1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
use crate::{
SmolStr, SyntaxKind, SyntaxError, SyntaxErrorKind, TextUnit,
parsing::{TreeSink, ParseError},
syntax_node::{GreenNode, RaTypes},
};
use rowan::GreenNodeBuilder;
pub(crate) struct GreenBuilder {
text_pos: TextUnit,
errors: Vec<SyntaxError>,
inner: GreenNodeBuilder<RaTypes>,
}
impl Default for GreenBuilder {
fn default() -> GreenBuilder {
GreenBuilder {
text_pos: TextUnit::default(),
errors: Vec::new(),
inner: GreenNodeBuilder::new(),
}
}
}
impl TreeSink for GreenBuilder {
type Tree = (GreenNode, Vec<SyntaxError>);
fn leaf(&mut self, kind: SyntaxKind, text: SmolStr) {
self.text_pos += TextUnit::of_str(text.as_str());
self.inner.leaf(kind, text);
}
fn start_branch(&mut self, kind: SyntaxKind) {
self.inner.start_internal(kind)
}
fn finish_branch(&mut self) {
self.inner.finish_internal();
}
fn error(&mut self, error: ParseError) {
let error = SyntaxError::new(SyntaxErrorKind::ParseError(error), self.text_pos);
self.errors.push(error)
}
fn finish(self) -> (GreenNode, Vec<SyntaxError>) {
(self.inner.finish(), self.errors)
}
}
|
