Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1 | // Copyright 2006-2009 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | |
| 29 | // This file relies on the fact that the following declaration has been made |
| 30 | // in runtime.js: |
| 31 | // const $String = global.String; |
| 32 | // const $NaN = 0/0; |
| 33 | |
| 34 | |
| 35 | // Set the String function and constructor. |
| 36 | %SetCode($String, function(x) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 37 | var value = %_ArgumentsLength() == 0 ? '' : TO_STRING_INLINE(x); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 38 | if (%_IsConstructCall()) { |
| 39 | %_SetValueOf(this, value); |
| 40 | } else { |
| 41 | return value; |
| 42 | } |
| 43 | }); |
| 44 | |
| 45 | %FunctionSetPrototype($String, new $String()); |
| 46 | |
| 47 | // ECMA-262 section 15.5.4.2 |
| 48 | function StringToString() { |
| 49 | if (!IS_STRING(this) && !IS_STRING_WRAPPER(this)) |
| 50 | throw new $TypeError('String.prototype.toString is not generic'); |
| 51 | return %_ValueOf(this); |
| 52 | } |
| 53 | |
| 54 | |
| 55 | // ECMA-262 section 15.5.4.3 |
| 56 | function StringValueOf() { |
| 57 | if (!IS_STRING(this) && !IS_STRING_WRAPPER(this)) |
| 58 | throw new $TypeError('String.prototype.valueOf is not generic'); |
| 59 | return %_ValueOf(this); |
| 60 | } |
| 61 | |
| 62 | |
| 63 | // ECMA-262, section 15.5.4.4 |
| 64 | function StringCharAt(pos) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 65 | var result = %_StringCharAt(this, pos); |
| 66 | if (%_IsSmi(result)) { |
| 67 | result = %_StringCharAt(TO_STRING_INLINE(this), TO_INTEGER(pos)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 68 | } |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 69 | return result; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | |
| 73 | // ECMA-262 section 15.5.4.5 |
| 74 | function StringCharCodeAt(pos) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 75 | var result = %_StringCharCodeAt(this, pos); |
| 76 | if (!%_IsSmi(result)) { |
| 77 | result = %_StringCharCodeAt(TO_STRING_INLINE(this), TO_INTEGER(pos)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 78 | } |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 79 | return result; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | |
| 83 | // ECMA-262, section 15.5.4.6 |
| 84 | function StringConcat() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 85 | var len = %_ArgumentsLength(); |
| 86 | var this_as_string = TO_STRING_INLINE(this); |
| 87 | if (len === 1) { |
| 88 | return this_as_string + %_Arguments(0); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 89 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame^] | 90 | var parts = new InternalArray(len + 1); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 91 | parts[0] = this_as_string; |
| 92 | for (var i = 0; i < len; i++) { |
| 93 | var part = %_Arguments(i); |
| 94 | parts[i + 1] = TO_STRING_INLINE(part); |
| 95 | } |
| 96 | return %StringBuilderConcat(parts, len + 1, ""); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | // Match ES3 and Safari |
| 100 | %FunctionSetLength(StringConcat, 1); |
| 101 | |
| 102 | |
| 103 | // ECMA-262 section 15.5.4.7 |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 104 | function StringIndexOf(pattern /* position */) { // length == 1 |
| 105 | var subject = TO_STRING_INLINE(this); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 106 | pattern = TO_STRING_INLINE(pattern); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 107 | var index = 0; |
| 108 | if (%_ArgumentsLength() > 1) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 109 | index = %_Arguments(1); // position |
| 110 | index = TO_INTEGER(index); |
| 111 | if (index < 0) index = 0; |
| 112 | if (index > subject.length) index = subject.length; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 113 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 114 | return %StringIndexOf(subject, pattern, index); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | |
| 118 | // ECMA-262 section 15.5.4.8 |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 119 | function StringLastIndexOf(pat /* position */) { // length == 1 |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 120 | var sub = TO_STRING_INLINE(this); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 121 | var subLength = sub.length; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 122 | var pat = TO_STRING_INLINE(pat); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 123 | var patLength = pat.length; |
| 124 | var index = subLength - patLength; |
| 125 | if (%_ArgumentsLength() > 1) { |
| 126 | var position = ToNumber(%_Arguments(1)); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 127 | if (!NUMBER_IS_NAN(position)) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 128 | position = TO_INTEGER(position); |
| 129 | if (position < 0) { |
| 130 | position = 0; |
| 131 | } |
| 132 | if (position + patLength < subLength) { |
| 133 | index = position |
| 134 | } |
| 135 | } |
| 136 | } |
| 137 | if (index < 0) { |
| 138 | return -1; |
| 139 | } |
| 140 | return %StringLastIndexOf(sub, pat, index); |
