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Make serde state variable unique by naming it __serde_state

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Closes #557
This commit is contained in:
Erick Tryzelaar 2016-09-26 21:09:13 -07:00
parent 429de89276
commit f47a50e996
2 changed files with 41 additions and 12 deletions
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28
serde_codegen/src/ser.rs
View File

@ -230,9 +230,9 @@ fn serialize_tuple_struct(
let let_mut = mut_if(cx, len > 0); let let_mut = mut_if(cx, len > 0);
quote_block!(cx, { quote_block!(cx, {
let $let_mut state = try!(_serializer.serialize_tuple_struct($type_name, $len)); let $let_mut __serde_state = try!(_serializer.serialize_tuple_struct($type_name, $len));
$serialize_stmts $serialize_stmts
_serializer.serialize_tuple_struct_end(state) _serializer.serialize_tuple_struct_end(__serde_state)
}).unwrap() }).unwrap()
} }
@ -275,9 +275,9 @@ fn serialize_struct(
.fold(quote_expr!(cx, 0), |sum, expr| quote_expr!(cx, $sum + $expr)); .fold(quote_expr!(cx, 0), |sum, expr| quote_expr!(cx, $sum + $expr));
quote_block!(cx, { quote_block!(cx, {
let $let_mut state = try!(_serializer.serialize_struct($type_name, $len)); let $let_mut __serde_state = try!(_serializer.serialize_struct($type_name, $len));
$serialize_fields $serialize_fields
_serializer.serialize_struct_end(state) _serializer.serialize_struct_end(__serde_state)
}).unwrap() }).unwrap()
} }
@ -469,9 +469,13 @@ fn serialize_tuple_variant(
let let_mut = mut_if(cx, len > 0); let let_mut = mut_if(cx, len > 0);
quote_block!(cx, { quote_block!(cx, {
let $let_mut state = try!(_serializer.serialize_tuple_variant($type_name, $variant_index, $variant_name, $len)); let $let_mut __serde_state = try!(_serializer.serialize_tuple_variant(
$type_name,
$variant_index,
$variant_name,
$len));
$serialize_stmts $serialize_stmts
_serializer.serialize_tuple_variant_end(state) _serializer.serialize_tuple_variant_end(__serde_state)
}).unwrap() }).unwrap()
} }
@ -517,14 +521,14 @@ fn serialize_struct_variant(
.fold(quote_expr!(cx, 0), |sum, expr| quote_expr!(cx, $sum + $expr)); .fold(quote_expr!(cx, 0), |sum, expr| quote_expr!(cx, $sum + $expr));
quote_block!(cx, { quote_block!(cx, {
let $let_mut state = try!(_serializer.serialize_struct_variant( let $let_mut __serde_state = try!(_serializer.serialize_struct_variant(
$item_name, $item_name,
$variant_index, $variant_index,
$variant_name, $variant_name,
$len, $len,
)); ));
$serialize_fields $serialize_fields
_serializer.serialize_struct_variant_end(state) _serializer.serialize_struct_variant_end(__serde_state)
}).unwrap() }).unwrap()
} }
@ -555,7 +559,7 @@ fn serialize_tuple_struct_visitor(
} }
let ser = quote_expr!(cx, let ser = quote_expr!(cx,
try!(_serializer.$func(&mut state, $field_expr)); try!(_serializer.$func(&mut __serde_state, $field_expr));
); );
match skip { match skip {
@ -596,7 +600,7 @@ fn serialize_struct_visitor(
} }
let ser = quote_expr!(cx, let ser = quote_expr!(cx,
try!(_serializer.$func(&mut state, $key_expr, $field_expr)); try!(_serializer.$func(&mut __serde_state, $key_expr, $field_expr));
); );
match skip { match skip {
@ -659,8 +663,8 @@ fn name_expr(
// Serialization of an empty struct results in code like: // Serialization of an empty struct results in code like:
// //
// let mut state = try!(serializer.serialize_struct("S", 0)); // let mut __serde_state = try!(serializer.serialize_struct("S", 0));
// serializer.serialize_struct_end(state) // serializer.serialize_struct_end(__serde_state)
// //
// where we want to omit the `mut` to avoid a warning. // where we want to omit the `mut` to avoid a warning.
fn mut_if(cx: &ExtCtxt, is_mut: bool) -> Vec<TokenTree> { fn mut_if(cx: &ExtCtxt, is_mut: bool) -> Vec<TokenTree> {

25
testing/tests/test_macros.rs
View File

@ -600,3 +600,28 @@ fn test_default_ty_param() {
] ]
); );
} }
#[test]
fn test_enum_state_field() {
#[derive(Debug, PartialEq, Serialize, Deserialize)]
enum SomeEnum {
Key { key: char, state: bool },
}
assert_tokens(
&SomeEnum::Key { key: 'a', state: true },
&[
Token::EnumMapStart("SomeEnum", "Key", 2),
Token::EnumMapSep,
Token::Str("key"),
Token::Char('a'),
Token::EnumMapSep,
Token::Str("state"),
Token::Bool(true),
Token::EnumMapEnd,
]
);
}