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Side by Side Diff: test/mjsunit/string-externalize.js

Issue 8513010: Add pointer cache field to external string for access in generated code. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: . Created 9 years, 1 month ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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32 function test() { 32 function test() {
33 var str = ""; 33 var str = "";
34 34
35 // Build an ascii cons string. 35 // Build an ascii cons string.
36 for (var i = 0; i < size; i++) { 36 for (var i = 0; i < size; i++) {
37 str += String.fromCharCode(i & 0x7f); 37 str += String.fromCharCode(i & 0x7f);
38 } 38 }
39 assertTrue(isAsciiString(str)); 39 assertTrue(isAsciiString(str));
40 40
41 var twoByteExternalWithAsciiData = 41 var twoByteExternalWithAsciiData =
42 "AA" + (function() { return "A"; })(); 42 "AAAA" + (function() { return "A"; })();
43 externalizeString(twoByteExternalWithAsciiData, true /* force two-byte */); 43 externalizeString(twoByteExternalWithAsciiData, true /* force two-byte */);
44 assertFalse(isAsciiString(twoByteExternalWithAsciiData)); 44 assertFalse(isAsciiString(twoByteExternalWithAsciiData));
45 45
46 var realTwoByteExternalString = 46 var realTwoByteExternalString =
47 "\u1234\u1234" + (function() { return "\u1234"; })(); 47 "\u1234\u1234" + (function() { return "\u1234"; })();
48 externalizeString(realTwoByteExternalString); 48 externalizeString(realTwoByteExternalString);
49 assertFalse(isAsciiString(realTwoByteExternalString)); 49 assertFalse(isAsciiString(realTwoByteExternalString));
50 50
51 assertTrue(isAsciiString(["a", twoByteExternalWithAsciiData].join(""))); 51 assertTrue(isAsciiString(["a", twoByteExternalWithAsciiData].join("")));
52 52
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80 old_length = str2.length - realTwoByteExternalString.length; 80 old_length = str2.length - realTwoByteExternalString.length;
81 for (var i = 0; i < old_length; i++) { 81 for (var i = 0; i < old_length; i++) {
82 assertEquals(String.fromCharCode(i & 0x7f), str2[i]); 82 assertEquals(String.fromCharCode(i & 0x7f), str2[i]);
83 } 83 }
84 for (var i = old_length; i < str.length; i++) { 84 for (var i = old_length; i < str.length; i++) {
85 assertEquals("\u1234", str2[i]); 85 assertEquals("\u1234", str2[i]);
86 } 86 }
87 87
88 // Flattened string should still be two-byte. 88 // Flattened string should still be two-byte.
89 assertFalse(isAsciiString(str2)); 89 assertFalse(isAsciiString(str2));
90
91 // Test buffered external strings.
92 var charat_str = new Array(5);
93 charat_str[0] = "0123456789ABCDEF0123456789ABCDEF\
94 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF\
95 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF\
96 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF\
97 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF";
98 charat_str[1] = "0123456789ABCDEF";
99 for (var i = 0; i < 6; i++) charat_str[1] += charat_str[1];
100 try { // String can only be externalized once
101 externalizeString(charat_str[0], false);
102 externalizeString(charat_str[1], true);
103 } catch (ex) { }
104 charat_str[2] = charat_str[0].slice(0, -1);
105 charat_str[3] = charat_str[1].slice(0, -1);
106 charat_str[4] = charat_str[0] + charat_str[0];
107
108 for (var i = 0; i < 5; i++) {
109 assertEquals('B', charat_str[i].charAt(6*16 + 11));
110 assertEquals('C', charat_str[i].charAt(6*16 + 12));
111 assertEquals('A', charat_str[i].charAt(3*16 + 10));
112 assertEquals('B', charat_str[i].charAt(3*16 + 11));
113 }
90 } 114 }
91 115
92 // Run the test many times to ensure IC-s don't break things. 116 // Run the test many times to ensure IC-s don't break things.
93 for (var i = 0; i < 10; i++) { 117 for (var i = 0; i < 10; i++) {
94 test(); 118 test();
95 } 119 }
96 120
97 // Clean up string to make Valgrind happy. 121 // Clean up string to make Valgrind happy.
98 gc(); 122 gc();
99 gc(); 123 gc();
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