| 141 | } |
| 142 | |
| 143 | |
| 144 | // ECMA-262 section 15.5.4.9 |
| 145 | // |
| 146 | // This function is implementation specific. For now, we do not |
| 147 | // do anything locale specific. |
| 148 | function StringLocaleCompare(other) { |
| 149 | if (%_ArgumentsLength() === 0) return 0; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 150 | return %StringLocaleCompare(TO_STRING_INLINE(this), |
| 151 | TO_STRING_INLINE(other)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | |
| 155 | // ECMA-262 section 15.5.4.10 |
| 156 | function StringMatch(regexp) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 157 | var subject = TO_STRING_INLINE(this); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 158 | if (IS_REGEXP(regexp)) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 159 | if (!regexp.global) return RegExpExecNoTests(regexp, subject, 0); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 160 | %_Log('regexp', 'regexp-match,%0S,%1r', [subject, regexp]); |
| 161 | // lastMatchInfo is defined in regexp.js. |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 162 | return %StringMatch(subject, regexp, lastMatchInfo); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 163 | } |
| 164 | // Non-regexp argument. |
| 165 | regexp = new $RegExp(regexp); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 166 | return RegExpExecNoTests(regexp, subject, 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | |
| 170 | // SubString is an internal function that returns the sub string of 'string'. |
| 171 | // If resulting string is of length 1, we use the one character cache |
| 172 | // otherwise we call the runtime system. |
| 173 | function SubString(string, start, end) { |
| 174 | // Use the one character string cache. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 175 | if (start + 1 == end) return %_StringCharAt(string, start); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 176 | return %_SubString(string, start, end); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | |
| 180 | // This has the same size as the lastMatchInfo array, and can be used for |
| 181 | // functions that expect that structure to be returned. It is used when the |
| 182 | // needle is a string rather than a regexp. In this case we can't update |
| 183 | // lastMatchArray without erroneously affecting the properties on the global |
| 184 | // RegExp object. |
| 185 | var reusableMatchInfo = [2, "", "", -1, -1]; |
| 186 | |
| 187 | |
| 188 | // ECMA-262, section 15.5.4.11 |
| 189 | function StringReplace(search, replace) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 190 | var subject = TO_STRING_INLINE(this); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 191 | |
| 192 | // Delegate to one of the regular expression variants if necessary. |
| 193 | if (IS_REGEXP(search)) { |
| 194 | %_Log('regexp', 'regexp-replace,%0r,%1S', [search, subject]); |
| 195 | if (IS_FUNCTION(replace)) { |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 196 | if (search.global) { |
| 197 | return StringReplaceGlobalRegExpWithFunction(subject, search, replace); |
| 198 | } else { |
| 199 | return StringReplaceNonGlobalRegExpWithFunction(subject, |
| 200 | search, |
| 201 | replace); |
| 202 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 203 | } else { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 204 | return %StringReplaceRegExpWithString(subject, |
| 205 | search, |
| 206 | TO_STRING_INLINE(replace), |
| 207 | lastMatchInfo); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 208 | } |
| 209 | } |
| 210 | |
| 211 | // Convert the search argument to a string and search for it. |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 212 | search = TO_STRING_INLINE(search); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 213 | var start = %StringIndexOf(subject, search, 0); |
| 214 | if (start < 0) return subject; |
| 215 | var end = start + search.length; |
| 216 | |
| 217 | var builder = new ReplaceResultBuilder(subject); |
| 218 | // prefix |
| 219 | builder.addSpecialSlice(0, start); |
| 220 | |
| 221 | // Compute the string to replace with. |
| 222 | if (IS_FUNCTION(replace)) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 223 | builder.add(%_CallFunction(%GetGlobalReceiver(), |
| 224 | search, |
| 225 | start, |
| 226 | subject, |
| 227 | replace)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 228 | } else { |
| 229 | reusableMatchInfo[CAPTURE0] = start; |
| 230 | reusableMatchInfo[CAPTURE1] = end; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 231 | replace = TO_STRING_INLINE(replace); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 232 | ExpandReplacement(replace, subject, reusableMatchInfo, builder); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | // suffix |
| 236 | builder.addSpecialSlice(end, subject.length); |
| 237 | |
| 238 | return builder.generate(); |
| 239 | } |
| 240 | |
| 241 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 242 | // Expand the $-expressions in the string and return a new string with |
| 243 | // the result. |
