v8/test/mjsunit/string-replace.js

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// Copyright 2009 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.
/**
* @fileoverview Test String.prototype.replace
*/
function replaceTest(result, subject, pattern, replacement) {
var name =
"\"" + subject + "\".replace(" + pattern + ", " + replacement + ")";
assertEquals(result, subject.replace(pattern, replacement), name);
}
var short = "xaxbxcx";
replaceTest("axbxcx", short, "x", "");
replaceTest("axbxcx", short, /x/, "");
replaceTest("abc", short, /x/g, "");
replaceTest("xaxxcx", short, "b", "");
replaceTest("xaxxcx", short, /b/, "");
replaceTest("xaxxcx", short, /b/g, "");
replaceTest("[]axbxcx", short, "x", "[]");
replaceTest("[]axbxcx", short, /x/, "[]");
replaceTest("[]a[]b[]c[]", short, /x/g, "[]");
replaceTest("xax[]xcx", short, "b", "[]");
replaceTest("xax[]xcx", short, /b/, "[]");
replaceTest("xax[]xcx", short, /b/g, "[]");
replaceTest("[$]axbxcx", short, "x", "[$$]");
replaceTest("[$]axbxcx", short, /x/, "[$$]");
replaceTest("[$]a[$]b[$]c[$]", short, /x/g, "[$$]");
replaceTest("xax[$]xcx", short, "b", "[$$]");
replaceTest("xax[$]xcx", short, /b/, "[$$]");
replaceTest("xax[$]xcx", short, /b/g, "[$$]");
replaceTest("[]axbxcx", short, "x", "[$`]");
replaceTest("[]axbxcx", short, /x/, "[$`]");
replaceTest("[]a[xa]b[xaxb]c[xaxbxc]", short, /x/g, "[$`]");
replaceTest("xax[xax]xcx", short, "b", "[$`]");
replaceTest("xax[xax]xcx", short, /b/, "[$`]");
replaceTest("xax[xax]xcx", short, /b/g, "[$`]");
replaceTest("[x]axbxcx", short, "x", "[$&]");
replaceTest("[x]axbxcx", short, /x/, "[$&]");
replaceTest("[x]a[x]b[x]c[x]", short, /x/g, "[$&]");
replaceTest("xax[b]xcx", short, "b", "[$&]");
replaceTest("xax[b]xcx", short, /b/, "[$&]");
replaceTest("xax[b]xcx", short, /b/g, "[$&]");
replaceTest("[axbxcx]axbxcx", short, "x", "[$']");
replaceTest("[axbxcx]axbxcx", short, /x/, "[$']");
replaceTest("[axbxcx]a[bxcx]b[cx]c[]", short, /x/g, "[$']");
replaceTest("xax[xcx]xcx", short, "b", "[$']");
replaceTest("xax[xcx]xcx", short, /b/, "[$']");
replaceTest("xax[xcx]xcx", short, /b/g, "[$']");
replaceTest("[$1]axbxcx", short, "x", "[$1]");
replaceTest("[$1]axbxcx", short, /x/, "[$1]");
replaceTest("[]axbxcx", short, /x()/, "[$1]");
replaceTest("[$1]a[$1]b[$1]c[$1]", short, /x/g, "[$1]");
replaceTest("[]a[]b[]c[]", short, /x()/g, "[$1]");
replaceTest("xax[$1]xcx", short, "b", "[$1]");
replaceTest("xax[$1]xcx", short, /b/, "[$1]");
replaceTest("xax[]xcx", short, /b()/, "[$1]");
replaceTest("xax[$1]xcx", short, /b/g, "[$1]");
replaceTest("xax[]xcx", short, /b()/g, "[$1]");
// Bug 317 look-alikes. If "$e" has no meaning, the "$" must be retained.
replaceTest("xax$excx", short, "b", "$e");
replaceTest("xax$excx", short, /b/, "$e");
replaceTest("xax$excx", short, /b/g, "$e");
replaceTest("xaxe$xcx", short, "b", "e$");
replaceTest("xaxe$xcx", short, /b/, "e$");
replaceTest("xaxe$xcx", short, /b/g, "e$");
replaceTest("[$$$1$$a1abb1bb0$002$3$03][$$$1$$b1bcc1cc0$002$3$03]c",
"abc", /(.)(?=(.))/g, "[$$$$$$1$$$$$11$01$2$21$02$020$002$3$03]");
// Replace with functions.
