dan/oxc
1
0
Fork 0
mirror of https://github.com/danbulant/oxc synced 2026-05-19 04:08:41 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

fix(transformer): exponentiation transform: fix duplicate symbols (#6300)

Browse source 
Identifier was being cloned unnecessarily, creating an extra symbol.
This commit is contained in:
overlookmotel 2024-10-06 00:51:27 +00:00
parent 7f5a94b902
commit bd81c5134c
2 changed files with 13 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

30
crates/oxc_transformer/src/es2016/exponentiation_operator.rs
View file

@ -146,17 +146,14 @@ impl<'a, 'ctx> ExponentiationOperator<'a, 'ctx> {
nodes: &mut Vec<'a, Expression<'a>>,
ctx: &mut TraverseCtx<'a>,
) -> Option<Exploded<'a>> {
let node = node.as_simple_assignment_target_mut()?;
let obj = self.get_obj_ref(node, nodes, ctx)?;
let (reference, uid) = match node {
SimpleAssignmentTarget::AssignmentTargetIdentifier(ident) => {
let reference =
AssignmentTarget::AssignmentTargetIdentifier(ctx.ast.alloc(
ctx.clone_identifier_reference(ident.as_ref(), ReferenceFlags::Write),
));
(reference, obj)
AssignmentTarget::AssignmentTargetIdentifier(_) => {
let obj = self.get_obj_ref(node, nodes, ctx).unwrap();
let ident = ctx.ast.move_assignment_target(node);
(ident, obj)
}
match_member_expression!(SimpleAssignmentTarget) => {
match_member_expression!(AssignmentTarget) => {
let obj = self.get_obj_ref(node, nodes, ctx).unwrap();
let member_expr = node.to_member_expression_mut();
let computed = member_expr.is_computed();
let prop = self.get_prop_ref(member_expr, nodes, ctx)?;
@ -202,12 +199,12 @@ impl<'a, 'ctx> ExponentiationOperator<'a, 'ctx> {
/// Make sure side-effects of evaluating `obj` of `obj.ref` and `obj[ref]` only happen once.
fn get_obj_ref(
&mut self,
node: &mut SimpleAssignmentTarget<'a>,
node: &mut AssignmentTarget<'a>,
nodes: &mut Vec<'a, Expression<'a>>,
ctx: &mut TraverseCtx<'a>,
) -> Option<Expression<'a>> {
let reference = match node {
SimpleAssignmentTarget::AssignmentTargetIdentifier(ident) => {
AssignmentTarget::AssignmentTargetIdentifier(ident) => {
let reference = ctx.symbols().get_reference(ident.reference_id().unwrap());
if let Some(symbol_id) = reference.symbol_id() {
// this variable is declared in scope so we can be 100% sure
@ -229,12 +226,11 @@ impl<'a, 'ctx> ExponentiationOperator<'a, 'ctx> {
ReferenceFlags::Read,
))
}
match_member_expression!(SimpleAssignmentTarget) => {
let expr = match node {
SimpleAssignmentTarget::ComputedMemberExpression(e) => &mut e.object,
SimpleAssignmentTarget::StaticMemberExpression(e) => &mut e.object,
SimpleAssignmentTarget::PrivateFieldExpression(e) => &mut e.object,
_ => unreachable!(),
match_member_expression!(AssignmentTarget) => {
let expr = match node.to_member_expression_mut() {
MemberExpression::ComputedMemberExpression(e) => &mut e.object,
MemberExpression::StaticMemberExpression(e) => &mut e.object,
MemberExpression::PrivateFieldExpression(e) => &mut e.object,
};
let expr = ctx.ast.move_expression(expr);
// the object reference that we need to save is locally declared

6
tasks/transform_conformance/snapshots/babel.snap.md
View file

@ -1630,12 +1630,6 @@ x Output mismatch
# babel-plugin-transform-exponentiation-operator (1/4)
* exponentiation-operator/assignment/input.js
Symbol reference IDs mismatch for "num":
after transform: SymbolId(0): [ReferenceId(0), ReferenceId(1), ReferenceId(2)]
rebuilt : SymbolId(0): [ReferenceId(0), ReferenceId(2)]
Reference flags mismatch for "num":
after transform: ReferenceId(2): ReferenceFlags(Write)
rebuilt : ReferenceId(0): ReferenceFlags(Read | Write)
Reference flags mismatch for "num":
after transform: ReferenceId(1): ReferenceFlags(Write)
rebuilt : ReferenceId(2): ReferenceFlags(Read)