67 lines
2.5 KiB
JavaScript
67 lines
2.5 KiB
JavaScript
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// Copyright 2010 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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function GetX(o) { return o.x; }
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function CallF(o) { return o.f(); }
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function SetX(o) { o.x = 42; }
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function SetXY(o,y) { return o.x = y; }
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function Test(o) {
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SetX(o);
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assertEquals(42, GetX(o));
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assertEquals(87, SetXY(o, 87));
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assertEquals(87, GetX(o));
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assertTrue(SetXY(o, o) === o);
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assertTrue(o === GetX(o), "o === GetX(o)");
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assertEquals("hest", SetXY(o, "hest"));
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assertEquals("hest", GetX(o));
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assertTrue(SetXY(o, Test) === Test);
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assertTrue(Test === GetX(o), "Test === GetX(o)");
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assertEquals(99, CallF(o));
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}
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// Create a bunch of objects with different layouts.
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var o1 = { x: 0, y: 1 };
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var o2 = { y: 1, x: 0 };
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var o3 = { y: 1, z: 2, x: 0 };
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o1.f = o2.f = o3.f = function() { return 99; }
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// Run the test until we're fairly sure we've optimized the
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// polymorphic property access.
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for (var i = 0; i < 1000000; i++) {
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Test(o1);
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Test(o2);
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Test(o3);
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}
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// Make sure that the following doesn't crash.
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GetX(0);
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SetX(0);
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SetXY(0, 0);
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assertThrows("CallF(0)", TypeError);
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