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Implement offset_of in hir-def and hir-ty

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Lukas Wirth 2023-09-05 12:13:24 +02:00
parent 9b8eb807a3
commit 15048304e3
17 changed files with 120 additions and 193 deletions
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19
crates/parser/src/grammar/expressions/atom.rs
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@ -220,24 +220,39 @@ fn tuple_expr(p: &mut Parser<'_>) -> CompletedMarker {
// fn foo() {
// builtin#asm(0);
// builtin#format_args(0);
// builtin#builtin(0);
// builtin#offset_of(Foo, bar.baz.0);
// }
fn builtin_expr(p: &mut Parser<'_>) -> Option<CompletedMarker> {
let m = p.start();
p.bump_remap(T![builtin]);
p.bump(T![#]);
if p.at_contextual_kw(T![offset_of]) {
p.bump_remap(T![offset_of]);
p.expect(T!['(']);
type_(p);
p.bump(T![,]);
p.expect(T![,]);
while !p.at(EOF) && !p.at(T![')']) {
if p.at(IDENT) || p.at(INT_NUMBER) {
name_ref_or_index(p);
// } else if p.at(FLOAT_NUMBER) {
// FIXME: needs float hack
} else {
p.err_and_bump("expected field name or number");
}
if !p.at(T![')']) {
p.expect(T![.]);
}
}
p.expect(T![')']);
Some(m.complete(p, OFFSET_OF_EXPR))
} else if p.at_contextual_kw(T![format_args]) {
p.bump_remap(T![format_args]);
p.expect(T!['(']);
expr(p);
p.expect(T![')']);
Some(m.complete(p, FORMAT_ARGS_EXPR))
} else if p.at_contextual_kw(T![asm]) {
p.bump_remap(T![asm]);
p.expect(T!['(']);
expr(p);
p.expect(T![')']);