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Record derive helper attributes, resolve them in IDE layer

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This commit is contained in:
Lukas Wirth 2022-07-24 14:05:37 +02:00
parent 4e60db2d07
commit aa1491ecde
22 changed files with 144 additions and 58 deletions
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14
crates/hir/src/semantics.rs
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@ -29,9 +29,9 @@ use crate::{
db::HirDatabase,
semantics::source_to_def::{ChildContainer, SourceToDefCache, SourceToDefCtx},
source_analyzer::{resolve_hir_path, SourceAnalyzer},
Access, BindingMode, BuiltinAttr, Callable, ConstParam, Crate, Field, Function, HasSource,
HirFileId, Impl, InFile, Label, LifetimeParam, Local, Macro, Module, ModuleDef, Name, Path,
ScopeDef, ToolModule, Trait, Type, TypeAlias, TypeParam, VariantDef,
Access, BindingMode, BuiltinAttr, Callable, ConstParam, Crate, DeriveHelper, Field, Function,
HasSource, HirFileId, Impl, InFile, Label, LifetimeParam, Local, Macro, Module, ModuleDef,
Name, Path, ScopeDef, ToolModule, Trait, Type, TypeAlias, TypeParam, VariantDef,
};
#[derive(Debug, Clone, PartialEq, Eq)]
@ -47,6 +47,7 @@ pub enum PathResolution {
SelfType(Impl),
BuiltinAttr(BuiltinAttr),
ToolModule(ToolModule),
DeriveHelper(DeriveHelper),
}
impl PathResolution {
@ -71,6 +72,7 @@ impl PathResolution {
PathResolution::BuiltinAttr(_)
| PathResolution::ToolModule(_)
| PathResolution::Local(_)
| PathResolution::DeriveHelper(_)
| PathResolution::ConstParam(_) => None,
PathResolution::TypeParam(param) => Some(TypeNs::GenericParam((*param).into())),
PathResolution::SelfType(impl_def) => Some(TypeNs::SelfType((*impl_def).into())),
@ -856,7 +858,9 @@ impl<'db> SemanticsImpl<'db> {
None
}
}?;
if !self.with_ctx(|ctx| ctx.has_derives(InFile::new(token.file_id, &adt))) {
return None;
}
// Not an attribute, nor a derive, so it's either a builtin or a derive helper
// Try to resolve to a derive helper and downmap
let attr_name = attr.path().and_then(|it| it.as_single_name_ref())?.as_name();
@ -865,7 +869,7 @@ impl<'db> SemanticsImpl<'db> {
def_map.derive_helpers_in_scope(InFile::new(token.file_id, id))?;
let item = Some(adt.into());
let mut res = None;
for (_, derive) in helpers.iter().filter(|(helper, _)| *helper == attr_name) {
for (.., derive) in helpers.iter().filter(|(helper, ..)| *helper == attr_name) {
res = res.or(process_expansion_for_token(
&mut stack,
derive.as_file(),