.visit_string(v),
+            Some(Token::Bytes(v)) => visitor.visit_bytes(v),
             Some(Token::Option(false)) => visitor.visit_none(),
             Some(Token::Option(true)) => visitor.visit_some(self),
             Some(Token::Unit) => visitor.visit_unit(),
@@ -149,7 +149,10 @@ impl Deserializer for TokenDeserializer {
         }
     }
 
-    fn visit_enum<V>(&mut self, name: &str, mut visitor: V) -> Result<V::Value, Error>
+    fn visit_enum<V>(&mut self,
+                     name: &str,
+                     _variants: &'static [&'static str],
+                     mut visitor: V) -> Result<V::Value, Error>
         where V: de::EnumVisitor,
     {
         match self.tokens.next() {
@@ -167,7 +170,7 @@ impl Deserializer for TokenDeserializer {
         }
     }
 
-    fn visit_named_unit<V>(&mut self, name: &str, visitor: V) -> Result<V::Value, Error>
+    fn visit_unit_struct<V>(&mut self, name: &str, visitor: V) -> Result<V::Value, Error>
         where V: de::Visitor,
     {
         match self.tokens.peek() {
@@ -184,7 +187,10 @@ impl Deserializer for TokenDeserializer {
         }
     }
 
-    fn visit_named_seq<V>(&mut self, name: &str, visitor: V) -> Result<V::Value, Error>
+    fn visit_tuple_struct<V>(&mut self,
+                             name: &str,
+                             _len: usize,
+                             visitor: V) -> Result<V::Value, Error>
         where V: de::Visitor,
     {
         match self.tokens.peek() {
@@ -201,7 +207,10 @@ impl Deserializer for TokenDeserializer {
         }
     }
 
-    fn visit_named_map<V>(&mut self, name: &str, visitor: V) -> Result<V::Value, Error>
+    fn visit_struct<V>(&mut self,
+                       name: &str,
+                       _fields: &'static [&'static str],
+                       visitor: V) -> Result<V::Value, Error>
         where V: de::Visitor,
     {
         match self.tokens.peek() {
@@ -321,32 +330,66 @@ impl<'a> de::VariantVisitor for TokenDeserializerVariantVisitor<'a> {
     }
 
     fn visit_unit(&mut self) -> Result<(), Error> {
-        de::Deserialize::deserialize(self.de)
+        match self.de.tokens.next() {
+            Some(Token::EnumUnit) => {
+                de::Deserialize::deserialize(self.de)
+            }
+            Some(_) => Err(Error::SyntaxError),
+            None => Err(Error::EndOfStreamError),
+        }
     }
 
-    fn visit_seq<V>(&mut self, visitor: V) -> Result<V::Value, Error>
-        where V: de::Visitor,
+    fn visit_newtype<T>(&mut self) -> Result<T, Self::Error>
+        where T: de::Deserialize,
     {
-        de::Deserializer::visit(self.de, visitor)
+        match self.de.tokens.next() {
+            Some(Token::EnumNewtype) => {
+                de::Deserialize::deserialize(self.de)
+            }
+            Some(_) => Err(Error::SyntaxError),
+            None => Err(Error::EndOfStreamError),
+        }
     }
 
-    fn visit_map<V>(&mut self, visitor: V) -> Result<V::Value, Error>
+    fn visit_tuple<V>(&mut self,
+                      _len: usize,
+                      visitor: V) -> Result<V::Value, Error>
         where V: de::Visitor,
     {
-        de::Deserializer::visit(self.de, visitor)
+        match self.de.tokens.next() {
+            Some(Token::EnumSeq) => {
+                de::Deserializer::visit(self.de, visitor)
+            }
+            Some(_) => Err(Error::SyntaxError),
+            None => Err(Error::EndOfStreamError),
+        }
+    }
+
+    fn visit_struct<V>(&mut self,
+                       _fields: &'static [&'static str],
+                       visitor: V) -> Result<V::Value, Error>
+        where V: de::Visitor,
+    {
+        match self.de.tokens.next() {
+            Some(Token::EnumMap) => {
+                de::Deserializer::visit(self.de, visitor)
+            }
+            Some(_) => Err(Error::SyntaxError),
+            None => Err(Error::EndOfStreamError),
+        }
     }
 }
 
 //////////////////////////////////////////////////////////////////////////
 
 #[derive(Copy, Clone, PartialEq, Debug, Deserialize)]
-struct NamedUnit;
+struct UnitStruct;
 
 #[derive(PartialEq, Debug, Deserialize)]
-struct NamedSeq(i32, i32, i32);
+struct TupleStruct(i32, i32, i32);
 
 #[derive(PartialEq, Debug, Deserialize)]
-struct NamedMap {
+struct Struct {
     a: i32,
     b: i32,
     c: i32,
@@ -355,6 +398,7 @@ struct NamedMap {
 #[derive(PartialEq, Debug, Deserialize)]
 enum Enum {
     Unit,
+    Simple(i32),
     Seq(i32, i32, i32),
     Map { a: i32, b: i32, c: i32 }
 }
@@ -492,6 +536,24 @@ declare_tests! {
             Token::I32(1),
         ],
     }
+    test_result {
+        Ok::<i32, i32>(0) => vec![
+            Token::EnumStart("Result"),
+                Token::Str("Ok"),
+
+                Token::EnumNewtype,
+                Token::I32(0),
+            Token::SeqEnd,
+        ],
+        Err::<i32, i32>(1) => vec![
+            Token::EnumStart("Result"),
+                Token::Str("Err"),
+
+                Token::EnumNewtype,
+                Token::I32(1),
+            Token::SeqEnd,
+        ],
+    }
     test_unit {
         () => vec![Token::Unit],
         () => vec![
@@ -504,19 +566,19 @@ declare_tests! {
             Token::SeqEnd,
         ],
     }
-    test_named_unit {
-        NamedUnit => vec![Token::Unit],
-        NamedUnit => vec![
-            Token::Name("NamedUnit"),
+    test_unit_struct {
+        UnitStruct => vec![Token::Unit],
+        UnitStruct => vec![
+            Token::Name("UnitStruct"),
             Token::Unit,
         ],
-        NamedUnit => vec![
+        UnitStruct => vec![
             Token::SeqStart(0),
             Token::SeqEnd,
         ],
     }
-    test_named_seq {
-        NamedSeq(1, 2, 3) => vec![
+    test_tuple_struct {
+        TupleStruct(1, 2, 3) => vec![
             Token::SeqStart(3),
                 Token::SeqSep,
                 Token::I32(1),
@@ -528,8 +590,8 @@ declare_tests! {
                 Token::I32(3),
             Token::SeqEnd,
         ],
-        NamedSeq(1, 2, 3) => vec![
-            Token::Name("NamedSeq"),
+        TupleStruct(1, 2, 3) => vec![
+            Token::Name("TupleStruct"),
             Token::SeqStart(3),
                 Token::SeqSep,
                 Token::I32(1),
@@ -652,6 +714,46 @@ declare_tests! {
             Token::SeqEnd,
         ],
     }
+    test_array {
+        [0; 0] => vec![
+            Token::Unit,
+        ],
+        [0; 0] => vec![
+            Token::SeqStart(0),
+            Token::SeqEnd,
+        ],
+        ([0; 0], [1], [2, 3]) => vec![
+            Token::SeqStart(3),
+                Token::SeqSep,
+                Token::SeqStart(0),
+                Token::SeqEnd,
+
+                Token::SeqSep,
+                Token::SeqStart(1),
+                    Token::SeqSep,
+                    Token::I32(1),
+                Token::SeqEnd,
+
+                Token::SeqSep,
+                Token::SeqStart(2),
+                    Token::SeqSep,
+                    Token::I32(2),
+
+                    Token::SeqSep,
+                    Token::I32(3),
+                Token::SeqEnd,
+            Token::SeqEnd,
+        ],
+        [0; 0] => vec![
+            Token::Name("Anything"),
+            Token::Unit,
+        ],
+        [0; 0] => vec![
+            Token::Name("Anything"),
+            Token::SeqStart(0),
+            Token::SeqEnd,
+        ],
+    }
     test_tuple {
         (1,) => vec![
             Token::SeqStart(1),
@@ -784,8 +886,8 @@ declare_tests! {
             Token::MapEnd,
         ],
     }
-    test_named_map {
-        NamedMap { a: 1, b: 2, c: 3 } => vec![
+    test_struct {
+        Struct { a: 1, b: 2, c: 3 } => vec![
             Token::MapStart(3),
                 Token::MapSep,
                 Token::Str("a"),
@@ -800,8 +902,8 @@ declare_tests! {
                 Token::I32(3),
             Token::MapEnd,
         ],
-        NamedMap { a: 1, b: 2, c: 3 } => vec![
-            Token::Name("NamedMap"),
+        Struct { a: 1, b: 2, c: 3 } => vec![
+            Token::Name("Struct"),
             Token::MapStart(3),
                 Token::MapSep,
                 Token::Str("a"),
@@ -821,14 +923,28 @@ declare_tests! {
         Enum::Unit => vec![
             Token::EnumStart("Enum"),
                 Token::Str("Unit"),
+
+                Token::EnumUnit,
                 Token::Unit,
             Token::EnumEnd,
         ],
     }
+    test_enum_simple {
+        Enum::Simple(1) => vec![
+            Token::EnumStart("Enum"),
+                Token::Str("Simple"),
+
+                Token::EnumNewtype,
+                Token::I32(1),
+            Token::EnumEnd,
+        ],
+    }
     test_enum_seq {
         Enum::Seq(1, 2, 3) => vec![
             Token::EnumStart("Enum"),
                 Token::Str("Seq"),
+
+                Token::EnumSeq,
                 Token::SeqStart(3),
                     Token::SeqSep,
                     Token::I32(1),
@@ -846,6 +962,8 @@ declare_tests! {
         Enum::Map { a: 1, b: 2, c: 3 } => vec![
             Token::EnumStart("Enum"),
                 Token::Str("Map"),
+
+                Token::EnumMap,
                 Token::MapStart(3),
                     Token::MapSep,
                     Token::Str("a"),
@@ -862,4 +980,24 @@ declare_tests! {
             Token::EnumEnd,
         ],
     }
+    test_enum_unit_usize {
+        Enum::Unit => vec![
+            Token::EnumStart("Enum"),
+                Token::Usize(0),
+
+                Token::EnumUnit,
+                Token::Unit,
+            Token::EnumEnd,
+        ],
+    }
+    test_enum_unit_bytes {
+        Enum::Unit => vec![
+            Token::EnumStart("Enum"),
+                Token::Bytes(b"Unit"),
+
+                Token::EnumUnit,
+                Token::Unit,
+            Token::EnumEnd,
+        ],
+    }
 }

serde_tests/tests/test_json.rs

@@ -1,16 +1,14 @@
-#![feature(custom_derive, plugin, test, custom_attribute)]
-#![plugin(serde_macros)]
-
-extern crate test;
-extern crate serde;
-
-use std::fmt::Debug;
 use std::collections::BTreeMap;
+use std::f64;
+use std::fmt::Debug;
+use std::i64;
+use std::marker::PhantomData;
+use std::u64;
 
 use serde::de;
 use serde::ser;
 
