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add await to syntax, parser for await_expr

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This commit is contained in:
Unreal Hoang 2019-07-20 17:41:31 +09:00
parent e18f8495d6
commit 3a7f07c62d
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GPG Key ID: F66217BDC6F37CFA
5 changed files with 93 additions and 0 deletions
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12
crates/ra_parser/src/grammar/expressions.rs
View File

@ -393,6 +393,18 @@ fn postfix_expr(
T![.] if p.nth(1) == IDENT && (p.nth(2) == T!['('] || p.nth(2) == T![::]) => {
method_call_expr(p, lhs)
}
T![.] if p.nth(1) == AWAIT_KW => {
// test await_expr
// fn foo() {
// x.await;
// x.0.await;
// x.0().await?.hello();
// }
let m = lhs.precede(p);
p.bump();
p.bump();
m.complete(p, AWAIT_EXPR)
}
T![.] => field_expr(p, lhs),
// test postfix_range
// fn foo() { let x = 1..; }

7
crates/ra_parser/src/syntax_kind/generated.rs
View File

@ -105,6 +105,7 @@ pub enum SyntaxKind {
RETURN_KW,
TRY_KW,
BOX_KW,
AWAIT_KW,
AUTO_KW,
DEFAULT_KW,
EXISTENTIAL_KW,
@ -193,6 +194,7 @@ pub enum SyntaxKind {
INDEX_EXPR,
METHOD_CALL_EXPR,
FIELD_EXPR,
AWAIT_EXPR,
TRY_EXPR,
CAST_EXPR,
REF_EXPR,
@ -338,6 +340,7 @@ macro_rules! T {
(return) => { $crate::SyntaxKind::RETURN_KW };
(try) => { $crate::SyntaxKind::TRY_KW };
(box) => { $crate::SyntaxKind::BOX_KW };
(await) => { $crate::SyntaxKind::AWAIT_KW };
(auto) => { $crate::SyntaxKind::AUTO_KW };
(default) => { $crate::SyntaxKind::DEFAULT_KW };
(existential) => { $crate::SyntaxKind::EXISTENTIAL_KW };
@ -398,6 +401,7 @@ impl SyntaxKind {
| RETURN_KW
| TRY_KW
| BOX_KW
| AWAIT_KW
| AUTO_KW
| DEFAULT_KW
| EXISTENTIAL_KW
@ -572,6 +576,7 @@ impl SyntaxKind {
RETURN_KW => &SyntaxInfo { name: "RETURN_KW" },
TRY_KW => &SyntaxInfo { name: "TRY_KW" },
BOX_KW => &SyntaxInfo { name: "BOX_KW" },
AWAIT_KW => &SyntaxInfo { name: "AWAIT_KW" },
AUTO_KW => &SyntaxInfo { name: "AUTO_KW" },
DEFAULT_KW => &SyntaxInfo { name: "DEFAULT_KW" },
EXISTENTIAL_KW => &SyntaxInfo { name: "EXISTENTIAL_KW" },
@ -660,6 +665,7 @@ impl SyntaxKind {
INDEX_EXPR => &SyntaxInfo { name: "INDEX_EXPR" },
METHOD_CALL_EXPR => &SyntaxInfo { name: "METHOD_CALL_EXPR" },
FIELD_EXPR => &SyntaxInfo { name: "FIELD_EXPR" },
AWAIT_EXPR => &SyntaxInfo { name: "AWAIT_EXPR" },
TRY_EXPR => &SyntaxInfo { name: "TRY_EXPR" },
CAST_EXPR => &SyntaxInfo { name: "CAST_EXPR" },
REF_EXPR => &SyntaxInfo { name: "REF_EXPR" },
@ -752,6 +758,7 @@ impl SyntaxKind {
"return" => RETURN_KW,
"try" => TRY_KW,
"box" => BOX_KW,
"await" => AWAIT_KW,
_ => return None,
};
Some(kw)

2
crates/ra_syntax/src/grammar.ron
View File

@ -97,6 +97,7 @@ Grammar(
"return",
"try",
"box",
"await"
],
contextual_keywords: [
"auto",
@ -200,6 +201,7 @@ Grammar(
"INDEX_EXPR",
"METHOD_CALL_EXPR",
"FIELD_EXPR",
"AWAIT_EXPR",
"TRY_EXPR",
"CAST_EXPR",

5
crates/ra_syntax/tests/data/parser/inline/ok/0137_await_expr.rs Normal file
View File

@ -0,0 +1,5 @@
fn foo() {
x.await;
x.0.await;
x.0().await?.hello();
}

67
crates/ra_syntax/tests/data/parser/inline/ok/0137_await_expr.txt Normal file
View File

@ -0,0 +1,67 @@
SOURCE_FILE@[0; 67)
FN_DEF@[0; 66)
FN_KW@[0; 2) "fn"
WHITESPACE@[2; 3) " "
NAME@[3; 6)
IDENT@[3; 6) "foo"
PARAM_LIST@[6; 8)
L_PAREN@[6; 7) "("
R_PAREN@[7; 8) ")"
WHITESPACE@[8; 9) " "
BLOCK@[9; 66)
L_CURLY@[9; 10) "{"
WHITESPACE@[10; 15) "\n "
EXPR_STMT@[15; 23)
AWAIT_EXPR@[15; 22)
PATH_EXPR@[15; 16)
PATH@[15; 16)
PATH_SEGMENT@[15; 16)
NAME_REF@[15; 16)
IDENT@[15; 16) "x"
DOT@[16; 17) "."
AWAIT_KW@[17; 22) "await"
SEMI@[22; 23) ";"
WHITESPACE@[23; 28) "\n "
EXPR_STMT@[28; 38)
AWAIT_EXPR@[28; 37)
FIELD_EXPR@[28; 31)
PATH_EXPR@[28; 29)
PATH@[28; 29)
PATH_SEGMENT@[28; 29)
NAME_REF@[28; 29)
IDENT@[28; 29) "x"
DOT@[29; 30) "."
INT_NUMBER@[30; 31) "0"
DOT@[31; 32) "."
AWAIT_KW@[32; 37) "await"
SEMI@[37; 38) ";"
WHITESPACE@[38; 43) "\n "
EXPR_STMT@[43; 64)
METHOD_CALL_EXPR@[43; 63)
TRY_EXPR@[43; 55)
AWAIT_EXPR@[43; 54)
CALL_EXPR@[43; 48)
FIELD_EXPR@[43; 46)
PATH_EXPR@[43; 44)
PATH@[43; 44)
PATH_SEGMENT@[43; 44)
NAME_REF@[43; 44)
IDENT@[43; 44) "x"
DOT@[44; 45) "."
INT_NUMBER@[45; 46) "0"
ARG_LIST@[46; 48)
L_PAREN@[46; 47) "("
R_PAREN@[47; 48) ")"
DOT@[48; 49) "."
AWAIT_KW@[49; 54) "await"
QUESTION@[54; 55) "?"
DOT@[55; 56) "."
NAME_REF@[56; 61)
IDENT@[56; 61) "hello"
ARG_LIST@[61; 63)
L_PAREN@[61; 62) "("
R_PAREN@[62; 63) ")"
SEMI@[63; 64) ";"
WHITESPACE@[64; 65) "\n"
R_CURLY@[65; 66) "}"
WHITESPACE@[66; 67) "\n"