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https://github.com/rust-lang/rust-analyzer
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G: const item
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parent
5e7504b978
commit
e5273d33d0
8 changed files with 114 additions and 14 deletions
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@ -25,6 +25,7 @@ Grammar(
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"const",
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"static",
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"mut",
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"unsafe",
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],
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tokens: [
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"ERROR",
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@ -89,6 +90,7 @@ Grammar(
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"MOD_ITEM",
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"USE_ITEM",
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"STATIC_ITEM",
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"CONST_ITEM",
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"EXTERN_BLOCK",
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"ENUM_VARIANT",
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21
src/parser/event_parser/grammar/items/consts.rs
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21
src/parser/event_parser/grammar/items/consts.rs
Normal file
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@ -0,0 +1,21 @@
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use super::*;
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pub(super) fn static_item(p: &mut Parser) {
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const_or_static(p, STATIC_KW)
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}
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pub(super) fn const_item(p: &mut Parser) {
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const_or_static(p, CONST_KW)
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}
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fn const_or_static(p: &mut Parser, kw: SyntaxKind) {
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assert!(p.at(kw));
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p.bump();
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p.eat(MUT_KW); // TODO: validator to forbid const mut
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p.expect(IDENT);
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p.expect(COLON);
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types::type_ref(p);
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p.expect(EQ);
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expressions::expr(p);
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p.expect(SEMI);
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}
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@ -2,6 +2,7 @@ use super::*;
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mod structs;
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mod use_item;
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mod consts;
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pub(super) fn mod_contents(p: &mut Parser, stop_on_r_curly: bool) {
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attributes::inner_attributes(p);
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@ -47,9 +48,26 @@ fn item(p: &mut Parser) {
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}
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}
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STATIC_KW => {
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static_item(p);
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consts::static_item(p);
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STATIC_ITEM
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}
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CONST_KW => match p.nth(1) {
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FN_KW => {
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p.bump();
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fn_item(p);
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FN_ITEM
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}
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UNSAFE_KW if p.nth(2) == FN_KW => {
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p.bump();
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p.bump();
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fn_item(p);
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FN_ITEM
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}
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_ => {
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consts::const_item(p);
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CONST_ITEM
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}
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},
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MOD_KW => {
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mod_item(p);
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MOD_ITEM
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@ -101,19 +119,6 @@ fn extern_block(p: &mut Parser) {
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p.bump();
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p.expect(R_CURLY);
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}
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fn static_item(p: &mut Parser) {
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assert!(p.at(STATIC_KW));
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p.bump();
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p.eat(MUT_KW);
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p.expect(IDENT);
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p.expect(COLON);
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types::type_ref(p);
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p.expect(EQ);
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expressions::expr(p);
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p.expect(SEMI);
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}
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fn mod_item(p: &mut Parser) {
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assert!(p.at(MOD_KW));
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p.bump();
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@ -31,6 +31,7 @@ pub enum SyntaxKind {
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CONST_KW,
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STATIC_KW,
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MUT_KW,
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UNSAFE_KW,
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ERROR,
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IDENT,
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UNDERSCORE,
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@ -90,6 +91,7 @@ pub enum SyntaxKind {
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MOD_ITEM,
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USE_ITEM,
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STATIC_ITEM,
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CONST_ITEM,
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EXTERN_BLOCK,
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ENUM_VARIANT,
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NAMED_FIELD,
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@ -144,6 +146,7 @@ impl SyntaxKind {
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CONST_KW => &SyntaxInfo { name: "CONST_KW" },
