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40 lines
1.3 KiB
JavaScript
40 lines
1.3 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-ecmascript-function-objects-call-thisargument-argumentslist
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description: >
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Creation of new variable environment for the function parameters and body
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(as disinct from that for the function's BindingIdentifier)
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info: |
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[...]
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3. Let callerContext be the running execution context.
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4. Let calleeContext be PrepareForOrdinaryCall(F, undefined).
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[...]
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9.2.1.1 PrepareForOrdinaryCall
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[...]
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8. Let localEnv be NewFunctionEnvironment(F, newTarget).
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9. Set the LexicalEnvironment of calleeContext to localEnv.
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10. Set the VariableEnvironment of calleeContext to localEnv.
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[...]
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features: [let]
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---*/
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var n = 'outside';
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var probeBefore = function() { return n; };
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var probeInside;
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// This test intentionally elides parameter expressions because their presence
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// triggers the creation of an additional LexicalEnvironment dedicated to the
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// function body (see sec-functiondeclarationinstantiation)
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var func = function n() {
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let n = 'inside';
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probeInside = function() { return n; };
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};
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func();
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assert.sameValue(probeBefore(), 'outside');
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assert.sameValue(probeInside(), 'inside');
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