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Merge #599

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599: Allow placeholder parameters in trait function definitions r=matklad a=regiontog

fixes #597 

Co-authored-by: Erlend Tobiassen <erlend.tobiassen@gmail.com>
This commit is contained in:
bors[bot] 2019-01-22 17:56:00 +00:00
commit b9f65b18b8
3 changed files with 41 additions and 1 deletions
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7
crates/ra_syntax/src/grammar/params.rs
View file

@ -79,7 +79,12 @@ fn value_parameter(p: &mut Parser, flavor: Flavor) {
let la1 = p.nth(1);
let la2 = p.nth(2);
let la3 = p.nth(3);
if la0 == IDENT && la1 == COLON
// test trait_fn_placeholder_parameter
// trait Foo {
// fn bar(_: u64);
// }
if (la0 == IDENT || la0 == UNDERSCORE) && la1 == COLON
|| la0 == AMP && la1 == IDENT && la2 == COLON
|| la0 == AMP && la1 == MUT_KW && la2 == IDENT && la3 == COLON
{

3
crates/ra_syntax/tests/data/parser/inline/ok/0116_trait_fn_placeholder_parameter.rs Normal file
View file

@ -0,0 +1,3 @@
trait Foo {
fn bar(_: u64);
}

32
crates/ra_syntax/tests/data/parser/inline/ok/0116_trait_fn_placeholder_parameter.txt Normal file
View file

@ -0,0 +1,32 @@
SOURCE_FILE@[0; 34)
TRAIT_DEF@[0; 33)
TRAIT_KW@[0; 5)
WHITESPACE@[5; 6)
NAME@[6; 9)
IDENT@[6; 9) "Foo"
WHITESPACE@[9; 10)
ITEM_LIST@[10; 33)
L_CURLY@[10; 11)
WHITESPACE@[11; 16)
FN_DEF@[16; 31)
FN_KW@[16; 18)
WHITESPACE@[18; 19)
NAME@[19; 22)
IDENT@[19; 22) "bar"
PARAM_LIST@[22; 30)
L_PAREN@[22; 23)
PARAM@[23; 29)
PLACEHOLDER_PAT@[23; 24)
UNDERSCORE@[23; 24)
COLON@[24; 25)
WHITESPACE@[25; 26)
PATH_TYPE@[26; 29)
PATH@[26; 29)
PATH_SEGMENT@[26; 29)
NAME_REF@[26; 29)
IDENT@[26; 29) "u64"
R_PAREN@[29; 30)
SEMI@[30; 31)
WHITESPACE@[31; 32)
R_CURLY@[32; 33)
WHITESPACE@[33; 34)