-use serde::json::{
+use serde_json::{
     self,
     Value,
     from_str,
@@ -18,7 +16,7 @@ use serde::json::{
     to_value,
 };
 
-use serde::json::error::{Error, ErrorCode};
+use serde_json::error::{Error, ErrorCode};
 
 macro_rules! treemap {
     ($($k:expr => $v:expr),*) => ({
@@ -33,7 +31,7 @@ enum Animal {
     Dog,
     Frog(String, Vec<isize>),
     Cat { age: usize, name: String },
-
+    AntHive(Vec<String>),
 }
 
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
@@ -54,11 +52,11 @@ fn test_encode_ok<T>(errors: &[(T, &str)])
     for &(ref value, out) in errors {
         let out = out.to_string();
 
-        let s = json::to_string(value).unwrap();
+        let s = serde_json::to_string(value).unwrap();
         assert_eq!(s, out);
 
         let v = to_value(&value);
-        let s = json::to_string(&v).unwrap();
+        let s = serde_json::to_string(&v).unwrap();
         assert_eq!(s, out);
     }
 }
@@ -69,11 +67,11 @@ fn test_pretty_encode_ok<T>(errors: &[(T, &str)])
     for &(ref value, out) in errors {
         let out = out.to_string();
 
-        let s = json::to_string_pretty(value).unwrap();
+        let s = serde_json::to_string_pretty(value).unwrap();
         assert_eq!(s, out);
 
         let v = to_value(&value);
-        let s = json::to_string_pretty(&v).unwrap();
+        let s = serde_json::to_string_pretty(&v).unwrap();
         assert_eq!(s, out);
     }
 }
@@ -87,12 +85,23 @@ fn test_write_null() {
     test_pretty_encode_ok(tests);
 }
 
+#[test]
+fn test_write_u64() {
+    let tests = &[
+        (3u64, "3"),
+        (u64::MAX, &u64::MAX.to_string()),
+    ];
+    test_encode_ok(tests);
+    test_pretty_encode_ok(tests);
+}
+
 #[test]
 fn test_write_i64() {
     let tests = &[
         (3i64, "3"),
         (-2i64, "-2"),
         (-1234i64, "-1234"),
+        (i64::MIN, &i64::MIN.to_string()),
     ];
     test_encode_ok(tests);
     test_pretty_encode_ok(tests);
@@ -100,11 +109,18 @@ fn test_write_i64() {
 
 #[test]
 fn test_write_f64() {
+    let min_string = format!("{:?}", f64::MIN);
+    let max_string = format!("{:?}", f64::MAX);
+    let epsilon_string = format!("{:?}", f64::EPSILON);
+
     let tests = &[
-        (3.0, "3.0"),
+        (3.0, "3"),
         (3.1, "3.1"),
         (-1.5, "-1.5"),
         (0.5, "0.5"),
+        (f64::MIN, &min_string),
+        (f64::MAX, &max_string),
+        (f64::EPSILON, &epsilon_string),
     ];
     test_encode_ok(tests);
     test_pretty_encode_ok(tests);
@@ -539,6 +555,10 @@ fn test_write_enum() {
             Animal::Cat { age: 5, name: "Kate".to_string() },
             "{\"Cat\":{\"age\":5,\"name\":\"Kate\"}}"
         ),
+        (
+            Animal::AntHive(vec!["Bob".to_string(), "Stuart".to_string()]),
+            "{\"AntHive\":[\"Bob\",\"Stuart\"]}",
+        ),
     ]);
 
     test_pretty_encode_ok(&[
@@ -622,7 +642,7 @@ fn test_write_option() {
     ]);
 }
 
-fn test_parse_ok<T>(errors: Vec<(&'static str, T)>)
+fn test_parse_ok<T>(errors: Vec<(&str, T)>)
     where T: Clone + Debug + PartialEq + ser::Serialize + de::Deserialize,
 {
     for (s, value) in errors {
@@ -708,6 +728,7 @@ fn test_parse_number_errors() {
         ("1e", Error::SyntaxError(ErrorCode::InvalidNumber, 1, 2)),
         ("1e+", Error::SyntaxError(ErrorCode::InvalidNumber, 1, 3)),
         ("1a", Error::SyntaxError(ErrorCode::TrailingCharacters, 1, 2)),
+        ("1e777777777777777777777777777", Error::SyntaxError(ErrorCode::InvalidNumber, 1, 22)),
     ]);
 }
 
@@ -717,28 +738,44 @@ fn test_parse_i64() {
         ("-2", -2),
         ("-1234", -1234),
         (" -1234 ", -1234),
+        (&i64::MIN.to_string(), i64::MIN),
+        (&i64::MAX.to_string(), i64::MAX),
     ]);
 }
 
 #[test]
 fn test_parse_u64() {
     test_parse_ok(vec![
+        ("0", 0u64),
         ("3", 3u64),
         ("1234", 1234),
+        (&u64::MAX.to_string(), u64::MAX),
     ]);
 }
 
 #[test]
 fn test_parse_f64() {
     test_parse_ok(vec![
+        ("0.0", 0.0f64),
         ("3.0", 3.0f64),
+        ("3.00", 3.0f64),
         ("3.1", 3.1),
         ("-1.2", -1.2),
         ("0.4", 0.4),
         ("0.4e5", 0.4e5),
+        ("0.4e+5", 0.4e5),
         ("0.4e15", 0.4e15),
-        ("0.4e-01", 0.4e-01),
-        (" 0.4e-01 ", 0.4e-01),
+        ("0.4e+15", 0.4e15),
+        ("0.4e-01", 0.4e-1),
+        (" 0.4e-01 ", 0.4e-1),
+        ("0.4e-001", 0.4e-1),
+        ("0.4e-0", 0.4e0),
+        ("0.00e00", 0.0),
+        ("0.00e+00", 0.0),
+        ("0.00e-00", 0.0),
+        (&format!("{:?}", (i64::MIN as f64) - 1.0), (i64::MIN as f64) - 1.0),
+        (&format!("{:?}", (u64::MAX as f64) + 1.0), (u64::MAX as f64) + 1.0),
+        (&format!("{:?}", f64::EPSILON), f64::EPSILON),
     ]);
 }
 
@@ -767,8 +804,8 @@ fn test_parse_string() {
 #[test]
 fn test_parse_list() {
     test_parse_err::<Vec<f64>>(vec![
-        ("[", Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 1, 1)),
-        ("[ ", Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 1, 2)),
+        ("[", Error::SyntaxError(ErrorCode::EOFWhileParsingList, 1, 1)),
+        ("[ ", Error::SyntaxError(ErrorCode::EOFWhileParsingList, 1, 2)),
         ("[1", Error::SyntaxError(ErrorCode::EOFWhileParsingList,  1, 2)),
         ("[1,", Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 1, 3)),
         ("[1,]", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 4)),
@@ -819,8 +856,8 @@ fn test_parse_list() {
 #[test]
 fn test_parse_object() {
     test_parse_err::<BTreeMap<String, u32>>(vec![
-        ("{", Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 1, 1)),
-        ("{ ", Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 1, 2)),
+        ("{", Error::SyntaxError(ErrorCode::EOFWhileParsingObject, 1, 1)),
+        ("{ ", Error::SyntaxError(ErrorCode::EOFWhileParsingObject, 1, 2)),
         ("{1", Error::SyntaxError(ErrorCode::KeyMustBeAString, 1, 2)),
         ("{ \"a\"", Error::SyntaxError(ErrorCode::EOFWhileParsingObject, 1, 5)),
         ("{\"a\"", Error::SyntaxError(ErrorCode::EOFWhileParsingObject, 1, 4)),
@@ -872,7 +909,7 @@ fn test_parse_struct() {
     test_parse_err::<Outer>(vec![
         ("5", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 1)),
         ("\"hello\"", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 7)),
-        ("{\"inner\": true}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 15)),
+        ("{\"inner\": true}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 14)),
     ]);
 
     test_parse_ok(vec![
@@ -895,7 +932,7 @@ fn test_parse_struct() {
                     Inner { a: (), b: 2, c: vec!["abc".to_string(), "xyz".to_string()] }
                 ]
             },
-        )
+        ),
     ]);
 
     let v: Outer = from_str("{}").unwrap();
@@ -906,6 +943,22 @@ fn test_parse_struct() {
             inner: vec![],
         }
     );
+
+    let v: Outer = from_str(
+        "[
+            [
+                [ null, 2, [\"abc\", \"xyz\"] ]
+            ]
+        ]").unwrap();
+
+    assert_eq!(
+        v,
+        Outer {
+            inner: vec![
+                Inner { a: (), b: 2, c: vec!["abc".to_string(), "xyz".to_string()] }
+            ],
+        }
+    );
 }
 
 #[test]
@@ -935,10 +988,10 @@ fn test_parse_enum_errors() {
         ("{}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 2)),
         ("{\"Dog\":", Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 1, 7)),
         ("{\"Dog\":}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 8)),
-        ("{\"unknown\":[]}", Error::SyntaxError(ErrorCode::UnknownField("unknown".to_string()), 1, 11)),
-        ("{\"Dog\":{}}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 9)),
-        ("{\"Frog\":{}}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 10)),
-        ("{\"Cat\":[]}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 9)),
+        ("{\"unknown\":[]}", Error::SyntaxError(ErrorCode::UnknownField("unknown".to_string()), 1, 10)),
+        ("{\"Dog\":{}}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 8)),
+        ("{\"Frog\":{}}", Error::SyntaxError(ErrorCode::ExpectedSomeValue, 1, 9)),
+        ("{\"Cat\":[]}", Error::SyntaxError(ErrorCode::EOFWhileParsingValue, 1, 9)),
     ]);
 }
 
