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Add optional range parameter to SyntaxTreeParams

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When range is provided, instead of showing the syntax for the whole file, we'll
show the syntax tree for the given range.
This commit is contained in:
Ville Penttinen 2019-03-03 12:02:55 +02:00
parent 17aaece6b3
commit ac52d9a1f1
4 changed files with 148 additions and 5 deletions
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12
crates/ra_ide_api/src/lib.rs
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@ -38,7 +38,7 @@ mod marks;
use std::sync::Arc;
use ra_syntax::{SourceFile, TreeArc, TextRange, TextUnit, AstNode};
use ra_syntax::{SourceFile, TreeArc, TextRange, TextUnit, AstNode, algo};
use ra_text_edit::TextEdit;
use ra_db::{
SourceDatabase, CheckCanceled,
@ -245,8 +245,14 @@ impl Analysis {
/// Returns a syntax tree represented as `String`, for debug purposes.
// FIXME: use a better name here.
pub fn syntax_tree(&self, file_id: FileId) -> String {
self.db.parse(file_id).syntax().debug_dump()
pub fn syntax_tree(&self, file_id: FileId, text_range: Option<TextRange>) -> String {
if let Some(text_range) = text_range {
let file = self.db.parse(file_id);
let node = algo::find_covering_node(file.syntax(), text_range);
node.debug_dump()
} else {
self.db.parse(file_id).syntax().debug_dump()
}
}
/// Returns an edit to remove all newlines in the range, cleaning up minor