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Support arbitrary discriminants

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Closes #3661
This commit is contained in:
Aleksey Kladov 2020-03-20 08:50:34 +01:00
parent 1ba03c6995
commit 89694ec8f6
3 changed files with 37 additions and 4 deletions
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10
crates/ra_parser/src/grammar/items/adt.rs
View file

@ -83,12 +83,14 @@ pub(crate) fn enum_variant_list(p: &mut Parser) {
match p.current() {
T!['{'] => record_field_def_list(p),
T!['('] => tuple_field_def_list(p),
T![=] => {
p.bump(T![=]);
expressions::expr(p);
}
_ => (),
}
// test variant_discriminant
// enum E { X(i32) = 10 }
if p.eat(T![=]) {
expressions::expr(p);
}
var.complete(p, ENUM_VARIANT);
} else {
var.abandon(p);

1
crates/ra_syntax/test_data/parser/inline/ok/0157_variant_discriminant.rs Normal file
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@ -0,0 +1 @@
enum E { X(i32) = 10 }

30
crates/ra_syntax/test_data/parser/inline/ok/0157_variant_discriminant.txt Normal file
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@ -0,0 +1,30 @@
SOURCE_FILE@[0; 23)
ENUM_DEF@[0; 22)
ENUM_KW@[0; 4) "enum"
WHITESPACE@[4; 5) " "
NAME@[5; 6)
IDENT@[5; 6) "E"
WHITESPACE@[6; 7) " "
ENUM_VARIANT_LIST@[7; 22)
L_CURLY@[7; 8) "{"
WHITESPACE@[8; 9) " "
ENUM_VARIANT@[9; 20)
NAME@[9; 10)
IDENT@[9; 10) "X"
TUPLE_FIELD_DEF_LIST@[10; 15)
L_PAREN@[10; 11) "("
TUPLE_FIELD_DEF@[11; 14)
PATH_TYPE@[11; 14)
PATH@[11; 14)
PATH_SEGMENT@[11; 14)
NAME_REF@[11; 14)
IDENT@[11; 14) "i32"
R_PAREN@[14; 15) ")"
WHITESPACE@[15; 16) " "
EQ@[16; 17) "="
WHITESPACE@[17; 18) " "
LITERAL@[18; 20)
INT_NUMBER@[18; 20) "10"
WHITESPACE@[20; 21) " "
R_CURLY@[21; 22) "}"
WHITESPACE@[22; 23) "\n"