| // Copyright 2006-2007 Google 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: |
| // |
| // * 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. |
| |
| |
| // This file relies on the fact that the following declaration has been made |
| // in runtime.js: |
| // const $String = global.String; |
| |
| |
| // Set the String function and constructor. |
| %SetCode($String, function(x) { |
| var value = %_ArgumentsLength() == 0 ? '' : ToString(x); |
| if (%IsConstructCall(this)) { |
| %_SetValueOf(this, value); |
| } else { |
| return value; |
| } |
| }); |
| |
| %FunctionSetPrototype($String, new $String()); |
| |
| %AddProperty($String.prototype, "constructor", $String, DONT_ENUM); |
| |
| %AddProperty($String.prototype, "valueOf", function() { |
| if (!IS_STRING(this) && %ClassOf(this) !== 'String') |
| throw new $TypeError('String.prototype.valueOf is not generic'); |
| return %_ValueOf(this); |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "toString", $String.prototype.valueOf, DONT_ENUM); |
| |
| // ECMA-262 section 15.5.4.5 |
| %AddProperty($String.prototype, "charCodeAt", function(pos) { |
| var subject = ToString(this); |
| var index = TO_INTEGER(pos); |
| return %StringCharCodeAt(subject, index); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, section 15.5.4.6 |
| %AddProperty($String.prototype, "concat", function() { |
| var len = %_ArgumentsLength(); |
| var parts = new $Array(len + 1); |
| parts[0] = ToString(this); |
| for (var i = 0; i < len; i++) |
| parts[i + 1] = ToString(%_Arguments(i)); |
| return parts.join(''); |
| }, DONT_ENUM); |
| |
| // Match ES3 and Safari |
| %FunctionSetLength($String.prototype.concat, 1); |
| |
| |
| // SubString is an internal function that returns the sub string of 'string'. |
| // If resulting string is of length 1, we use the one character cache |
| // otherwise we call the runtime system. |
| function SubString(string, start, end) { |
| // Use the one character string cache. |
| if (start + 1 == end) return %CharFromCode(%StringCharCodeAt(string, start)); |
| return %StringSlice(string, start, end); |
| } |
| |
| |
| // ECMA-262, section 15.5.4.11 |
| %AddProperty($String.prototype, "replace", function (search, replace) { |
| var subject = ToString(this); |
| |
| // Delegate to one of the regular expression variants if necessary. |
| if (IS_REGEXP(search)) { |
| if (IS_FUNCTION(replace)) { |
| return StringReplaceRegExpWithFunction(subject, search, replace); |
| } else { |
| return StringReplaceRegExp(subject, search, replace); |
| } |
| } |
| |
| // Convert the search argument to a string and search for it. |
| search = ToString(search); |
| var start = %StringIndexOf(subject, search, 0); |
| if (start < 0) return subject; |
| var end = start + search.length; |
| |
| var builder = new StringBuilder(); |
| // prefix |
| builder.add(SubString(subject, 0, start)); |
| |
| // Compute the string to replace with. |
| if (IS_FUNCTION(replace)) { |
| builder.add(replace.call(null, search, start, subject)); |
| } else { |
| ExpandReplacement(ToString(replace), subject, [ start, end ], builder); |
| } |
| |
| // suffix |
| builder.add(SubString(subject, end, subject.length)); |
| |
| return builder.generate(); |
| }, DONT_ENUM); |
| |
| |
| // Helper function for regular expressions in String.prototype.replace. |
| function StringReplaceRegExp(subject, regexp, replace) { |
| // Compute an array of matches; each match is really a list of |
| // captures - pairs of (start, end) indexes into the subject string. |
| var matches; |
| if (regexp.global) { |
| matches = DoRegExpExecGlobal(regexp, subject); |
| if (matches.length == 0) return subject; |
| } else { |
| var captures = DoRegExpExec(regexp, subject, 0); |
| if (IS_NULL(captures)) return subject; |
| matches = [ captures ]; |
| } |
| |
| // Determine the number of matches. |
