| // 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); |