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Parse unsafe async / const unsafe fns properly

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This commit is contained in:
robojumper 2019-04-03 17:11:56 +02:00
parent c6c88070c4
commit 636270f4a4
5 changed files with 95 additions and 6 deletions
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23
crates/ra_parser/src/grammar/items.rs
View File

@ -79,19 +79,22 @@ pub(super) fn maybe_item(p: &mut Parser, m: Marker, flavor: ItemFlavor) -> Resul
let mut has_mods = false;
// modifiers
// test_err async_without_semicolon
// fn foo() { let _ = async {} }
has_mods |= p.eat(CONST_KW);
if p.at(ASYNC_KW) && p.nth(1) != L_CURLY && p.nth(1) != MOVE_KW && p.nth(1) != PIPE {
p.eat(ASYNC_KW);
has_mods = true;
}
// test_err unsafe_block_in_mod
// fn foo(){} unsafe { } fn bar(){}
if p.at(UNSAFE_KW) && p.nth(1) != L_CURLY {
p.eat(UNSAFE_KW);
has_mods = true;
}
// test_err async_without_semicolon
// fn foo() { let _ = async {} }
if p.at(ASYNC_KW) && p.nth(1) != L_CURLY && p.nth(1) != MOVE_KW && p.nth(1) != PIPE {
p.eat(ASYNC_KW);
has_mods = true;
}
if p.at(EXTERN_KW) {
has_mods = true;
abi(p);
@ -124,6 +127,14 @@ pub(super) fn maybe_item(p: &mut Parser, m: Marker, flavor: ItemFlavor) -> Resul
// test unsafe_fn
// unsafe fn foo() {}
// test combined_fns
// unsafe async fn foo() {}
// const unsafe fn bar() {}
// test_err wrong_order_fns
// async unsafe fn foo() {}
// unsafe const fn bar() {}
FN_KW => {
fn_def(p, flavor);
m.complete(p, FN_DEF);

2
crates/ra_syntax/tests/data/parser/inline/err/0010_wrong_order_fns.rs Normal file
View File

@ -0,0 +1,2 @@
async unsafe fn foo() {}
unsafe const fn bar() {}

39
crates/ra_syntax/tests/data/parser/inline/err/0010_wrong_order_fns.txt Normal file
View File

@ -0,0 +1,39 @@
SOURCE_FILE@[0; 50)
ERROR@[0; 5)
ASYNC_KW@[0; 5) "async"
err: `expected fn, trait or impl`
WHITESPACE@[5; 6) " "
FN_DEF@[6; 24)
UNSAFE_KW@[6; 12) "unsafe"
WHITESPACE@[12; 13) " "
FN_KW@[13; 15) "fn"
WHITESPACE@[15; 16) " "
NAME@[16; 19)
IDENT@[16; 19) "foo"
PARAM_LIST@[19; 21)
L_PAREN@[19; 20) "("
R_PAREN@[20; 21) ")"
WHITESPACE@[21; 22) " "
BLOCK@[22; 24)
L_CURLY@[22; 23) "{"
R_CURLY@[23; 24) "}"
WHITESPACE@[24; 25) "\n"
ERROR@[25; 31)
UNSAFE_KW@[25; 31) "unsafe"
err: `expected fn, trait or impl`
WHITESPACE@[31; 32) " "
FN_DEF@[32; 49)
CONST_KW@[32; 37) "const"
WHITESPACE@[37; 38) " "
FN_KW@[38; 40) "fn"
WHITESPACE@[40; 41) " "
NAME@[41; 44)
IDENT@[41; 44) "bar"
PARAM_LIST@[44; 46)
L_PAREN@[44; 45) "("
R_PAREN@[45; 46) ")"
WHITESPACE@[46; 47) " "
BLOCK@[47; 49)
L_CURLY@[47; 48) "{"
R_CURLY@[48; 49) "}"
WHITESPACE@[49; 50) "\n"

2
crates/ra_syntax/tests/data/parser/inline/ok/0128_combined_fns.rs Normal file
View File

@ -0,0 +1,2 @@
unsafe async fn foo() {}
const unsafe fn bar() {}

35
crates/ra_syntax/tests/data/parser/inline/ok/0128_combined_fns.txt Normal file
View File

@ -0,0 +1,35 @@
SOURCE_FILE@[0; 50)
FN_DEF@[0; 24)
UNSAFE_KW@[0; 6) "unsafe"
WHITESPACE@[6; 7) " "
ASYNC_KW@[7; 12) "async"
WHITESPACE@[12; 13) " "
FN_KW@[13; 15) "fn"
WHITESPACE@[15; 16) " "
NAME@[16; 19)
IDENT@[16; 19) "foo"
PARAM_LIST@[19; 21)
L_PAREN@[19; 20) "("
R_PAREN@[20; 21) ")"
WHITESPACE@[21; 22) " "
BLOCK@[22; 24)
L_CURLY@[22; 23) "{"
R_CURLY@[23; 24) "}"
WHITESPACE@[24; 25) "\n"
FN_DEF@[25; 49)
CONST_KW@[25; 30) "const"
WHITESPACE@[30; 31) " "
UNSAFE_KW@[31; 37) "unsafe"
WHITESPACE@[37; 38) " "
FN_KW@[38; 40) "fn"
WHITESPACE@[40; 41) " "
NAME@[41; 44)
IDENT@[41; 44) "bar"
PARAM_LIST@[44; 46)
L_PAREN@[44; 45) "("
R_PAREN@[45; 46) ")"
WHITESPACE@[46; 47) " "
BLOCK@[47; 49)
L_CURLY@[47; 48) "{"
R_CURLY@[48; 49) "}"
WHITESPACE@[49; 50) "\n"