| var length = matches.length; |
| |
| // Build the resulting string of subject slices and replacements. |
| var result = new StringBuilder(); |
| var previous = 0; |
| // The caller of StringReplaceRegExp must ensure that replace is not a |
| // function. |
| replace = ToString(replace); |
| for (var i = 0; i < length; i++) { |
| var captures = matches[i]; |
| result.add(SubString(subject, previous, captures[0])); |
| ExpandReplacement(replace, subject, captures, result); |
| previous = captures[1]; // continue after match |
| } |
| result.add(SubString(subject, previous, subject.length)); |
| return result.generate(); |
| }; |
| |
| |
| // Expand the $-expressions in the string and return a new string with |
| // the result. |
| function ExpandReplacement(string, subject, captures, builder) { |
| var next = %StringIndexOf(string, '$', 0); |
| if (next < 0) { |
| builder.add(string); |
| return; |
| } |
| |
| // Compute the number of captures; see ECMA-262, 15.5.4.11, p. 102. |
| var m = captures.length >> 1; // includes the match |
| |
| if (next > 0) builder.add(SubString(string, 0, next)); |
| var length = string.length; |
| |
| while (true) { |
| var expansion = '$'; |
| var position = next + 1; |
| if (position < length) { |
| var peek = %StringCharCodeAt(string, position); |
| if (peek == 36) { // $$ |
| ++position; |
| } else if (peek == 38) { // $& - match |
| ++position; |
| expansion = SubString(subject, captures[0], captures[1]); |
| } else if (peek == 96) { // $` - prefix |
| ++position; |
| expansion = SubString(subject, 0, captures[0]); |
| } else if (peek == 39) { // $' - suffix |
| ++position; |
| expansion = SubString(subject, captures[1], subject.length); |
| } else if (peek >= 48 && peek <= 57) { // $n, 0 <= n <= 9 |
| ++position; |
| var n = peek - 48; |
| if (position < length) { |
| peek = %StringCharCodeAt(string, position); |
| // $nn, 01 <= nn <= 99 |
| if (n != 0 && peek == 48 || peek >= 49 && peek <= 57) { |
| var nn = n * 10 + (peek - 48); |
| if (nn < m) { |
| // If the two digit capture reference is within range of |
| // the captures, we use it instead of the single digit |
| // one. Otherwise, we fall back to using the single |
| // digit reference. This matches the behavior of |
| // SpiderMonkey. |
| ++position; |
| n = nn; |
| } |
| } |
| } |
| if (0 < n && n < m) { |
| expansion = CaptureString(subject, captures, n); |
| if (IS_UNDEFINED(expansion)) expansion = ""; |
| } else { |
| // Because of the captures range check in the parsing of two |
| // digit capture references, we can only enter here when a |
| // single digit capture reference is outside the range of |
| // captures. |
| --position; |
| } |
| } |
| } |
| |
| // Append the $ expansion and go the the next $ in the string. |
| builder.add(expansion); |
| next = %StringIndexOf(string, '$', position); |
| |
| // Return if there are no more $ characters in the string. If we |
| // haven't reached the end, we need to append the suffix. |
| if (next < 0) { |
| if (position < length) { |
| builder.add(SubString(string, position, length)); |
| } |
| return; |
| } |
| |
| // Append substring between the previous and the next $ character. |
| builder.add(SubString(string, position, next)); |
| } |
| }; |
| |
| |
| // Compute the string of a given PCRE capture. |
| function CaptureString(string, captures, index) { |
| // Scale the index. |
| var scaled = index << 1; |
| // Compute start and end. |
| var start = captures[scaled]; |
| var end = captures[scaled + 1]; |
| // If either start or end is missing return undefined. |
| if (start < 0 || end < 0) return; |
| return SubString(string, start, end); |
| }; |
| |
| |
| // Helper function for replacing regular expressions with the result of a |
| // function application in String.prototype.replace. The function application |
