mirror of https://github.com/tc39/test262.git
28 lines
1.1 KiB
JavaScript
28 lines
1.1 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-block-runtime-semantics-evaluation
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description: Retainment of existing variable environment for BlockStatement
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info: |
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1. Let oldEnv be the running execution context's LexicalEnvironment.
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2. Let blockEnv be NewDeclarativeEnvironment(oldEnv).
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3. Perform BlockDeclarationInstantiation(StatementList, blockEnv).
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4. Set the running execution context's LexicalEnvironment to blockEnv.
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5. Let blockValue be the result of evaluating StatementList.
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6. Set the running execution context's LexicalEnvironment to oldEnv.
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7. Return blockValue.
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---*/
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var x = 'outside';
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var probeBefore = function() { return x; };
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var probeInside;
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{
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var x = 'inside';
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probeInside = function() { return x; };
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}
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assert.sameValue(probeBefore(), 'inside', 'reference preceeding statement');
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assert.sameValue(probeInside(), 'inside', 'reference within statement');
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assert.sameValue(x, 'inside', 'reference following statement');
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