| 244 | function ExpandReplacement(string, subject, matchInfo, builder) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 245 | var length = string.length; |
| 246 | var builder_elements = builder.elements; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 247 | var next = %StringIndexOf(string, '$', 0); |
| 248 | if (next < 0) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 249 | if (length > 0) builder_elements.push(string); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 250 | return; |
| 251 | } |
| 252 | |
| 253 | // Compute the number of captures; see ECMA-262, 15.5.4.11, p. 102. |
| 254 | var m = NUMBER_OF_CAPTURES(matchInfo) >> 1; // Includes the match. |
| 255 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 256 | if (next > 0) builder_elements.push(SubString(string, 0, next)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 257 | |
| 258 | while (true) { |
| 259 | var expansion = '$'; |
| 260 | var position = next + 1; |
| 261 | if (position < length) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 262 | var peek = %_StringCharCodeAt(string, position); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 263 | if (peek == 36) { // $$ |
| 264 | ++position; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 265 | builder_elements.push('$'); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 266 | } else if (peek == 38) { // $& - match |
| 267 | ++position; |
| 268 | builder.addSpecialSlice(matchInfo[CAPTURE0], |
| 269 | matchInfo[CAPTURE1]); |
| 270 | } else if (peek == 96) { // $` - prefix |
| 271 | ++position; |
| 272 | builder.addSpecialSlice(0, matchInfo[CAPTURE0]); |
| 273 | } else if (peek == 39) { // $' - suffix |
| 274 | ++position; |
| 275 | builder.addSpecialSlice(matchInfo[CAPTURE1], subject.length); |
| 276 | } else if (peek >= 48 && peek <= 57) { // $n, 0 <= n <= 9 |
| 277 | ++position; |
| 278 | var n = peek - 48; |
| 279 | if (position < length) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 280 | peek = %_StringCharCodeAt(string, position); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 281 | // $nn, 01 <= nn <= 99 |
| 282 | if (n != 0 && peek == 48 || peek >= 49 && peek <= 57) { |
| 283 | var nn = n * 10 + (peek - 48); |
| 284 | if (nn < m) { |
| 285 | // If the two digit capture reference is within range of |
| 286 | // the captures, we use it instead of the single digit |
| 287 | // one. Otherwise, we fall back to using the single |
| 288 | // digit reference. This matches the behavior of |
| 289 | // SpiderMonkey. |
| 290 | ++position; |
| 291 | n = nn; |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | if (0 < n && n < m) { |
| 296 | addCaptureString(builder, matchInfo, n); |
| 297 | } else { |
| 298 | // Because of the captures range check in the parsing of two |
| 299 | // digit capture references, we can only enter here when a |
| 300 | // single digit capture reference is outside the range of |
| 301 | // captures. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 302 | builder_elements.push('$'); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 303 | --position; |
| 304 | } |
| 305 | } else { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 306 | builder_elements.push('$'); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 307 | } |
| 308 | } else { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 309 | builder_elements.push('$'); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 310 | } |
| 311 | |
| 312 | // Go the the next $ in the string. |
| 313 | next = %StringIndexOf(string, '$', position); |
| 314 | |
| 315 | // Return if there are no more $ characters in the string. If we |
| 316 | // haven't reached the end, we need to append the suffix. |
| 317 | if (next < 0) { |
| 318 | if (position < length) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 319 | builder_elements.push(SubString(string, position, length)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 320 | } |
| 321 | return; |
| 322 | } |
| 323 | |
| 324 | // Append substring between the previous and the next $ character. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 325 | if (next > position) { |
| 326 | builder_elements.push(SubString(string, position, next)); |
| 327 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 328 | } |
| 329 | }; |
| 330 | |
| 331 | |
| 332 | // Compute the string of a given regular expression capture. |
| 333 | function CaptureString(string, lastCaptureInfo, index) { |
| 334 | // Scale the index. |
| 335 | var scaled = index << 1; |
| 336 | // Compute start and end. |
| 337 | var start = lastCaptureInfo[CAPTURE(scaled)]; |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 338 | // If start isn't valid, return undefined. |
| 339 | if (start < 0) return; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 340 | var end = lastCaptureInfo[CAPTURE(scaled + 1)]; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 341 | return SubString(string, start, end); |
| 342 | }; |
| 343 | |
| 344 | |
| 345 | // Add the string of a given regular expression capture to the |
| 346 | // ReplaceResultBuilder |
| 347 | function addCaptureString(builder, matchInfo, index) { |
| 348 | // Scale the index. |
| 349 | var scaled = index << 1; |
