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Serialization of Haskell style enums

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This commit is contained in:
David Tolnay
2017-02-19 16:04:39 -08:00
parent 4538143d00
commit a3fe03c323
4 changed files with 161 additions and 238 deletions
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test_suite/tests/test_macros.rs
+34 -92
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@@ -884,36 +884,39 @@ fn test_internally_tagged_enum() {
#[test]
fn test_adjacently_tagged_enum() {
#[derive(Debug, PartialEq, Serialize, Deserialize)]
struct Newtype(BTreeMap<String, String>);
#[derive(Debug, PartialEq, Serialize, Deserialize)]
struct Struct {
f: u8,
}
#[derive(Debug, PartialEq, Serialize)] // , Deserialize
#[serde(tag = "type", content = "content")]
#[derive(Debug, PartialEq, Serialize)]
#[serde(tag = "t", content = "c")]
enum AdjacentlyTagged {
A(u8),
B(u8, u16, u32),
C,
D(BTreeMap<String, String>),
E(Newtype),
F(Struct),
Unit,
Newtype(u8),
Tuple(u8, u8),
Struct { f: u8 },
}
assert_ser_tokens(
&AdjacentlyTagged::A(1),
&AdjacentlyTagged::Unit,
&[
Token::StructStart("AdjacentlyTagged", 1),
Token::StructSep,
Token::Str("t"),
Token::Str("Unit"),
Token::StructEnd,
]
);
assert_ser_tokens(
&AdjacentlyTagged::Newtype(1),
&[
Token::StructStart("AdjacentlyTagged", 2),
Token::StructSep,
Token::Str("type"),
Token::Str("A"),
Token::Str("t"),
Token::Str("Newtype"),
Token::StructSep,
Token::Str("content"),
Token::Str("c"),
Token::U8(1),
Token::StructEnd,
@@ -921,28 +924,21 @@ fn test_adjacently_tagged_enum() {
);
assert_ser_tokens(
&AdjacentlyTagged::B(1, 300, 70000),
&AdjacentlyTagged::Tuple(1, 1),
&[
Token::StructStart("AdjacentlyTagged", 2),
Token::StructSep,
Token::Str("type"),
Token::Str("B"),
Token::Str("t"),
Token::Str("Tuple"),
Token::StructSep,
Token::Str("content"),
Token::TupleStart(3),
Token::Str("c"),
Token::TupleStart(2),
Token::TupleSep,
Token::U8(1),
Token::TupleSep,
Token::U16(300),
Token::TupleSep,
Token::U32(70000),
Token::U8(1),
Token::TupleEnd,
Token::StructEnd,
@@ -950,74 +946,20 @@ fn test_adjacently_tagged_enum() {
);
assert_ser_tokens(
&AdjacentlyTagged::C,
&[
Token::StructStart("AdjacentlyTagged", 1),
Token::StructSep,
Token::Str("type"),
Token::Str("C"),
Token::StructEnd,
]
);
assert_ser_tokens(
&AdjacentlyTagged::D(BTreeMap::new()),
&AdjacentlyTagged::Struct { f: 1 },
&[
Token::StructStart("AdjacentlyTagged", 2),
Token::StructSep,
Token::Str("type"),
Token::Str("D"),
Token::Str("t"),
Token::Str("Struct"),
Token::StructSep,
Token::Str("content"),
Token::MapStart(Some(0)),
Token::MapEnd,
Token::StructEnd,
]
);
// FIXME: Nested newtype is broken
// assert_ser_tokens(
// &AdjacentlyTagged::E(Newtype(BTreeMap::new())),
// &[
// Token::StructStart("AdjacentlyTagged", 2),
// Token::StructSep,
// Token::Str("type"),
// Token::Str("E"),
// Token::StructSep,
// Token::Str("content"),
// Token::MapStart(Some(0)),
// Token::MapEnd,
// Token::StructEnd,
// ]
// );
assert_ser_tokens(
&AdjacentlyTagged::F(Struct { f: 6 }),
&[
Token::StructStart("AdjacentlyTagged", 2),
Token::StructSep,
Token::Str("type"),
Token::Str("F"),
Token::StructSep,
Token::Str("content"),
Token::Str("c"),
Token::StructStart("Struct", 1),
Token::StructSep,
Token::Str("f"),
Token::U8(6),
Token::U8(1),
Token::StructEnd,
Token::StructEnd,