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Simplify from_source

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This commit is contained in:
Aleksey Kladov 2019-12-12 14:48:33 +01:00
parent 82e9b24558
commit 63c192b34a
1 changed files with 34 additions and 49 deletions
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83
crates/ra_hir/src/from_source.rs
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@ -44,16 +44,16 @@ impl FromSource for Enum {
impl FromSource for Trait {
type Ast = ast::TraitDef;
fn from_source(db: &(impl DefDatabase + AstDatabase), src: InFile<Self::Ast>) -> Option<Self> {
// XXX: use `.parent()` to avoid finding ourselves
let parent = src.value.syntax().parent()?;
let container = Container::find(db, src.with_value(parent).as_ref())?;
container.child_by_source(db)[keys::TRAIT].get(&src).copied().map(Trait::from)
analyze_container(db, src.as_ref().map(|it| it.syntax()))[keys::TRAIT]
.get(&src)
.copied()
.map(Trait::from)
}
}
impl FromSource for Function {
type Ast = ast::FnDef;
fn from_source(db: &(impl DefDatabase + AstDatabase), src: InFile<Self::Ast>) -> Option<Self> {
Container::find(db, src.as_ref().map(|it| it.syntax()))?.child_by_source(db)[keys::FUNCTION]
analyze_container(db, src.as_ref().map(|it| it.syntax()))[keys::FUNCTION]
.get(&src)
.copied()
.map(Function::from)
@ -63,7 +63,7 @@ impl FromSource for Function {
impl FromSource for Const {
type Ast = ast::ConstDef;
fn from_source(db: &(impl DefDatabase + AstDatabase), src: InFile<Self::Ast>) -> Option<Self> {
Container::find(db, src.as_ref().map(|it| it.syntax()))?.child_by_source(db)[keys::CONST]
analyze_container(db, src.as_ref().map(|it| it.syntax()))[keys::CONST]
.get(&src)
.copied()
.map(Const::from)
@ -72,7 +72,7 @@ impl FromSource for Const {
impl FromSource for Static {
type Ast = ast::StaticDef;
fn from_source(db: &(impl DefDatabase + AstDatabase), src: InFile<Self::Ast>) -> Option<Self> {
Container::find(db, src.as_ref().map(|it| it.syntax()))?.child_by_source(db)[keys::STATIC]
analyze_container(db, src.as_ref().map(|it| it.syntax()))[keys::STATIC]
.get(&src)
.copied()
.map(Static::from)
@ -82,8 +82,7 @@ impl FromSource for Static {
impl FromSource for TypeAlias {
type Ast = ast::TypeAliasDef;
fn from_source(db: &(impl DefDatabase + AstDatabase), src: InFile<Self::Ast>) -> Option<Self> {
Container::find(db, src.as_ref().map(|it| it.syntax()))?.child_by_source(db)
[keys::TYPE_ALIAS]
analyze_container(db, src.as_ref().map(|it| it.syntax()))[keys::TYPE_ALIAS]
.get(&src)
.copied()
.map(TypeAlias::from)
@ -109,10 +108,10 @@ impl FromSource for MacroDef {
impl FromSource for ImplBlock {
type Ast = ast::ImplBlock;
fn from_source(db: &(impl DefDatabase + AstDatabase), src: InFile<Self::Ast>) -> Option<Self> {
// XXX: use `.parent()` to avoid finding ourselves
let parent = src.value.syntax().parent()?;
let container = Container::find(db, src.with_value(parent).as_ref())?;
container.child_by_source(db)[keys::IMPL].get(&src).copied().map(ImplBlock::from)
analyze_container(db, src.as_ref().map(|it| it.syntax()))[keys::IMPL]
.get(&src)
.copied()
.map(ImplBlock::from)
}
}
@ -262,44 +261,30 @@ where
Some(DEF::from_ast_id(ctx, item_id))
}
enum Container {
Trait(Trait),
ImplBlock(ImplBlock),
Module(Module),
fn analyze_container(db: &impl DefDatabase, src: InFile<&SyntaxNode>) -> DynMap {
_analyze_container(db, src).unwrap_or_default()
}
impl Container {
fn find(db: &impl DefDatabase, src: InFile<&SyntaxNode>) -> Option<Container> {
// FIXME: this doesn't try to handle nested declarations
for container in src.value.ancestors() {
let res = match_ast! {
match container {
ast::TraitDef(it) => {
let c = Trait::from_source(db, src.with_value(it))?;
Container::Trait(c)
},
ast::ImplBlock(it) => {
let c = ImplBlock::from_source(db, src.with_value(it))?;
Container::ImplBlock(c)
},
_ => { continue },
}
};
return Some(res);
}
let module_source = ModuleSource::from_child_node(db, src);
let c = Module::from_definition(db, src.with_value(module_source))?;
Some(Container::Module(c))
fn _analyze_container(db: &impl DefDatabase, src: InFile<&SyntaxNode>) -> Option<DynMap> {
// FIXME: this doesn't try to handle nested declarations
for container in src.value.ancestors().skip(1) {
let res = match_ast! {
match container {
ast::TraitDef(it) => {
let c = Trait::from_source(db, src.with_value(it))?;
c.id.child_by_source(db)
},
ast::ImplBlock(it) => {
let c = ImplBlock::from_source(db, src.with_value(it))?;
c.id.child_by_source(db)
},
_ => { continue },
}
};
return Some(res);
}
}
impl ChildBySource for Container {
fn child_by_source(&self, db: &impl DefDatabase) -> DynMap {
match self {
Container::Trait(it) => it.id.child_by_source(db),
Container::ImplBlock(it) => it.id.child_by_source(db),
Container::Module(it) => it.id.child_by_source(db),
}
}
let module_source = ModuleSource::from_child_node(db, src);
let c = Module::from_definition(db, src.with_value(module_source))?;
Some(c.id.child_by_source(db))
}