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// Copyright 2010 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.
// Flags: --allow-natives-syntax
// Test String.fromCharCode.
// Test char codes larger than 0xffff.
var expected = "";
for (var i = 100; i < 500; i++) {
expected += String.fromCharCode(i);
}
function testCharCodeTruncation() {
var result = "";
for (var i = 0x100000 + 100; i < 0x100000 + 500; i++) {
result += String.fromCharCode(i);
}
assertEquals(String.fromCharCode(0xFFFF), String.fromCharCode(0xFFFFFFFF));
return result;
};
%PrepareFunctionForOptimization(testCharCodeTruncation);
assertEquals(expected, testCharCodeTruncation());
assertEquals(expected, testCharCodeTruncation());
%OptimizeFunctionOnNextCall(testCharCodeTruncation);
assertEquals(expected, testCharCodeTruncation());
// Test various receivers and arguments passed to String.fromCharCode.
Object.prototype.fromCharCode = function(x) {
return this;
};
var fcc = String.fromCharCode;
var fcc2 = fcc;
function constFun(x) {
return function(y) {
return x;
};
}
function test(num) {
assertEquals(" ", String.fromCharCode(0x20));
assertEquals(" ", String.fromCharCode(0x20 + 0x10000));
assertEquals(" ", String.fromCharCode(0x20 - 0x10000));
assertEquals(" ", String.fromCharCode(0x20 + 0.5));
assertEquals("\u1234", String.fromCharCode(0x1234));
assertEquals("\u1234", String.fromCharCode(0x1234 + 0x10000));
assertEquals("\u1234", String.fromCharCode(0x1234 - 0x10000));
assertEquals("\u1234", String.fromCharCode(0x1234 + 0.5));
assertEquals(" ", String.fromCharCode(0x20, 0x20));
assertEquals(" ", String.fromCharCode(0x20 + 0.5, 0x20));
assertEquals(" ", fcc(0x20));
assertEquals(" ", fcc(0x20 + 0x10000));
assertEquals(" ", fcc(0x20 - 0x10000));
assertEquals(" ", fcc(0x20 + 0.5));
assertEquals("\u1234", fcc(0x1234));
assertEquals("\u1234", fcc(0x1234 + 0x10000));
assertEquals("\u1234", fcc(0x1234 - 0x10000));
assertEquals("\u1234", fcc(0x1234 + 0.5));
assertEquals(" ", fcc(0x20, 0x20));
assertEquals(" ", fcc(0x20 + 0.5, 0x20));
var receiver = num < 5 ? String : num < 9 ? 'dummy' : 42;
fcc2 = num < 5 ? fcc :
num < 9 ? constFun(Object('dummy')) : constFun(Object(42));
var expected = num < 5 ? ' ' : num < 9 ? Object('dummy') : Object(42);
assertEquals(expected, receiver.fromCharCode(0x20));
assertEquals(expected, receiver.fromCharCode(0x20 - 0x10000));
assertEquals(expected, receiver.fromCharCode(0x20 + 0.5));
assertEquals(expected, fcc2(0x20));
assertEquals(expected, fcc2(0x20 - 0x10000));
assertEquals(expected, fcc2(0x20 + 0.5));
}
// Use loop to test the custom IC.
for (var i = 0; i < 10; i++) {
test(i);
}
// Test the custom IC works correctly when the map changes.
for (var i = 0; i < 10; i++) {
var expected = i < 5 ? ' ' : 42;
if (i == 5)
String.fromCharCode = function() {
return 42;
};
assertEquals(expected, String.fromCharCode(0x20));
}
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