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|
use ra_syntax::{ast, AstNode,};
use ra_editor::HighlightedRange;
use ra_db::SyntaxDatabase;
use crate::{
db::RootDatabase,
FileId, Cancelable,
};
pub(crate) fn highlight(db: &RootDatabase, file_id: FileId) -> Cancelable<Vec<HighlightedRange>> {
let source_file = db.source_file(file_id);
let mut res = ra_editor::highlight(source_file.syntax());
for macro_call in source_file
.syntax()
.descendants()
.filter_map(ast::MacroCall::cast)
{
if let Some((off, exp)) = hir::MacroDef::ast_expand(macro_call) {
let mapped_ranges = ra_editor::highlight(exp.syntax().borrowed())
.into_iter()
.filter_map(|r| {
let mapped_range = exp.map_range_back(r.range)?;
let res = HighlightedRange {
range: mapped_range + off,
tag: r.tag,
};
Some(res)
});
res.extend(mapped_ranges);
}
}
Ok(res)
}
#[cfg(test)]
mod tests {
use crate::mock_analysis::single_file;
use test_utils::assert_eq_dbg;
#[test]
fn highlights_code_inside_macros() {
let (analysis, file_id) = single_file(
"
fn main() {
ctry!({ let x = 92; x});
}
",
);
let highlights = analysis.highlight(file_id).unwrap();
assert_eq_dbg(
r#"[HighlightedRange { range: [13; 15), tag: "keyword" },
HighlightedRange { range: [16; 20), tag: "function" },
HighlightedRange { range: [41; 46), tag: "macro" },
HighlightedRange { range: [49; 52), tag: "keyword" },
HighlightedRange { range: [57; 59), tag: "literal" },
HighlightedRange { range: [49; 52), tag: "keyword" },
HighlightedRange { range: [53; 54), tag: "function" },
HighlightedRange { range: [57; 59), tag: "literal" },
HighlightedRange { range: [61; 62), tag: "text" }]"#,
&highlights,
)
}
// FIXME: this test is not really necessary: artifact of the inital hacky
// macros implementation.
#[test]
fn highlight_query_group_macro() {
let (analysis, file_id) = single_file(
"
salsa::query_group! {
pub trait HirDatabase: SyntaxDatabase {}
}
",
);
let highlights = analysis.highlight(file_id).unwrap();
assert_eq_dbg(
r#"[HighlightedRange { range: [20; 32), tag: "macro" },
HighlightedRange { range: [13; 18), tag: "text" },
HighlightedRange { range: [51; 54), tag: "keyword" },
HighlightedRange { range: [55; 60), tag: "keyword" },
HighlightedRange { range: [61; 72), tag: "function" }]"#,
&highlights,
)
}
}
|
