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Switch parser to use tokens

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This commit is contained in:
Aleksey Kladov 2021-11-14 22:13:44 +03:00
parent d5ad0f3ca0
commit 26bfd6023f
6 changed files with 47 additions and 53 deletions
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5
crates/parser/src/grammar/expressions.rs
View file

@ -296,10 +296,7 @@ fn lhs(p: &mut Parser, r: Restrictions) -> Option<(CompletedMarker, BlockLike)>
T![&] => {
m = p.start();
p.bump(T![&]);
if p.at(IDENT)
&& p.at_contextual_kw("raw")
&& (p.nth_at(1, T![mut]) || p.nth_at(1, T![const]))
{
if p.at_contextual_kw(T![raw]) && (p.nth_at(1, T![mut]) || p.nth_at(1, T![const])) {
p.bump_remap(T![raw]);
p.bump_any();
} else {

12
crates/parser/src/grammar/items.rs
View file

@ -122,14 +122,14 @@ pub(super) fn opt_item(p: &mut Parser, m: Marker) -> Result<(), Marker> {
has_mods = true;
abi(p);
}
if p.at(IDENT) && p.at_contextual_kw("auto") && p.nth(1) == T![trait] {
if p.at_contextual_kw(T![auto]) && p.nth(1) == T![trait] {
p.bump_remap(T![auto]);
has_mods = true;
}
// test default_item
// default impl T for Foo {}
if p.at(IDENT) && p.at_contextual_kw("default") {
if p.at_contextual_kw(T![default]) {
match p.nth(1) {
T![fn] | T![type] | T![const] | T![impl] => {
p.bump_remap(T![default]);
@ -176,7 +176,7 @@ pub(super) fn opt_item(p: &mut Parser, m: Marker) -> Result<(), Marker> {
// test existential_type
// existential type Foo: Fn() -> usize;
if p.at(IDENT) && p.at_contextual_kw("existential") && p.nth(1) == T![type] {
if p.at_contextual_kw(T![existential]) && p.nth(1) == T![type] {
p.bump_remap(T![existential]);
has_mods = true;
}
@ -224,10 +224,10 @@ fn opt_item_without_modifiers(p: &mut Parser, m: Marker) -> Result<(), Marker> {
T![type] => type_alias(p, m),
T![struct] => adt::strukt(p, m),
T![enum] => adt::enum_(p, m),
IDENT if p.at_contextual_kw("union") && p.nth(1) == IDENT => adt::union(p, m),
IDENT if p.at_contextual_kw(T![union]) && p.nth(1) == IDENT => adt::union(p, m),
T![macro] => macro_def(p, m),
IDENT if p.at_contextual_kw("macro_rules") && p.nth(1) == BANG => macro_rules(p, m),
IDENT if p.at_contextual_kw(T![macro_rules]) && p.nth(1) == BANG => macro_rules(p, m),
T![const] if (la == IDENT || la == T![_] || la == T![mut]) => consts::konst(p, m),
T![static] => consts::static_(p, m),
@ -319,7 +319,7 @@ pub(crate) fn extern_item_list(p: &mut Parser) {
}
fn macro_rules(p: &mut Parser, m: Marker) {
assert!(p.at_contextual_kw("macro_rules"));
assert!(p.at_contextual_kw(T![macro_rules]));
p.bump_remap(T![macro_rules]);
p.expect(T![!]);

2
crates/parser/src/grammar/items/adt.rs
View file

@ -10,7 +10,7 @@ pub(super) fn strukt(p: &mut Parser, m: Marker) {
// test union_item
// struct U { i: i32, f: f32 }
pub(super) fn union(p: &mut Parser, m: Marker) {
assert!(p.at_contextual_kw("union"));
assert!(p.at_contextual_kw(T![union]));
p.bump_remap(T![union]);
struct_or_union(p, m, false);
}