Merge commit '6e92d2345e8231a44556ce7d416451f5f3e6c398' as 'engine262'

2026-08-19 00:31:06 +00:00 · 2026-03-27 10:07:29 +05:30
parent 8f26db5a1f 6e92d2345e
commit b42a69d9f8
433 changed files with 90478 additions and 0 deletions
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+import { surroundingAgent } from '../host-defined/engine.mts';
+import { Value } from '../value.mts';
+import { StringValue } from '../static-semantics/all.mts';
+import { Q, NormalCompletion } from '../completion.mts';
+import type { ParseNode } from '../parser/ParseNode.mts';
+import type { PlainEvaluator, ValueEvaluator } from '../evaluator.mts';
+import {
+  InitializeBoundName, ClassDefinitionEvaluation, type DecoratorDefinitionRecord, DecoratorListEvaluation,
+} from './all.mts';
+
+/** https://tc39.es/ecma262/#sec-runtime-semantics-bindingclassdeclarationevaluation */
+//   ClassDeclaration :
+//     `class` BindingIdentifier ClassTail
+//     `class` ClassTail
+export function* BindingClassDeclarationEvaluation(ClassDeclaration: ParseNode.ClassDeclaration, decorators: readonly DecoratorDefinitionRecord[]): ValueEvaluator {
+  const { BindingIdentifier, ClassTail } = ClassDeclaration;
+  const sourceText = ClassDeclaration.sourceText;
+  if (!BindingIdentifier) {
+    return Q(yield* ClassDefinitionEvaluation(ClassTail, Value.undefined, Value('default'), sourceText, decorators));
+  }
+  // 1. Let className be StringValue of BindingIdentifier.
+  const className = StringValue(BindingIdentifier);
+  // 2. Let value be ? ClassDefinitionEvaluation of ClassTail with arguments className, className, decorators.
+  const value = Q(yield* ClassDefinitionEvaluation(ClassTail, className, className, sourceText, decorators));
+  // 4. Let env be the running execution context's LexicalEnvironment.
+  const env = surroundingAgent.runningExecutionContext.LexicalEnvironment;
+  // 5. Perform ? InitializeBoundName(className, value, env).
+  Q(yield* InitializeBoundName(className, value, env));
+  // 6. Return value.
+  return value;
+}
+
+/** https://tc39.es/ecma262/#sec-class-definitions-runtime-semantics-evaluation */
+//   ClassDeclaration : `class` BindingIdentifier ClassTAil
+export function* Evaluate_ClassDeclaration(ClassDeclaration: ParseNode.ClassDeclaration): PlainEvaluator {
+  const decorators = ClassDeclaration.Decorators ? Q(yield* DecoratorListEvaluation(ClassDeclaration.Decorators)) : [];
+  // 1. Perform ? BindingClassDeclarationEvaluation of this ClassDeclaration.
+  Q(yield* BindingClassDeclarationEvaluation(ClassDeclaration, decorators));
+  // 2. Return NormalCompletion(empty).
+  return NormalCompletion(undefined);
+}