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-rw-r--r--crates/ra_hir_expand/src/ast_id_map.rs13
1 files changed, 10 insertions, 3 deletions
diff --git a/crates/ra_hir_expand/src/ast_id_map.rs b/crates/ra_hir_expand/src/ast_id_map.rs
index d19569245..f4d31526a 100644
--- a/crates/ra_hir_expand/src/ast_id_map.rs
+++ b/crates/ra_hir_expand/src/ast_id_map.rs
@@ -6,6 +6,8 @@
6//! changes. 6//! changes.
7 7
8use std::{ 8use std::{
9 any::type_name,
10 fmt,
9 hash::{Hash, Hasher}, 11 hash::{Hash, Hasher},
10 marker::PhantomData, 12 marker::PhantomData,
11}; 13};
@@ -14,7 +16,6 @@ use ra_arena::{Arena, Idx};
14use ra_syntax::{ast, AstNode, AstPtr, SyntaxNode, SyntaxNodePtr}; 16use ra_syntax::{ast, AstNode, AstPtr, SyntaxNode, SyntaxNodePtr};
15 17
16/// `AstId` points to an AST node in a specific file. 18/// `AstId` points to an AST node in a specific file.
17#[derive(Debug)]
18pub struct FileAstId<N: AstNode> { 19pub struct FileAstId<N: AstNode> {
19 raw: ErasedFileAstId, 20 raw: ErasedFileAstId,
20 _ty: PhantomData<fn() -> N>, 21 _ty: PhantomData<fn() -> N>,
@@ -39,11 +40,17 @@ impl<N: AstNode> Hash for FileAstId<N> {
39 } 40 }
40} 41}
41 42
43impl<N: AstNode> fmt::Debug for FileAstId<N> {
44 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
45 write!(f, "FileAstId::<{}>({})", type_name::<N>(), self.raw.into_raw())
46 }
47}
48
42impl<N: AstNode> FileAstId<N> { 49impl<N: AstNode> FileAstId<N> {
43 // Can't make this a From implementation because of coherence 50 // Can't make this a From implementation because of coherence
44 pub fn upcast<M: AstNode>(self) -> FileAstId<M> 51 pub fn upcast<M: AstNode>(self) -> FileAstId<M>
45 where 52 where
46 M: From<N>, 53 N: Into<M>,
47 { 54 {
48 FileAstId { raw: self.raw, _ty: PhantomData } 55 FileAstId { raw: self.raw, _ty: PhantomData }
49 } 56 }
@@ -89,7 +96,7 @@ impl AstIdMap {
89 } 96 }
90 } 97 }
91 98
92 pub(crate) fn get<N: AstNode>(&self, id: FileAstId<N>) -> AstPtr<N> { 99 pub fn get<N: AstNode>(&self, id: FileAstId<N>) -> AstPtr<N> {
93 self.arena[id.raw].clone().cast::<N>().unwrap() 100 self.arena[id.raw].clone().cast::<N>().unwrap()
94 } 101 }
95 102