language-servers/rust-analyzer
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⬆️ rust-analyzer

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This commit is contained in:
Laurențiu Nicola 2023-02-13 13:55:14 +02:00
parent 3e0e51c108
commit bc45c7659a
321 changed files with 11210 additions and 9720 deletions
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53
crates/parser/src/shortcuts.rs
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@ -43,7 +43,16 @@ impl<'a> LexedStr<'a> {
res.was_joint();
}
res.push(kind);
// Tag the token as joint if it is float with a fractional part
// we use this jointness to inform the parser about what token split
// event to emit when we encounter a float literal in a field access
if kind == SyntaxKind::FLOAT_NUMBER {
if !self.text(i).ends_with('.') {
res.was_joint();
}
}
}
was_joint = true;
}
}
@ -63,6 +72,9 @@ impl<'a> LexedStr<'a> {
Step::Token { kind, n_input_tokens: n_raw_tokens } => {
builder.token(kind, n_raw_tokens)
}
Step::FloatSplit { ends_in_dot: has_pseudo_dot } => {
builder.float_split(has_pseudo_dot)
}
Step::Enter { kind } => builder.enter(kind),
Step::Exit => builder.exit(),
Step::Error { msg } => {
@ -109,6 +121,16 @@ impl Builder<'_, '_> {
self.do_token(kind, n_tokens as usize);
}
fn float_split(&mut self, has_pseudo_dot: bool) {
match mem::replace(&mut self.state, State::Normal) {
State::PendingEnter => unreachable!(),
State::PendingExit => (self.sink)(StrStep::Exit),
State::Normal => (),
}
self.eat_trivias();
self.do_float_split(has_pseudo_dot);
}
fn enter(&mut self, kind: SyntaxKind) {
match mem::replace(&mut self.state, State::Normal) {
State::PendingEnter => {
@ -164,6 +186,37 @@ impl Builder<'_, '_> {
self.pos += n_tokens;
(self.sink)(StrStep::Token { kind, text });
}
fn do_float_split(&mut self, has_pseudo_dot: bool) {
let text = &self.lexed.range_text(self.pos..self.pos + 1);
self.pos += 1;
match text.split_once('.') {
Some((left, right)) => {
assert!(!left.is_empty());
(self.sink)(StrStep::Enter { kind: SyntaxKind::NAME_REF });
(self.sink)(StrStep::Token { kind: SyntaxKind::INT_NUMBER, text: left });
(self.sink)(StrStep::Exit);
// here we move the exit up, the original exit has been deleted in process
(self.sink)(StrStep::Exit);
(self.sink)(StrStep::Token { kind: SyntaxKind::DOT, text: "." });
if has_pseudo_dot {
assert!(right.is_empty(), "{left}.{right}");
self.state = State::Normal;
} else {
(self.sink)(StrStep::Enter { kind: SyntaxKind::NAME_REF });
(self.sink)(StrStep::Token { kind: SyntaxKind::INT_NUMBER, text: right });
(self.sink)(StrStep::Exit);
// the parser creates an unbalanced start node, we are required to close it here
self.state = State::PendingExit;
}
}
None => unreachable!(),
}
}
}
fn n_attached_trivias<'a>(