Steve Block | 5915150 | 2010-09-22 15:07:15 +0100 | [diff] [blame] | 1 | // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 28 | // Flags: --allow-natives-syntax |
| 29 | |
Steve Block | 5915150 | 2010-09-22 15:07:15 +0100 | [diff] [blame] | 30 | // Test String.fromCharCode. |
| 31 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 32 | // Test char codes larger than 0xffff. |
| 33 | var expected = ""; |
| 34 | for (var i = 100; i < 500; i++) { |
| 35 | expected += String.fromCharCode(i); |
| 36 | } |
| 37 | |
| 38 | function testCharCodeTruncation() { |
| 39 | var result = ""; |
| 40 | for (var i = 0x100000 + 100; i < 0x100000 + 500; i++) { |
| 41 | result += String.fromCharCode(i); |
| 42 | } |
| 43 | assertEquals(String.fromCharCode(0xFFFF), String.fromCharCode(0xFFFFFFFF)); |
| 44 | return result; |
| 45 | } |
| 46 | |
| 47 | assertEquals(expected, testCharCodeTruncation()); |
| 48 | assertEquals(expected, testCharCodeTruncation()); |
| 49 | %OptimizeFunctionOnNextCall(testCharCodeTruncation); |
| 50 | assertEquals(expected, testCharCodeTruncation()); |
Steve Block | 5915150 | 2010-09-22 15:07:15 +0100 | [diff] [blame] | 51 | |
| 52 | // Test various receivers and arguments passed to String.fromCharCode. |
| 53 | |
| 54 | Object.prototype.fromCharCode = function(x) { return this; }; |
| 55 | |
| 56 | var fcc = String.fromCharCode; |
| 57 | var fcc2 = fcc; |
| 58 | |
| 59 | function constFun(x) { return function(y) { return x; }; } |
| 60 | |
| 61 | function test(num) { |
| 62 | assertEquals(" ", String.fromCharCode(0x20)); |
| 63 | assertEquals(" ", String.fromCharCode(0x20 + 0x10000)); |
| 64 | assertEquals(" ", String.fromCharCode(0x20 - 0x10000)); |
| 65 | assertEquals(" ", String.fromCharCode(0x20 + 0.5)); |
| 66 | |
| 67 | assertEquals("\u1234", String.fromCharCode(0x1234)); |
| 68 | assertEquals("\u1234", String.fromCharCode(0x1234 + 0x10000)); |
| 69 | assertEquals("\u1234", String.fromCharCode(0x1234 - 0x10000)); |
| 70 | assertEquals("\u1234", String.fromCharCode(0x1234 + 0.5)); |
| 71 | |
| 72 | assertEquals(" ", String.fromCharCode(0x20, 0x20)); |
| 73 | assertEquals(" ", String.fromCharCode(0x20 + 0.5, 0x20)); |
| 74 | |
| 75 | assertEquals(" ", fcc(0x20)); |
| 76 | assertEquals(" ", fcc(0x20 + 0x10000)); |
| 77 | assertEquals(" ", fcc(0x20 - 0x10000)); |
| 78 | assertEquals(" ", fcc(0x20 + 0.5)); |
| 79 | |
| 80 | assertEquals("\u1234", fcc(0x1234)); |
| 81 | assertEquals("\u1234", fcc(0x1234 + 0x10000)); |
| 82 | assertEquals("\u1234", fcc(0x1234 - 0x10000)); |
| 83 | assertEquals("\u1234", fcc(0x1234 + 0.5)); |
| 84 | |
| 85 | assertEquals(" ", fcc(0x20, 0x20)); |
| 86 | assertEquals(" ", fcc(0x20 + 0.5, 0x20)); |
| 87 | |
| 88 | var receiver = (num < 5) ? String : (num < 9) ? "dummy" : 42; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 89 | fcc2 = (num < 5) ? fcc |
| 90 | : (num < 9) ? constFun(Object("dummy")) |
| 91 | : constFun(Object(42)); |
| 92 | var expected = (num < 5) ? " " : (num < 9) ? Object("dummy") : Object(42); |
Steve Block | 5915150 | 2010-09-22 15:07:15 +0100 | [diff] [blame] | 93 | assertEquals(expected, receiver.fromCharCode(0x20)); |
| 94 | assertEquals(expected, receiver.fromCharCode(0x20 - 0x10000)); |
| 95 | assertEquals(expected, receiver.fromCharCode(0x20 + 0.5)); |
| 96 | assertEquals(expected, fcc2(0x20)); |
| 97 | assertEquals(expected, fcc2(0x20 - 0x10000)); |
| 98 | assertEquals(expected, fcc2(0x20 + 0.5)); |
| 99 | } |
| 100 | |
| 101 | // Use loop to test the custom IC. |
| 102 | for (var i = 0; i < 10; i++) { |
| 103 | test(i); |
| 104 | } |
| 105 | |
Steve Block | 5915150 | 2010-09-22 15:07:15 +0100 | [diff] [blame] | 106 | // Test the custom IC works correctly when the map changes. |
| 107 | for (var i = 0; i < 10; i++) { |
| 108 | var expected = (i < 5) ? " " : 42; |
| 109 | if (i == 5) String.fromCharCode = function() { return 42; }; |
| 110 | assertEquals(expected, String.fromCharCode(0x20)); |
| 111 | } |