@@ -963,6 +1016,10 @@ fn test_parse_enum() {
             " { \"Cat\" : { \"age\" : 5 , \"name\" : \"Kate\" } } ",
             Animal::Cat { age: 5, name: "Kate".to_string() },
         ),
+        (
+            " { \"AntHive\" : [\"Bob\", \"Stuart\"] } ",
+            Animal::AntHive(vec!["Bob".to_string(), "Stuart".to_string()]),
+        ),
     ]);
 
     test_parse_ok(vec![
@@ -1024,7 +1081,7 @@ fn test_missing_field() {
 fn test_missing_renamed_field() {
     #[derive(Debug, PartialEq, Deserialize)]
     struct Foo {
-        #[serde(rename_deserialize="y")]
+        #[serde(rename="y")]
         x: Option<u32>,
     }
 
@@ -1042,3 +1099,252 @@ fn test_missing_renamed_field() {
     ))).unwrap();
     assert_eq!(value, Foo { x: Some(5) });
 }
+
+#[test]
+fn test_missing_fmt_renamed_field() {
+    #[derive(Debug, PartialEq, Deserialize)]
+    struct Foo {
+        #[serde(rename(json="y"))]
+        x: Option<u32>,
+    }
+
+    let value: Foo = from_str("{}").unwrap();
+    assert_eq!(value, Foo { x: None });
+
+    let value: Foo = from_str("{\"y\": 5}").unwrap();
+    assert_eq!(value, Foo { x: Some(5) });
+
+    let value: Foo = from_value(Value::Object(treemap!())).unwrap();
+    assert_eq!(value, Foo { x: None });
+
+    let value : Foo = from_value(Value::Object(treemap!(
+        "y".to_string() => Value::I64(5)
+            ))).unwrap();
+    assert_eq!(value, Foo { x: Some(5) });
+}
+
+#[test]
+fn test_find_path() {
+    let obj: Value = serde_json::from_str(r#"{"x": {"a": 1}, "y": 2}"#).unwrap();
+
+    assert!(obj.find_path(&["x", "a"]).unwrap() == &Value::U64(1));
+    assert!(obj.find_path(&["y"]).unwrap() == &Value::U64(2));
+    assert!(obj.find_path(&["z"]).is_none());
+}
+
+#[test]
+fn test_lookup() {
+    let obj: Value = serde_json::from_str(r#"{"x": {"a": 1}, "y": 2}"#).unwrap();
+
+    assert!(obj.lookup("x.a").unwrap() == &Value::U64(1));
+    assert!(obj.lookup("y").unwrap() == &Value::U64(2));
+    assert!(obj.lookup("z").is_none());
+}
+
+#[test]
+fn test_serialize_seq_with_no_len() {
+    #[derive(Clone, Debug, PartialEq)]
+    struct MyVec<T>(Vec<T>);
+
+    impl<T> ser::Serialize for MyVec<T>
+        where T: ser::Serialize,
+    {
+        #[inline]
+        fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+            where S: ser::Serializer,
+        {
+            serializer.visit_seq(ser::impls::SeqIteratorVisitor::new(self.0.iter(), None))
+        }
+    }
+
+    struct Visitor<T> {
+        marker: PhantomData<MyVec<T>>,
+    }
+
+    impl<T> de::Visitor for Visitor<T>
+        where T: de::Deserialize,
+    {
+        type Value = MyVec<T>;
+
+        #[inline]
+        fn visit_unit<E>(&mut self) -> Result<MyVec<T>, E>
+            where E: de::Error,
+        {
+            Ok(MyVec(Vec::new()))
+        }
+
+        #[inline]
+        fn visit_seq<V>(&mut self, mut visitor: V) -> Result<MyVec<T>, V::Error>
+            where V: de::SeqVisitor,
+        {
+            let mut values = Vec::new();
+
+            while let Some(value) = try!(visitor.visit()) {
+                values.push(value);
+            }
+
+            try!(visitor.end());
+
+            Ok(MyVec(values))
+        }
+    }
+
+    impl<T> de::Deserialize for MyVec<T>
+        where T: de::Deserialize,
+    {
+        fn deserialize<D>(deserializer: &mut D) -> Result<MyVec<T>, D::Error>
+            where D: de::Deserializer,
+        {
+            deserializer.visit_map(Visitor { marker: PhantomData })
+        }
+    }
+
+    let mut vec = Vec::new();
+    vec.push(MyVec(Vec::new()));
+    vec.push(MyVec(Vec::new()));
+    let vec: MyVec<MyVec<u32>> = MyVec(vec);
+
+    test_encode_ok(&[
+        (
+            vec.clone(),
+            "[[],[]]",
+        ),
+    ]);
+
+    let s = serde_json::to_string_pretty(&vec).unwrap();
+    assert_eq!(
+        s,
+        concat!(
+            "[\n",
+            "  [\n",
+            "  ],\n",
+            "  [\n",
+            "  ]\n",
+            "]"
+        )
+    );
+}
+
+#[test]
+fn test_serialize_map_with_no_len() {
+    #[derive(Clone, Debug, PartialEq)]
+    struct Map<K, V>(BTreeMap<K, V>);
+
+    impl<K, V> ser::Serialize for Map<K, V>
+        where K: ser::Serialize + Ord,
+              V: ser::Serialize,
+    {
+        #[inline]
+        fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
+            where S: ser::Serializer,
+        {
+            serializer.visit_map(ser::impls::MapIteratorVisitor::new(self.0.iter(), None))
+        }
+    }
+
+    struct Visitor<K, V> {
+        marker: PhantomData<Map<K, V>>,
+    }
+
+    impl<K, V> de::Visitor for Visitor<K, V>
+        where K: de::Deserialize + Eq + Ord,
+              V: de::Deserialize,
+    {
+        type Value = Map<K, V>;
+
+        #[inline]
+        fn visit_unit<E>(&mut self) -> Result<Map<K, V>, E>
+            where E: de::Error,
+        {
+            Ok(Map(BTreeMap::new()))
+        }
+
+        #[inline]
+        fn visit_map<Visitor>(&mut self, mut visitor: Visitor) -> Result<Map<K, V>, Visitor::Error>
+            where Visitor: de::MapVisitor,
+        {
+            let mut values = BTreeMap::new();
+
+            while let Some((key, value)) = try!(visitor.visit()) {
+                values.insert(key, value);
+            }
+
+            try!(visitor.end());
+
+            Ok(Map(values))
+        }
+    }
+
+    impl<K, V> de::Deserialize for Map<K, V>
+        where K: de::Deserialize + Eq + Ord,
+              V: de::Deserialize,
+    {
+        fn deserialize<D>(deserializer: &mut D) -> Result<Map<K, V>, D::Error>
+            where D: de::Deserializer,
+        {
+            deserializer.visit_map(Visitor { marker: PhantomData })
+        }
+    }
+
+    let mut map = BTreeMap::new();
+    map.insert("a", Map(BTreeMap::new()));
+    map.insert("b", Map(BTreeMap::new()));
+    let map: Map<_, Map<u32, u32>> = Map(map);
+
+    test_encode_ok(&[
+        (
+            map.clone(),
+            "{\"a\":{},\"b\":{}}",
+        ),
+    ]);
+
+    let s = serde_json::to_string_pretty(&map).unwrap();
+    assert_eq!(
+        s,
+        concat!(
+            "{\n",
+            "  \"a\": {\n",
+            "  },\n",
+            "  \"b\": {\n",
+            "  }\n",
+            "}"
+        )
+    );
+}
+
+#[test]
+fn test_deserialize_from_stream() {
+    use std::net;
+    use std::io::Read;
+    use std::thread;
+    use serde::Deserialize;
+
+    #[derive(Debug, PartialEq, Serialize, Deserialize)]
+    struct Message {
+        message: String,
+    }
+
+    let l = net::TcpListener::bind("localhost:20000").unwrap();
+
+    thread::spawn(|| {
+        let l = l;
+        for stream in l.incoming() {
+            let mut stream = stream.unwrap();
+            let read_stream = stream.try_clone().unwrap();
+
+            let mut de = serde_json::Deserializer::new(read_stream.bytes());
+            let request = Message::deserialize(&mut de).unwrap();
+            let response = Message { message: request.message };
+            serde_json::to_writer(&mut stream, &response).unwrap();
+        }
+    });
+
+    let mut stream = net::TcpStream::connect("localhost:20000").unwrap();
+    let request = Message { message: "hi there".to_string() };
+    serde_json::to_writer(&mut stream, &request).unwrap();
+
+    let mut de = serde_json::Deserializer::new(stream.bytes());
+    let response = Message::deserialize(&mut de).unwrap();
+
+    assert_eq!(request, response);
+}

serde_tests/tests/test_json_builder.rs

@@ -1,9 +1,7 @@
-extern crate serde;
-
 use std::collections::BTreeMap;
 
-use serde::json::value::Value;
-use serde::json::builder::{ArrayBuilder, ObjectBuilder};
+use serde_json::value::Value;
+use serde_json::builder::{ArrayBuilder, ObjectBuilder};
 
 #[test]
 fn test_array_builder() {

serde_tests/tests/test_macros.rs

@@ -1,10 +1,5 @@
-#![feature(custom_derive, plugin)]
-#![plugin(serde_macros)]
-
-extern crate serde;
-
 use std::collections::BTreeMap;
-use serde::json::{self, Value};
+use serde_json::{self, Value};
 
 macro_rules! btreemap {
     () => {
@@ -128,24 +123,51 @@ enum DeEnum<B, C: /* Trait */, D> /* where D: Trait */ {
     },
 }
 
