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Resolve implicit format args in syntax highlighting

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This commit is contained in:
Lukas Wirth 2023-12-05 16:30:57 +01:00
parent d2cd30007c
commit fe0a85ca29
9 changed files with 136 additions and 74 deletions
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45
crates/hir/src/semantics.rs
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@ -403,17 +403,29 @@ impl<'db> SemanticsImpl<'db> {
)
}
pub fn resolve_offset_in_format_args(
pub fn as_format_args_parts(
&self,
string: ast::String,
offset: TextSize,
) -> Option<(TextRange, Option<PathResolution>)> {
debug_assert!(offset <= string.syntax().text_range().len());
let literal = string.syntax().parent().filter(|it| it.kind() == SyntaxKind::LITERAL)?;
let format_args = ast::FormatArgsExpr::cast(literal.parent()?)?;
let source_analyzer = &self.analyze_no_infer(format_args.syntax())?;
let format_args = self.wrap_node_infile(format_args);
source_analyzer.resolve_offset_in_format_args(self.db, format_args.as_ref(), offset)
string: &ast::String,
) -> Option<Vec<(TextRange, Option<PathResolution>)>> {
if let Some(quote) = string.open_quote_text_range() {
return self
.descend_into_macros(DescendPreference::SameText, string.syntax().clone())
.into_iter()
.find_map(|token| {
let string = ast::String::cast(token)?;
let literal =
string.syntax().parent().filter(|it| it.kind() == SyntaxKind::LITERAL)?;
let format_args = ast::FormatArgsExpr::cast(literal.parent()?)?;
let source_analyzer = self.analyze_no_infer(format_args.syntax())?;
let format_args = self.wrap_node_infile(format_args);
let res = source_analyzer
.as_format_args_parts(self.db, format_args.as_ref())?
.map(|(range, res)| (range + quote.end(), res))
.collect();
Some(res)
});
}
None
}
pub fn check_for_format_args_template(
@ -438,6 +450,19 @@ impl<'db> SemanticsImpl<'db> {
None
}
fn resolve_offset_in_format_args(
&self,
string: ast::String,
offset: TextSize,
) -> Option<(TextRange, Option<PathResolution>)> {
debug_assert!(offset <= string.syntax().text_range().len());
let literal = string.syntax().parent().filter(|it| it.kind() == SyntaxKind::LITERAL)?;
let format_args = ast::FormatArgsExpr::cast(literal.parent()?)?;
let source_analyzer = &self.analyze_no_infer(format_args.syntax())?;
let format_args = self.wrap_node_infile(format_args);
source_analyzer.resolve_offset_in_format_args(self.db, format_args.as_ref(), offset)
}
/// Maps a node down by mapping its first and last token down.
pub fn descend_node_into_attributes<N: AstNode>(&self, node: N) -> SmallVec<[N; 1]> {
// This might not be the correct way to do this, but it works for now