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91 lines
3.0 KiB
91 lines
3.0 KiB
2 years ago
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.splitAtTopLevelOnly = splitAtTopLevelOnly;
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var regex = _interopRequireWildcard(require("../lib/regex"));
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function _getRequireWildcardCache() {
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if (typeof WeakMap !== "function") return null;
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var cache = new WeakMap();
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_getRequireWildcardCache = function() {
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return cache;
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};
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return cache;
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}
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function _interopRequireWildcard(obj) {
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if (obj && obj.__esModule) {
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return obj;
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}
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if (obj === null || typeof obj !== "object" && typeof obj !== "function") {
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return {
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default: obj
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};
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}
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var cache = _getRequireWildcardCache();
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if (cache && cache.has(obj)) {
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return cache.get(obj);
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}
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var newObj = {};
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var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;
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for(var key in obj){
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if (Object.prototype.hasOwnProperty.call(obj, key)) {
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var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;
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if (desc && (desc.get || desc.set)) {
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Object.defineProperty(newObj, key, desc);
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} else {
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newObj[key] = obj[key];
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}
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}
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}
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newObj.default = obj;
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if (cache) {
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cache.set(obj, newObj);
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}
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return newObj;
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}
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function* splitAtTopLevelOnly(input, separator) {
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let SPECIALS = new RegExp(`[(){}\\[\\]${regex.escape(separator)}]`, "g");
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let depth = 0;
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let lastIndex = 0;
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let found = false;
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let separatorIndex = 0;
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let separatorStart = 0;
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let separatorLength = separator.length;
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// Find all paren-like things & character
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// And only split on commas if they're top-level
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for (let match of input.matchAll(SPECIALS)){
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let matchesSeparator = match[0] === separator[separatorIndex];
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let atEndOfSeparator = separatorIndex === separatorLength - 1;
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let matchesFullSeparator = matchesSeparator && atEndOfSeparator;
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if (match[0] === "(") depth++;
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if (match[0] === ")") depth--;
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if (match[0] === "[") depth++;
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if (match[0] === "]") depth--;
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if (match[0] === "{") depth++;
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if (match[0] === "}") depth--;
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if (matchesSeparator && depth === 0) {
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if (separatorStart === 0) {
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separatorStart = match.index;
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}
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separatorIndex++;
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}
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if (matchesFullSeparator && depth === 0) {
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found = true;
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yield input.substring(lastIndex, separatorStart);
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lastIndex = separatorStart + separatorLength;
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}
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if (separatorIndex === separatorLength) {
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separatorIndex = 0;
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separatorStart = 0;
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}
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}
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// Provide the last segment of the string if available
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// Otherwise the whole string since no `char`s were found
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// This mirrors the behavior of string.split()
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if (found) {
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yield input.substring(lastIndex);
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} else {
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yield input;
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}
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}
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