+#[derive(Serialize)]
+enum Lifetimes<'a> {
+    LifetimeSeq(&'a i32),
+    NoLifetimeSeq(i32),
+    LifetimeMap { a: &'a i32 },
+    NoLifetimeMap { a: i32 },
+}
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+pub struct GenericStruct<T> {
+    x: T,
+}
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+pub struct GenericNewtypeStruct<T>(T);
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+pub struct GenericTupleStruct<T, U>(T, U);
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+pub enum GenericEnum<T, U> {
+    Unit,
+    Newtype(T),
+    Seq(T, U),
+    Map { x: T, y: U },
+}
+
 #[test]
 fn test_named_unit() {
     let named_unit = NamedUnit;
 
     assert_eq!(
-        json::to_string(&named_unit).unwrap(),
+        serde_json::to_string(&named_unit).unwrap(),
         "null".to_string()
     );
 
     assert_eq!(
-        json::to_value(&named_unit),
+        serde_json::to_value(&named_unit),
         Value::Null
     );
 
-    let v: NamedUnit = json::from_str("null").unwrap();
+    let v: NamedUnit = serde_json::from_str("null").unwrap();
     assert_eq!(v, named_unit);
 
-    let v: NamedUnit = json::from_value(Value::Null).unwrap();
+    let v: NamedUnit = serde_json::from_value(Value::Null).unwrap();
     assert_eq!(v, named_unit);
 }
 
@@ -157,25 +179,25 @@ fn test_ser_named_tuple() {
     let named_tuple = SerNamedTuple(&a, &mut b, c);
 
     assert_eq!(
-        json::to_string(&named_tuple).unwrap(),
+        serde_json::to_string(&named_tuple).unwrap(),
         "[5,6,7]"
     );
 
     assert_eq!(
-        json::to_value(&named_tuple),
+        serde_json::to_value(&named_tuple),
         Value::Array(vec![Value::U64(5), Value::U64(6), Value::U64(7)])
     );
 }
 
 #[test]
 fn test_de_named_tuple() {
-    let v: DeNamedTuple<i32, i32, i32> = json::from_str("[1,2,3]").unwrap();
+    let v: DeNamedTuple<i32, i32, i32> = serde_json::from_str("[1,2,3]").unwrap();
     assert_eq!(
         v,
         DeNamedTuple(1, 2, 3)
     );
 
-    let v: Value = json::from_str("[1,2,3]").unwrap();
+    let v: Value = serde_json::from_str("[1,2,3]").unwrap();
     assert_eq!(
         v,
         Value::Array(vec![
@@ -198,12 +220,12 @@ fn test_ser_named_map() {
     };
 
     assert_eq!(
-        json::to_string(&named_map).unwrap(),
+        serde_json::to_string(&named_map).unwrap(),
         "{\"a\":5,\"b\":6,\"c\":7}"
     );
 
     assert_eq!(
-        json::to_value(&named_map),
+        serde_json::to_value(&named_map),
         Value::Object(btreemap![
             "a".to_string() => Value::U64(5),
             "b".to_string() => Value::U64(6),
@@ -220,12 +242,12 @@ fn test_de_named_map() {
         c: 7,
     };
 
-    let v2: DeNamedMap<i32, i32, i32> = json::from_str(
+    let v2: DeNamedMap<i32, i32, i32> = serde_json::from_str(
         "{\"a\":5,\"b\":6,\"c\":7}"
     ).unwrap();
     assert_eq!(v, v2);
 
-    let v2 = json::from_value(Value::Object(btreemap![
+    let v2 = serde_json::from_value(Value::Object(btreemap![
         "a".to_string() => Value::U64(5),
         "b".to_string() => Value::U64(6),
         "c".to_string() => Value::U64(7)
@@ -236,12 +258,12 @@ fn test_de_named_map() {
 #[test]
 fn test_ser_enum_unit() {
     assert_eq!(
-        json::to_string(&SerEnum::Unit::<u32, u32, u32>).unwrap(),
+        serde_json::to_string(&SerEnum::Unit::<u32, u32, u32>).unwrap(),
         "{\"Unit\":[]}"
     );
 
     assert_eq!(
-        json::to_value(&SerEnum::Unit::<u32, u32, u32>),
+        serde_json::to_value(&SerEnum::Unit::<u32, u32, u32>),
         Value::Object(btreemap!(
             "Unit".to_string() => Value::Array(vec![]))
         )
@@ -258,7 +280,7 @@ fn test_ser_enum_seq() {
     //let f = 6;
 
     assert_eq!(
-        json::to_string(&SerEnum::Seq(
+        serde_json::to_string(&SerEnum::Seq(
             a,
             b,
             &c,
@@ -270,7 +292,7 @@ fn test_ser_enum_seq() {
     );
 
     assert_eq!(
-        json::to_value(&SerEnum::Seq(
+        serde_json::to_value(&SerEnum::Seq(
             a,
             b,
             &c,
@@ -301,7 +323,7 @@ fn test_ser_enum_map() {
     //let f = 6;
 
     assert_eq!(
-        json::to_string(&SerEnum::Map {
+        serde_json::to_string(&SerEnum::Map {
             a: a,
             b: b,
             c: &c,
@@ -313,7 +335,7 @@ fn test_ser_enum_map() {
     );
 
     assert_eq!(
-        json::to_value(&SerEnum::Map {
+        serde_json::to_value(&SerEnum::Map {
             a: a,
             b: b,
             c: &c,
@@ -336,13 +358,13 @@ fn test_ser_enum_map() {
 
 #[test]
 fn test_de_enum_unit() {
-    let v: DeEnum<_, _, _> = json::from_str("{\"Unit\":[]}").unwrap();
+    let v: DeEnum<_, _, _> = serde_json::from_str("{\"Unit\":[]}").unwrap();
     assert_eq!(
         v,
         DeEnum::Unit::<u32, u32, u32>
     );
 
-    let v: DeEnum<_, _, _> = json::from_value(Value::Object(btreemap!(
+    let v: DeEnum<_, _, _> = serde_json::from_value(Value::Object(btreemap!(
         "Unit".to_string() => Value::Array(vec![]))
     )).unwrap();
     assert_eq!(
@@ -360,7 +382,7 @@ fn test_de_enum_seq() {
     let e = 5;
     //let f = 6;
 
-    let v: DeEnum<_, _, _> = json::from_str("{\"Seq\":[1,2,3,5]}").unwrap();
+    let v: DeEnum<_, _, _> = serde_json::from_str("{\"Seq\":[1,2,3,5]}").unwrap();
     assert_eq!(
         v,
         DeEnum::Seq(
@@ -373,7 +395,7 @@ fn test_de_enum_seq() {
         )
     );
 
-    let v: DeEnum<_, _, _> = json::from_value(Value::Object(btreemap!(
+    let v: DeEnum<_, _, _> = serde_json::from_value(Value::Object(btreemap!(
         "Seq".to_string() => Value::Array(vec![
             Value::U64(1),
             Value::U64(2),
@@ -405,7 +427,7 @@ fn test_de_enum_map() {
     let e = 5;
     //let f = 6;
 
-    let v: DeEnum<_, _, _> = json::from_str(
+    let v: DeEnum<_, _, _> = serde_json::from_str(
         "{\"Map\":{\"a\":1,\"b\":2,\"c\":3,\"e\":5}}"
     ).unwrap();
     assert_eq!(
@@ -420,7 +442,7 @@ fn test_de_enum_map() {
         }
     );
 
-    let v: DeEnum<_, _, _> = json::from_value(Value::Object(btreemap!(
+    let v: DeEnum<_, _, _> = serde_json::from_value(Value::Object(btreemap!(
         "Map".to_string() => Value::Object(btreemap![
             "a".to_string() => Value::U64(1),
             "b".to_string() => Value::U64(2),
@@ -443,3 +465,72 @@ fn test_de_enum_map() {
         }
     );
 }
+
+#[test]
+fn test_lifetimes() {
+    let value = 5;
+    let lifetime = Lifetimes::LifetimeSeq(&value);
+    assert_eq!(
+        serde_json::to_string(&lifetime).unwrap(),
+        "{\"LifetimeSeq\":5}"
+    );
+
+    let lifetime = Lifetimes::NoLifetimeSeq(5);
+    assert_eq!(
+        serde_json::to_string(&lifetime).unwrap(),
+        "{\"NoLifetimeSeq\":5}"
+    );
+
+    let value = 5;
+    let lifetime = Lifetimes::LifetimeMap { a: &value };
+    assert_eq!(
+        serde_json::to_string(&lifetime).unwrap(),
+        "{\"LifetimeMap\":{\"a\":5}}"
+    );
+
+    let lifetime = Lifetimes::NoLifetimeMap { a: 5 };
+    assert_eq!(
+        serde_json::to_string(&lifetime).unwrap(),
+        "{\"NoLifetimeMap\":{\"a\":5}}"
+    );
+}
+
+macro_rules! declare_tests {
+    ($($name:ident { $($ty:ty : $value:expr => $str:expr,)+ })+) => {
+        $(
+            #[test]
+            fn $name() {
+                $(
+                    let value: $ty = $value;
+
+                    let string = serde_json::to_string(&value).unwrap();
+                    assert_eq!(string, $str);
+
+                    let expected: $ty = serde_json::from_str(&string).unwrap();
+                    assert_eq!(value, expected);
+                )+
+            }
+        )+
+    }
+}
+
+declare_tests! {
+    test_generic_struct {
+        GenericStruct<u32> : GenericStruct { x: 5 } => "{\"x\":5}",
+    }
+    test_generic_newtype_struct {
+        GenericNewtypeStruct<u32> : GenericNewtypeStruct(5) => "5",
+    }
+    test_generic_tuple_struct {
+        GenericTupleStruct<u32, u32> : GenericTupleStruct(5, 6) => "[5,6]",
+    }
+    test_generic_enum_newtype {
+        GenericEnum<u32, u32> : GenericEnum::Newtype(5) => "{\"Newtype\":5}",
+    }
+    test_generic_enum_seq {
+        GenericEnum<u32, u32> : GenericEnum::Seq(5, 6) => "{\"Seq\":[5,6]}",
+    }
+    test_generic_enum_map {
+        GenericEnum<u32, u32> : GenericEnum::Map { x: 5, y: 6 } => "{\"Map\":{\"x\":5,\"y\":6}}",
+    }
+}

serde_tests/tests/test_ser.rs

@@ -1,9 +1,3 @@
-#![feature(custom_derive, plugin, test)]
-#![plugin(serde_macros)]
-
-extern crate test;
-extern crate serde;
-
 use std::vec;
 use std::collections::BTreeMap;
 
