mirror of
https://github.com/tc39/test262.git
synced 2025-11-03 21:24:30 +01:00
107 lines
3.5 KiB
JavaScript
107 lines
3.5 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
/*---
|
|
description: Referencing the arguments object from a default parameter (static class expression generator method)
|
|
esid: sec-class-definitions-runtime-semantics-evaluation
|
|
es6id: 14.5.16
|
|
features: [generators, default-parameters]
|
|
info: |
|
|
ClassExpression : class BindingIdentifieropt ClassTail
|
|
|
|
1. If BindingIdentifieropt is not present, let className be undefined.
|
|
2. Else, let className be StringValue of BindingIdentifier.
|
|
3. Let value be the result of ClassDefinitionEvaluation of ClassTail
|
|
with argument className.
|
|
[...]
|
|
|
|
14.5.14 Runtime Semantics: ClassDefinitionEvaluation
|
|
|
|
21. For each ClassElement m in order from methods
|
|
a. If IsStatic of m is false, then
|
|
b. Else,
|
|
Let status be the result of performing PropertyDefinitionEvaluation
|
|
for m with arguments F and false.
|
|
[...]
|
|
|
|
14.4.13 Runtime Semantics: PropertyDefinitionEvaluation
|
|
|
|
GeneratorMethod :
|
|
* PropertyName ( StrictFormalParameters ) { GeneratorBody }
|
|
|
|
1. Let propKey be the result of evaluating PropertyName.
|
|
2. ReturnIfAbrupt(propKey).
|
|
3. If the function code for this GeneratorMethod is strict mode code,
|
|
let strict be true. Otherwise let strict be false.
|
|
4. Let scope be the running execution context's LexicalEnvironment.
|
|
5. Let closure be GeneratorFunctionCreate(Method,
|
|
StrictFormalParameters, GeneratorBody, scope, strict).
|
|
|
|
9.2.1 [[Call]] ( thisArgument, argumentsList)
|
|
|
|
[...]
|
|
7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
|
|
[...]
|
|
|
|
9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
|
|
|
|
1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
|
|
[...]
|
|
|
|
9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
|
|
|
|
[...]
|
|
23. Let iteratorRecord be Record {[[iterator]]:
|
|
CreateListIterator(argumentsList), [[done]]: false}.
|
|
24. If hasDuplicates is true, then
|
|
[...]
|
|
25. Else,
|
|
b. Let formalStatus be IteratorBindingInitialization for formals with
|
|
iteratorRecord and env as arguments.
|
|
[...]
|
|
|
|
14.1.19 Runtime Semantics: IteratorBindingInitialization
|
|
|
|
FormalsList : FormalsList , FormalParameter
|
|
|
|
1. Let status be the result of performing IteratorBindingInitialization for
|
|
FormalsList using iteratorRecord and environment as the arguments.
|
|
2. ReturnIfAbrupt(status).
|
|
3. Return the result of performing IteratorBindingInitialization for
|
|
FormalParameter using iteratorRecord and environment as the arguments.
|
|
---*/
|
|
|
|
var callCount = 0;
|
|
var C = class {
|
|
static *method(x, _ = 0) {
|
|
assert.sameValue(x, undefined, 'parameter binding value (initial)');
|
|
assert.sameValue(
|
|
arguments[0], undefined, 'arguments property value (initial)'
|
|
);
|
|
|
|
arguments[0] = 1;
|
|
|
|
assert.sameValue(
|
|
x, undefined, 'parameter binding value (after arguments modification)'
|
|
);
|
|
assert.sameValue(
|
|
arguments[0], 1, 'arguments property value (after arguments modification)'
|
|
);
|
|
|
|
x = 2;
|
|
|
|
assert.sameValue(
|
|
x, 2, 'parameter binding value (after parameter binding modification)'
|
|
);
|
|
assert.sameValue(
|
|
arguments[0],
|
|
1,
|
|
'arguments property value (after parameter binding modification)'
|
|
);
|
|
callCount = callCount + 1;
|
|
}
|
|
};
|
|
|
|
C.method().next();
|
|
|
|
assert.sameValue(callCount, 1, 'method invoked exactly once');
|