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Start work on a syntax tree view

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This commit is contained in:
Max Brunsfeld 2023-06-09 14:55:46 -07:00
parent 3d02f7ce5f
commit 086cfe57c5
18 changed files with 446 additions and 97 deletions
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15
crates/language/src/buffer.rs
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@ -8,7 +8,8 @@ use crate::{
language_settings::{language_settings, LanguageSettings},
outline::OutlineItem,
syntax_map::{
SyntaxMap, SyntaxMapCapture, SyntaxMapCaptures, SyntaxSnapshot, ToTreeSitterPoint,
SyntaxLayerInfo, SyntaxMap, SyntaxMapCapture, SyntaxMapCaptures, SyntaxSnapshot,
ToTreeSitterPoint,
},
CodeLabel, LanguageScope, Outline,
};
@ -2116,12 +2117,16 @@ impl BufferSnapshot {
}
}
pub fn language_at<D: ToOffset>(&self, position: D) -> Option<&Arc<Language>> {
pub fn syntax_layer_at<D: ToOffset>(&self, position: D) -> Option<SyntaxLayerInfo> {
let offset = position.to_offset(self);
self.syntax
.layers_for_range(offset..offset, &self.text)
.filter(|l| l.node.end_byte() > offset)
.filter(|l| l.node().end_byte() > offset)
.last()
}
pub fn language_at<D: ToOffset>(&self, position: D) -> Option<&Arc<Language>> {
self.syntax_layer_at(position)
.map(|info| info.language)
.or(self.language.as_ref())
}
@ -2140,7 +2145,7 @@ impl BufferSnapshot {
if let Some(layer_info) = self
.syntax
.layers_for_range(offset..offset, &self.text)
.filter(|l| l.node.end_byte() > offset)
.filter(|l| l.node().end_byte() > offset)
.last()
{
Some(LanguageScope {
@ -2188,7 +2193,7 @@ impl BufferSnapshot {
let range = range.start.to_offset(self)..range.end.to_offset(self);
let mut result: Option<Range<usize>> = None;
'outer: for layer in self.syntax.layers_for_range(range.clone(), &self.text) {
let mut cursor = layer.node.walk();
let mut cursor = layer.node().walk();
// Descend to the first leaf that touches the start of the range,
// and if the range is non-empty, extends beyond the start.