@@ -30,17 +24,19 @@ pub enum Token<'a> {
     Option(bool),
 
     Unit,
-    NamedUnit(&'a str),
+    UnitStruct(&'a str),
     EnumUnit(&'a str, &'a str),
 
+    EnumNewtype(&'a str, &'a str),
+
     SeqStart(Option<usize>),
-    NamedSeqStart(&'a str, Option<usize>),
+    TupleStructStart(&'a str, Option<usize>),
     EnumSeqStart(&'a str, &'a str, Option<usize>),
     SeqSep,
     SeqEnd,
 
     MapStart(Option<usize>),
-    NamedMapStart(&'a str, Option<usize>),
+    StructStart(&'a str, Option<usize>),
     EnumMapStart(&'a str, &'a str, Option<usize>),
     MapSep,
     MapEnd,
@@ -86,13 +82,31 @@ impl<'a> Serializer for AssertSerializer<'a> {
         Ok(())
     }
 
-    fn visit_named_unit(&mut self, name: &str) -> Result<(), ()> {
-        assert_eq!(self.iter.next().unwrap(), Token::NamedUnit(name));
+    fn visit_newtype_variant<T>(&mut self,
+                                name: &str,
+                                _variant_index: usize,
+                                variant: &str,
+                                value: T) -> Result<(), ()>
+        where T: Serialize,
+    {
+        assert_eq!(self.iter.next(), Some(Token::EnumNewtype(name, variant)));
+        value.serialize(self)
+    }
+
+    fn visit_unit_struct(&mut self, name: &str) -> Result<(), ()> {
+        assert_eq!(self.iter.next().unwrap(), Token::UnitStruct(name));
         Ok(())
     }
 
-    fn visit_enum_unit(&mut self, name: &str, variant: &str) -> Result<(), ()> {
-        assert_eq!(self.iter.next().unwrap(), Token::EnumUnit(name, variant));
+    fn visit_unit_variant(&mut self,
+                          name: &str,
+                          _variant_index: usize,
+                          variant: &str) -> Result<(), ()> {
+        assert_eq!(
+            self.iter.next().unwrap(),
+            Token::EnumUnit(name, variant)
+        );
+
         Ok(())
     }
 
@@ -194,25 +208,32 @@ impl<'a> Serializer for AssertSerializer<'a> {
         self.visit_sequence(visitor)
     }
 
-    fn visit_named_seq<V>(&mut self, name: &str, visitor: V) -> Result<(), ()>
+    fn visit_tuple_struct<V>(&mut self, name: &str, visitor: V) -> Result<(), ()>
         where V: SeqVisitor
     {
         let len = visitor.len();
 
-        assert_eq!(self.iter.next().unwrap(), Token::NamedSeqStart(name, len));
+        assert_eq!(
+            self.iter.next().unwrap(),
+            Token::TupleStructStart(name, len)
+        );
 
         self.visit_sequence(visitor)
     }
 
-    fn visit_enum_seq<V>(&mut self,
-                         name: &str,
-                         variant: &str,
-                         visitor: V) -> Result<(), ()>
+    fn visit_tuple_variant<V>(&mut self,
+                              name: &str,
+                              _variant_index: usize,
+                              variant: &str,
+                              visitor: V) -> Result<(), ()>
         where V: SeqVisitor
     {
         let len = visitor.len();
 
-        assert_eq!(self.iter.next().unwrap(), Token::EnumSeqStart(name, variant, len));
+        assert_eq!(
+            self.iter.next().unwrap(),
+            Token::EnumSeqStart(name, variant, len)
+        );
 
         self.visit_sequence(visitor)
     }
@@ -234,22 +255,32 @@ impl<'a> Serializer for AssertSerializer<'a> {
         self.visit_mapping(visitor)
     }
 
-    fn visit_named_map<V>(&mut self, name: &str, visitor: V) -> Result<(), ()>
+    fn visit_struct<V>(&mut self, name: &str, visitor: V) -> Result<(), ()>
         where V: MapVisitor
     {
         let len = visitor.len();
 
-        assert_eq!(self.iter.next().unwrap(), Token::NamedMapStart(name, len));
+        assert_eq!(
+            self.iter.next().unwrap(),
+            Token::StructStart(name, len)
+        );
 
         self.visit_mapping(visitor)
     }
 
-    fn visit_enum_map<V>(&mut self, name: &str, variant: &str, visitor: V) -> Result<(), ()>
+    fn visit_struct_variant<V>(&mut self,
+                               name: &str,
+                               _variant_index: usize,
+                               variant: &str,
+                               visitor: V) -> Result<(), ()>
         where V: MapVisitor
     {
         let len = visitor.len();
 
-        assert_eq!(self.iter.next().unwrap(), Token::EnumMapStart(name, variant, len));
+        assert_eq!(
+            self.iter.next().unwrap(),
+            Token::EnumMapStart(name, variant, len)
+        );
 
         self.visit_mapping(visitor)
     }
@@ -268,13 +299,13 @@ impl<'a> Serializer for AssertSerializer<'a> {
 //////////////////////////////////////////////////////////////////////////
 
 #[derive(Serialize)]
-struct NamedUnit;
+struct UnitStruct;
 
 #[derive(Serialize)]
-struct NamedSeq(i32, i32, i32);
+struct TupleStruct(i32, i32, i32);
 
 #[derive(Serialize)]
-struct NamedMap {
+struct Struct {
     a: i32,
     b: i32,
     c: i32,
@@ -283,6 +314,7 @@ struct NamedMap {
 #[derive(Serialize)]
 enum Enum {
     Unit,
+    One(i32),
     Seq(i32, i32),
     Map { a: i32, b: i32 },
 }
@@ -362,6 +394,16 @@ declare_tests! {
             Token::I32(1),
         ],
     }
+    test_result {
+        Ok::<i32, i32>(0) => vec![
+            Token::EnumNewtype("Result", "Ok"),
+            Token::I32(0),
+        ],
+        Err::<i32, i32>(1) => vec![
+            Token::EnumNewtype("Result", "Err"),
+            Token::I32(1),
+        ],
+    }
     test_slice {
         &[0][..0] => vec![
             Token::SeqStart(Some(0)),
@@ -380,6 +422,24 @@ declare_tests! {
             Token::SeqEnd,
         ],
     }
+    test_array {
+        [0; 0] => vec![
+            Token::SeqStart(Some(0)),
+            Token::SeqEnd,
+        ],
+        [1, 2, 3] => vec![
+            Token::SeqStart(Some(3)),
+                Token::SeqSep,
+                Token::I32(1),
+
+                Token::SeqSep,
+                Token::I32(2),
+
+                Token::SeqSep,
+                Token::I32(3),
+            Token::SeqEnd,
+        ],
+    }
     test_vec {
         Vec::<isize>::new() => vec![
             Token::SeqStart(Some(0)),
@@ -468,12 +528,12 @@ declare_tests! {
             Token::MapEnd,
         ],
     }
-    test_named_unit {
-        NamedUnit => vec![Token::NamedUnit("NamedUnit")],
+    test_unit_struct {
+        UnitStruct => vec![Token::UnitStruct("UnitStruct")],
     }
-    test_named_seq {
-        NamedSeq(1, 2, 3) => vec![
-            Token::NamedSeqStart("NamedSeq", Some(3)),
+    test_tuple_struct {
+        TupleStruct(1, 2, 3) => vec![
+            Token::TupleStructStart("TupleStruct", Some(3)),
                 Token::SeqSep,
                 Token::I32(1),
 
@@ -485,9 +545,9 @@ declare_tests! {
             Token::SeqEnd,
         ],
     }
-    test_named_map {
-        NamedMap { a: 1, b: 2, c: 3 } => vec![
-            Token::NamedMapStart("NamedMap", Some(3)),
+    test_struct {
+        Struct { a: 1, b: 2, c: 3 } => vec![
+            Token::StructStart("Struct", Some(3)),
                 Token::MapSep,
                 Token::Str("a"),
                 Token::I32(1),
@@ -504,6 +564,7 @@ declare_tests! {
     }
     test_enum {
         Enum::Unit => vec![Token::EnumUnit("Enum", "Unit")],
+        Enum::One(42) => vec![Token::EnumNewtype("Enum", "One"), Token::I32(42)],
         Enum::Seq(1, 2) => vec![
             Token::EnumSeqStart("Enum", "Seq", Some(2)),
                 Token::SeqSep,