| // must be interleaved with the regexp matching (contrary to ECMA-262 |
| // 15.5.4.11) to mimic SpiderMonkey and KJS behavior when the function uses |
| // the static properties of the RegExp constructor. Example: |
| // 'abcd'.replace(/(.)/g, function() { return RegExp.$1; } |
| // should be 'abcd' and not 'dddd' (or anything else). |
| function StringReplaceRegExpWithFunction(subject, regexp, replace) { |
| var result = new ReplaceResultBuilder(subject); |
| // Captures is an array of pairs of (start, end) indices for the match and |
| // any captured substrings. |
| var captures = DoRegExpExec(regexp, subject, 0); |
| if (IS_NULL(captures)) return subject; |
| |
| // There's at least one match. If the regexp is global, we have to loop |
| // over all matches. The loop is not in C++ code here like the one in |
| // RegExp.prototype.exec, because of the interleaved function application. |
| // Unfortunately, that means this code is nearly duplicated, here and in |
| // jsregexp.cc. |
| if (regexp.global) { |
| var previous = 0; |
| do { |
| result.addSpecialSlice(previous, captures[0]); |
| result.add(ApplyReplacementFunction(replace, captures, subject)); |
| // Continue with the next match. |
| previous = captures[1]; |
| // Increment previous if we matched an empty string, as per ECMA-262 |
| // 15.5.4.10. |
| if (captures[0] == captures[1]) previous++; |
| |
| // Per ECMA-262 15.10.6.2, if the previous index is greater than the |
| // string length, there is no match |
| captures = (previous > subject.length) |
| ? null |
| : DoRegExpExec(regexp, subject, previous); |
| } while (!IS_NULL(captures)); |
| |
| // Tack on the final right substring after the last match, if necessary. |
| if (previous < subject.length) { |
| result.addSpecialSlice(previous, subject.length); |
| } |
| } else { // Not a global regexp, no need to loop. |
| result.addSpecialSlice(0, captures[0]); |
| result.add(ApplyReplacementFunction(replace, captures, subject)); |
| result.addSpecialSlice(captures[1], subject.length); |
| } |
| |
| return result.generate(); |
| } |
| |
| |
| // Helper function to apply a string replacement function once. |
| function ApplyReplacementFunction(replace, captures, subject) { |
| // Compute the parameter list consisting of the match, captures, index, |
| // and subject for the replace function invocation. |
| var index = captures[0]; |
| // The number of captures plus one for the match. |
| var m = captures.length >> 1; |
| if (m == 1) { |
| var s = CaptureString(subject, captures, 0); |
| return ToString(replace.call(null, s, index, subject)); |
| } |
| var parameters = $Array(m + 2); |
| for (var j = 0; j < m; j++) { |
| parameters[j] = CaptureString(subject, captures, j); |
| } |
| parameters[j] = index; |
| parameters[j + 1] = subject; |
| return ToString(replace.apply(null, parameters)); |
| } |
| |
| |
| // ECMA-262 section 15.5.4.7 |
| %AddProperty($String.prototype, "indexOf", function(searchString /* position */) { // length == 1 |
| var str = ToString(this); |
| var searchStr = ToString(searchString); |
| var index = 0; |
| if (%_ArgumentsLength() > 1) { |
| var arg1 = %_Arguments(1); // position |
| index = TO_INTEGER(arg1); |
| } |
| if (index < 0) index = 0; |
| if (index > str.length) index = str.length; |
| return %StringIndexOf(str, searchStr, index); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.5.4.8 |
| %AddProperty($String.prototype, "lastIndexOf", function(searchString /* position */) { // length == 1 |
| var sub = ToString(this); |
| var pat = ToString(searchString); |
| var index = (%_ArgumentsLength() > 1) |
| ? ToNumber(%_Arguments(1) /* position */) |
| : %NumberNaN(1); |
| var firstIndex; |
| if ($isNaN(index)) { |
| firstIndex = sub.length - pat.length; |
| } else { |
| firstIndex = TO_INTEGER(index); |
| if (firstIndex + pat.length > sub.length) { |
