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feat(semantic): add change_parent_id API in ScopeTree (#6807)

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Part of #6658

This API is useful when we want to move a scope to another scope
This commit is contained in:
Dunqing 2024-10-23 15:29:28 +00:00
parent 088c1b6460
commit e7e60dab68
1 changed files with 18 additions and 1 deletions
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19
crates/oxc_semantic/src/scope.rs
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@ -1,4 +1,4 @@
use std::hash::BuildHasherDefault;
use std::{hash::BuildHasherDefault, mem};
use indexmap::IndexMap;
use rustc_hash::{FxHashMap, FxHasher};
@ -173,6 +173,23 @@ impl ScopeTree {
}
}
/// Change the parent scope of a scope.
///
/// This will also remove the scope from the child list of the old parent and add it to the new parent.
pub fn change_parent_id(&mut self, scope_id: ScopeId, new_parent_id: Option<ScopeId>) {
let old_parent_id = mem::replace(&mut self.parent_ids[scope_id], new_parent_id);
if self.build_child_ids {
// Remove this scope from old parent scope
if let Some(old_parent_id) = old_parent_id {
self.child_ids[old_parent_id].retain(|&child_id| child_id != scope_id);
}
// And add it to new parent scope
if let Some(parent_id) = new_parent_id {
self.child_ids[parent_id].push(scope_id);
}
}
}
/// Delete a scope.
pub fn delete_scope(&mut self, scope_id: ScopeId) {
if self.build_child_ids {