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File Name : parser.js

"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _root = _interopRequireDefault(require("./selectors/root"));
var _selector = _interopRequireDefault(require("./selectors/selector"));
var _className = _interopRequireDefault(require("./selectors/className"));
var _comment = _interopRequireDefault(require("./selectors/comment"));
var _id = _interopRequireDefault(require("./selectors/id"));
var _tag = _interopRequireDefault(require("./selectors/tag"));
var _string = _interopRequireDefault(require("./selectors/string"));
var _pseudo = _interopRequireDefault(require("./selectors/pseudo"));
var _attribute = _interopRequireWildcard(require("./selectors/attribute"));
var _universal = _interopRequireDefault(require("./selectors/universal"));
var _combinator = _interopRequireDefault(require("./selectors/combinator"));
var _nesting = _interopRequireDefault(require("./selectors/nesting"));
var _sortAscending = _interopRequireDefault(require("./sortAscending"));
var _tokenize = _interopRequireWildcard(require("./tokenize"));
var tokens = _interopRequireWildcard(require("./tokenTypes"));
var types = _interopRequireWildcard(require("./selectors/types"));
var _util = require("./util");
var _WHITESPACE_TOKENS, _Object$assign;
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
var WHITESPACE_TOKENS = (_WHITESPACE_TOKENS = {}, _WHITESPACE_TOKENS[tokens.space] = true, _WHITESPACE_TOKENS[tokens.cr] = true, _WHITESPACE_TOKENS[tokens.feed] = true, _WHITESPACE_TOKENS[tokens.newline] = true, _WHITESPACE_TOKENS[tokens.tab] = true, _WHITESPACE_TOKENS);
var WHITESPACE_EQUIV_TOKENS = Object.assign({}, WHITESPACE_TOKENS, (_Object$assign = {}, _Object$assign[tokens.comment] = true, _Object$assign));
function tokenStart(token) {
  return {
    line: token[_tokenize.FIELDS.START_LINE],
    column: token[_tokenize.FIELDS.START_COL]
  };
}
function tokenEnd(token) {
  return {
    line: token[_tokenize.FIELDS.END_LINE],
    column: token[_tokenize.FIELDS.END_COL]
  };
}
function getSource(startLine, startColumn, endLine, endColumn) {
  return {
    start: {
      line: startLine,
      column: startColumn
    },
    end: {
      line: endLine,
      column: endColumn
    }
  };
}
function getTokenSource(token) {
  return getSource(token[_tokenize.FIELDS.START_LINE], token[_tokenize.FIELDS.START_COL], token[_tokenize.FIELDS.END_LINE], token[_tokenize.FIELDS.END_COL]);
}
function getTokenSourceSpan(startToken, endToken) {
  if (!startToken) {
    return undefined;
  }
  return getSource(startToken[_tokenize.FIELDS.START_LINE], startToken[_tokenize.FIELDS.START_COL], endToken[_tokenize.FIELDS.END_LINE], endToken[_tokenize.FIELDS.END_COL]);
}
function unescapeProp(node, prop) {
  var value = node[prop];
  if (typeof value !== "string") {
    return;
  }
  if (value.indexOf("\\") !== -1) {
    (0, _util.ensureObject)(node, 'raws');
    node[prop] = (0, _util.unesc)(value);
    if (node.raws[prop] === undefined) {
      node.raws[prop] = value;
    }
  }
  return node;
}
function indexesOf(array, item) {
  var i = -1;
  var indexes = [];
  while ((i = array.indexOf(item, i + 1)) !== -1) {
    indexes.push(i);
  }
  return indexes;
}
function uniqs() {
  var list = Array.prototype.concat.apply([], arguments);
  return list.filter(function (item, i) {
    return i === list.indexOf(item);
  });
}
var Parser = /*#__PURE__*/function () {
  function Parser(rule, options) {
    if (options === void 0) {
      options = {};
    }
    this.rule = rule;
    this.options = Object.assign({
      lossy: false,
      safe: false
    }, options);
    this.position = 0;
    this.css = typeof this.rule === 'string' ? this.rule : this.rule.selector;
    this.tokens = (0, _tokenize["default"])({