| firstIndex = sub.length - pat.length; |
| } |
| } |
| return %StringLastIndexOf(sub, pat, firstIndex); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.5.4.9 |
| // |
| // This function is implementation specific. For now, we do not |
| // do anything locale specific. |
| %AddProperty($String.prototype, "localeCompare", function(other) { |
| if (%_ArgumentsLength() === 0) return 0; |
| |
| var this_str = ToString(this); |
| var other_str = ToString(other); |
| return %StringLocaleCompare(this_str, other_str); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.5.4.10 |
| %AddProperty($String.prototype, "match", function(regexp) { |
| if (!IS_REGEXP(regexp)) regexp = new ORIGINAL_REGEXP(regexp); |
| var subject = ToString(this); |
| |
| if (!regexp.global) return regexp.exec(subject); |
| var matches = DoRegExpExecGlobal(regexp, subject); |
| |
| // If the regexp did not match, return null. |
| if (matches.length == 0) return null; |
| |
| // Build the result array. |
| var result = new $Array(match_string); |
| for (var i = 0; i < matches.length; ++i) { |
| var match = matches[i]; |
| var match_string = subject.slice(match[0], match[1]); |
| result[i] = match_string; |
| } |
| |
| return result; |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.5.4.12 |
| %AddProperty($String.prototype, "search", function(re) { |
| var regexp = new ORIGINAL_REGEXP(re); |
| var s = ToString(this); |
| var last_idx = regexp.lastIndex; // keep old lastIndex |
| regexp.lastIndex = 0; // ignore re.global property |
| var result = regexp.exec(s); |
| regexp.lastIndex = last_idx; // restore lastIndex |
| if (result == null) |
| return -1; |
| else |
| return result.index; |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.5.4.13 |
| %AddProperty($String.prototype, "slice", function(start, end) { |
| var s = ToString(this); |
| var s_len = s.length; |
| var start_i = TO_INTEGER(start); |
| var end_i = s_len; |
| if (end !== void 0) |
| end_i = TO_INTEGER(end); |
| |
| if (start_i < 0) { |
| start_i += s_len; |
| if (start_i < 0) |
| start_i = 0; |
| } else { |
| if (start_i > s_len) |
| start_i = s_len; |
| } |
| |
| if (end_i < 0) { |
| end_i += s_len; |
| if (end_i < 0) |
| end_i = 0; |
| } else { |
| if (end_i > s_len) |
| end_i = s_len; |
| } |
| |
| var num_c = end_i - start_i; |
| if (num_c < 0) |
| num_c = 0; |
| |
| return SubString(s, start_i, start_i + num_c); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.5.4.14 |
| %AddProperty($String.prototype, "split", function(separator, limit) { |
| var subject = ToString(this); |
| var result = []; |
| var lim = (limit === void 0) ? 0xffffffff : ToUint32(limit); |
| |
| if (lim === 0) return result; |
| |
| // ECMA-262 says that if separator is undefined, the result should |
| // be an array of size 1 containing the entire string. SpiderMonkey |
| // and KJS have this behaviour only when no separator is given. If |
| // undefined is explicitly given, they convert it to a string and |
| // use that. We do as SpiderMonkey and KJS. |
| if (%_ArgumentsLength() === 0) { |
| result[result.length] = subject; |
| return result; |
| } |
| |
| var length = subject.length; |
| var currentIndex = 0; |
| var startIndex = 0; |
| |
| var sep = IS_REGEXP(separator) ? separator : ToString(separator); |
| |
| if (length === 0) { |
| if (splitMatch(sep, subject, 0, 0) != null) return result; |
| result[result.length] = subject; |
| return result; |
| } |
| |
| while (true) { |
| |
| if (startIndex === length) { |
| result[result.length] = subject.slice(currentIndex, length); |
| return result; |
| } |
| |
| var match = splitMatch(sep, subject, currentIndex, startIndex); |
| |
| if (IS_NULL(match)) { |
| result[result.length] = subject.slice(currentIndex, length); |
| return result; |
| } |
| |
| var endIndex = match[0]; |
| |