| 350 | // Compute start and end. |
| 351 | var start = matchInfo[CAPTURE(scaled)]; |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 352 | if (start < 0) return; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 353 | var end = matchInfo[CAPTURE(scaled + 1)]; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 354 | builder.addSpecialSlice(start, end); |
| 355 | }; |
| 356 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 357 | // TODO(lrn): This array will survive indefinitely if replace is never |
| 358 | // called again. However, it will be empty, since the contents are cleared |
| 359 | // in the finally block. |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame^] | 360 | var reusableReplaceArray = new InternalArray(16); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 361 | |
| 362 | // Helper function for replacing regular expressions with the result of a |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 363 | // function application in String.prototype.replace. |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 364 | function StringReplaceGlobalRegExpWithFunction(subject, regexp, replace) { |
| 365 | var resultArray = reusableReplaceArray; |
| 366 | if (resultArray) { |
| 367 | reusableReplaceArray = null; |
| 368 | } else { |
| 369 | // Inside a nested replace (replace called from the replacement function |
| 370 | // of another replace) or we have failed to set the reusable array |
| 371 | // back due to an exception in a replacement function. Create a new |
| 372 | // array to use in the future, or until the original is written back. |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame^] | 373 | resultArray = new InternalArray(16); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 374 | } |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 375 | var res = %RegExpExecMultiple(regexp, |
| 376 | subject, |
| 377 | lastMatchInfo, |
| 378 | resultArray); |
| 379 | regexp.lastIndex = 0; |
| 380 | if (IS_NULL(res)) { |
| 381 | // No matches at all. |
| 382 | reusableReplaceArray = resultArray; |
| 383 | return subject; |
| 384 | } |
| 385 | var len = res.length; |
| 386 | var i = 0; |
| 387 | if (NUMBER_OF_CAPTURES(lastMatchInfo) == 2) { |
| 388 | var match_start = 0; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame^] | 389 | var override = new InternalArray(null, 0, subject); |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 390 | var receiver = %GetGlobalReceiver(); |
| 391 | while (i < len) { |
| 392 | var elem = res[i]; |
| 393 | if (%_IsSmi(elem)) { |
| 394 | if (elem > 0) { |
| 395 | match_start = (elem >> 11) + (elem & 0x7ff); |
| 396 | } else { |
| 397 | match_start = res[++i] - elem; |
| 398 | } |
| 399 | } else { |
| 400 | override[0] = elem; |
| 401 | override[1] = match_start; |
| 402 | lastMatchInfoOverride = override; |
| 403 | var func_result = |
| 404 | %_CallFunction(receiver, elem, match_start, subject, replace); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 405 | res[i] = TO_STRING_INLINE(func_result); |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 406 | match_start += elem.length; |
| 407 | } |
| 408 | i++; |
| 409 | } |
| 410 | } else { |
| 411 | while (i < len) { |
| 412 | var elem = res[i]; |
| 413 | if (!%_IsSmi(elem)) { |
| 414 | // elem must be an Array. |
| 415 | // Use the apply argument as backing for global RegExp properties. |
| 416 | lastMatchInfoOverride = elem; |
| 417 | var func_result = replace.apply(null, elem); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 418 | res[i] = TO_STRING_INLINE(func_result); |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 419 | } |
| 420 | i++; |
| 421 | } |
| 422 | } |
| 423 | var resultBuilder = new ReplaceResultBuilder(subject, res); |
| 424 | var result = resultBuilder.generate(); |
| 425 | resultArray.length = 0; |
| 426 | reusableReplaceArray = resultArray; |
| 427 | return result; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 428 | } |
| 429 | |
| 430 | |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 431 | function StringReplaceNonGlobalRegExpWithFunction(subject, regexp, replace) { |
| 432 | var matchInfo = DoRegExpExec(regexp, subject, 0); |
| 433 | if (IS_NULL(matchInfo)) return subject; |
| 434 | var result = new ReplaceResultBuilder(subject); |
| 435 | var index = matchInfo[CAPTURE0]; |
| 436 | result.addSpecialSlice(0, index); |
| 437 | var endOfMatch = matchInfo[CAPTURE1]; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 438 | // Compute the parameter list consisting of the match, captures, index, |
| 439 | // and subject for the replace function invocation. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 440 | // The number of captures plus one for the match. |
| 441 | var m = NUMBER_OF_CAPTURES(matchInfo) >> 1; |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 442 | var replacement; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 443 | if (m == 1) { |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 444 | // No captures, only the match, which is always valid. |
