JezK
Edit File: global-load-from-eval.js
// Copyright 2009 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Tests global loads from eval. var x = 27; function test() { function g() { assertEquals(27, eval('x')); function h() { // Shadow with local variable. var x = 22; assertEquals(22, eval('x')); function i(x) { // Shadow with parameter. assertEquals(44, eval('x')); function j() { assertEquals(x, eval('x')); // Shadow with function name. function x() { assertEquals(x, eval('x')); } x(); } j(); } i(44); } h(); } g(); } test(); // Test loading of globals from deeply nested eval. This code is a // bit complicated, but the complication is needed to check that the // code that loads the global variable accounts for the fact that the // global variable becomes shadowed by an eval-introduced variable. var result = 0; function testDeep(source, load, test) { eval(source); function f() { var y = 23; function g() { var z = 25; function h() { eval(load); eval(test); } h(); } g(); } f(); } testDeep('1', 'result = x', 'assertEquals(27, result)'); // Because of the eval-cache, the 'result = x' code gets reused. This // time in a context where the 'x' variable has been shadowed. testDeep('var x = 1', 'result = x', 'assertEquals(1, result)');