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39 lines
931 B
JavaScript
39 lines
931 B
JavaScript
// Copyright (C) 2017 Lucas Azzola. 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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author: Lucas Azzola
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esid: pending
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description: lexical environment runtime semantics for optional catch binding
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features: [optional-catch-binding]
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info: |
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Runtime Semantics: CatchClauseEvaluation
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Catch : catch Block
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Let oldEnv be the running execution context's LexicalEnvironment.
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Let catchEnv be NewDeclarativeEnvironment(oldEnv).
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Set the running execution context's LexicalEnvironment to catchEnv.
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(...)
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Set the running execution context's LexicalEnvironment to oldEnv.
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Return Completion(B).
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---*/
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let x = 1;
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let ranCatch = false;
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try {
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x = 2;
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throw new Error();
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} catch {
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let x = 3;
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let y = true;
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ranCatch = true;
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}
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assert(ranCatch, 'executed `catch` block');
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assert.sameValue(x, 2);
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assert.throws(ReferenceError, function() {
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y;
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});
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