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//! Utilities for mapping between hir IDs and the surface syntax.
use hir_expand::InFile;
use ra_arena::map::ArenaMap;
use ra_syntax::ast;
use crate::{db::DefDatabase, ConstLoc, FunctionLoc, StaticLoc, TypeAliasLoc};
pub trait HasSource {
type Value;
fn source(&self, db: &impl DefDatabase) -> InFile<Self::Value>;
}
impl HasSource for FunctionLoc {
type Value = ast::FnDef;
fn source(&self, db: &impl DefDatabase) -> InFile<ast::FnDef> {
let node = self.ast_id.to_node(db);
InFile::new(self.ast_id.file_id, node)
}
}
impl HasSource for TypeAliasLoc {
type Value = ast::TypeAliasDef;
fn source(&self, db: &impl DefDatabase) -> InFile<ast::TypeAliasDef> {
let node = self.ast_id.to_node(db);
InFile::new(self.ast_id.file_id, node)
}
}
impl HasSource for ConstLoc {
type Value = ast::ConstDef;
fn source(&self, db: &impl DefDatabase) -> InFile<ast::ConstDef> {
let node = self.ast_id.to_node(db);
InFile::new(self.ast_id.file_id, node)
}
}
impl HasSource for StaticLoc {
type Value = ast::StaticDef;
fn source(&self, db: &impl DefDatabase) -> InFile<ast::StaticDef> {
let node = self.ast_id.to_node(db);
InFile::new(self.ast_id.file_id, node)
}
}
pub trait HasChildSource {
type ChildId;
type Value;
fn child_source(&self, db: &impl DefDatabase) -> InFile<ArenaMap<Self::ChildId, Self::Value>>;
}
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