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feat: preview adt field when hover

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This commit is contained in:
YangzeLuo 2023-11-08 21:45:32 +08:00
parent 69432287cb
commit 41bcd542e2
2 changed files with 94 additions and 26 deletions
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59
crates/hir/src/display.rs
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@ -1,6 +1,6 @@
//! HirDisplay implementations for various hir types.
use hir_def::{
data::adt::VariantData,
data::adt::{StructKind, VariantData},
generics::{
TypeOrConstParamData, TypeParamProvenance, WherePredicate, WherePredicateTypeTarget,
},
@ -163,7 +163,40 @@ impl HirDisplay for Struct {
write!(f, "{}", self.name(f.db).display(f.db.upcast()))?;
let def_id = GenericDefId::AdtId(AdtId::StructId(self.id));
write_generic_params(def_id, f)?;
let variant_data = self.variant_data(f.db);
if let StructKind::Tuple = variant_data.kind() {
f.write_char('(')?;
let mut it = variant_data.fields().iter().peekable();
while let Some((id, _)) = it.next() {
let field = Field { parent: (*self).into(), id };
field.ty(f.db).hir_fmt(f)?;
if it.peek().is_some() {
f.write_str(", ")?;
}
}
f.write_str(");")?;
}
write_where_clause(def_id, f)?;
if let StructKind::Record = variant_data.kind() {
let fields = self.fields(f.db);
if fields.is_empty() {
f.write_str(" {}")?;
} else {
f.write_str(" {\n")?;
for field in self.fields(f.db) {
f.write_str(" ")?;
field.hir_fmt(f)?;
f.write_str(",\n")?;
}
f.write_str("}")?;
}
}
Ok(())
}
}
@ -176,6 +209,18 @@ impl HirDisplay for Enum {
let def_id = GenericDefId::AdtId(AdtId::EnumId(self.id));
write_generic_params(def_id, f)?;
write_where_clause(def_id, f)?;
let variants = self.variants(f.db);
if !variants.is_empty() {
f.write_str(" {\n")?;
for variant in variants {
f.write_str(" ")?;
variant.hir_fmt(f)?;
f.write_str(",\n")?;
}
f.write_str("}")?;
}
Ok(())
}
}
@ -188,6 +233,18 @@ impl HirDisplay for Union {
let def_id = GenericDefId::AdtId(AdtId::UnionId(self.id));
write_generic_params(def_id, f)?;
write_where_clause(def_id, f)?;
let fields = self.fields(f.db);
if !fields.is_empty() {
f.write_str(" {\n")?;
for field in self.fields(f.db) {
f.write_str(" ")?;
field.hir_fmt(f)?;
f.write_str(",\n")?;
}
f.write_str("}")?;
}
Ok(())
}
}