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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>
29 lines
853 B
JavaScript
29 lines
853 B
JavaScript
// Copyright 2009 the Sputnik 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-assignment-operators-static-semantics-early-errors
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es6id: 12.14.1
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es5id: 11.1.6_A3_T5
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description: Applied to a "covered" IdentifierReference
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info: |
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AssignmentExpression : LeftHandSideExpression = AssignmentExpression
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- It is an early Reference Error if LeftHandSideExpression is neither an
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ObjectLiteral nor an ArrayLiteral and IsValidSimpleAssignmentTarget of
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LeftHandSideExpression is false.
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Static Semantics: IsValidSimpleAssignmentTarget
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IdentifierReference : Identifier
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1. If this IdentifierReference is contained in strict mode code and
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StringValue of Identifier is "eval" or "arguments", return false.
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2. Return true.
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---*/
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var x;
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(x) = 1;
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assert.sameValue(x, 1);
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