      css: this.css,
      error: this._errorGenerator(),
      safe: this.options.safe
    });
    var rootSource = getTokenSourceSpan(this.tokens[0], this.tokens[this.tokens.length - 1]);
    this.root = new _root["default"]({
      source: rootSource
    });
    this.root.errorGenerator = this._errorGenerator();
    var selector = new _selector["default"]({
      source: {
        start: {
          line: 1,
          column: 1
        }
      },
      sourceIndex: 0
    });
    this.root.append(selector);
    this.current = selector;
    this.loop();
  }
  var _proto = Parser.prototype;
  _proto._errorGenerator = function _errorGenerator() {
    var _this = this;
    return function (message, errorOptions) {
      if (typeof _this.rule === 'string') {
        return new Error(message);
      }
      return _this.rule.error(message, errorOptions);
    };
  };
  _proto.attribute = function attribute() {
    var attr = [];
    var startingToken = this.currToken;
    this.position++;
    while (this.position < this.tokens.length && this.currToken[_tokenize.FIELDS.TYPE] !== tokens.closeSquare) {
      attr.push(this.currToken);
      this.position++;
    }
    if (this.currToken[_tokenize.FIELDS.TYPE] !== tokens.closeSquare) {
      return this.expected('closing square bracket', this.currToken[_tokenize.FIELDS.START_POS]);
    }
    var len = attr.length;
    var node = {
      source: getSource(startingToken[1], startingToken[2], this.currToken[3], this.currToken[4]),
      sourceIndex: startingToken[_tokenize.FIELDS.START_POS]
    };
    if (len === 1 && !~[tokens.word].indexOf(attr[0][_tokenize.FIELDS.TYPE])) {
      return this.expected('attribute', attr[0][_tokenize.FIELDS.START_POS]);
    }
    var pos = 0;
    var spaceBefore = '';
    var commentBefore = '';
    var lastAdded = null;
    var spaceAfterMeaningfulToken = false;
    while (pos < len) {
      var token = attr[pos];
      var content = this.content(token);
      var next = attr[pos + 1];
      switch (token[_tokenize.FIELDS.TYPE]) {
        case tokens.space:
          // if (
          //     len === 1 ||
          //     pos === 0 && this.content(next) === '|'
          // ) {
          //     return this.expected('attribute', token[TOKEN.START_POS], content);
          // }
          spaceAfterMeaningfulToken = true;
          if (this.options.lossy) {
            break;
          }
          if (lastAdded) {
            (0, _util.ensureObject)(node, 'spaces', lastAdded);
            var prevContent = node.spaces[lastAdded].after || '';
            node.spaces[lastAdded].after = prevContent + content;
            var existingComment = (0, _util.getProp)(node, 'raws', 'spaces', lastAdded, 'after') || null;
            if (existingComment) {
              node.raws.spaces[lastAdded].after = existingComment + content;
            }
          } else {
            spaceBefore = spaceBefore + content;
            commentBefore = commentBefore + content;
          }
          break;
        case tokens.asterisk:
          if (next[_tokenize.FIELDS.TYPE] === tokens.equals) {
            node.operator = content;
            lastAdded = 'operator';
          } else if ((!node.namespace || lastAdded === "namespace" && !spaceAfterMeaningfulToken) && next) {
            if (spaceBefore) {
              (0, _util.ensureObject)(node, 'spaces', 'attribute');
              node.spaces.attribute.before = spaceBefore;
              spaceBefore = '';
            }
            if (commentBefore) {
              (0, _util.ensureObject)(node, 'raws', 'spaces', 'attribute');
              node.raws.spaces.attribute.before = spaceBefore;
              commentBefore = '';
            }
            node.namespace = (node.namespace || "") + content;
