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// This file was procedurally generated from the following sources:
// - src/function-forms/unscopables-with.case
// - src/function-forms/default/gen-func-expr.template
/*---
description: Symbol.unscopables behavior across scope boundaries (generator function expression)
esid: sec-generator-function-definitions-runtime-semantics-evaluation
features: [globalThis, Symbol.unscopables, generators]
flags: [generated, noStrict]
info: |
GeneratorExpression : function * ( FormalParameters ) { GeneratorBody }
[...]
3. Let closure be GeneratorFunctionCreate(Normal, FormalParameters,
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.
[...]
...
Let envRec be lex's EnvironmentRecord.
Let exists be ? envRec.HasBinding(name).
HasBinding
...
If the withEnvironment flag of envRec is false, return true.
Let unscopables be ? Get(bindings, @@unscopables).
If Type(unscopables) is Object, then
Let blocked be ToBoolean(? Get(unscopables, N)).
If blocked is true, return false.
(The `with` Statement) Runtime Semantics: Evaluation
...
Set the withEnvironment flag of newEnv’s EnvironmentRecord to true.
...
---*/
let count = 0;
var v = 1;
globalThis[Symbol.unscopables] = {
v: true,
};
{
count++;
var callCount = 0;
// Stores a reference `ref` for case evaluation
var ref;
ref = function*(x) {
count++;
with (globalThis) {
count++;
assert.sameValue(v, undefined, 'The value of `v` is expected to equal `undefined`');
}
count++;
var v = x;
with (globalThis) {
count++;
assert.sameValue(v, 10, 'The value of `v` is 10');
v = 20;
}
assert.sameValue(v, 20, 'The value of `v` is 20');
assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1');
callCount = callCount + 1;
};
ref(10).next();
assert.sameValue(callCount, 1, 'generator function invoked exactly once');
count++;
}
assert.sameValue(count, 6, 'The value of `count` is 6');
reportCompare(0, 0);