| 445 | var s = SubString(subject, index, endOfMatch); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 446 | // Don't call directly to avoid exposing the built-in global object. |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 447 | replacement = |
| 448 | %_CallFunction(%GetGlobalReceiver(), s, index, subject, replace); |
| 449 | } else { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame^] | 450 | var parameters = new InternalArray(m + 2); |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 451 | for (var j = 0; j < m; j++) { |
| 452 | parameters[j] = CaptureString(subject, matchInfo, j); |
| 453 | } |
| 454 | parameters[j] = index; |
| 455 | parameters[j + 1] = subject; |
| 456 | |
| 457 | replacement = replace.apply(null, parameters); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 458 | } |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 459 | |
| 460 | result.add(replacement); // The add method converts to string if necessary. |
| 461 | // Can't use matchInfo any more from here, since the function could |
| 462 | // overwrite it. |
| 463 | result.addSpecialSlice(endOfMatch, subject.length); |
| 464 | return result.generate(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 465 | } |
| 466 | |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 467 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 468 | // ECMA-262 section 15.5.4.12 |
| 469 | function StringSearch(re) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 470 | var regexp; |
| 471 | if (IS_STRING(re)) { |
| 472 | regexp = %_GetFromCache(STRING_TO_REGEXP_CACHE_ID, re); |
| 473 | } else if (IS_REGEXP(re)) { |
| 474 | regexp = re; |
| 475 | } else { |
| 476 | regexp = new $RegExp(re); |
| 477 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 478 | var match = DoRegExpExec(regexp, TO_STRING_INLINE(this), 0); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 479 | if (match) { |
| 480 | return match[CAPTURE0]; |
| 481 | } |
| 482 | return -1; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | |
| 486 | // ECMA-262 section 15.5.4.13 |
| 487 | function StringSlice(start, end) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 488 | var s = TO_STRING_INLINE(this); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 489 | var s_len = s.length; |
| 490 | var start_i = TO_INTEGER(start); |
| 491 | var end_i = s_len; |
| 492 | if (end !== void 0) |
| 493 | end_i = TO_INTEGER(end); |
| 494 | |
| 495 | if (start_i < 0) { |
| 496 | start_i += s_len; |
| 497 | if (start_i < 0) |
| 498 | start_i = 0; |
| 499 | } else { |
| 500 | if (start_i > s_len) |
| 501 | start_i = s_len; |
| 502 | } |
| 503 | |
| 504 | if (end_i < 0) { |
| 505 | end_i += s_len; |
| 506 | if (end_i < 0) |
| 507 | end_i = 0; |
| 508 | } else { |
| 509 | if (end_i > s_len) |
| 510 | end_i = s_len; |
| 511 | } |
| 512 | |
| 513 | var num_c = end_i - start_i; |
| 514 | if (num_c < 0) |
| 515 | num_c = 0; |
| 516 | |
| 517 | return SubString(s, start_i, start_i + num_c); |
| 518 | } |
| 519 | |
| 520 | |
| 521 | // ECMA-262 section 15.5.4.14 |
| 522 | function StringSplit(separator, limit) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 523 | var subject = TO_STRING_INLINE(this); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 524 | limit = (IS_UNDEFINED(limit)) ? 0xffffffff : TO_UINT32(limit); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 525 | if (limit === 0) return []; |
| 526 | |
| 527 | // ECMA-262 says that if separator is undefined, the result should |
| 528 | // be an array of size 1 containing the entire string. SpiderMonkey |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 529 | // and KJS have this behavior only when no separator is given. If |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 530 | // undefined is explicitly given, they convert it to a string and |
| 531 | // use that. We do as SpiderMonkey and KJS. |
| 532 | if (%_ArgumentsLength() === 0) { |
| 533 | return [subject]; |
| 534 | } |
| 535 | |
| 536 | var length = subject.length; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 537 | if (!IS_REGEXP(separator)) { |
| 538 | separator = TO_STRING_INLINE(separator); |
| 539 | var separator_length = separator.length; |
| 540 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 541 | // If the separator string is empty then return the elements in the subject. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 542 | if (separator_length === 0) return %StringToArray(subject, limit); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 543 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 544 | var result = %StringSplit(subject, separator, limit); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 545 | |
| 546 | return result; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 547 | } |
| 548 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 549 | %_Log('regexp', 'regexp-split,%0S,%1r', [subject, separator]); |
| 550 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 551 | if (length === 0) { |
Teng-Hui Zhu | 3e5fa29 | 2010-11-09 16:16:48 -0800 | [diff] [blame] | 552 | if (DoRegExpExec(separator, subject, 0, 0) != null) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 553 | return []; |
| 554 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 555 | return [subject]; |