            var rawValue = (0, _util.getProp)(node, 'raws', 'namespace') || null;
            if (rawValue) {
              node.raws.namespace += content;
            }
            lastAdded = 'namespace';
          }
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.dollar:
          if (lastAdded === "value") {
            var oldRawValue = (0, _util.getProp)(node, 'raws', 'value');
            node.value += "$";
            if (oldRawValue) {
              node.raws.value = oldRawValue + "$";
            }
            break;
          }
        // Falls through
        case tokens.caret:
          if (next[_tokenize.FIELDS.TYPE] === tokens.equals) {
            node.operator = content;
            lastAdded = 'operator';
          }
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.combinator:
          if (content === '~' && next[_tokenize.FIELDS.TYPE] === tokens.equals) {
            node.operator = content;
            lastAdded = 'operator';
          }
          if (content !== '|') {
            spaceAfterMeaningfulToken = false;
            break;
          }
          if (next[_tokenize.FIELDS.TYPE] === tokens.equals) {
            node.operator = content;
            lastAdded = 'operator';
          } else if (!node.namespace && !node.attribute) {
            node.namespace = true;
          }
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.word:
          if (next && this.content(next) === '|' && attr[pos + 2] && attr[pos + 2][_tokenize.FIELDS.TYPE] !== tokens.equals &&
          // this look-ahead probably fails with comment nodes involved.
          !node.operator && !node.namespace) {
            node.namespace = content;
            lastAdded = 'namespace';
          } else if (!node.attribute || lastAdded === "attribute" && !spaceAfterMeaningfulToken) {
            if (spaceBefore) {
              (0, _util.ensureObject)(node, 'spaces', 'attribute');
              node.spaces.attribute.before = spaceBefore;
              spaceBefore = '';
            }
            if (commentBefore) {
              (0, _util.ensureObject)(node, 'raws', 'spaces', 'attribute');
              node.raws.spaces.attribute.before = commentBefore;
              commentBefore = '';
            }
            node.attribute = (node.attribute || "") + content;
            var _rawValue = (0, _util.getProp)(node, 'raws', 'attribute') || null;
            if (_rawValue) {
              node.raws.attribute += content;
            }
            lastAdded = 'attribute';
          } else if (!node.value && node.value !== "" || lastAdded === "value" && !(spaceAfterMeaningfulToken || node.quoteMark)) {
            var _unescaped = (0, _util.unesc)(content);
            var _oldRawValue = (0, _util.getProp)(node, 'raws', 'value') || '';
            var oldValue = node.value || '';
            node.value = oldValue + _unescaped;
            node.quoteMark = null;
            if (_unescaped !== content || _oldRawValue) {
              (0, _util.ensureObject)(node, 'raws');
              node.raws.value = (_oldRawValue || oldValue) + content;
            }
            lastAdded = 'value';
          } else {
            var insensitive = content === 'i' || content === "I";
            if ((node.value || node.value === '') && (node.quoteMark || spaceAfterMeaningfulToken)) {
              node.insensitive = insensitive;
              if (!insensitive || content === "I") {
                (0, _util.ensureObject)(node, 'raws');
                node.raws.insensitiveFlag = content;
              }
              lastAdded = 'insensitive';
              if (spaceBefore) {
                (0, _util.ensureObject)(node, 'spaces', 'insensitive');
                node.spaces.insensitive.before = spaceBefore;
                spaceBefore = '';
