Release 0.8.20

Implemented skip_deserializing for enum

serde/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde"
-version = "0.8.19"
+version = "0.8.20"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A generic serialization/deserialization framework"

serde/src/de/impls.rs

@@ -283,6 +283,12 @@ impl Visitor for StringVisitor {
         Ok(v)
     }
 
+    fn visit_unit<E>(&mut self) -> Result<String, E>
+        where E: Error,
+    {
+        Ok(String::new())
+    }
+
     fn visit_bytes<E>(&mut self, v: &[u8]) -> Result<String, E>
         where E: Error,
     {

serde_codegen/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_codegen"
-version = "0.8.19"
+version = "0.8.20"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros to auto-generate implementations for the serde framework"
@@ -22,8 +22,8 @@ with-syn = []
 
 [dependencies]
 clippy = { version = "^0.*", optional = true }
-quote = "0.3"
-serde_codegen_internals = { version = "=0.11.1", default-features = false, path = "../serde_codegen_internals" }
+quote = "0.3.8"
+serde_codegen_internals = { version = "=0.11.2", default-features = false, path = "../serde_codegen_internals" }
 syn = { version = "0.10", features = ["aster", "visit"] }
 syntex = { version = "^0.50.0", optional = true }
 syntex_syntax = { version = "^0.50.0", optional = true }

serde_codegen/src/de.rs

@@ -496,6 +496,7 @@ fn deserialize_item_enum(
 
     let variant_visitor = deserialize_field_visitor(
         variants.iter()
+            .filter(|variant| !variant.attrs.skip_deserializing())
             .map(|variant| variant.attrs.name().deserialize_name())
             .collect(),
         item_attrs,
@@ -518,7 +519,7 @@ fn deserialize_item_enum(
 
     // Match arms to extract a variant from a string
     let mut variant_arms = vec![];
-    for (i, variant) in variants.iter().enumerate() {
+    for (i, variant) in variants.iter().filter(|variant| !variant.attrs.skip_deserializing()).enumerate() {
         let variant_name = aster::id(format!("__field{}", i));
         let variant_name = quote!(__Field::#variant_name);
 

serde_codegen/src/lib.rs

@@ -159,15 +159,15 @@ mod shim {
 #[cfg(feature = "with-syn")]
 #[doc(hidden)]
 /// Not public API. Use the serde_derive crate.
-pub fn expand_derive_serialize(item: &str) -> Result<String, String> {
+pub fn expand_derive_serialize(item: &str) -> Result<quote::Tokens, String> {
     let syn_item = syn::parse_macro_input(item).unwrap();
-    ser::expand_derive_serialize(&syn_item).map(|derive| derive.to_string())
+    ser::expand_derive_serialize(&syn_item)
 }
 
 #[cfg(feature = "with-syn")]
 #[doc(hidden)]
 /// Not public API. Use the serde_derive crate.
-pub fn expand_derive_deserialize(item: &str) -> Result<String, String> {
+pub fn expand_derive_deserialize(item: &str) -> Result<quote::Tokens, String> {
     let syn_item = syn::parse_macro_input(item).unwrap();
-    de::expand_derive_deserialize(&syn_item).map(|derive| derive.to_string())
+    de::expand_derive_deserialize(&syn_item)
 }

serde_codegen_internals/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_codegen_internals"
-version = "0.11.1"
+version = "0.11.2"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "AST representation used by Serde codegen. Unstable."

serde_codegen_internals/src/attr.rs

@@ -187,12 +187,14 @@ impl Item {
 #[derive(Debug)]
 pub struct Variant {
     name: Name,
+    skip_deserializing: bool,
 }
 
 impl Variant {
     pub fn from_ast(cx: &Ctxt, variant: &syn::Variant) -> Self {
         let mut ser_name = Attr::none(cx, "rename");
         let mut de_name = Attr::none(cx, "rename");
+        let mut skip_deserializing = BoolAttr::none(cx, "skip_deserializing");
 
         for meta_items in variant.attrs.iter().filter_map(get_serde_meta_items) {
             for meta_item in meta_items {
@@ -212,6 +214,10 @@ impl Variant {
                             de_name.set_opt(de);
                         }
                     }
+                    // Parse `#[serde(skip_deserializing)]`
+                    MetaItem(Word(ref name)) if name == "skip_deserializing" => {
+                        skip_deserializing.set_true();
+                    }
 
                     MetaItem(ref meta_item) => {
                         cx.error(format!("unknown serde variant attribute `{}`",
@@ -230,12 +236,17 @@ impl Variant {
                 serialize: ser_name.get().unwrap_or_else(|| variant.ident.to_string()),
                 deserialize: de_name.get().unwrap_or_else(|| variant.ident.to_string()),
             },
+            skip_deserializing: skip_deserializing.get(),
         }
     }
 
     pub fn name(&self) -> &Name {
         &self.name
     }
+
+    pub fn skip_deserializing(&self) -> bool {
+        self.skip_deserializing
+    }
 }
 
 /// Represents field attribute information

serde_derive/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_derive"
-version = "0.8.19"
+version = "0.8.20"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
@@ -15,7 +15,7 @@ name = "serde_derive"
 proc-macro = true
 
 [dependencies.serde_codegen]
-version = "=0.8.19"
+version = "=0.8.20"
 path = "../serde_codegen"
 default-features = false
 features = ["with-syn"]
@@ -23,5 +23,5 @@ features = ["with-syn"]
 [dev-dependencies]
 compiletest_rs = "^0.2.0"
 fnv = "1.0"
-serde = { version = "0.8.19", path = "../serde" }
-serde_test = { version = "0.8.19", path = "../serde_test" }
+serde = { version = "0.8.20", path = "../serde" }
+serde_test = { version = "0.8.20", path = "../serde_test" }

serde_test/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_test"
-version = "0.8.19"
+version = "0.8.20"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Token De/Serializer for testing De/Serialize implementations"
@@ -12,4 +12,4 @@ keywords = ["serde", "serialization"]
 include = ["Cargo.toml", "src/**/*.rs"]
 
 [dependencies]
-serde = { version = "0.8.19", path = "../serde" }
+serde = { version = "0.8.20", path = "../serde" }

testing/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_testing"
-version = "0.8.19"
+version = "0.8.20"
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A generic serialization/deserialization framework"

testing/tests/test_de.rs

@@ -37,7 +37,9 @@ enum Enum {
     Unit,
     Simple(i32),
     Seq(i32, i32, i32),
-    Map { a: i32, b: i32, c: i32 }
+    Map { a: i32, b: i32, c: i32 },
+    #[serde(skip_deserializing)]
+    Skipped,
 }
 
 //////////////////////////////////////////////////////////////////////////
@@ -215,6 +217,9 @@ declare_tests! {
             Token::SeqEnd,
         ],
     }
+    test_unit_string {
+        String::new() => &[Token::Unit],
+    }
     test_tuple_struct {
         TupleStruct(1, 2, 3) => &[
             Token::SeqStart(Some(3)),
@@ -802,6 +807,12 @@ declare_error_tests! {
         ],
         Error::UnknownVariant("Foo".to_owned()),
     }
+    test_enum_skipped_variant<Enum> {
+        &[
+            Token::EnumUnit("Enum", "Skipped"),
+        ],
+        Error::UnknownVariant("Skipped".to_owned()),
+    }
     test_struct_seq_too_long<Struct> {
         &[
             Token::SeqStart(Some(4)),