| 556 | } |
| 557 | |
| 558 | var currentIndex = 0; |
| 559 | var startIndex = 0; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 560 | var startMatch = 0; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 561 | var result = []; |
| 562 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 563 | outer_loop: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 564 | while (true) { |
| 565 | |
| 566 | if (startIndex === length) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 567 | result.push(SubString(subject, currentIndex, length)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 568 | break; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 569 | } |
| 570 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 571 | var matchInfo = DoRegExpExec(separator, subject, startIndex); |
| 572 | if (matchInfo == null || length === (startMatch = matchInfo[CAPTURE0])) { |
| 573 | result.push(SubString(subject, currentIndex, length)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 574 | break; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 575 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 576 | var endIndex = matchInfo[CAPTURE1]; |
| 577 | |
| 578 | // We ignore a zero-length match at the currentIndex. |
| 579 | if (startIndex === endIndex && endIndex === currentIndex) { |
| 580 | startIndex++; |
| 581 | continue; |
| 582 | } |
| 583 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 584 | if (currentIndex + 1 == startMatch) { |
| 585 | result.push(%_StringCharAt(subject, currentIndex)); |
| 586 | } else { |
| 587 | result.push(%_SubString(subject, currentIndex, startMatch)); |
| 588 | } |
| 589 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 590 | if (result.length === limit) break; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 591 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 592 | var matchinfo_len = NUMBER_OF_CAPTURES(matchInfo) + REGEXP_FIRST_CAPTURE; |
| 593 | for (var i = REGEXP_FIRST_CAPTURE + 2; i < matchinfo_len; ) { |
| 594 | var start = matchInfo[i++]; |
| 595 | var end = matchInfo[i++]; |
| 596 | if (end != -1) { |
| 597 | if (start + 1 == end) { |
| 598 | result.push(%_StringCharAt(subject, start)); |
| 599 | } else { |
| 600 | result.push(%_SubString(subject, start, end)); |
| 601 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 602 | } else { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 603 | result.push(void 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 604 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 605 | if (result.length === limit) break outer_loop; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 606 | } |
| 607 | |
| 608 | startIndex = currentIndex = endIndex; |
| 609 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 610 | return result; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 614 | // ECMA-262 section 15.5.4.15 |
| 615 | function StringSubstring(start, end) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 616 | var s = TO_STRING_INLINE(this); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 617 | var s_len = s.length; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 618 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 619 | var start_i = TO_INTEGER(start); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 620 | if (start_i < 0) { |
| 621 | start_i = 0; |
| 622 | } else if (start_i > s_len) { |
| 623 | start_i = s_len; |
| 624 | } |
| 625 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 626 | var end_i = s_len; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 627 | if (!IS_UNDEFINED(end)) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 628 | end_i = TO_INTEGER(end); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 629 | if (end_i > s_len) { |
| 630 | end_i = s_len; |
| 631 | } else { |
| 632 | if (end_i < 0) end_i = 0; |
| 633 | if (start_i > end_i) { |
| 634 | var tmp = end_i; |
| 635 | end_i = start_i; |
| 636 | start_i = tmp; |
| 637 | } |
| 638 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 639 | } |
| 640 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 641 | return (start_i + 1 == end_i |
| 642 | ? %_StringCharAt(s, start_i) |
| 643 | : %_SubString(s, start_i, end_i)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 644 | } |
| 645 | |
| 646 | |
| 647 | // This is not a part of ECMA-262. |
| 648 | function StringSubstr(start, n) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 649 | var s = TO_STRING_INLINE(this); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 650 | var len; |
| 651 | |
| 652 | // Correct n: If not given, set to string length; if explicitly |
| 653 | // set to undefined, zero, or negative, returns empty string. |
| 654 | if (n === void 0) { |
| 655 | len = s.length; |
| 656 | } else { |
| 657 | len = TO_INTEGER(n); |
| 658 | if (len <= 0) return ''; |
| 659 | } |
| 660 | |
| 661 | // Correct start: If not given (or undefined), set to zero; otherwise |
| 662 | // convert to integer and handle negative case. |
| 663 | if (start === void 0) { |
| 664 | start = 0; |
| 665 | } else { |
| 666 | start = TO_INTEGER(start); |
| 667 | // If positive, and greater than or equal to the string length, |