src/de/impls.rs

@@ -1,686 +0,0 @@
-use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
-use std::hash::Hash;
-use std::marker::PhantomData;
-use std::path;
-use std::rc::Rc;
-use std::sync::Arc;
-
-use num::FromPrimitive;
-
-use de::{
-    Deserialize,
-    Deserializer,
-    Error,
-    MapVisitor,
-    SeqVisitor,
-    Visitor,
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub struct UnitVisitor;
-
-impl Visitor for UnitVisitor {
-    type Value = ();
-
-    fn visit_unit<E>(&mut self) -> Result<(), E>
-        where E: Error,
-    {
-        Ok(())
-    }
-
-    fn visit_seq<V>(&mut self, mut visitor: V) -> Result<(), V::Error>
-        where V: SeqVisitor,
-    {
-        visitor.end()
-    }
-}
-
-impl Deserialize for () {
-    fn deserialize<D>(deserializer: &mut D) -> Result<(), D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(UnitVisitor)
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-struct BoolVisitor;
-
-impl Visitor for BoolVisitor {
-    type Value = bool;
-
-    fn visit_bool<E>(&mut self, v: bool) -> Result<bool, E>
-        where E: Error,
-    {
-        Ok(v)
-    }
-}
-
-impl Deserialize for bool {
-    fn deserialize<D>(deserializer: &mut D) -> Result<bool, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(BoolVisitor)
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-macro_rules! impl_deserialize_num_method {
-    ($src_ty:ty, $method:ident, $from_method:ident) => {
-        #[inline]
-        fn $method<E>(&mut self, v: $src_ty) -> Result<T, E>
-            where E: Error,
-        {
-            match FromPrimitive::$from_method(v) {
-                Some(v) => Ok(v),
-                None => Err(Error::syntax_error()),
-            }
-        }
-    }
-}
-
-pub struct PrimitiveVisitor<T> {
-    marker: PhantomData<T>,
-}
-
-impl<T> PrimitiveVisitor<T> {
-    #[inline]
-    pub fn new() -> Self {
-        PrimitiveVisitor {
-            marker: PhantomData,
-        }
-    }
-}
-
-impl<
-    T: Deserialize + FromPrimitive
-> Visitor for PrimitiveVisitor<T> {
-    type Value = T;
-
-    impl_deserialize_num_method!(isize, visit_isize, from_isize);
-    impl_deserialize_num_method!(i8, visit_i8, from_i8);
-    impl_deserialize_num_method!(i16, visit_i16, from_i16);
-    impl_deserialize_num_method!(i32, visit_i32, from_i32);
-    impl_deserialize_num_method!(i64, visit_i64, from_i64);
-    impl_deserialize_num_method!(usize, visit_usize, from_usize);
-    impl_deserialize_num_method!(u8, visit_u8, from_u8);
-    impl_deserialize_num_method!(u16, visit_u16, from_u16);
-    impl_deserialize_num_method!(u32, visit_u32, from_u32);
-    impl_deserialize_num_method!(u64, visit_u64, from_u64);
-    impl_deserialize_num_method!(f32, visit_f32, from_f32);
-    impl_deserialize_num_method!(f64, visit_f64, from_f64);
-}
-
-macro_rules! impl_deserialize_num {
-    ($ty:ty) => {
-        impl Deserialize for $ty {
-            #[inline]
-            fn deserialize<D>(deserializer: &mut D) -> Result<$ty, D::Error>
-                where D: Deserializer,
-            {
-                deserializer.visit(PrimitiveVisitor::new())
-            }
-        }
-    }
-}
-
-impl_deserialize_num!(isize);
-impl_deserialize_num!(i8);
-impl_deserialize_num!(i16);
-impl_deserialize_num!(i32);
-impl_deserialize_num!(i64);
-impl_deserialize_num!(usize);
-impl_deserialize_num!(u8);
-impl_deserialize_num!(u16);
-impl_deserialize_num!(u32);
-impl_deserialize_num!(u64);
-impl_deserialize_num!(f32);
-impl_deserialize_num!(f64);
-
-///////////////////////////////////////////////////////////////////////////////
-
-struct CharVisitor;
-
-impl Visitor for CharVisitor {
-    type Value = char;
-
-    #[inline]
-    fn visit_char<E>(&mut self, v: char) -> Result<char, E>
-        where E: Error,
-    {
-        Ok(v)
-    }
-
-    #[inline]
-    fn visit_str<E>(&mut self, v: &str) -> Result<char, E>
-        where E: Error,
-    {
-        let mut iter = v.chars();
-        if let Some(v) = iter.next() {
-            if iter.next().is_some() {
-                Err(Error::syntax_error())
-            } else {
-                Ok(v)
-            }
-        } else {
-            Err(Error::end_of_stream_error())
-        }
-    }
-}
-
-impl Deserialize for char {
-    #[inline]
-    fn deserialize<D>(deserializer: &mut D) -> Result<char, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(CharVisitor)
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-struct StringVisitor;
-
-impl Visitor for StringVisitor {
-    type Value = String;
-
-    fn visit_str<E>(&mut self, v: &str) -> Result<String, E>
-        where E: Error,
-    {
-        Ok(v.to_string())
-    }
-
-    fn visit_string<E>(&mut self, v: String) -> Result<String, E>
-        where E: Error,
-    {
-        Ok(v)
-    }
-}
-
-impl Deserialize for String {
-    fn deserialize<D>(deserializer: &mut D) -> Result<String, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(StringVisitor)
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-struct OptionVisitor<T> {
-    marker: PhantomData<T>,
-}
-
-impl<
-    T: Deserialize,
-> Visitor for OptionVisitor<T> {
-    type Value = Option<T>;
-
-    #[inline]
-    fn visit_none<E>(&mut self) -> Result<Option<T>, E>
-        where E: Error,
-    {
-        Ok(None)
-    }
-
-    #[inline]
-    fn visit_some<D>(&mut self, deserializer: &mut D) -> Result<Option<T>, D::Error>
-        where D: Deserializer,
-    {
-        Ok(Some(try!(Deserialize::deserialize(deserializer))))
-    }
-}
-
-impl<T> Deserialize for Option<T> where T: Deserialize {
-    fn deserialize<D>(deserializer: &mut D) -> Result<Option<T>, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit_option(OptionVisitor { marker: PhantomData })
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub struct BTreeSetVisitor<T> {
-    marker: PhantomData<T>,
-}
-
-impl<T> BTreeSetVisitor<T> {
-    pub fn new() -> Self {
-        BTreeSetVisitor {
-            marker: PhantomData,
-        }
-    }
-}
-
-impl<T> Visitor for BTreeSetVisitor<T>
-    where T: Deserialize + Eq + Ord,
-{
-    type Value = BTreeSet<T>;
-
-    #[inline]
-    fn visit_unit<E>(&mut self) -> Result<BTreeSet<T>, E>
-        where E: Error,
-    {
-        Ok(BTreeSet::new())
-    }
-
-    #[inline]
-    fn visit_seq<V>(&mut self, mut visitor: V) -> Result<BTreeSet<T>, V::Error>
-        where V: SeqVisitor,
-    {
-        let mut values = BTreeSet::new();
-
-        while let Some(value) = try!(visitor.visit()) {
-            values.insert(value);
-        }
-
-        try!(visitor.end());
-
-        Ok(values)
-    }
-}
-
-impl<T> Deserialize for BTreeSet<T>
-    where T: Deserialize + Eq + Ord,
-{
-    fn deserialize<D>(deserializer: &mut D) -> Result<BTreeSet<T>, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(BTreeSetVisitor::new())
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub struct HashSetVisitor<T> {
-    marker: PhantomData<T>,
-}
-
-impl<T> HashSetVisitor<T> {
-    pub fn new() -> Self {
-        HashSetVisitor {
-            marker: PhantomData,
-        }
-    }
-}
-
-impl<T> Visitor for HashSetVisitor<T>
-    where T: Deserialize + Eq + Hash,
-{
-    type Value = HashSet<T>;
-
-    #[inline]
-    fn visit_unit<E>(&mut self) -> Result<HashSet<T>, E>
-        where E: Error,
-    {
-        Ok(HashSet::new())
-    }
-
-    #[inline]
-    fn visit_seq<V>(&mut self, mut visitor: V) -> Result<HashSet<T>, V::Error>
-        where V: SeqVisitor,
-    {
-        let (len, _) = visitor.size_hint();
-        let mut values = HashSet::with_capacity(len);
-
-        while let Some(value) = try!(visitor.visit()) {
-            values.insert(value);
-        }
-
-        try!(visitor.end());
-
-        Ok(values)
-    }
-}
-
-impl<T> Deserialize for HashSet<T>
-    where T: Deserialize + Eq + Hash,
-{
-    fn deserialize<D>(deserializer: &mut D) -> Result<HashSet<T>, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(HashSetVisitor::new())
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub struct VecVisitor<T> {
-    marker: PhantomData<T>,
