Update to serde 0.8.0

Cargo.toml

@@ -17,7 +17,7 @@ facilitate deserializing and serializing Rust structures.
 
 [dependencies]
 rustc-serialize = { optional = true, version = "0.3.0" }
-serde = { optional = true, version = "0.7" }
+serde = { optional = true, version = "0.8" }
 
 [features]
 default = ["rustc-serialize"]

src/decoder/serde.rs

@@ -3,6 +3,43 @@ use Value;
 use super::{Decoder, DecodeError, DecodeErrorKind};
 use std::collections::BTreeMap;
 
+macro_rules! forward_to_deserialize {
+    ($(
+        $name:ident ( $( $arg:ident : $ty:ty ),* );
+    )*) => {
+        $(
+            forward_to_deserialize!{
+                func: $name ( $( $arg: $ty ),* );
+            }
+        )*
+    };
+
+    (func: deserialize_enum ( $( $arg:ident : $ty:ty ),* );) => {
+        fn deserialize_enum<V>(
+            &mut self,
+            $(_: $ty,)*
+            _visitor: V,
+        ) -> ::std::result::Result<V::Value, Self::Error>
+            where V: ::serde::de::EnumVisitor
+        {
+            Err(::serde::de::Error::invalid_type(::serde::de::Type::Enum))
+        }
+    };
+
+    (func: $name:ident ( $( $arg:ident : $ty:ty ),* );) => {
+        #[inline]
+        fn $name<V>(
+            &mut self,
+            $(_: $ty,)*
+            visitor: V,
+        ) -> ::std::result::Result<V::Value, Self::Error>
+            where V: ::serde::de::Visitor
+        {
+            self.deserialize(visitor)
+        }
+    };
+}
+
 impl de::Deserializer for Decoder {
     type Error = DecodeError;
 
@@ -186,6 +223,28 @@ impl de::Deserializer for Decoder {
         let mut d = <() as ValueDeserializer<Self::Error>>::into_deserializer(());
         d.deserialize(visitor)
     }
+
+    forward_to_deserialize!{
+        deserialize_usize();
+        deserialize_u8();
+        deserialize_u16();
+        deserialize_u32();
+        deserialize_isize();
+        deserialize_i8();
+        deserialize_i16();
+        deserialize_i32();
+        deserialize_f32();
+        deserialize_string();
+        deserialize_unit();
+        deserialize_seq_fixed_size(len: usize);
+        deserialize_bytes();
+        deserialize_unit_struct(name: &'static str);
+        deserialize_newtype_struct(name: &'static str);
+        deserialize_tuple_struct(name: &'static str, len: usize);
+        deserialize_struct(name: &'static str, fields: &'static [&'static str]);
+        deserialize_struct_field();
+        deserialize_tuple(len: usize);
+    }
 }
 
 struct VariantVisitor {
@@ -270,6 +329,39 @@ impl<'a, I> de::Deserializer for SeqDeserializer<'a, I>
     {
         visitor.visit_seq(self)
     }
+
+    forward_to_deserialize!{
+        deserialize_bool();
+        deserialize_usize();
+        deserialize_u8();
+        deserialize_u16();
+        deserialize_u32();
+        deserialize_u64();
+        deserialize_isize();
+        deserialize_i8();
+        deserialize_i16();
+        deserialize_i32();
+        deserialize_i64();
+        deserialize_f32();
+        deserialize_f64();
+        deserialize_char();
+        deserialize_str();
+        deserialize_string();
+        deserialize_unit();
+        deserialize_option();
+        deserialize_seq();
+        deserialize_seq_fixed_size(len: usize);
+        deserialize_bytes();
+        deserialize_map();
+        deserialize_unit_struct(name: &'static str);
+        deserialize_newtype_struct(name: &'static str);
+        deserialize_tuple_struct(name: &'static str, len: usize);
+        deserialize_struct(name: &'static str, fields: &'static [&'static str]);
+        deserialize_struct_field();
+        deserialize_tuple(len: usize);
+        deserialize_enum(name: &'static str, variants: &'static [&'static str]);
+        deserialize_ignored_any();
+    }
 }
 
