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// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. 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.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
description("This page tests toString conversion of RegExp objects, particularly wrt to '/' characters and RegExp.prototype.");
function testForwardSlash(pattern, _string)
{
string = _string;
re1 = new RegExp(pattern);
re2 = eval(re1.toString());
return re1.test(string) && re2.test(string);
}
function testLineTerminator(pattern)
{
re1 = new RegExp(pattern);
return /\n|\r|\u2028|\u2029/.test(re1.toString());
}
shouldBe("RegExp('/').source", '"\\\\/"');
shouldBe("RegExp('').source", '"(?:)"');
shouldBe("RegExp.prototype.source", '"(?:)"');
shouldBe("RegExp('/').toString()", '"/\\\\//"');
shouldBe("RegExp('').toString()", '"/(?:)/"');
shouldBe("RegExp.prototype.toString()", '"/(?:)/"');
// These strings are equivalent, since the '\' is identity escaping the '/' at the string level.
shouldBeTrue('testForwardSlash("^/$", "/");');
shouldBeTrue('testForwardSlash("^\/$", "/");');
// This string passes "^\/$" to the RegExp, so the '/' is escaped in the re!
shouldBeTrue('testForwardSlash("^\\/$", "/");');
// These strings pass "^\\/$" and "^\\\/$" respectively to the RegExp, giving one '\' to match.
shouldBeTrue('testForwardSlash("^\\\\/$", "\\/");');
shouldBeTrue('testForwardSlash("^\\\\\\/$", "\\/");');
// These strings match two backslashes (the second with the '/' escaped).
shouldBeTrue('testForwardSlash("^\\\\\\\\/$", "\\\\/");');
shouldBeTrue('testForwardSlash("^\\\\\\\\\\/$", "\\\\/");');
// Test that nothing goes wrongif there are multiple forward slashes!
shouldBeTrue('testForwardSlash("x/x/x", "x\\/x\\/x");');
shouldBeTrue('testForwardSlash("x\\/x/x", "x\\/x\\/x");');
shouldBeTrue('testForwardSlash("x/x\\/x", "x\\/x\\/x");');
shouldBeTrue('testForwardSlash("x\\/x\\/x", "x\\/x\\/x");');
shouldBeFalse('testLineTerminator("\\n");');
shouldBeFalse('testLineTerminator("\\\\n");');
shouldBeFalse('testLineTerminator("\\r");');
shouldBeFalse('testLineTerminator("\\\\r");');
shouldBeFalse('testLineTerminator("\\u2028");');
shouldBeFalse('testLineTerminator("\\\\u2028");');
shouldBeFalse('testLineTerminator("\\u2029");');
shouldBeFalse('testLineTerminator("\\\\u2029");');
shouldBe("RegExp('[/]').source", "'[/]'");
shouldBe("RegExp('\\\\[/]').source", "'\\\\[\\\\/]'");
// See 15.10.6.4
// The first half of this checks that:
// Return the String value formed by concatenating the Strings "/", the
// String value of the source property of this RegExp object, and "/";
// The second half checks that:
// The returned String has the form of a RegularExpressionLiteral that
// evaluates to another RegExp object with the same behaviour as this object.
shouldBe("var o = new RegExp(); o.toString() === '/'+o.source+'/' && eval(o.toString()+'.exec(String())')", '[""]');