              }
              if (commentBefore) {
                (0, _util.ensureObject)(node, 'raws', 'spaces', 'insensitive');
                node.raws.spaces.insensitive.before = commentBefore;
                commentBefore = '';
              }
            } else if (node.value || node.value === '') {
              lastAdded = 'value';
              node.value += content;
              if (node.raws.value) {
                node.raws.value += content;
              }
            }
          }
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.str:
          if (!node.attribute || !node.operator) {
            return this.error("Expected an attribute followed by an operator preceding the string.", {
              index: token[_tokenize.FIELDS.START_POS]
            });
          }
          var _unescapeValue = (0, _attribute.unescapeValue)(content),
            unescaped = _unescapeValue.unescaped,
            quoteMark = _unescapeValue.quoteMark;
          node.value = unescaped;
          node.quoteMark = quoteMark;
          lastAdded = 'value';
          (0, _util.ensureObject)(node, 'raws');
          node.raws.value = content;
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.equals:
          if (!node.attribute) {
            return this.expected('attribute', token[_tokenize.FIELDS.START_POS], content);
          }
          if (node.value) {
            return this.error('Unexpected "=" found; an operator was already defined.', {
              index: token[_tokenize.FIELDS.START_POS]
            });
          }
          node.operator = node.operator ? node.operator + content : content;
          lastAdded = 'operator';
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.comment:
          if (lastAdded) {
            if (spaceAfterMeaningfulToken || next && next[_tokenize.FIELDS.TYPE] === tokens.space || lastAdded === 'insensitive') {
              var lastComment = (0, _util.getProp)(node, 'spaces', lastAdded, 'after') || '';
              var rawLastComment = (0, _util.getProp)(node, 'raws', 'spaces', lastAdded, 'after') || lastComment;
              (0, _util.ensureObject)(node, 'raws', 'spaces', lastAdded);
              node.raws.spaces[lastAdded].after = rawLastComment + content;
            } else {
              var lastValue = node[lastAdded] || '';
              var rawLastValue = (0, _util.getProp)(node, 'raws', lastAdded) || lastValue;
              (0, _util.ensureObject)(node, 'raws');
              node.raws[lastAdded] = rawLastValue + content;
            }
          } else {
            commentBefore = commentBefore + content;
          }
          break;
        default:
          return this.error("Unexpected \"" + content + "\" found.", {
            index: token[_tokenize.FIELDS.START_POS]
          });
      }
      pos++;
    }
    unescapeProp(node, "attribute");
    unescapeProp(node, "namespace");
    this.newNode(new _attribute["default"](node));
    this.position++;
  }

/**
   * return a node containing meaningless garbage up to (but not including) the specified token position.
   * if the token position is negative, all remaining tokens are consumed.
   *
   * This returns an array containing a single string node if all whitespace,
   * otherwise an array of comment nodes with space before and after.
   *
   * These tokens are not added to the current selector, the caller can add them or use them to amend
   * a previous node's space metadata.
   *
   * In lossy mode, this returns only comments.
   */;
  _proto.parseWhitespaceEquivalentTokens = function parseWhitespaceEquivalentTokens(stopPosition) {
    if (stopPosition < 0) {
      stopPosition = this.tokens.length;
    }
    var startPosition = this.position;
    var nodes = [];
    var space = "";
