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Enable hovering function parameter inlay hints

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This commit is contained in:
Lukas Wirth 2022-05-19 14:32:09 +02:00
parent 74230e26ff
commit b08bbd7be0
2 changed files with 28 additions and 13 deletions
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30
crates/ide/src/inlay_hints.rs
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@ -592,23 +592,35 @@ fn param_name_hints(
.filter_map(|((param, _ty), arg)| {
// Only annotate hints for expressions that exist in the original file
let range = sema.original_range_opt(arg.syntax())?;
let (param_name, param_syntax) = match param.as_ref()? {
Either::Left(pat) => ("self".to_string(), pat.syntax()),
let (param_name, name_syntax) = match param.as_ref()? {
Either::Left(pat) => ("self".to_string(), pat.name()),
Either::Right(pat) => match pat {
ast::Pat::IdentPat(it) => (it.name()?.to_string(), pat.syntax()),
ast::Pat::IdentPat(it) => (it.name()?.to_string(), it.name()),
_ => return None,
},
};
Some((sema.original_range_opt(param_syntax), param_name, arg, range))
Some((name_syntax, param_name, arg, range))
})
.filter(|(_, param_name, arg, _)| {
!should_hide_param_name_hint(sema, &callable, param_name, arg)
})
.map(|(param_range, param_name, _, FileRange { range, .. })| InlayHint {
range,
kind: InlayKind::ParameterHint,
label: param_name,
tooltip: param_range.map(|it| InlayTooltip::HoverOffset(it.file_id, it.range.start())),
.map(|(param, param_name, _, FileRange { range, .. })| {
let mut tooltip = None;
if let Some(name) = param {
if let hir::CallableKind::Function(f) = callable.kind() {
// assert the file is cached so we can map out of macros
if let Some(_) = sema.source(f) {
tooltip = sema.original_range_opt(name.syntax());
}
}
}
InlayHint {
range,
kind: InlayKind::ParameterHint,
label: param_name,
tooltip: tooltip.map(|it| InlayTooltip::HoverOffset(it.file_id, it.range.start())),
}
});
acc.extend(hints);