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Parse default unsafe & default const

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This commit is contained in:
Avi Dessauer 2020-06-03 15:21:47 -04:00
parent 65a3cc21ed
commit fb632c747d
2 changed files with 45 additions and 15 deletions
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26
crates/ra_parser/src/grammar/items.rs
View File

@ -118,7 +118,15 @@ pub(super) fn maybe_item(p: &mut Parser, m: Marker, flavor: ItemFlavor) -> Resul
&& p.at_contextual_kw("default")
&& (match p.nth(1) {
T![impl] => true,
T![fn] | T![type] => {
T![unsafe] => {
if T![impl] == p.nth(2) {
p.bump_remap(T![default]);
p.bump_remap(T![unsafe]);
has_mods = true;
}
false
}
T![fn] | T![type] | T![const] => {
if let ItemFlavor::Mod = flavor {
true
} else {
@ -187,6 +195,9 @@ pub(super) fn maybe_item(p: &mut Parser, m: Marker, flavor: ItemFlavor) -> Resul
// test default_impl
// default impl Foo {}
// test default_unsafe_impl
// default unsafe impl Foo {}
// test_err default_fn_type
// trait T {
// default type T = Bar;
@ -199,6 +210,19 @@ pub(super) fn maybe_item(p: &mut Parser, m: Marker, flavor: ItemFlavor) -> Resul
// default fn foo() {}
// }
// test_err default_const
// trait T {
// default const f: u8 = 0;
// }
// test default_const
// impl T for Foo {
// default const f: u8 = 0;
// }
T![const] => {
consts::const_def(p, m);
}
// test unsafe_default_impl
// unsafe default impl Foo {}
T![impl] => {

16
crates/ra_syntax/test_data/parser/inline/err/0010_wrong_order_fns.rast
View File

@ -17,23 +17,29 @@ SOURCE_FILE@0..50
L_CURLY@22..23 "{"
R_CURLY@23..24 "}"
WHITESPACE@24..25 "\n"
ERROR@25..31
CONST_DEF@25..46
UNSAFE_KW@25..31 "unsafe"
WHITESPACE@31..32 " "
FN_DEF@32..49
CONST_KW@32..37 "const"
WHITESPACE@37..38 " "
ERROR@38..40
FN_KW@38..40 "fn"
WHITESPACE@40..41 " "
NAME@41..44
PATH_TYPE@41..46
PATH@41..46
PATH_SEGMENT@41..46
NAME_REF@41..44
IDENT@41..44 "bar"
PARAM_LIST@44..46
L_PAREN@44..45 "("
R_PAREN@45..46 ")"
WHITESPACE@46..47 " "
BLOCK_EXPR@47..49
ERROR@47..49
L_CURLY@47..48 "{"
R_CURLY@48..49 "}"
WHITESPACE@49..50 "\n"
error 6..6: expected existential, fn, trait or impl
error 31..31: expected existential, fn, trait or impl
error 38..38: expected a name
error 40..40: expected COLON
error 46..46: expected SEMICOLON
error 47..47: expected an item