-}
-
-impl<T> VecVisitor<T> {
-    pub fn new() -> Self {
-        VecVisitor {
-            marker: PhantomData,
-        }
-    }
-}
-
-impl<T> Visitor for VecVisitor<T> where T: Deserialize {
-    type Value = Vec<T>;
-
-    #[inline]
-    fn visit_unit<E>(&mut self) -> Result<Vec<T>, E>
-        where E: Error,
-    {
-        Ok(Vec::new())
-    }
-
-    #[inline]
-    fn visit_seq<V>(&mut self, mut visitor: V) -> Result<Vec<T>, V::Error>
-        where V: 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(values)
-    }
-}
-
-impl<T> Deserialize for Vec<T>
-    where T: Deserialize,
-{
-    fn deserialize<D>(deserializer: &mut D) -> Result<Vec<T>, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(VecVisitor::new())
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-macro_rules! tuple_impls {
-    () => {};
-    ($($visitor:ident => ($($name:ident),+),)+) => {
-        $(
-            struct $visitor<$($name,)+> {
-                marker: PhantomData<($($name,)+)>,
-            }
-
-            impl<
-                $($name: Deserialize,)+
-            > Visitor for $visitor<$($name,)+> {
-                type Value = ($($name,)+);
-
-                #[inline]
-                #[allow(non_snake_case)]
-                fn visit_seq<V>(&mut self, mut visitor: V) -> Result<($($name,)+), V::Error>
-                    where V: SeqVisitor,
-                {
-                    $(
-                        let $name = match try!(visitor.visit()) {
-                            Some(value) => value,
-                            None => { return Err(Error::end_of_stream_error()); }
-                        };
-                     )+;
-
-                    try!(visitor.end());
-
-                    Ok(($($name,)+))
-                }
-            }
-
-            impl<
-                $($name: Deserialize),+
-            > Deserialize for ($($name,)+) {
-                #[inline]
-                fn deserialize<D>(deserializer: &mut D) -> Result<($($name,)+), D::Error>
-                    where D: Deserializer,
-                {
-                    deserializer.visit($visitor { marker: PhantomData })
-                }
-            }
-        )+
-    }
-}
-
-tuple_impls! {
-    TupleVisitor1 => (T0),
-    TupleVisitor2 => (T0, T1),
-    TupleVisitor3 => (T0, T1, T2),
-    TupleVisitor4 => (T0, T1, T2, T3),
-    TupleVisitor5 => (T0, T1, T2, T3, T4),
-    TupleVisitor6 => (T0, T1, T2, T3, T4, T5),
-    TupleVisitor7 => (T0, T1, T2, T3, T4, T5, T6),
-    TupleVisitor8 => (T0, T1, T2, T3, T4, T5, T6, T7),
-    TupleVisitor9 => (T0, T1, T2, T3, T4, T5, T6, T7, T8),
-    TupleVisitor10 => (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9),
-    TupleVisitor11 => (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10),
-    TupleVisitor12 => (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11),
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub struct BTreeMapVisitor<K, V> {
-    marker: PhantomData<BTreeMap<K, V>>,
-}
-
-impl<K, V> BTreeMapVisitor<K, V> {
-    #[inline]
-    pub fn new() -> Self {
-        BTreeMapVisitor {
-            marker: PhantomData,
-        }
-    }
-}
-
-impl<K, V> Visitor for BTreeMapVisitor<K, V>
-    where K: Deserialize + Ord,
-          V: Deserialize
-{
-    type Value = BTreeMap<K, V>;
-
-    #[inline]
-    fn visit_unit<E>(&mut self) -> Result<BTreeMap<K, V>, E>
-        where E: Error,
-    {
-        Ok(BTreeMap::new())
-    }
-
-    #[inline]
-    fn visit_map<Visitor>(&mut self, mut visitor: Visitor) -> Result<BTreeMap<K, V>, Visitor::Error>
-        where Visitor: MapVisitor,
-    {
-        let mut values = BTreeMap::new();
-
-        while let Some((key, value)) = try!(visitor.visit()) {
-            values.insert(key, value);
-        }
-
-        try!(visitor.end());
-
-        Ok(values)
-    }
-}
-
-impl<K, V> Deserialize for BTreeMap<K, V>
-    where K: Deserialize + Eq + Ord,
-          V: Deserialize,
-{
-    fn deserialize<D>(deserializer: &mut D) -> Result<BTreeMap<K, V>, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(BTreeMapVisitor::new())
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub struct HashMapVisitor<K, V> {
-    marker: PhantomData<HashMap<K, V>>,
-}
-
-impl<K, V> HashMapVisitor<K, V> {
-    #[inline]
-    pub fn new() -> Self {
-        HashMapVisitor {
-            marker: PhantomData,
-        }
-    }
-}
-
-impl<K, V> Visitor for HashMapVisitor<K, V>
-    where K: Deserialize + Eq + Hash,
-          V: Deserialize,
-{
-    type Value = HashMap<K, V>;
-
-    #[inline]
-    fn visit_unit<E>(&mut self) -> Result<HashMap<K, V>, E>
-        where E: Error,
-    {
-        Ok(HashMap::new())
-    }
-
-    #[inline]
-    fn visit_map<V_>(&mut self, mut visitor: V_) -> Result<HashMap<K, V>, V_::Error>
-        where V_: MapVisitor,
-    {
-        let (len, _) = visitor.size_hint();
-        let mut values = HashMap::with_capacity(len);
-
-        while let Some((key, value)) = try!(visitor.visit()) {
-            values.insert(key, value);
-        }
-
-        try!(visitor.end());
-
-        Ok(values)
-    }
-}
-
-impl<K, V> Deserialize for HashMap<K, V>
-    where K: Deserialize + Eq + Hash,
-          V: Deserialize,
-{
-    fn deserialize<D>(deserializer: &mut D) -> Result<HashMap<K, V>, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(HashMapVisitor::new())
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-// FIXME: `VecMap` is unstable.
-/*
-pub struct VecMapVisitor<V> {
-    marker: PhantomData<VecMap<V>>,
-}
-
-impl<V> VecMapVisitor<V> {
-    #[inline]
-    pub fn new() -> Self {
-        VecMapVisitor {
-            marker: PhantomData,
-        }
-    }
-}
-
-impl<V> Visitor for VecMapVisitor<V>
-    where V: Deserialize,
-{
-    type Value = VecMap<V>;
-
-    #[inline]
-    fn visit_unit<E>(&mut self) -> Result<VecMap<V>, E>
-        where E: Error,
-    {
-        Ok(VecMap::new())
-    }
-
-    #[inline]
-    fn visit_map<V_>(&mut self, mut visitor: V_) -> Result<VecMap<V>, V_::Error>
-        where V_: MapVisitor,
-    {
-        let (len, _) = visitor.size_hint();
-        let mut values = VecMap::with_capacity(len);
-
-        while let Some((key, value)) = try!(visitor.visit()) {
-            values.insert(key, value);
-        }
-
-        try!(visitor.end());
-
-        Ok(values)
-    }
-}
-
-impl<V> Deserialize for VecMap<V>
-    where V: Deserialize,
-{
-    fn deserialize<D>(deserializer: &mut D) -> Result<VecMap<V>, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(VecMapVisitor::new())
-    }
-}
-*/
-
-///////////////////////////////////////////////////////////////////////////////
-
-struct PathBufVisitor;
-
-impl Visitor for PathBufVisitor {
-    type Value = path::PathBuf;
-
-    fn visit_str<E>(&mut self, v: &str) -> Result<path::PathBuf, E>
-        where E: Error,
-    {
-        Ok(From::from(v))
-    }
-
-    fn visit_string<E>(&mut self, v: String) -> Result<path::PathBuf, E>
-        where E: Error,
-    {
-        self.visit_str(&v)
-    }
-}
-
-impl Deserialize for path::PathBuf {
-    fn deserialize<D>(deserializer: &mut D) -> Result<path::PathBuf, D::Error>
-        where D: Deserializer,
-    {
-        deserializer.visit(PathBufVisitor)
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-impl<T: Deserialize> Deserialize for Box<T> {
-    fn deserialize<D>(deserializer: &mut D) -> Result<Box<T>, D::Error>
-        where D: Deserializer,
-    {
-        let val = try!(Deserialize::deserialize(deserializer));
-        Ok(Box::new(val))
-    }
-}
-
-impl<T: Deserialize> Deserialize for Arc<T> {
-    fn deserialize<D>(deserializer: &mut D) -> Result<Arc<T>, D::Error>
-        where D: Deserializer,
-    {
-        let val = try!(Deserialize::deserialize(deserializer));
-        Ok(Arc::new(val))
-    }
-}
-
-impl<T: Deserialize> Deserialize for Rc<T> {
-    fn deserialize<D>(deserializer: &mut D) -> Result<Rc<T>, D::Error>
-        where D: Deserializer,
-    {
-        let val = try!(Deserialize::deserialize(deserializer));
-        Ok(Rc::new(val))
-    }
-}

