9b5ba090db
It’s unlikely that more items will be added to the module, so it’s simpler for users if `ArenaMap` is re-exported and the module made private.
43 lines
1.3 KiB
Rust
43 lines
1.3 KiB
Rust
//! Utilities for mapping between hir IDs and the surface syntax.
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use hir_expand::InFile;
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use la_arena::ArenaMap;
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use crate::{db::DefDatabase, item_tree::ItemTreeNode, AssocItemLoc, ItemLoc};
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pub trait HasSource {
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type Value;
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fn source(&self, db: &dyn DefDatabase) -> InFile<Self::Value>;
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}
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impl<N: ItemTreeNode> HasSource for AssocItemLoc<N> {
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type Value = N::Source;
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fn source(&self, db: &dyn DefDatabase) -> InFile<N::Source> {
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let tree = db.item_tree(self.id.file_id);
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let ast_id_map = db.ast_id_map(self.id.file_id);
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let root = db.parse_or_expand(self.id.file_id).unwrap();
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let node = &tree[self.id.value];
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InFile::new(self.id.file_id, ast_id_map.get(node.ast_id()).to_node(&root))
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}
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}
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impl<N: ItemTreeNode> HasSource for ItemLoc<N> {
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type Value = N::Source;
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fn source(&self, db: &dyn DefDatabase) -> InFile<N::Source> {
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let tree = db.item_tree(self.id.file_id);
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let ast_id_map = db.ast_id_map(self.id.file_id);
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let root = db.parse_or_expand(self.id.file_id).unwrap();
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let node = &tree[self.id.value];
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InFile::new(self.id.file_id, ast_id_map.get(node.ast_id()).to_node(&root))
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}
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}
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pub trait HasChildSource<ChildId> {
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type Value;
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fn child_source(&self, db: &dyn DefDatabase) -> InFile<ArenaMap<ChildId, Self::Value>>;
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}
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