65 lines
2.4 KiB
JavaScript
65 lines
2.4 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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// Test dictionary store ICs.
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// Function that stores property 'x' on an object.
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function store(obj) { obj.x = 42; }
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// Create object and force it to dictionary mode by deleting property.
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var o = { x: 32, y: 33 };
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delete o.y;
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// Make the store ic in the 'store' function go into dictionary store
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// case.
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for (var i = 0; i < 3; i++) {
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store(o);
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}
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assertEquals(42, o.x);
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// Test that READ_ONLY property attribute is respected. Make 'x'
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// READ_ONLY.
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Object.defineProperty(o, 'x', { value: 32, writable: false });
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// Attempt to store using the store ic in the 'store' function.
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store(o);
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// Check that the store did not change the value.
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assertEquals(32, o.x);
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// Check that bail-out code works.
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// Smi.
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store(1);
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// Fast case object.
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o = new Object();
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store(o);
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assertEquals(42, o.x);
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// Slow case object without x property.
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delete o.x;
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store(o);
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assertEquals(42, o.x);
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