    var lastComment = undefined;
    do {
      if (WHITESPACE_TOKENS[this.currToken[_tokenize.FIELDS.TYPE]]) {
        if (!this.options.lossy) {
          space += this.content();
        }
      } else if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.comment) {
        var spaces = {};
        if (space) {
          spaces.before = space;
          space = "";
        }
        lastComment = new _comment["default"]({
          value: this.content(),
          source: getTokenSource(this.currToken),
          sourceIndex: this.currToken[_tokenize.FIELDS.START_POS],
          spaces: spaces
        });
        nodes.push(lastComment);
      }
    } while (++this.position < stopPosition);
    if (space) {
      if (lastComment) {
        lastComment.spaces.after = space;
      } else if (!this.options.lossy) {
        var firstToken = this.tokens[startPosition];
        var lastToken = this.tokens[this.position - 1];
        nodes.push(new _string["default"]({
          value: '',
          source: getSource(firstToken[_tokenize.FIELDS.START_LINE], firstToken[_tokenize.FIELDS.START_COL], lastToken[_tokenize.FIELDS.END_LINE], lastToken[_tokenize.FIELDS.END_COL]),
          sourceIndex: firstToken[_tokenize.FIELDS.START_POS],
          spaces: {
            before: space,
            after: ''
          }
        }));
      }
    }
    return nodes;
  }

/**
   *
   * @param {*} nodes
   */;
  _proto.convertWhitespaceNodesToSpace = function convertWhitespaceNodesToSpace(nodes, requiredSpace) {
    var _this2 = this;
    if (requiredSpace === void 0) {
      requiredSpace = false;
    }
    var space = "";
    var rawSpace = "";
    nodes.forEach(function (n) {
      var spaceBefore = _this2.lossySpace(n.spaces.before, requiredSpace);
      var rawSpaceBefore = _this2.lossySpace(n.rawSpaceBefore, requiredSpace);
      space += spaceBefore + _this2.lossySpace(n.spaces.after, requiredSpace && spaceBefore.length === 0);
      rawSpace += spaceBefore + n.value + _this2.lossySpace(n.rawSpaceAfter, requiredSpace && rawSpaceBefore.length === 0);
    });
    if (rawSpace === space) {
      rawSpace = undefined;
    }
    var result = {
      space: space,
      rawSpace: rawSpace
    };
    return result;
  };
  _proto.isNamedCombinator = function isNamedCombinator(position) {
    if (position === void 0) {
      position = this.position;
    }
    return this.tokens[position + 0] && this.tokens[position + 0][_tokenize.FIELDS.TYPE] === tokens.slash && this.tokens[position + 1] && this.tokens[position + 1][_tokenize.FIELDS.TYPE] === tokens.word && this.tokens[position + 2] && this.tokens[position + 2][_tokenize.FIELDS.TYPE] === tokens.slash;
  };
  _proto.namedCombinator = function namedCombinator() {
    if (this.isNamedCombinator()) {
      var nameRaw = this.content(this.tokens[this.position + 1]);
      var name = (0, _util.unesc)(nameRaw).toLowerCase();
      var raws = {};
      if (name !== nameRaw) {
        raws.value = "/" + nameRaw + "/";
      }
      var node = new _combinator["default"]({
        value: "/" + name + "/",
        source: getSource(this.currToken[_tokenize.FIELDS.START_LINE], this.currToken[_tokenize.FIELDS.START_COL], this.tokens[this.position + 2][_tokenize.FIELDS.END_LINE], this.tokens[this.position + 2][_tokenize.FIELDS.END_COL]),
        sourceIndex: this.currToken[_tokenize.FIELDS.START_POS],
        raws: raws
      });
      this.position = this.position + 3;
      return node;
    } else {
      this.unexpected();
    }
  };
  _proto.combinator = function combinator() {
    var _this3 = this;
    if (this.content() === '|') {
      return this.namespace();
    }
    // We need to decide between a space that's a descendant combinator and meaningless whitespace at the end of a selector.
