45 lines
1.3 KiB
Rust
45 lines
1.3 KiB
Rust
use ra_syntax::{ast, AstNode,};
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use ra_db::SourceDatabase;
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use crate::{
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FileId, HighlightedRange,
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db::RootDatabase,
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};
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pub(crate) fn highlight(db: &RootDatabase, file_id: FileId) -> Vec<HighlightedRange> {
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let source_file = db.parse(file_id);
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let mut res = ra_ide_api_light::highlight(source_file.syntax());
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for macro_call in source_file.syntax().descendants().filter_map(ast::MacroCall::cast) {
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if let Some((off, exp)) = hir::MacroDef::ast_expand(macro_call) {
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let mapped_ranges =
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ra_ide_api_light::highlight(&exp.syntax()).into_iter().filter_map(|r| {
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let mapped_range = exp.map_range_back(r.range)?;
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let res = HighlightedRange { range: mapped_range + off, tag: r.tag };
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Some(res)
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});
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res.extend(mapped_ranges);
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}
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}
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res
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}
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#[cfg(test)]
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mod tests {
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use crate::mock_analysis::single_file;
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use insta::assert_debug_snapshot_matches;
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#[test]
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fn highlights_code_inside_macros() {
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let (analysis, file_id) = single_file(
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"
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fn main() {
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vec![{ let x = 92; x}];
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}
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",
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);
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let highlights = analysis.highlight(file_id).unwrap();
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assert_debug_snapshot_matches!("highlights_code_inside_macros", &highlights);
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}
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}
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