 impl<'a, I> de::SeqVisitor for SeqDeserializer<'a, I>
@@ -492,6 +584,38 @@ impl de::Deserializer for UnitDeserializer {
     {
         visitor.visit_none()
     }
+
+    forward_to_deserialize!{
+        deserialize_bool();
+        deserialize_usize();
+        deserialize_u8();
+        deserialize_u16();
+        deserialize_u32();
+        deserialize_u64();
+        deserialize_isize();
+        deserialize_i8();
+        deserialize_i16();
+        deserialize_i32();
+        deserialize_i64();
+        deserialize_f32();
+        deserialize_f64();
+        deserialize_char();
+        deserialize_str();
+        deserialize_string();
+        deserialize_unit();
+        deserialize_seq();
+        deserialize_seq_fixed_size(len: usize);
+        deserialize_bytes();
+        deserialize_map();
+        deserialize_unit_struct(name: &'static str);
+        deserialize_newtype_struct(name: &'static str);
+        deserialize_tuple_struct(name: &'static str, len: usize);
+        deserialize_struct(name: &'static str, fields: &'static [&'static str]);
+        deserialize_struct_field();
+        deserialize_tuple(len: usize);
+        deserialize_enum(name: &'static str, variants: &'static [&'static str]);
+        deserialize_ignored_any();
+    }
 }
 
 impl de::Deserialize for Value {

src/encoder/serde.rs

@@ -128,12 +128,15 @@ impl ser::Serializer for Encoder {
     fn serialize_map(&mut self, _len: Option<usize>) -> Result<Self, Error> {
         self.table_begin()
     }
-    fn serialize_map_elt<K, V>(&mut self, _state: &mut Encoder, key: K, value: V) -> Result<(), Error>
+    fn serialize_map_key<K>(&mut self, _state: &mut Encoder, key: K) -> Result<(), Error>
-        where K: ser::Serialize, V: ser::Serialize
+        where K: ser::Serialize
     {
-        try!(self.table_key(|me| key.serialize(me)));
+        self.table_key(|me| key.serialize(me))
-        try!(value.serialize(self));
+    }
-        Ok(())
+    fn serialize_map_value<V>(&mut self, _state: &mut Encoder, value: V) -> Result<(), Error>
+        where V: ser::Serialize
+    {
+        value.serialize(self)
     }
     fn serialize_map_end(&mut self, state: Self) -> Result<(), Error> {
         self.table_end(state)
@@ -144,7 +147,8 @@ impl ser::Serializer for Encoder {
     fn serialize_struct_elt<V>(&mut self, state: &mut Encoder, key: &'static str, value: V) -> Result<(), Error>
         where V: ser::Serialize
     {
-        self.serialize_map_elt(state, key, value)
+        try!(self.serialize_map_key(state, key));
+        self.serialize_map_value(state, value)
     }
     fn serialize_struct_end(&mut self, state: Self) -> Result<(), Error> {
         self.serialize_map_end(state)
@@ -155,7 +159,8 @@ impl ser::Serializer for Encoder {
     fn serialize_struct_variant_elt<V>(&mut self, state: &mut Encoder, key: &'static str, value: V) -> Result<(), Error>
         where V: ser::Serialize
     {
-        self.serialize_map_elt(state, key, value)
+        try!(self.serialize_map_key(state, key));
+        self.serialize_map_value(state, value)
     }
     fn serialize_struct_variant_end(&mut self, state: Self) -> Result<(), Error> {
         self.serialize_map_end(state)
@@ -208,7 +213,8 @@ impl ser::Serialize for Value {
             Value::Table(ref t) => {
                 let mut state = try!(e.serialize_map(Some(t.len())));
                 for (k, v) in t.iter() {
-                    try!(e.serialize_map_elt(&mut state, k, v));
+                    try!(e.serialize_map_key(&mut state, k));
+                    try!(e.serialize_map_value(&mut state, v));
                 }
                 e.serialize_map_end(state)
             }