68 lines
2.6 KiB
JavaScript
68 lines
2.6 KiB
JavaScript
'use strict';
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var $ = require('../internals/export');
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var requireObjectCoercible = require('../internals/require-object-coercible');
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var isRegExp = require('../internals/is-regexp');
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var getRegExpFlags = require('../internals/regexp-flags');
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var getSubstitution = require('../internals/get-substitution');
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var wellKnownSymbol = require('../internals/well-known-symbol');
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var IS_PURE = require('../internals/is-pure');
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var REPLACE = wellKnownSymbol('replace');
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var RegExpPrototype = RegExp.prototype;
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var max = Math.max;
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var stringIndexOf = function (string, searchValue, fromIndex) {
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if (fromIndex > string.length) return -1;
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if (searchValue === '') return fromIndex;
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return string.indexOf(searchValue, fromIndex);
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};
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// `String.prototype.replaceAll` method
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// https://tc39.es/ecma262/#sec-string.prototype.replaceall
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$({ target: 'String', proto: true }, {
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replaceAll: function replaceAll(searchValue, replaceValue) {
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var O = requireObjectCoercible(this);
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var IS_REG_EXP, flags, replacer, string, searchString, functionalReplace, searchLength, advanceBy, replacement;
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var position = 0;
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var endOfLastMatch = 0;
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var result = '';
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if (searchValue != null) {
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IS_REG_EXP = isRegExp(searchValue);
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if (IS_REG_EXP) {
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flags = String(requireObjectCoercible('flags' in RegExpPrototype
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? searchValue.flags
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: getRegExpFlags.call(searchValue)
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));
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if (!~flags.indexOf('g')) throw TypeError('`.replaceAll` does not allow non-global regexes');
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}
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replacer = searchValue[REPLACE];
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if (replacer !== undefined) {
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return replacer.call(searchValue, O, replaceValue);
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} else if (IS_PURE && IS_REG_EXP) {
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return String(O).replace(searchValue, replaceValue);
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}
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}
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string = String(O);
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searchString = String(searchValue);
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functionalReplace = typeof replaceValue === 'function';
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if (!functionalReplace) replaceValue = String(replaceValue);
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searchLength = searchString.length;
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advanceBy = max(1, searchLength);
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position = stringIndexOf(string, searchString, 0);
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while (position !== -1) {
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if (functionalReplace) {
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replacement = String(replaceValue(searchString, position, string));
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} else {
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replacement = getSubstitution(searchString, string, position, [], undefined, replaceValue);
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}
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result += string.slice(endOfLastMatch, position) + replacement;
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endOfLastMatch = position + searchLength;
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position = stringIndexOf(string, searchString, position + advanceBy);
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}
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if (endOfLastMatch < string.length) {
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result += string.slice(endOfLastMatch);
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}
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return result;
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}
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});
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