src/de/mod.rs

@@ -1,469 +0,0 @@
-//! Generic deserialization framework.
-
-pub mod impls;
-pub mod value;
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub trait Error {
-    fn syntax_error() -> Self;
-
-    fn end_of_stream_error() -> Self;
-
-    fn unknown_field_error(field: &str) -> Self;
-
-    fn missing_field_error(field: &'static str) -> Self;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub trait Deserialize {
-    /// Deserialize this value given this `Deserializer`.
-    fn deserialize<D>(deserializer: &mut D) -> Result<Self, D::Error>
-        where D: Deserializer;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-/// `Deserializer` is an abstract trait that can deserialize values into a `Visitor`.
-pub trait Deserializer {
-    type Error: Error;
-
-    /// The `visit` method walks a visitor through a value as it is being deserialized.
-    fn visit<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor;
-
-    /// The `visit_option` method allows a `Deserialize` type to inform the `Deserializer` that
-    /// it's expecting an optional value. This allows deserializers that encode an optional value
-    /// as a nullable value to convert the null value into a `None`, and a regular value as
-    /// `Some(value)`.
-    #[inline]
-    fn visit_option<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor,
-    {
-        self.visit(visitor)
-    }
-
-    /// The `visit_seq` method allows a `Deserialize` type to inform the `Deserializer` that it's
-    /// expecting a sequence of values. This allows deserializers to parse sequences that aren't
-    /// tagged as sequences.
-    #[inline]
-    fn visit_seq<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor,
-    {
-        self.visit(visitor)
-    }
-
-    /// The `visit_map` method allows a `Deserialize` type to inform the `Deserializer` that it's
-    /// expecting a map of values. This allows deserializers to parse sequences that aren't tagged
-    /// as maps.
-    #[inline]
-    fn visit_map<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor,
-    {
-        self.visit(visitor)
-    }
-
-    /// The `visit_named_unit` method allows a `Deserialize` type to inform the `Deserializer` that
-    /// it's expecting a named unit. This allows deserializers to a named unit that aren't tagged
-    /// as a named unit.
-    #[inline]
-    fn visit_named_unit<V>(&mut self, _name: &str, visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor,
-    {
-        self.visit(visitor)
-    }
-
-    /// The `visit_named_seq` method allows a `Deserialize` type to inform the `Deserializer` that
-    /// it's expecting a named sequence of values. This allows deserializers to parse sequences
-    /// that aren't tagged as sequences.
-    #[inline]
-    fn visit_named_seq<V>(&mut self, _name: &str, visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor,
-    {
-        self.visit_seq(visitor)
-    }
-
-    /// The `visit_named_map` method allows a `Deserialize` type to inform the `Deserializer` that
-    /// it's expecting a map of values. This allows deserializers to parse sequences that aren't
-    /// tagged as maps.
-    #[inline]
-    fn visit_named_map<V>(&mut self, _name: &str, visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor,
-    {
-        self.visit_map(visitor)
-    }
-
-    /// The `visit_enum` method allows a `Deserialize` type to inform the `Deserializer` that it's
-    /// expecting an enum value. This allows deserializers that provide a custom enumeration
-    /// serialization to properly deserialize the type.
-    #[inline]
-    fn visit_enum<V>(&mut self, _enum: &str, _visitor: V) -> Result<V::Value, Self::Error>
-        where V: EnumVisitor,
-    {
-        Err(Error::syntax_error())
-    }
-
-    /// The `visit_bytes` method allows a `Deserialize` type to inform the `Deserializer` that it's
-    /// expecting a `Vec<u8>`. This allows deserializers that provide a custom byte vector
-    /// serialization to properly deserialize the type.
-    #[inline]
-    fn visit_bytes<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor,
-    {
-        self.visit(visitor)
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub trait Visitor {
-    type Value;
-
-    fn visit_bool<E>(&mut self, _v: bool) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-
-    fn visit_isize<E>(&mut self, v: isize) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_i64(v as i64)
-    }
-
-    fn visit_i8<E>(&mut self, v: i8) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_i64(v as i64)
-    }
-
-    fn visit_i16<E>(&mut self, v: i16) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_i64(v as i64)
-    }
-
-    fn visit_i32<E>(&mut self, v: i32) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_i64(v as i64)
-    }
-
-    fn visit_i64<E>(&mut self, _v: i64) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-
-    fn visit_usize<E>(&mut self, v: usize) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_u64(v as u64)
-    }
-
-    fn visit_u8<E>(&mut self, v: u8) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_u64(v as u64)
-    }
-
-    fn visit_u16<E>(&mut self, v: u16) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_u64(v as u64)
-    }
-
-    fn visit_u32<E>(&mut self, v: u32) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_u64(v as u64)
-    }
-
-    fn visit_u64<E>(&mut self, _v: u64) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-
-    fn visit_f32<E>(&mut self, v: f32) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_f64(v as f64)
-    }
-
-    fn visit_f64<E>(&mut self, _v: f64) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-
-    #[inline]
-    fn visit_char<E>(&mut self, v: char) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        // FIXME: this allocation is required in order to be compatible with stable rust, which
-        // doesn't support encoding a `char` into a stack buffer.
-        self.visit_string(v.to_string())
-    }
-
-    fn visit_str<E>(&mut self, _v: &str) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-
-    #[inline]
-    fn visit_string<E>(&mut self, v: String) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_str(&v)
-    }
-
-    fn visit_unit<E>(&mut self) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-
-    #[inline]
-    fn visit_named_unit<E>(&mut self, _name: &str) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        self.visit_unit()
-    }
-
-    fn visit_none<E>(&mut self) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-
-    fn visit_some<D>(&mut self, _deserializer: &mut D) -> Result<Self::Value, D::Error>
-        where D: Deserializer,
-    {
-        Err(Error::syntax_error())
-    }
-
-    fn visit_seq<V>(&mut self, _visitor: V) -> Result<Self::Value, V::Error>
-        where V: SeqVisitor,
-    {
-        Err(Error::syntax_error())
-    }
-
-    fn visit_map<V>(&mut self, _visitor: V) -> Result<Self::Value, V::Error>
-        where V: MapVisitor,
-    {
-        Err(Error::syntax_error())
-    }
-
-    fn visit_bytes<E>(&mut self, _v: &[u8]) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-
-    fn visit_byte_buf<E>(&mut self, _v: Vec<u8>) -> Result<Self::Value, E>
-        where E: Error,
-    {
-        Err(Error::syntax_error())
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub trait SeqVisitor {
-    type Error: Error;
-
-    fn visit<T>(&mut self) -> Result<Option<T>, Self::Error>
-        where T: Deserialize;
-
-    fn end(&mut self) -> Result<(), Self::Error>;
-
-    #[inline]
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (0, None)
-    }
-}
-
-impl<'a, V> SeqVisitor for &'a mut V where V: SeqVisitor {
-    type Error = V::Error;
-
-    #[inline]
-    fn visit<T>(&mut self) -> Result<Option<T>, V::Error>
-        where T: Deserialize
-    {
-        (**self).visit()
-    }
-
-    #[inline]
-    fn end(&mut self) -> Result<(), V::Error> {
-        (**self).end()
-    }
-
-    #[inline]
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (**self).size_hint()
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub trait MapVisitor {
-    type Error: Error;
-
-    #[inline]
-    fn visit<K, V>(&mut self) -> Result<Option<(K, V)>, Self::Error>
-        where K: Deserialize,
-              V: Deserialize,
-    {
-        match try!(self.visit_key()) {
-            Some(key) => {
-                let value = try!(self.visit_value());
-                Ok(Some((key, value)))
-            }
-            None => Ok(None)
-        }
-    }
-
-    fn visit_key<K>(&mut self) -> Result<Option<K>, Self::Error>
-        where K: Deserialize;
-
-    fn visit_value<V>(&mut self) -> Result<V, Self::Error>
-        where V: Deserialize;
-
-    fn end(&mut self) -> Result<(), Self::Error>;
-
-    #[inline]
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (0, None)
-    }
-
-    fn missing_field<V>(&mut self, field: &'static str) -> Result<V, Self::Error>
-        where V: Deserialize,
-    {
-        Err(Error::missing_field_error(field))
-    }
-}
-
-impl<'a, V_> MapVisitor for &'a mut V_ where V_: MapVisitor {
-    type Error = V_::Error;
-
-    #[inline]
-    fn visit<K, V>(&mut self) -> Result<Option<(K, V)>, V_::Error>
-        where K: Deserialize,
-              V: Deserialize,
-    {
-        (**self).visit()
-    }
-
-    #[inline]
-    fn visit_key<K>(&mut self) -> Result<Option<K>, V_::Error>
-        where K: Deserialize
-    {
-        (**self).visit_key()
-    }
-
-    #[inline]
-    fn visit_value<V>(&mut self) -> Result<V, V_::Error>
-        where V: Deserialize
-    {
-        (**self).visit_value()
-    }
-
-    #[inline]
-    fn end(&mut self) -> Result<(), V_::Error> {
-        (**self).end()
-    }
-
-    #[inline]
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (**self).size_hint()
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-/// `EnumVisitor` is a visitor that is created by the `Deserialize` and passed to the
-/// `Deserializer` in order to deserialize enums.
-pub trait EnumVisitor {
-    type Value;
-
-    fn visit<V>(&mut self, visitor: V) -> Result<Self::Value, V::Error>
-        where V: VariantVisitor;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-/// `VariantVisitor` is a visitor that is created by the `Deserializer` and passed to the
-/// `Deserialize` in order to deserialize a specific enum variant.
-pub trait VariantVisitor {
-    type Error: Error;
-
-    /// `visit_variant` is called to identify which variant to deserialize.
-    fn visit_variant<V>(&mut self) -> Result<V, Self::Error>
-        where V: Deserialize;
-
-    /// `visit_unit` is called when deserializing a variant with no values.
-    fn visit_unit(&mut self) -> Result<(), Self::Error> {
-        Err(Error::syntax_error())
-    }
-
-    /// `visit_seq` is called when deserializing a tuple-like variant.
-    fn visit_seq<V>(&mut self, _visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor
-    {
-        Err(Error::syntax_error())
-    }
-
-    /// `visit_map` is called when deserializing a struct-like variant.
-    fn visit_map<V>(&mut self, _visitor: V) -> Result<V::Value, Self::Error>
-        where V: Visitor
-    {
-        Err(Error::syntax_error())
-    }
-}
-
-impl<'a, T> VariantVisitor for &'a mut T where T: VariantVisitor {
-    type Error = T::Error;
-
-    fn visit_variant<V>(&mut self) -> Result<V, T::Error>
-        where V: Deserialize
-    {
-        (**self).visit_variant()
-    }
-
-    fn visit_unit(&mut self) -> Result<(), T::Error> {
-        (**self).visit_unit()
-    }
-
-    fn visit_seq<V>(&mut self, visitor: V) -> Result<V::Value, T::Error>
-        where V: Visitor,
-    {
-        (**self).visit_seq(visitor)
-    }
-
-    fn visit_map<V>(&mut self, visitor: V) -> Result<V::Value, T::Error>
-        where V: Visitor,
-    {
-        (**self).visit_map(visitor)
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub trait EnumSeqVisitor {
-    type Value;
-
-    fn visit<V>(&mut self, visitor: V) -> Result<Self::Value, V::Error>
-        where V: SeqVisitor;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-pub trait EnumMapVisitor {
-    type Value;
-
-    fn visit<V>(&mut self, visitor: V) -> Result<Self::Value, V::Error>
-        where V: MapVisitor;
-}

src/json/de.rs

@@ -1,675 +0,0 @@
-use std::char;
-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>,
-}
-
-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 res = 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' => {
-                            res *= 10;
-                            res += (c as u64) - (b'0' as u64);
-                            try!(self.bump());
-                        }
-                        _ => break,
-                    }
-                }
-            }
-            _ => { return Err(self.error(ErrorCode::InvalidNumber)); }
-        }
-
-        Ok(res)
-    }
-
-    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 = 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 *= 10;
-                    exp += (c as i32) - (b'0' as i32);
-
-                    try!(self.bump());
-                }
-                _ => break
-            }
-        }
-
-        let exp: f64 = 10_f64.powi(exp);
-        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();
-
-        let mut escape = false;
-
-        loop {
-            let ch = match try!(self.next_char()) {
-                Some(ch) => ch,
-                None => { return Err(self.error(ErrorCode::EOFWhileParsingString)); }
-            };
-
-            if escape {
-                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));
-                    }
-                }
-                escape = false;
-            } else {
-                match ch {
-                    b'"' => {
-                        try!(self.bump());
-                        return Ok(());
-                    }
-                    b'\\' => {
-                        escape = true;
-                    }
-                    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))
-        }
-    }
-}
-
-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())
-}

tests/test_annotations.rs

@@ -1,57 +0,0 @@
-#![feature(custom_attribute, custom_derive, plugin, test)]
-#![plugin(serde_macros)]
-
-extern crate test;
-extern crate serde;
-
-use serde::json;
-
-#[derive(Debug, PartialEq, Serialize, Deserialize)]
-struct Default {
-    a1: i32,
-    #[serde(default)]
-    a2: i32,
-}
-
-#[derive(Debug, PartialEq, Serialize, Deserialize)]
-struct Rename {
-    a1: i32,
-    #[serde(rename="a3")]
-    a2: i32,
-}
-
-#[derive(Debug, PartialEq, Serialize, Deserialize)]
-struct DirectionRename {
-    a1: i32,
-    #[serde(rename_serialize="a3", rename_deserialize="a4")]
-    a2: i32,
-}
-
-#[test]
-fn test_default() {
-    let deserialized_value: Default = json::from_str(&"{\"a1\":1,\"a2\":2}").unwrap();
-    assert_eq!(deserialized_value, Default { a1: 1, a2: 2 });
-
-    let deserialized_value: Default = json::from_str(&"{\"a1\":1}").unwrap();
-    assert_eq!(deserialized_value, Default { a1: 1, a2: 0 });
-}
-
-#[test]
-fn test_rename() {
-    let value = Rename { a1: 1, a2: 2 };
-    let serialized_value = json::to_string(&value).unwrap();
-    assert_eq!(serialized_value, "{\"a1\":1,\"a3\":2}");
-
-    let deserialized_value: Rename = json::from_str(&serialized_value).unwrap();
-    assert_eq!(value, deserialized_value);
-}
-
-#[test]
-fn test_direction_rename() {
-    let value = DirectionRename { a1: 1, a2: 2 };
-    let serialized_value = json::to_string(&value).unwrap();
-    assert_eq!(serialized_value, "{\"a1\":1,\"a3\":2}");
-
-    let deserialized_value = json::from_str("{\"a1\":1,\"a4\":2}").unwrap();
-    assert_eq!(value, deserialized_value);
-}