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STATIC_KW => &SyntaxInfo { name: "STATIC_KW" },
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MUT_KW => &SyntaxInfo { name: "MUT_KW" },
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UNSAFE_KW => &SyntaxInfo { name: "UNSAFE_KW" },
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ERROR => &SyntaxInfo { name: "ERROR" },
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IDENT => &SyntaxInfo { name: "IDENT" },
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UNDERSCORE => &SyntaxInfo { name: "UNDERSCORE" },
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@ -203,6 +206,7 @@ impl SyntaxKind {
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MOD_ITEM => &SyntaxInfo { name: "MOD_ITEM" },
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USE_ITEM => &SyntaxInfo { name: "USE_ITEM" },
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STATIC_ITEM => &SyntaxInfo { name: "STATIC_ITEM" },
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CONST_ITEM => &SyntaxInfo { name: "CONST_ITEM" },
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EXTERN_BLOCK => &SyntaxInfo { name: "EXTERN_BLOCK" },
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ENUM_VARIANT => &SyntaxInfo { name: "ENUM_VARIANT" },
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NAMED_FIELD => &SyntaxInfo { name: "NAMED_FIELD" },
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@ -253,6 +257,7 @@ pub(crate) fn ident_to_keyword(ident: &str) -> Option<SyntaxKind> {
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"const" => Some(CONST_KW),
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"static" => Some(STATIC_KW),
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"mut" => Some(MUT_KW),
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"unsafe" => Some(UNSAFE_KW),
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_ => None,
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}
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}
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5
tests/data/parser/ok/0024_const_fn.rs
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5
tests/data/parser/ok/0024_const_fn.rs
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@ -0,0 +1,5 @@
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const fn foo() {
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}
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const unsafe fn foo() {
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}
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29
tests/data/parser/ok/0024_const_fn.txt
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29
tests/data/parser/ok/0024_const_fn.txt
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@ -0,0 +1,29 @@
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FILE@[0; 46)
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FN_ITEM@[0; 20)
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CONST_KW@[0; 5)
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WHITESPACE@[5; 6)
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FN_KW@[6; 8)
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WHITESPACE@[8; 9)
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IDENT@[9; 12) "foo"
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L_PAREN@[12; 13)
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R_PAREN@[13; 14)
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WHITESPACE@[14; 15)
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L_CURLY@[15; 16)
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WHITESPACE@[16; 17)
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R_CURLY@[17; 18)
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WHITESPACE@[18; 20)
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FN_ITEM@[20; 46)
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CONST_KW@[20; 25)
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WHITESPACE@[25; 26)
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UNSAFE_KW@[26; 32)
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WHITESPACE@[32; 33)
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FN_KW@[33; 35)
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WHITESPACE@[35; 36)
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IDENT@[36; 39) "foo"
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L_PAREN@[39; 40)
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R_PAREN@[40; 41)
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WHITESPACE@[41; 42)
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L_CURLY@[42; 43)
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WHITESPACE@[43; 44)
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R_CURLY@[44; 45)
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WHITESPACE@[45; 46)
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2
tests/data/parser/ok/0025_const_item.rs
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2
tests/data/parser/ok/0025_const_item.rs
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@ -0,0 +1,2 @@
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const FOO: u32 = 92;
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const mut BAR: u32 = 62;
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31
tests/data/parser/ok/0025_const_item.txt
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31
tests/data/parser/ok/0025_const_item.txt
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@ -0,0 +1,31 @@
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FILE@[0; 46)
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CONST_ITEM@[0; 21)
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CONST_KW@[0; 5)
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WHITESPACE@[5; 6)
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IDENT@[6; 9) "FOO"
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COLON@[9; 10)
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WHITESPACE@[10; 11)
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IDENT@[11; 14) "u32"
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WHITESPACE@[14; 15)
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EQ@[15; 16)
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LITERAL@[16; 19)
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WHITESPACE@[16; 17)
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INT_NUMBER@[17; 19)
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SEMI@[19; 20)
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WHITESPACE@[20; 21)
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CONST_ITEM@[21; 46)
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CONST_KW@[21; 26)
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WHITESPACE@[26; 27)
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MUT_KW@[27; 30)
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WHITESPACE@[30; 31)
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IDENT@[31; 34) "BAR"
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COLON@[34; 35)
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WHITESPACE@[35; 36)
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IDENT@[36; 39) "u32"
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WHITESPACE@[39; 40)
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EQ@[40; 41)
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LITERAL@[41; 44)
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WHITESPACE@[41; 42)
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INT_NUMBER@[42; 44)
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SEMI@[44; 45)
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WHITESPACE@[45; 46)
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