v8/test/mjsunit/regexp-global.js
yangguo@chromium.org 85e3fba8a3 Remove unnecessary code for non-zero-length global regexps.
Also fixing a bug in the arm implementation.

BUG=
TEST=regexp-global.js

Review URL: https://chromiumcodereview.appspot.com/10383280

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11704 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-04 08:49:17 +00:00

142 lines
6.2 KiB
JavaScript

// Copyright 2012 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 that an optional capture is cleared between two matches.
var str = "ABX X";
str = str.replace(/(\w)?X/g, function(match, capture) {
assertTrue(match.indexOf(capture) >= 0 ||
capture === undefined);
return capture ? capture.toLowerCase() : "-";
});
assertEquals("Ab -", str);
// Test zero-length matches.
str = "Als Gregor Samsa eines Morgens";
str = str.replace(/\b/g, function(match, capture) {
return "/";
});
assertEquals("/Als/ /Gregor/ /Samsa/ /eines/ /Morgens/", str);
// Test zero-length matches that have non-zero-length sub-captures.
str = "It was a pleasure to burn.";
str = str.replace(/(?=(\w+))\b/g, function(match, capture) {
return capture.length;
});
assertEquals("2It 3was 1a 8pleasure 2to 4burn.", str);
// Test multiple captures.
str = "Try not. Do, or do not. There is no try.";
str = str.replace(/(not?)|(do)|(try)/gi,
function(match, c1, c2, c3) {
assertTrue((c1 === undefined && c2 === undefined) ||
(c2 === undefined && c3 === undefined) ||
(c1 === undefined && c3 === undefined));
if (c1) return "-";
if (c2) return "+";
if (c3) return "="
});
assertEquals("= -. +, or + -. There is - =.", str);
// Test multiple alternate captures.
str = "FOUR LEGS GOOD, TWO LEGS BAD!";
str = str.replace(/(FOUR|TWO) LEGS (GOOD|BAD)/g,
function(match, num_legs, likeability) {
assertTrue(num_legs !== undefined);
assertTrue(likeability !== undefined);
if (num_legs == "FOUR") assertTrue(likeability == "GOOD");
if (num_legs == "TWO") assertTrue(likeability == "BAD");
return match.length - 10;
});
assertEquals("4, 2!", str);
// The same tests with UC16.
//Test that an optional capture is cleared between two matches.
str = "AB\u1234 \u1234";
str = str.replace(/(\w)?\u1234/g,
function(match, capture) {
assertTrue(match.indexOf(capture) >= 0 ||
capture === undefined);
return capture ? capture.toLowerCase() : "-";
});
assertEquals("Ab -", str);
// Test zero-length matches.
str = "Als \u2623\u2642 eines Morgens";
str = str.replace(/\b/g, function(match, capture) {
return "/";
});
assertEquals("/Als/ \u2623\u2642 /eines/ /Morgens/", str);
// Test zero-length matches that have non-zero-length sub-captures.
str = "It was a pleasure to \u70e7.";
str = str.replace(/(?=(\w+))\b/g, function(match, capture) {
return capture.length;
});
assertEquals("2It 3was 1a 8pleasure 2to \u70e7.", str);
// Test multiple captures.
str = "Try not. D\u26aa, or d\u26aa not. There is no try.";
str = str.replace(/(not?)|(d\u26aa)|(try)/gi,
function(match, c1, c2, c3) {
assertTrue((c1 === undefined && c2 === undefined) ||
(c2 === undefined && c3 === undefined) ||
(c1 === undefined && c3 === undefined));
if (c1) return "-";
if (c2) return "+";
if (c3) return "="
});
assertEquals("= -. +, or + -. There is - =.", str);
// Test multiple alternate captures.
str = "FOUR \u817f GOOD, TWO \u817f BAD!";
str = str.replace(/(FOUR|TWO) \u817f (GOOD|BAD)/g,
function(match, num_legs, likeability) {
assertTrue(num_legs !== undefined);
assertTrue(likeability !== undefined);
if (num_legs == "FOUR") assertTrue(likeability == "GOOD");
if (num_legs == "TWO") assertTrue(likeability == "BAD");
return match.length - 7;
});
assertEquals("4, 2!", str);
// Test capture that is a real substring.
var str = "Beasts of England, beasts of Ireland";
str = str.replace(/(.*)/g, function(match) { return '~'; });
assertEquals("~~", str);
// Test zero-length matches that have non-zero-length sub-captures that do not
// start at the match start position.
str = "up up up up";
str = str.replace(/\b(?=u(p))/g, function(match, capture) {
return capture.length;
});
assertEquals("1up 1up 1up 1up", str);