Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +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 | |
| 28 | // Flags: --expose-externalize-string --expose-gc |
| 29 | // Test data pointer caching of external strings. |
| 30 | |
| 31 | function test() { |
| 32 | // Test string.charAt. |
| 33 | var charat_str = new Array(5); |
| 34 | charat_str[0] = "0123456789ABCDEF0123456789ABCDEF\ |
| 35 | 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF\ |
| 36 | 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF\ |
| 37 | 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF\ |
| 38 | 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF"; |
| 39 | charat_str[1] = "0123456789ABCDEF"; |
| 40 | for (var i = 0; i < 6; i++) charat_str[1] += charat_str[1]; |
| 41 | try { // String can only be externalized once |
| 42 | externalizeString(charat_str[0], false); |
| 43 | externalizeString(charat_str[1], true); |
| 44 | } catch (ex) { } |
| 45 | charat_str[2] = charat_str[0].slice(0, -1); |
| 46 | charat_str[3] = charat_str[1].slice(0, -1); |
| 47 | charat_str[4] = charat_str[0] + charat_str[0]; |
| 48 | |
| 49 | for (var i = 0; i < 5; i++) { |
| 50 | assertEquals('B', charat_str[i].charAt(6*16 + 11)); |
| 51 | assertEquals('C', charat_str[i].charAt(6*16 + 12)); |
| 52 | assertEquals('A', charat_str[i].charAt(3*16 + 10)); |
| 53 | assertEquals('B', charat_str[i].charAt(3*16 + 11)); |
| 54 | } |
| 55 | |
| 56 | charat_short = "012"; |
| 57 | try { // String can only be externalized once |
| 58 | externalizeString(charat_short, true); |
| 59 | } catch (ex) { } |
| 60 | assertEquals("1", charat_short.charAt(1)); |
| 61 | |
| 62 | // Test regexp and short substring. |
| 63 | var re = /(A|B)/; |
| 64 | var rere = /(T.{1,2}B)/; |
| 65 | var ascii = "ABCDEFGHIJKLMNOPQRST"; |
| 66 | var twobyte = "_ABCDEFGHIJKLMNOPQRST"; |
| 67 | try { |
| 68 | externalizeString(ascii, false); |
| 69 | externalizeString(twobyte, true); |
| 70 | } catch (ex) { } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 71 | assertTrue(isOneByteString(ascii)); |
| 72 | assertFalse(isOneByteString(twobyte)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 73 | var ascii_slice = ascii.slice(1,-1); |
| 74 | var twobyte_slice = twobyte.slice(2,-1); |
| 75 | var ascii_cons = ascii + ascii; |
| 76 | var twobyte_cons = twobyte + twobyte; |
| 77 | for (var i = 0; i < 2; i++) { |
| 78 | assertEquals(["A", "A"], re.exec(ascii)); |
| 79 | assertEquals(["B", "B"], re.exec(ascii_slice)); |
| 80 | assertEquals(["TAB", "TAB"], rere.exec(ascii_cons)); |
| 81 | assertEquals(["A", "A"], re.exec(twobyte)); |
| 82 | assertEquals(["B", "B"], re.exec(twobyte_slice)); |
| 83 | assertEquals(["T_AB", "T_AB"], rere.exec(twobyte_cons)); |
| 84 | assertEquals("DEFG", ascii_slice.substr(2, 4)); |
| 85 | assertEquals("DEFG", twobyte_slice.substr(2, 4)); |
| 86 | assertEquals("DEFG", ascii_cons.substr(3, 4)); |
| 87 | assertEquals("DEFG", twobyte_cons.substr(4, 4)); |
| 88 | } |
| 89 | |
| 90 | // Test adding external strings |
| 91 | var short_ascii = "E="; |
| 92 | var long_ascii = "MCsquared"; |
| 93 | var short_twobyte = "E\u1234"; |
| 94 | var long_twobyte = "MCsquare\u1234"; |
| 95 | try { // String can only be externalized once |
| 96 | externalizeString(short_ascii, false); |
| 97 | externalizeString(long_ascii, false); |
| 98 | externalizeString(short_twobyte, true); |
| 99 | externalizeString(long_twobyte, true); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 100 | assertTrue(isOneByteString(short_asii) && isOneByteString(long_ascii)); |
| 101 | assertFalse(isOneByteString(short_twobyte) || isOneByteString(long_twobyte)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 102 | } catch (ex) { } |
| 103 | assertEquals("E=MCsquared", short_ascii + long_ascii); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 104 | assertTrue(isOneByteString(short_ascii + long_ascii)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 105 | assertEquals("MCsquaredE=", long_ascii + short_ascii); |
| 106 | assertEquals("E\u1234MCsquare\u1234", short_twobyte + long_twobyte); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 107 | assertFalse(isOneByteString(short_twobyte + long_twobyte)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 108 | assertEquals("E=MCsquared", "E=" + long_ascii); |
| 109 | assertEquals("E\u1234MCsquared", short_twobyte + "MCsquared"); |
| 110 | assertEquals("E\u1234MCsquared", short_twobyte + long_ascii); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 111 | assertFalse(isOneByteString(short_twobyte + long_ascii)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | // Run the test many times to ensure IC-s don't break things. |
| 115 | for (var i = 0; i < 10; i++) { |
| 116 | test(); |
| 117 | } |
| 118 | |
| 119 | // Clean up string to make Valgrind happy. |
| 120 | gc(); |
| 121 | gc(); |