| 668 | // return empty string. |
| 669 | if (start >= s.length) return ''; |
| 670 | // If negative and absolute value is larger than the string length, |
| 671 | // use zero. |
| 672 | if (start < 0) { |
| 673 | start += s.length; |
| 674 | if (start < 0) start = 0; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | var end = start + len; |
| 679 | if (end > s.length) end = s.length; |
| 680 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 681 | return (start + 1 == end |
| 682 | ? %_StringCharAt(s, start) |
| 683 | : %_SubString(s, start, end)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 684 | } |
| 685 | |
| 686 | |
| 687 | // ECMA-262, 15.5.4.16 |
| 688 | function StringToLowerCase() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 689 | return %StringToLowerCase(TO_STRING_INLINE(this)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | |
| 693 | // ECMA-262, 15.5.4.17 |
| 694 | function StringToLocaleLowerCase() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 695 | return %StringToLowerCase(TO_STRING_INLINE(this)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 696 | } |
| 697 | |
| 698 | |
| 699 | // ECMA-262, 15.5.4.18 |
| 700 | function StringToUpperCase() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 701 | return %StringToUpperCase(TO_STRING_INLINE(this)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | |
| 705 | // ECMA-262, 15.5.4.19 |
| 706 | function StringToLocaleUpperCase() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 707 | return %StringToUpperCase(TO_STRING_INLINE(this)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 708 | } |
| 709 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 710 | // ES5, 15.5.4.20 |
| 711 | function StringTrim() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 712 | return %StringTrim(TO_STRING_INLINE(this), true, true); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | function StringTrimLeft() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 716 | return %StringTrim(TO_STRING_INLINE(this), true, false); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 717 | } |
| 718 | |
| 719 | function StringTrimRight() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 720 | return %StringTrim(TO_STRING_INLINE(this), false, true); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 721 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 722 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame^] | 723 | var static_charcode_array = new InternalArray(4); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 724 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 725 | // ECMA-262, section 15.5.3.2 |
| 726 | function StringFromCharCode(code) { |
| 727 | var n = %_ArgumentsLength(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 728 | if (n == 1) { |
| 729 | if (!%_IsSmi(code)) code = ToNumber(code); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 730 | return %_StringCharFromCode(code & 0xffff); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 731 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 732 | |
| 733 | // NOTE: This is not super-efficient, but it is necessary because we |
| 734 | // want to avoid converting to numbers from within the virtual |
| 735 | // machine. Maybe we can find another way of doing this? |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 736 | var codes = static_charcode_array; |
| 737 | for (var i = 0; i < n; i++) { |
| 738 | var code = %_Arguments(i); |
| 739 | if (!%_IsSmi(code)) code = ToNumber(code); |
| 740 | codes[i] = code; |
| 741 | } |
| 742 | codes.length = n; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 743 | return %StringFromCharCodeArray(codes); |
| 744 | } |
| 745 | |
| 746 | |
| 747 | // Helper function for very basic XSS protection. |
| 748 | function HtmlEscape(str) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 749 | return TO_STRING_INLINE(str).replace(/</g, "<") |
| 750 | .replace(/>/g, ">") |
| 751 | .replace(/"/g, """) |
| 752 | .replace(/'/g, "'"); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 753 | }; |
| 754 | |
| 755 | |
| 756 | // Compatibility support for KJS. |
| 757 | // Tested by mozilla/js/tests/js1_5/Regress/regress-276103.js. |
| 758 | function StringLink(s) { |
| 759 | return "<a href=\"" + HtmlEscape(s) + "\">" + this + "</a>"; |
| 760 | } |
| 761 | |
| 762 | |
| 763 | function StringAnchor(name) { |
| 764 | return "<a name=\"" + HtmlEscape(name) + "\">" + this + "</a>"; |
| 765 | } |
| 766 | |
| 767 | |
| 768 | function StringFontcolor(color) { |
| 769 | return "<font color=\"" + HtmlEscape(color) + "\">" + this + "</font>"; |
| 770 | } |
| 771 | |
| 772 | |
| 773 | function StringFontsize(size) { |
| 774 | return "<font size=\"" + HtmlEscape(size) + "\">" + this + "</font>"; |
| 775 | } |
| 776 | |
| 777 | |
| 778 | function StringBig() { |
| 779 | return "<big>" + this + "</big>"; |
| 780 | } |
| 781 | |
| 782 | |
| 783 | function StringBlink() { |
| 784 | return "<blink>" + this + "</blink>"; |
| 785 | } |
| 786 | |
| 787 | |
| 788 | function StringBold() { |
| 789 | return "<b>" + this + "</b>"; |
| 790 | } |
| 791 | |
| 792 | |
