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Deserialization of Haskell style enums

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This commit is contained in:
David Tolnay
2017-02-19 16:04:50 -08:00
parent 599a1b6607
commit 9a3c1243f4
4 changed files with 394 additions and 15 deletions
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test_suite/tests/test_macros.rs
+114 -11
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@@ -884,17 +884,18 @@ fn test_internally_tagged_enum() {
#[test]
fn test_adjacently_tagged_enum() {
#[derive(Debug, PartialEq, Serialize)]
#[derive(Debug, PartialEq, Serialize, Deserialize)]
#[serde(tag = "t", content = "c")]
enum AdjacentlyTagged {
enum AdjacentlyTagged<T> {
Unit,
Newtype(u8),
Newtype(T),
Tuple(u8, u8),
Struct { f: u8 },
}
assert_ser_tokens(
&AdjacentlyTagged::Unit,
// unit with no content
assert_tokens(
&AdjacentlyTagged::Unit::<u8>,
&[
Token::StructStart("AdjacentlyTagged", 1),
@@ -906,8 +907,45 @@ fn test_adjacently_tagged_enum() {
]
);
assert_ser_tokens(
&AdjacentlyTagged::Newtype(1),
// unit with tag first
assert_de_tokens(
&AdjacentlyTagged::Unit::<u8>,
&[
Token::StructStart("AdjacentlyTagged", 1),
Token::StructSep,
Token::Str("t"),
Token::Str("Unit"),
Token::StructSep,
Token::Str("c"),
Token::Unit,
Token::StructEnd,
]
);
// unit with content first
assert_de_tokens(
&AdjacentlyTagged::Unit::<u8>,
&[
Token::StructStart("AdjacentlyTagged", 1),
Token::StructSep,
Token::Str("c"),
Token::Unit,
Token::StructSep,
Token::Str("t"),
Token::Str("Unit"),
Token::StructEnd,
]
);
// newtype with tag first
assert_tokens(
&AdjacentlyTagged::Newtype::<u8>(1),
&[
Token::StructStart("AdjacentlyTagged", 2),
@@ -923,8 +961,27 @@ fn test_adjacently_tagged_enum() {
]
);
assert_ser_tokens(
&AdjacentlyTagged::Tuple(1, 1),
// newtype with content first
assert_de_tokens(
&AdjacentlyTagged::Newtype::<u8>(1),
&[
Token::StructStart("AdjacentlyTagged", 2),
Token::StructSep,
Token::Str("c"),
Token::U8(1),
Token::StructSep,
Token::Str("t"),
Token::Str("Newtype"),
Token::StructEnd,
]
);
// tuple with tag first
assert_tokens(
&AdjacentlyTagged::Tuple::<u8>(1, 1),
&[
Token::StructStart("AdjacentlyTagged", 2),
@@ -945,8 +1002,32 @@ fn test_adjacently_tagged_enum() {
]
);
assert_ser_tokens(
&AdjacentlyTagged::Struct { f: 1 },
// tuple with content first
assert_de_tokens(
&AdjacentlyTagged::Tuple::<u8>(1, 1),
&[
Token::StructStart("AdjacentlyTagged", 2),
Token::StructSep,
Token::Str("c"),
Token::TupleStart(2),
Token::TupleSep,
Token::U8(1),
Token::TupleSep,
Token::U8(1),
Token::TupleEnd,
Token::StructSep,
Token::Str("t"),
Token::Str("Tuple"),
Token::StructEnd,
]
);
// struct with tag first
assert_tokens(
&AdjacentlyTagged::Struct::<u8> { f: 1 },
&[
Token::StructStart("AdjacentlyTagged", 2),
@@ -965,4 +1046,26 @@ fn test_adjacently_tagged_enum() {
Token::StructEnd,
]
);
// struct with content first
assert_de_tokens(
&AdjacentlyTagged::Struct::<u8> { f: 1 },
&[
Token::StructStart("AdjacentlyTagged", 2),
Token::StructSep,
Token::Str("c"),
Token::StructStart("Struct", 1),
Token::StructSep,
Token::Str("f"),
Token::U8(1),
Token::StructEnd,
Token::StructSep,
Token::Str("t"),
Token::Str("Struct"),
Token::StructEnd,
]
);
}