    var nextSigTokenPos = this.locateNextMeaningfulToken(this.position);
    if (nextSigTokenPos < 0 || this.tokens[nextSigTokenPos][_tokenize.FIELDS.TYPE] === tokens.comma || this.tokens[nextSigTokenPos][_tokenize.FIELDS.TYPE] === tokens.closeParenthesis) {
      var nodes = this.parseWhitespaceEquivalentTokens(nextSigTokenPos);
      if (nodes.length > 0) {
        var last = this.current.last;
        if (last) {
          var _this$convertWhitespa = this.convertWhitespaceNodesToSpace(nodes),
            space = _this$convertWhitespa.space,
            rawSpace = _this$convertWhitespa.rawSpace;
          if (rawSpace !== undefined) {
            last.rawSpaceAfter += rawSpace;
          }
          last.spaces.after += space;
        } else {
          nodes.forEach(function (n) {
            return _this3.newNode(n);
          });
        }
      }
      return;
    }
    var firstToken = this.currToken;
    var spaceOrDescendantSelectorNodes = undefined;
    if (nextSigTokenPos > this.position) {
      spaceOrDescendantSelectorNodes = this.parseWhitespaceEquivalentTokens(nextSigTokenPos);
    }
    var node;
    if (this.isNamedCombinator()) {
      node = this.namedCombinator();
    } else if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.combinator) {
      node = new _combinator["default"]({
        value: this.content(),
        source: getTokenSource(this.currToken),
        sourceIndex: this.currToken[_tokenize.FIELDS.START_POS]
      });
      this.position++;
    } else if (WHITESPACE_TOKENS[this.currToken[_tokenize.FIELDS.TYPE]]) {
      // pass
    } else if (!spaceOrDescendantSelectorNodes) {
      this.unexpected();
    }
    if (node) {
      if (spaceOrDescendantSelectorNodes) {
        var _this$convertWhitespa2 = this.convertWhitespaceNodesToSpace(spaceOrDescendantSelectorNodes),
          _space = _this$convertWhitespa2.space,
          _rawSpace = _this$convertWhitespa2.rawSpace;
        node.spaces.before = _space;
        node.rawSpaceBefore = _rawSpace;
      }
    } else {
      // descendant combinator
      var _this$convertWhitespa3 = this.convertWhitespaceNodesToSpace(spaceOrDescendantSelectorNodes, true),
        _space2 = _this$convertWhitespa3.space,
        _rawSpace2 = _this$convertWhitespa3.rawSpace;
      if (!_rawSpace2) {
        _rawSpace2 = _space2;
      }
      var spaces = {};
      var raws = {
        spaces: {}
      };
      if (_space2.endsWith(' ') && _rawSpace2.endsWith(' ')) {
        spaces.before = _space2.slice(0, _space2.length - 1);
        raws.spaces.before = _rawSpace2.slice(0, _rawSpace2.length - 1);
      } else if (_space2.startsWith(' ') && _rawSpace2.startsWith(' ')) {
        spaces.after = _space2.slice(1);
        raws.spaces.after = _rawSpace2.slice(1);
      } else {
        raws.value = _rawSpace2;
      }
      node = new _combinator["default"]({
        value: ' ',
        source: getTokenSourceSpan(firstToken, this.tokens[this.position - 1]),
        sourceIndex: firstToken[_tokenize.FIELDS.START_POS],
        spaces: spaces,
        raws: raws
      });
    }
    if (this.currToken && this.currToken[_tokenize.FIELDS.TYPE] === tokens.space) {
      node.spaces.after = this.optionalSpace(this.content());
      this.position++;
    }
    return this.newNode(node);
  };
  _proto.comma = function comma() {
    if (this.position === this.tokens.length - 1) {
      this.root.trailingComma = true;
      this.position++;
      return;
    }
    this.current._inferEndPosition();
    var selector = new _selector["default"]({
      source: {
        start: tokenStart(this.tokens[this.position + 1])
      },
      sourceIndex: this.tokens[this.position + 1][_tokenize.FIELDS.START_POS]
    });
    this.current.parent.append(selector);
    this.current = selector;
    this.position++;
  };
  _proto.comment = function comment() {
    var current = this.currToken;
    this.newNode(new _comment["default"]({
      value: this.content(),
      source: getTokenSource(current),
      sourceIndex: current[_tokenize.FIELDS.START_POS]
    }));
    this.position++;
  };
  _proto.error = function error(message, opts) {
    throw this.root.error(message, opts);
  };
  _proto.missingBackslash = function missingBackslash() {
