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Parse attributes in tuple expressions

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This commit is contained in:
Lukas Wirth 2020-12-20 21:01:36 +01:00
parent 4be9ed675e
commit 64caa027b8
3 changed files with 56 additions and 3 deletions
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8
crates/parser/src/grammar/expressions/atom.rs
View file

@ -156,11 +156,13 @@ fn tuple_expr(p: &mut Parser) -> CompletedMarker {
let mut saw_expr = false;
while !p.at(EOF) && !p.at(T![')']) {
saw_expr = true;
if !p.at_ts(EXPR_FIRST) {
p.error("expected expression");
// test tuple_attrs
// const A: (i64, i64) = (1, #[cfg(test)] 2);
if !expr_with_attrs(p) {
break;
}
expr(p);
if !p.at(T![')']) {
saw_comma = true;
p.expect(T![,]);

50
crates/syntax/test_data/parser/inline/ok/0154_tuple_attrs.rast Normal file
View file

@ -0,0 +1,50 @@
SOURCE_FILE@0..43
CONST@0..42
CONST_KW@0..5 "const"
WHITESPACE@5..6 " "
NAME@6..7
IDENT@6..7 "A"
COLON@7..8 ":"
WHITESPACE@8..9 " "
TUPLE_TYPE@9..19
L_PAREN@9..10 "("
PATH_TYPE@10..13
PATH@10..13
PATH_SEGMENT@10..13
NAME_REF@10..13
IDENT@10..13 "i64"
COMMA@13..14 ","
WHITESPACE@14..15 " "
PATH_TYPE@15..18
PATH@15..18
PATH_SEGMENT@15..18
NAME_REF@15..18
IDENT@15..18 "i64"
R_PAREN@18..19 ")"
WHITESPACE@19..20 " "
EQ@20..21 "="
WHITESPACE@21..22 " "
TUPLE_EXPR@22..41
L_PAREN@22..23 "("
LITERAL@23..24
INT_NUMBER@23..24 "1"
COMMA@24..25 ","
WHITESPACE@25..26 " "
LITERAL@26..40
ATTR@26..38
POUND@26..27 "#"
L_BRACK@27..28 "["
PATH@28..31
PATH_SEGMENT@28..31
NAME_REF@28..31
IDENT@28..31 "cfg"
TOKEN_TREE@31..37
L_PAREN@31..32 "("
IDENT@32..36 "test"
R_PAREN@36..37 ")"
R_BRACK@37..38 "]"
WHITESPACE@38..39 " "
INT_NUMBER@39..40 "2"
R_PAREN@40..41 ")"
SEMICOLON@41..42 ";"
WHITESPACE@42..43 "\n"

1
crates/syntax/test_data/parser/inline/ok/0154_tuple_attrs.rs Normal file
View file

@ -0,0 +1 @@
const A: (i64, i64) = (1, #[cfg(test)] 2);