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Edit File: regexp-static.js
// Copyright 2008 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. // Test the (deprecated as of JS 1.5) properties of the RegExp function. var re = /((\d+)\.(\d+))/; var s = 'abc123.456def'; re.exec(s); assertEquals(s, RegExp.input); assertEquals('123.456', RegExp.lastMatch); assertEquals('456', RegExp.lastParen); assertEquals('abc', RegExp.leftContext); assertEquals('def', RegExp.rightContext); assertEquals(s, RegExp['$_']); assertEquals('123.456', RegExp['$&']); assertEquals('456', RegExp['$+']); assertEquals('abc', RegExp['$`']); assertEquals('def', RegExp["$'"]); assertEquals('123.456', RegExp['$1']); assertEquals('123', RegExp['$2']); assertEquals('456', RegExp['$3']); for (var i = 4; i < 10; ++i) { assertEquals('', RegExp['$' + i]); } // They should be read only. RegExp['$1'] = 'fisk'; assertEquals('123.456', RegExp['$1']); // String.prototype.match and String.prototype.replace (when given a // regexp) and also RegExp.prototype.test should all behave as if // RegExp.prototype.exec were called. s = 'ghi789.012jkl'; s.match(re); assertEquals(s, RegExp.input); assertEquals('789.012', RegExp.lastMatch); assertEquals('012', RegExp.lastParen); assertEquals('ghi', RegExp.leftContext); assertEquals('jkl', RegExp.rightContext); assertEquals(s, RegExp['$_']); assertEquals('789.012', RegExp['$&']); assertEquals('012', RegExp['$+']); assertEquals('ghi', RegExp['$`']); assertEquals('jkl', RegExp["$'"]); assertEquals('789.012', RegExp['$1']); assertEquals('789', RegExp['$2']); assertEquals('012', RegExp['$3']); for (var i = 4; i < 10; ++i) { assertEquals('', RegExp['$' + i]); } s = 'abc123.456def'; s.replace(re, 'whocares'); assertEquals(s, RegExp.input); assertEquals('123.456', RegExp.lastMatch); assertEquals('456', RegExp.lastParen); assertEquals('abc', RegExp.leftContext); assertEquals('def', RegExp.rightContext); assertEquals(s, RegExp['$_']); assertEquals('123.456', RegExp['$&']); assertEquals('456', RegExp['$+']); assertEquals('abc', RegExp['$`']); assertEquals('def', RegExp["$'"]); assertEquals('123.456', RegExp['$1']); assertEquals('123', RegExp['$2']); assertEquals('456', RegExp['$3']); for (var i = 4; i < 10; ++i) { assertEquals('', RegExp['$' + i]); } s = 'ghi789.012jkl'; re.test(s); assertEquals(s, RegExp.input); assertEquals('789.012', RegExp.lastMatch); assertEquals('012', RegExp.lastParen); assertEquals('ghi', RegExp.leftContext); assertEquals('jkl', RegExp.rightContext); assertEquals(s, RegExp['$_']); assertEquals('789.012', RegExp['$&']); assertEquals('012', RegExp['$+']); assertEquals('ghi', RegExp['$`']); assertEquals('jkl', RegExp["$'"]); assertEquals('789.012', RegExp['$1']); assertEquals('789', RegExp['$2']); assertEquals('012', RegExp['$3']); for (var i = 4; i < 10; ++i) { assertEquals('', RegExp['$' + i]); } // String.prototype.replace must interleave matching and replacing when a // global regexp is matched and replaced with the result of a function, in // case the function uses the static properties of the regexp constructor. re = /(.)/g; function f() { return RegExp.$1; }; assertEquals('abcd', 'abcd'.replace(re, f)); // lastParen where the last parenthesis didn't match. assertEquals(["foo",undefined], /foo(?:a(x))?/.exec("foobx"), "lastParen setup"); assertEquals("", RegExp.lastParen, "lastParen"); // The same test for $1 to $9. for (var i = 1; i <= 9; i++) { var haystack = "foo"; var re_text = "^foo"; for (var j = 0; j < i - 1; j++) { haystack += "x"; re_text += "(x)"; } re_text += "(?:a(x))?"; haystack += "bx"; var re = new RegExp(re_text); assertTrue(re.test(haystack), "$" + i + " setup"); for (var j = 1; j < i - 1; j++) { assertEquals("x", RegExp['$' + j], "$" + j + " in $" + i + " setup"); } assertEquals("", RegExp['$' + (i)], "$" + i); } RegExp.multiline = "foo"; assertTrue(typeof RegExp.multiline == typeof Boolean(), "RegExp.multiline coerces values to booleans"); RegExp.input = Number(); assertTrue(typeof RegExp.input == typeof String(), "RegExp.input coerces values to booleans"); // Ensure that we save the correct string as the last subject when // we do a match on a sliced string (the top one not the underlying). var foo = "lsdfj sldkfj sdklfj læsdfjl sdkfjlsdk fjsdl fjsdljskdj flsj flsdkj flskd regexp: /foobar/\nldkfj sdlkfj sdkl"; assertTrue(/^([a-z]+): (.*)/.test(foo.substring(foo.indexOf("regexp:"))), "regexp: setup"); assertEquals("regexp", RegExp.$1, "RegExp.$1"); // Check that calling with no argument is the same as calling with undefined. assertTrue(/^undefined$/.test()); assertEquals(["undefined"], /^undefined$/.exec());