| // We ignore a zero-length match at the currentIndex. |
| if (startIndex === endIndex && endIndex === currentIndex) { |
| startIndex++; |
| continue; |
| } |
| |
| result[result.length] = match[1]; |
| if (result.length === lim) return result; |
| |
| for (var i = 2; i < match.length; i++) { |
| result[result.length] = match[i]; |
| if (result.length === lim) return result; |
| } |
| |
| startIndex = currentIndex = endIndex; |
| } |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.5.4.14 |
| // Helper function used by split. |
| function splitMatch(separator, subject, current_index, start_index) { |
| if (IS_REGEXP(separator)) { |
| var ovector = DoRegExpExec(separator, subject, start_index); |
| if (ovector == null) return null; |
| var nof_results = ovector.length >> 1; |
| var result = new $Array(nof_results + 1); |
| result[0] = ovector[1]; |
| result[1] = subject.slice(current_index, ovector[0]); |
| for (var i = 1; i < nof_results; i++) { |
| var matching_start = ovector[2*i]; |
| var matching_end = ovector[2*i + 1]; |
| if (matching_start != -1 && matching_end != -1) { |
| result[i + 1] = subject.slice(matching_start, matching_end); |
| } |
| } |
| return result; |
| } |
| |
| var separatorIndex = subject.indexOf(separator, start_index); |
| if (separatorIndex === -1) return null; |
| |
| return [ separatorIndex + separator.length, subject.slice(current_index, separatorIndex) ]; |
| }; |
| |
| |
| // ECMA-262 section 15.5.4.15 |
| %AddProperty($String.prototype, "substring", function(start, end) { |
| var s = ToString(this); |
| var s_len = s.length; |
| var start_i = TO_INTEGER(start); |
| var end_i = s_len; |
| if (!IS_UNDEFINED(end)) |
| end_i = TO_INTEGER(end); |
| |
| if (start_i < 0) start_i = 0; |
| if (start_i > s_len) start_i = s_len; |
| if (end_i < 0) end_i = 0; |
| if (end_i > s_len) end_i = s_len; |
| |
| if (start_i > end_i) { |
| var tmp = end_i; |
| end_i = start_i; |
| start_i = tmp; |
| } |
| |
| return SubString(s, start_i, end_i); |
| }, DONT_ENUM); |
| |
| |
| // This is not a part of ECMA-262. |
| %AddProperty($String.prototype, "substr", function(start, n) { |
| var s = ToString(this); |
| var len; |
| |
| // Correct n: If not given, set to string length; if explicitly |
| // set to undefined, zero, or negative, returns empty string. |
| if (n === void 0) { |
| len = s.length; |
| } else { |
| len = TO_INTEGER(n); |
| if (len <= 0) return ''; |
| } |
| |
| // Correct start: If not given (or undefined), set to zero; otherwise |
| // convert to integer and handle negative case. |
| if (start === void 0) { |
| start = 0; |
| } else { |
| start = TO_INTEGER(start); |
| // If positive, and greater than or equal to the string length, |
| // return empty string. |
| if (start >= s.length) return ''; |
| // If negative and absolute value is larger than the string length, |
| // use zero. |
| if (start < 0) { |
| start += s.length; |
| if (start < 0) start = 0; |
| } |
| } |
| |
| var end = start + len; |
| if (end > s.length) end = s.length; |
| |
| return SubString(s, start, end); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, 15.5.4.16 |
| %AddProperty($String.prototype, "toLowerCase", function() { |
| return %StringToLowerCase(ToString(this)); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, 15.5.4.17 |
| %AddProperty($String.prototype, "toLocaleLowerCase", $String.prototype.toLowerCase, DONT_ENUM); |
| |
| |
| // ECMA-262, 15.5.4.18 |
| %AddProperty($String.prototype, "toUpperCase", function() { |
| return %StringToUpperCase(ToString(this)); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, 15.5.4.19 |
| %AddProperty($String.prototype, "toLocaleUpperCase", $String.prototype.toUpperCase, DONT_ENUM); |
| |
| |
| // ECMA-262, section 15.5.3.2 |
| %AddProperty($String, "fromCharCode", function(code) { |
| var n = %_ArgumentsLength(); |
