d7f3985e33
Review URL: http://codereview.chromium.org/8321001 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9665 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
205 lines
6.8 KiB
JavaScript
Executable File
205 lines
6.8 KiB
JavaScript
Executable File
// Copyright 2011 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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// Flags: --string-slices --expose-externalize-string
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var s = 'abcdefghijklmn';
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assertEquals(s, s.substr());
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assertEquals(s, s.substr(0));
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assertEquals(s, s.substr('0'));
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assertEquals(s, s.substr(void 0));
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assertEquals(s, s.substr(null));
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assertEquals(s, s.substr(false));
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assertEquals(s, s.substr(0.9));
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assertEquals(s, s.substr({ valueOf: function() { return 0; } }));
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assertEquals(s, s.substr({ toString: function() { return '0'; } }));
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var s1 = s.substring(1);
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assertEquals(s1, s.substr(1));
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assertEquals(s1, s.substr('1'));
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assertEquals(s1, s.substr(true));
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assertEquals(s1, s.substr(1.1));
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assertEquals(s1, s.substr({ valueOf: function() { return 1; } }));
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assertEquals(s1, s.substr({ toString: function() { return '1'; } }));
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assertEquals(s.substring(s.length - 1), s.substr(-1));
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assertEquals(s.substring(s.length - 1), s.substr(-1.2));
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assertEquals(s.substring(s.length - 1), s.substr(-1.7));
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assertEquals(s.substring(s.length - 2), s.substr(-2));
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assertEquals(s.substring(s.length - 2), s.substr(-2.3));
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assertEquals(s.substring(s.length - 2, s.length - 1), s.substr(-2, 1));
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assertEquals(s, s.substr(-100));
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assertEquals('abc', s.substr(-100, 3));
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assertEquals(s1, s.substr(-s.length + 1));
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// assertEquals('', s.substr(0, void 0)); // smjs and rhino
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assertEquals('abcdefghijklmn', s.substr(0, void 0)); // kjs and v8
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assertEquals('', s.substr(0, null));
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assertEquals(s, s.substr(0, String(s.length)));
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assertEquals('a', s.substr(0, true));
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// Test substrings of different lengths and alignments.
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// First ASCII.
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var x = "ASCII";
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for (var i = 0; i < 25; i++) {
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x += (i >> 4).toString(16) + (i & 0x0f).toString(16);
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}
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/x/.exec(x); // Try to force a flatten.
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for (var i = 5; i < 25; i++) {
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for (var j = 0; j < 25; j++) {
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var z = x.substring(i, i+j);
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var w = Math.random() * 42; // Allocate something new in new-space.
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assertEquals(j, z.length);
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for (var k = 0; k < j; k++) {
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assertEquals(x.charAt(i+k), z.charAt(k));
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}
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}
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}
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// Then two-byte strings.
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x = "UC16\u2028"; // Non-ascii char forces two-byte string.
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for (var i = 0; i < 25; i++) {
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x += (i >> 4).toString(16) + (i & 0x0f).toString(16);
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}
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/x/.exec(x); // Try to force a flatten.
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for (var i = 5; i < 25; i++) {
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for (var j = 0; j < 25; j++) {
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var z = x.substring(i, i + j);
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var w = Math.random() * 42; // Allocate something new in new-space.
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assertEquals(j, z.length);
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for (var k = 0; k < j; k++) {
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assertEquals(x.charAt(i+k), z.charAt(k));
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}
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}
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}
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// Keep creating strings to to force allocation failure on substring creation.
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var x = "0123456789ABCDEF";
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x += x; // 2^5
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x += x;
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x += x;
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x += x;
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x += x;
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x += x; // 2^10
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x += x;
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x += x;
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var xl = x.length;
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var cache = [];
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for (var i = 0; i < 1000; i++) {
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var z = x.substring(i % xl);
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assertEquals(xl - (i % xl), z.length);
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cache.push(z);
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}
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// Same with two-byte strings
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var x = "\u2028123456789ABCDEF";
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x += x; // 2^5
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x += x;
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x += x;
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x += x;
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x += x;
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x += x; // 2^10
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x += x;
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x += x;
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var xl = x.length;
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var cache = [];
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for (var i = 0; i < 1000; i++) {
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var z = x.substring(i % xl);
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assertEquals(xl - (i % xl), z.length);
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cache.push(z);
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}
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// Substring of substring.
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var cache = [];
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var last = x;
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var offset = 0;
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for (var i = 0; i < 64; i++) {
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var z = last.substring(i);
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last = z;
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cache.push(z);
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offset += i;
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}
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for (var i = 63; i >= 0; i--) {
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var z = cache.pop();
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assertTrue(/\u2028123456789ABCDEF/.test(z));
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assertEquals(xl - offset, z.length);
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assertEquals(x.charAt(i*(i+1)/2), z.charAt(0));
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offset -= i;
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}
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// Test charAt for different strings.
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function f(s1, s2, s3, i) {
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assertEquals(String.fromCharCode(97+i%11), s1.charAt(i%11));
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assertEquals(String.fromCharCode(97+i%11), s2.charAt(i%11));
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assertEquals(String.fromCharCode(98+i%11), s3.charAt(i%11));
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assertEquals(String.fromCharCode(101), s3.charAt(3));
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}
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flat = "abcdefghijkl12345";
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cons = flat + flat.toUpperCase();
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slice = "abcdefghijklmn12345".slice(1, -1);
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for ( var i = 0; i < 1000; i++) {
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f(flat, cons, slice, i);
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}
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flat = "abcdefghijkl1\u20232345";
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cons = flat + flat.toUpperCase();
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slice = "abcdefghijklmn1\u20232345".slice(1, -1);
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for ( var i = 0; i < 1000; i++) {
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f(flat, cons, slice, i);
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}
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// Concatenate substrings.
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var ascii = 'abcdefghijklmnop';
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var utf = '\u03B1\u03B2\u03B3\u03B4\u03B5\u03B6\u03B7\u03B8\u03B9\u03BA\u03BB';
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assertEquals("klmno", ascii.substring(10,15) + ascii.substring(16));
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assertEquals("\u03B4\u03B7", utf.substring(3,4) + utf.substring(6,7));
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assertEquals("klp", ascii.substring(10,12) + ascii.substring(15,16));
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assertEquals("\u03B1\u03B4\u03B5", utf.substring(0,1) + utf.substring(5,3));
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assertEquals("", ascii.substring(16) + utf.substring(16));
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assertEquals("bcdef\u03B4\u03B5\u03B6\u03B7\u03B8\u03B9",
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ascii.substring(1,6) + utf.substring(3,9));
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assertEquals("\u03B4\u03B5\u03B6\u03B7\u03B8\u03B9abcdefghijklmnop",
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utf.substring(3,9) + ascii);
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assertEquals("\u03B2\u03B3\u03B4\u03B5\u03B4\u03B5\u03B6\u03B7",
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utf.substring(5,1) + utf.substring(3,7));
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// Externalizing strings.
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var a = "123456789" + "qwertyuiopasdfghjklzxcvbnm";
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var b = "23456789qwertyuiopasdfghjklzxcvbn"
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assertEquals(a.slice(1,-1), b);
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assertTrue(isAsciiString(a));
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externalizeString(a, true);
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assertFalse(isAsciiString(a));
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assertEquals(a.slice(1,-1), b);
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assertTrue(/3456789qwe/.test(a));
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assertEquals(5, a.indexOf("678"));
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assertEquals("12345", a.split("6")[0]);
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