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Add function property support to the JS engine (fn.prop = val, fn.prop, fn.method()) enabling the Test262 assert harness pattern. Implement Test262 execution mode in the JS262 harness with simplified sta.js/assert.js shims. Vendor 50 real tc39/test262 tests via curation script (35 pass, 15 known_fail). Engine changes: - JsObject: add Debug impl and has() method for presence checks - JsFunction: add properties field (Rc-shared JsObject) - Interpreter: handle function property get/set/call/compound-assign/update with user-property-over-builtin precedence Harness changes: - Add Test262 variant to Js262Mode with relaxed manifest validation - Implement run_test262_case with harness prepending and error classification - Create sta.js (Test262Error shim) and assert.js (assert.sameValue etc.) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
30 lines
892 B
JavaScript
30 lines
892 B
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-prepareforordinarycall
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description: >
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Removal of variable environment for the function parameters and body
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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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[...]
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8. Remove calleeContext from the execution context stack and restore
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callerContext as the running execution context.
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[...]
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---*/
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var probe;
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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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(function() {
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var x = 'inside';
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probe = function() { return x; };
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}());
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var x = 'outside';
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assert.sameValue(probe(), 'inside');
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assert.sameValue(x, 'outside');
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