| 793 | function StringFixed() { |
| 794 | return "<tt>" + this + "</tt>"; |
| 795 | } |
| 796 | |
| 797 | |
| 798 | function StringItalics() { |
| 799 | return "<i>" + this + "</i>"; |
| 800 | } |
| 801 | |
| 802 | |
| 803 | function StringSmall() { |
| 804 | return "<small>" + this + "</small>"; |
| 805 | } |
| 806 | |
| 807 | |
| 808 | function StringStrike() { |
| 809 | return "<strike>" + this + "</strike>"; |
| 810 | } |
| 811 | |
| 812 | |
| 813 | function StringSub() { |
| 814 | return "<sub>" + this + "</sub>"; |
| 815 | } |
| 816 | |
| 817 | |
| 818 | function StringSup() { |
| 819 | return "<sup>" + this + "</sup>"; |
| 820 | } |
| 821 | |
| 822 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 823 | // ReplaceResultBuilder support. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 824 | function ReplaceResultBuilder(str) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 825 | if (%_ArgumentsLength() > 1) { |
| 826 | this.elements = %_Arguments(1); |
| 827 | } else { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame^] | 828 | this.elements = new InternalArray(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 829 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 830 | this.special_string = str; |
| 831 | } |
| 832 | |
| 833 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 834 | ReplaceResultBuilder.prototype.add = function(str) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 835 | str = TO_STRING_INLINE(str); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 836 | if (str.length > 0) this.elements.push(str); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 837 | } |
| 838 | |
| 839 | |
| 840 | ReplaceResultBuilder.prototype.addSpecialSlice = function(start, end) { |
| 841 | var len = end - start; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 842 | if (start < 0 || len <= 0) return; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 843 | if (start < 0x80000 && len < 0x800) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 844 | this.elements.push((start << 11) | len); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 845 | } else { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 846 | // 0 < len <= String::kMaxLength and Smi::kMaxValue >= String::kMaxLength, |
| 847 | // so -len is a smi. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 848 | var elements = this.elements; |
| 849 | elements.push(-len); |
| 850 | elements.push(start); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 851 | } |
| 852 | } |
| 853 | |
| 854 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 855 | ReplaceResultBuilder.prototype.generate = function() { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 856 | var elements = this.elements; |
| 857 | return %StringBuilderConcat(elements, elements.length, this.special_string); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 858 | } |
| 859 | |
| 860 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 861 | // ------------------------------------------------------------------- |
| 862 | |
| 863 | function SetupString() { |
| 864 | // Setup the constructor property on the String prototype object. |
| 865 | %SetProperty($String.prototype, "constructor", $String, DONT_ENUM); |
| 866 | |
| 867 | |
| 868 | // Setup the non-enumerable functions on the String object. |
| 869 | InstallFunctions($String, DONT_ENUM, $Array( |
| 870 | "fromCharCode", StringFromCharCode |
| 871 | )); |
| 872 | |
| 873 | |
| 874 | // Setup the non-enumerable functions on the String prototype object. |
| 875 | InstallFunctionsOnHiddenPrototype($String.prototype, DONT_ENUM, $Array( |
| 876 | "valueOf", StringValueOf, |
| 877 | "toString", StringToString, |
| 878 | "charAt", StringCharAt, |
| 879 | "charCodeAt", StringCharCodeAt, |
| 880 | "concat", StringConcat, |
| 881 | "indexOf", StringIndexOf, |
| 882 | "lastIndexOf", StringLastIndexOf, |
| 883 | "localeCompare", StringLocaleCompare, |
| 884 | "match", StringMatch, |
| 885 | "replace", StringReplace, |
| 886 | "search", StringSearch, |
| 887 | "slice", StringSlice, |
| 888 | "split", StringSplit, |
| 889 | "substring", StringSubstring, |
| 890 | "substr", StringSubstr, |
| 891 | "toLowerCase", StringToLowerCase, |
| 892 | "toLocaleLowerCase", StringToLocaleLowerCase, |
| 893 | "toUpperCase", StringToUpperCase, |
| 894 | "toLocaleUpperCase", StringToLocaleUpperCase, |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 895 | "trim", StringTrim, |
| 896 | "trimLeft", StringTrimLeft, |
| 897 | "trimRight", StringTrimRight, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 898 | "link", StringLink, |
| 899 | "anchor", StringAnchor, |
| 900 | "fontcolor", StringFontcolor, |
| 901 | "fontsize", StringFontsize, |
| 902 | "big", StringBig, |
| 903 | "blink", StringBlink, |
| 904 | "bold", StringBold, |
| 905 | "fixed", StringFixed, |
| 906 | "italics", StringItalics, |
| 907 | "small", StringSmall, |
| 908 | "strike", StringStrike, |
| 909 | "sub", StringSub, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 910 | "sup", StringSup |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 911 | )); |
| 912 | } |
| 913 | |
| 914 | |
| 915 | SetupString(); |