diff options
Diffstat (limited to 'src/tools/rust-analyzer/crates/parser/src/grammar')
3 files changed, 63 insertions, 15 deletions
diff --git a/src/tools/rust-analyzer/crates/parser/src/grammar/expressions.rs b/src/tools/rust-analyzer/crates/parser/src/grammar/expressions.rs index e7402104e..dcaceade6 100644 --- a/src/tools/rust-analyzer/crates/parser/src/grammar/expressions.rs +++ b/src/tools/rust-analyzer/crates/parser/src/grammar/expressions.rs @@ -564,8 +564,10 @@ fn path_expr(p: &mut Parser<'_>, r: Restrictions) -> (CompletedMarker, BlockLike // test record_lit // fn foo() { // S {}; +// S { x }; // S { x, y: 32, }; // S { x, y: 32, ..Default::default() }; +// S { x: ::default() }; // TupleStruct { 0: 1 }; // } pub(crate) fn record_expr_field_list(p: &mut Parser<'_>) { @@ -582,16 +584,26 @@ pub(crate) fn record_expr_field_list(p: &mut Parser<'_>) { match p.current() { IDENT | INT_NUMBER => { - // test_err record_literal_before_ellipsis_recovery + // test_err record_literal_missing_ellipsis_recovery // fn main() { - // S { field ..S::default() } + // S { S::default() } // } - if p.nth_at(1, T![:]) || p.nth_at(1, T![..]) { - name_ref_or_index(p); - p.expect(T![:]); + if p.nth_at(1, T![::]) { + m.abandon(p); + p.expect(T![..]); + expr(p); + } else { + // test_err record_literal_before_ellipsis_recovery + // fn main() { + // S { field ..S::default() } + // } + if p.nth_at(1, T![:]) || p.nth_at(1, T![..]) { + name_ref_or_index(p); + p.expect(T![:]); + } + expr(p); + m.complete(p, RECORD_EXPR_FIELD); } - expr(p); - m.complete(p, RECORD_EXPR_FIELD); } T![.] if p.at(T![..]) => { m.abandon(p); diff --git a/src/tools/rust-analyzer/crates/parser/src/grammar/paths.rs b/src/tools/rust-analyzer/crates/parser/src/grammar/paths.rs index 8de5d33a1..5dc9c6c82 100644 --- a/src/tools/rust-analyzer/crates/parser/src/grammar/paths.rs +++ b/src/tools/rust-analyzer/crates/parser/src/grammar/paths.rs @@ -118,6 +118,11 @@ fn opt_path_type_args(p: &mut Parser<'_>, mode: Mode) { match mode { Mode::Use => {} Mode::Type => { + // test typepathfn_with_coloncolon + // type F = Start::(Middle) -> (Middle)::End; + if p.at(T![::]) && p.nth_at(2, T!['(']) { + p.bump(T![::]); + } // test path_fn_trait_args // type F = Box<Fn(i32) -> ()>; if p.at(T!['(']) { diff --git a/src/tools/rust-analyzer/crates/parser/src/grammar/patterns.rs b/src/tools/rust-analyzer/crates/parser/src/grammar/patterns.rs index 4cbf10306..bc1224af9 100644 --- a/src/tools/rust-analyzer/crates/parser/src/grammar/patterns.rs +++ b/src/tools/rust-analyzer/crates/parser/src/grammar/patterns.rs @@ -13,6 +13,8 @@ pub(super) const PATTERN_FIRST: TokenSet = T![.], ])); +const PAT_TOP_FIRST: TokenSet = PATTERN_FIRST.union(TokenSet::new(&[T![|]])); + pub(crate) fn pattern(p: &mut Parser<'_>) { pattern_r(p, PAT_RECOVERY_SET); } @@ -75,6 +77,16 @@ fn pattern_single_r(p: &mut Parser<'_>, recovery_set: TokenSet) { // Some(1..) => () // } // + // match () { + // S { a: 0 } => (), + // S { a: 1.. } => (), + // } + // + // match () { + // [0] => (), + // [1..] => (), + // } + // // match (10 as u8, 5 as u8) { // (0, _) => (), // (1.., _) => () @@ -88,11 +100,27 @@ fn pattern_single_r(p: &mut Parser<'_>, recovery_set: TokenSet) { let m = lhs.precede(p); p.bump(range_op); - // `0 .. =>` or `let 0 .. =` or `Some(0 .. )` - // ^ ^ ^ - if p.at(T![=]) | p.at(T![')']) | p.at(T![,]) { + // testing if we're at one of the following positions: + // `0 .. =>` + // ^ + // `let 0 .. =` + // ^ + // `let 0..: _ =` + // ^ + // (1.., _) + // ^ + // `Some(0 .. )` + // ^ + // `S { t: 0.. }` + // ^ + // `[0..]` + // ^ + if matches!(p.current(), T![=] | T![,] | T![:] | T![')'] | T!['}'] | T![']']) { // test half_open_range_pat - // fn f() { let 0 .. = 1u32; } + // fn f() { + // let 0 .. = 1u32; + // let 0..: _ = 1u32; + // } } else { atom_pat(p, recovery_set); } @@ -202,6 +230,7 @@ fn path_or_macro_pat(p: &mut Parser<'_>) -> CompletedMarker { // let S(_) = (); // let S(_,) = (); // let S(_, .. , x) = (); +// let S(| a) = (); // } fn tuple_pat_fields(p: &mut Parser<'_>) { assert!(p.at(T!['('])); @@ -337,6 +366,7 @@ fn ref_pat(p: &mut Parser<'_>) -> CompletedMarker { // let (a,) = (); // let (..) = (); // let () = (); +// let (| a | a, | b) = ((),()); // } fn tuple_pat(p: &mut Parser<'_>) -> CompletedMarker { assert!(p.at(T!['('])); @@ -347,13 +377,13 @@ fn tuple_pat(p: &mut Parser<'_>) -> CompletedMarker { let mut has_rest = false; while !p.at(EOF) && !p.at(T![')']) { has_pat = true; - if !p.at_ts(PATTERN_FIRST) { + if !p.at_ts(PAT_TOP_FIRST) { p.error("expected a pattern"); break; } has_rest |= p.at(T![..]); - pattern(p); + pattern_top(p); if !p.at(T![')']) { has_comma = true; p.expect(T![,]); @@ -367,6 +397,7 @@ fn tuple_pat(p: &mut Parser<'_>) -> CompletedMarker { // test slice_pat // fn main() { // let [a, b, ..] = []; +// let [| a, ..] = []; // } fn slice_pat(p: &mut Parser<'_>) -> CompletedMarker { assert!(p.at(T!['['])); @@ -379,12 +410,12 @@ fn slice_pat(p: &mut Parser<'_>) -> CompletedMarker { fn pat_list(p: &mut Parser<'_>, ket: SyntaxKind) { while !p.at(EOF) && !p.at(ket) { - if !p.at_ts(PATTERN_FIRST) { + if !p.at_ts(PAT_TOP_FIRST) { p.error("expected a pattern"); break; } - pattern(p); + pattern_top(p); if !p.at(ket) { p.expect(T![,]); } |