style: rename crates to kebab case

crates/hir-def/src/src.rs

@@ -0,0 +1,85 @@
+//! Utilities for mapping between hir IDs and the surface syntax.
+
+use hir_expand::InFile;
+use la_arena::ArenaMap;
+use syntax::ast;
+
+use crate::{
+    db::DefDatabase, item_tree::ItemTreeNode, AssocItemLoc, ItemLoc, Macro2Loc, MacroRulesLoc,
+    ProcMacroLoc,
+};
+
+pub trait HasSource {
+    type Value;
+    fn source(&self, db: &dyn DefDatabase) -> InFile<Self::Value>;
+}
+
+impl<N: ItemTreeNode> HasSource for AssocItemLoc<N> {
+    type Value = N::Source;
+
+    fn source(&self, db: &dyn DefDatabase) -> InFile<N::Source> {
+        let tree = self.id.item_tree(db);
+        let ast_id_map = db.ast_id_map(self.id.file_id());
+        let root = db.parse_or_expand(self.id.file_id()).unwrap();
+        let node = &tree[self.id.value];
+
+        InFile::new(self.id.file_id(), ast_id_map.get(node.ast_id()).to_node(&root))
+    }
+}
+
+impl<N: ItemTreeNode> HasSource for ItemLoc<N> {
+    type Value = N::Source;
+
+    fn source(&self, db: &dyn DefDatabase) -> InFile<N::Source> {
+        let tree = self.id.item_tree(db);
+        let ast_id_map = db.ast_id_map(self.id.file_id());
+        let root = db.parse_or_expand(self.id.file_id()).unwrap();
+        let node = &tree[self.id.value];
+
+        InFile::new(self.id.file_id(), ast_id_map.get(node.ast_id()).to_node(&root))
+    }
+}
+
+impl HasSource for Macro2Loc {
+    type Value = ast::MacroDef;
+
+    fn source(&self, db: &dyn DefDatabase) -> InFile<Self::Value> {
+        let tree = self.id.item_tree(db);
+        let ast_id_map = db.ast_id_map(self.id.file_id());
+        let root = db.parse_or_expand(self.id.file_id()).unwrap();
+        let node = &tree[self.id.value];
+
+        InFile::new(self.id.file_id(), ast_id_map.get(node.ast_id()).to_node(&root))
+    }
+}
+
+impl HasSource for MacroRulesLoc {
+    type Value = ast::MacroRules;
+
+    fn source(&self, db: &dyn DefDatabase) -> InFile<Self::Value> {
+        let tree = self.id.item_tree(db);
+        let ast_id_map = db.ast_id_map(self.id.file_id());
+        let root = db.parse_or_expand(self.id.file_id()).unwrap();
+        let node = &tree[self.id.value];
+
+        InFile::new(self.id.file_id(), ast_id_map.get(node.ast_id()).to_node(&root))
+    }
+}
+
+impl HasSource for ProcMacroLoc {
+    type Value = ast::Fn;
+
+    fn source(&self, db: &dyn DefDatabase) -> InFile<Self::Value> {
+        let tree = self.id.item_tree(db);
+        let ast_id_map = db.ast_id_map(self.id.file_id());
+        let root = db.parse_or_expand(self.id.file_id()).unwrap();
+        let node = &tree[self.id.value];
+
+        InFile::new(self.id.file_id(), ast_id_map.get(node.ast_id()).to_node(&root))
+    }
+}
+
+pub trait HasChildSource<ChildId> {
+    type Value;
+    fn child_source(&self, db: &dyn DefDatabase) -> InFile<ArenaMap<ChildId, Self::Value>>;
+}