| if (n == 1) return %CharFromCode(ToNumber(code) & 0xffff) |
| |
| // NOTE: This is not super-efficient, but it is necessary because we |
| // want to avoid converting to numbers from within the virtual |
| // machine. Maybe we can find another way of doing this? |
| var codes = new $Array(n); |
| for (var i = 0; i < n; i++) codes[i] = ToNumber(%_Arguments(i)); |
| return %StringFromCharCodeArray(codes); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, section 15.5.4.4 |
| function CharAt(pos) { |
| var subject = ToString(this); |
| var index = TO_INTEGER(pos); |
| if (index >= subject.length || index < 0) return ""; |
| return %CharFromCode(%StringCharCodeAt(subject, index)); |
| }; |
| |
| %AddProperty($String.prototype, "charAt", CharAt, DONT_ENUM); |
| |
| |
| // Helper function for very basic XSS protection. |
| function HtmlEscape(str) { |
| return ToString(str).replace(/</g, "<") |
| .replace(/>/g, ">") |
| .replace(/"/g, """) |
| .replace(/'/g, "'"); |
| }; |
| |
| |
| // Compatibility support for KJS. |
| // Tested by mozilla/js/tests/js1_5/Regress/regress-276103.js. |
| %AddProperty($String.prototype, "link", function(link) { |
| return "<a href=\"" + HtmlEscape(link) + "\">" + this + "</a>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "anchor", function(name) { |
| return "<a name=\"" + HtmlEscape(name) + "\">" + this + "</a>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "fontcolor", function(color) { |
| return "<font color=\"" + HtmlEscape(color) + "\">" + this + "</font>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "fontsize", function(size) { |
| return "<font size=\"" + HtmlEscape(size) + "\">" + this + "</font>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "big", function() { |
| return "<big>" + this + "</big>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "blink", function() { |
| return "<blink>" + this + "</blink>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "bold", function() { |
| return "<b>" + this + "</b>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "fixed", function() { |
| return "<tt>" + this + "</tt>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "italics", function() { |
| return "<i>" + this + "</i>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "small", function() { |
| return "<small>" + this + "</small>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "strike", function() { |
| return "<strike>" + this + "</strike>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "sub", function() { |
| return "<sub>" + this + "</sub>"; |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($String.prototype, "sup", function() { |
| return "<sup>" + this + "</sup>"; |
| }, DONT_ENUM); |
| |
| |
| // StringBuilder support. |
| |
| function StringBuilder() { |
| this.elements = new $Array(); |
| } |
| |
| |
| function ReplaceResultBuilder(str) { |
| this.elements = new $Array(); |
| this.special_string = str; |
| } |
| |
| |
| ReplaceResultBuilder.prototype.add = |
| StringBuilder.prototype.add = function(str) { |
| if (!IS_STRING(str)) str = ToString(str); |
| if (str.length > 0) { |
| var elements = this.elements; |
| elements[elements.length] = str; |
| } |
| } |
| |
| |
| ReplaceResultBuilder.prototype.addSpecialSlice = function(start, end) { |
| var len = end - start; |
| if (len == 0) return; |
| var elements = this.elements; |
| if (start >= 0 && len >= 0 && start < 0x80000 && len < 0x800) { |
| elements[elements.length] = (start << 11) + len; |
| } else { |
| elements[elements.length] = SubString(this.special_string, start, end); |
| } |
| } |
| |
| |
| StringBuilder.prototype.generate = function() { |
| return %StringBuilderConcat(this.elements, ""); |
| } |
| |
| |
| ReplaceResultBuilder.prototype.generate = function() { |
| return %StringBuilderConcat(this.elements, this.special_string); |
| } |