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Implement syntax tree support for syntax inside string

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This allows us to select a string or portions of it and try parsing it as rust
syntax. This is mostly helpful when developing tests where the test
itself contains some rust syntax as a string.
This commit is contained in:
Ville Penttinen 2019-03-04 08:54:54 +02:00
parent 0db95fc812
commit 16ecd276f0
3 changed files with 206 additions and 8 deletions
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11
crates/ra_ide_api/src/lib.rs
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@ -32,13 +32,14 @@ mod references;
mod impls;
mod assists;
mod diagnostics;
mod syntax_tree;
#[cfg(test)]
mod marks;
use std::sync::Arc;
use ra_syntax::{SourceFile, TreeArc, TextRange, TextUnit, AstNode, algo};
use ra_syntax::{SourceFile, TreeArc, TextRange, TextUnit};
use ra_text_edit::TextEdit;
use ra_db::{
SourceDatabase, CheckCanceled,
@ -246,13 +247,7 @@ 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, 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()
}
syntax_tree::syntax_tree(&self.db, file_id, text_range)
}
/// Returns an edit to remove all newlines in the range, cleaning up minor