mirror of https://github.com/tc39/test262.git
42 lines
1.4 KiB
JavaScript
42 lines
1.4 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.
|
|
/*---
|
|
esid: sec-prepareforordinarycall
|
|
description: >
|
|
Creation of new variable environment for the function parameters and body
|
|
(as disinct from that for the function's BindingIdentifier)
|
|
info: |
|
|
[...]
|
|
3. Let callerContext be the running execution context.
|
|
4. Let calleeContext be PrepareForOrdinaryCall(F, undefined).
|
|
[...]
|
|
|
|
9.2.1.1 PrepareForOrdinaryCall
|
|
|
|
[...]
|
|
8. Let localEnv be NewFunctionEnvironment(F, newTarget).
|
|
9. Set the LexicalEnvironment of calleeContext to localEnv.
|
|
10. Set the VariableEnvironment of calleeContext to localEnv.
|
|
[...]
|
|
---*/
|
|
|
|
var name = 'outside';
|
|
var probeBefore = function() { return name; };
|
|
var probeBody;
|
|
|
|
// This test intentionally elides parameter expressions because their presence
|
|
// triggers the creation of an additional LexicalEnvironment dedicated to the
|
|
// function body (see sec-functiondeclarationinstantiation)
|
|
var func = function name() {
|
|
// The initializer is intentionally omitted from the following
|
|
// VariableStatement in order to demonstrate that a new binding is created
|
|
// (and not simply re-used from the FunctionExpression's BindingIdentifier).
|
|
var name;
|
|
probeBody = function() { return name; };
|
|
};
|
|
|
|
func();
|
|
|
|
assert.sameValue(probeBefore(), 'outside');
|
|
assert.sameValue(probeBody(), undefined);
|