var ctr = 0;
replaceTest("0axbxcx", short, "x", function r(m, i, s) {
assertEquals(3, arguments.length, "replace('x',func) func-args");
assertEquals("x", m, "replace('x',func(m,..))");
assertEquals(0, i, "replace('x',func(..,i,..))");
assertEquals(short, s, "replace('x',func(..,s))");
return String(ctr++);
});
assertEquals(1, ctr, "replace('x',func) num-match");
ctr = 0;
replaceTest("0axbxcx", short, /x/, function r(m, i, s) {
assertEquals(3, arguments.length, "replace(/x/,func) func-args");
assertEquals("x", m, "replace(/x/,func(m,..))");
assertEquals(0, i, "replace(/x/,func(..,i,..))");
assertEquals(short, s, "replace(/x/,func(..,s))");
return String(ctr++);
});
assertEquals(1, ctr, "replace(/x/,func) num-match");
ctr = 0;
replaceTest("0a1b2c3", short, /x/g, function r(m, i, s) {
assertEquals(3, arguments.length, "replace(/x/g,func) func-args");
assertEquals("x", m, "replace(/x/g,func(m,..))");
assertEquals(ctr * 2, i, "replace(/x/g,func(..,i,.))");
assertEquals(short, s, "replace(/x/g,func(..,s))");
return String(ctr++);
});
assertEquals(4, ctr, "replace(/x/g,func) num-match");
ctr = 0;
replaceTest("0a1b2cx", short, /(x)(?=(.))/g, function r(m, c1, c2, i, s) {
assertEquals(5, arguments.length, "replace(/(x)(?=(.))/g,func) func-args");
assertEquals("x", m, "replace(/(x)(?=(.))/g,func(m,..))");
assertEquals("x", c1, "replace(/(x)(?=(.))/g,func(..,c1,..))");
assertEquals(["a","b","c"][ctr], c2, "replace(/(x)(?=(.))/g,func(..,c2,..))");
assertEquals(ctr * 2, i, "replace(/(x)(?=(.))/g,func(..,i,..))");
assertEquals(short, s, "replace(/(x)(?=(.))/g,func(..,s))");
return String(ctr++);
});
assertEquals(3, ctr, "replace(/x/g,func) num-match");
// Test special cases of replacement parts longer than 1<<11.
var longstring = "xyzzy";
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
longstring = longstring + longstring;
// longstring.length == 5 << 11
replaceTest(longstring + longstring,
"<" + longstring + ">", /<(.*)>/g, "$1$1");
replaceTest("string 42", "string x", /x/g, function() { return 42; });
replaceTest("string 42", "string x", /x/, function() { return 42; });
replaceTest("string 42", "string x", /[xy]/g, function() { return 42; });
replaceTest("string 42", "string x", /[xy]/, function() { return 42; });
replaceTest("string true", "string x", /x/g, function() { return true; });
replaceTest("string null", "string x", /x/g, function() { return null; });
replaceTest("string undefined", "string x", /x/g, function() { return undefined; });
replaceTest("aundefinedbundefinedcundefined",
"abc", /(.)|(.)/g, function(m, m1, m2, i, s) { return m1+m2; });
// Test nested calls to replace, including that it sets RegExp.$& correctly.
function replacer(m,i,s) {
assertEquals(m,RegExp['$&']);
return "[" + RegExp['$&'] + "-"
+ m.replace(/./g,"$&$&") + "-"
+ m.replace(/./g,function() { return RegExp['$&']; })
+ "-" + RegExp['$&'] + "]";
}
replaceTest("[ab-aabb-ab-b][az-aazz-az-z]",
"abaz", /a./g, replacer);
replaceTest("[ab-aabb-ab-b][az-aazz-az-z]",
"abaz", /a(.)/g, replacer);
var str = 'She sells seashells by the seashore.';
var re = /sh/g;
assertEquals('She sells sea$schells by the sea$schore.',
str.replace(re,"$$" + 'sch'))
var replace_obj = { length: 0, toString: function() { return "x"; }};
assertEquals("axc", "abc".replace(/b/, replace_obj));
assertEquals("axc", "abc".replace(/b/g, replace_obj));
var search_obj = { length: 1, toString: function() { return "b"; }};
assertEquals("axc", "abc".replace(search_obj, function() { return "x"; }));
var side_effect_flag = false;
var replace_obj_side_effects = {
toString: function() { side_effect_flag = true; return "x" }
}
assertEquals("abc", "abc".replace(/z/g, replace_obj_side_effects));
assertTrue(side_effect_flag); // Side effect triggers even without a match.
var regexp99pattern = "";
var subject = "";
for (var i = 0; i < 99; i++) {
regexp99pattern += "(.)";
subject += String.fromCharCode(i + 24);
}
function testIndices99(re) {
// Test $1 .. $99
for (var i = 1; i < 100; i++) {
assertEquals(String.fromCharCode(i + 23),
subject.replace(re, "$" + i));
}
// Test $01 .. $09
for (var i = 1; i < 10; i++) {
assertEquals(String.fromCharCode(i + 23),
subject.replace(re, "$0" + i));
}
assertEquals("$0", subject.replace(re, "$0"));
assertEquals("$00", subject.replace(re, "$00"));
assertEquals(String.fromCharCode(10 + 23) + "0",
subject.replace(re, "$100"));
}
testIndices99(new RegExp(regexp99pattern));
testIndices99(new RegExp(regexp99pattern, "g"));
var regexp59pattern = "";
for (var i = 0; i < 59; i++) regexp59pattern += "(.)";
function testIndices59(re) {
// Test $60 .. $99. Captures reach up to 59. Per spec, how to deal
// with this is implementation-dependent. We interpret $60 as $6
// followed by "0", $61 as $6, followed by "1" and so on.
var tail = subject.substr(59);
for (var i = 60; i < 100; i++) {
assertEquals(String.fromCharCode(i / 10 + 23) + (i % 10) + tail,
subject.replace(re, "$" + i));
}
}
testIndices59(new RegExp(regexp59pattern));
testIndices59(new RegExp(regexp59pattern, "g"));