    return this.error('Expected a backslash preceding the semicolon.', {
      index: this.currToken[_tokenize.FIELDS.START_POS]
    });
  };
  _proto.missingParenthesis = function missingParenthesis() {
    return this.expected('opening parenthesis', this.currToken[_tokenize.FIELDS.START_POS]);
  };
  _proto.missingSquareBracket = function missingSquareBracket() {
    return this.expected('opening square bracket', this.currToken[_tokenize.FIELDS.START_POS]);
  };
  _proto.unexpected = function unexpected() {
    return this.error("Unexpected '" + this.content() + "'. Escaping special characters with \\ may help.", this.currToken[_tokenize.FIELDS.START_POS]);
  };
  _proto.unexpectedPipe = function unexpectedPipe() {
    return this.error("Unexpected '|'.", this.currToken[_tokenize.FIELDS.START_POS]);
  };
  _proto.namespace = function namespace() {
    var before = this.prevToken && this.content(this.prevToken) || true;
    if (this.nextToken[_tokenize.FIELDS.TYPE] === tokens.word) {
      this.position++;
      return this.word(before);
    } else if (this.nextToken[_tokenize.FIELDS.TYPE] === tokens.asterisk) {
      this.position++;
      return this.universal(before);
    }
    this.unexpectedPipe();
  };
  _proto.nesting = function nesting() {
    if (this.nextToken) {
      var nextContent = this.content(this.nextToken);
      if (nextContent === "|") {
        this.position++;
        return;
      }
    }
    var current = this.currToken;
    this.newNode(new _nesting["default"]({
      value: this.content(),
      source: getTokenSource(current),
      sourceIndex: current[_tokenize.FIELDS.START_POS]
    }));
    this.position++;
  };
  _proto.parentheses = function parentheses() {
    var last = this.current.last;
    var unbalanced = 1;
    this.position++;
    if (last && last.type === types.PSEUDO) {
      var selector = new _selector["default"]({
        source: {
          start: tokenStart(this.tokens[this.position])
        },
        sourceIndex: this.tokens[this.position][_tokenize.FIELDS.START_POS]
      });
      var cache = this.current;
      last.append(selector);
      this.current = selector;
      while (this.position < this.tokens.length && unbalanced) {
        if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.openParenthesis) {
          unbalanced++;
        }
        if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.closeParenthesis) {
          unbalanced--;
        }
        if (unbalanced) {
          this.parse();
        } else {
          this.current.source.end = tokenEnd(this.currToken);
          this.current.parent.source.end = tokenEnd(this.currToken);
          this.position++;
        }
      }
      this.current = cache;
    } else {
      // I think this case should be an error. It's used to implement a basic parse of media queries
      // but I don't think it's a good idea.
      var parenStart = this.currToken;
      var parenValue = "(";
      var parenEnd;
      while (this.position < this.tokens.length && unbalanced) {
        if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.openParenthesis) {
          unbalanced++;
        }
        if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.closeParenthesis) {
          unbalanced--;
        }
        parenEnd = this.currToken;
        parenValue += this.parseParenthesisToken(this.currToken);
        this.position++;
      }
      if (last) {
        last.appendToPropertyAndEscape("value", parenValue, parenValue);
      } else {
        this.newNode(new _string["default"]({
          value: parenValue,
          source: getSource(parenStart[_tokenize.FIELDS.START_LINE], parenStart[_tokenize.FIELDS.START_COL], parenEnd[_tokenize.FIELDS.END_LINE], parenEnd[_tokenize.FIELDS.END_COL]),
          sourceIndex: parenStart[_tokenize.FIELDS.START_POS]
        }));
      }
    }
    if (unbalanced) {
      return this.expected('closing parenthesis', this.currToken[_tokenize.FIELDS.START_POS]);
    }
  };
  _proto.pseudo = function pseudo() {
    var _this4 = this;
    var pseudoStr = '';
    var startingToken = this.currToken;
    while (this.currToken && this.currToken[_tokenize.FIELDS.TYPE] === tokens.colon) {
      pseudoStr += this.content();
      this.position++;
    }
    if (!this.currToken) {
      return this.expected(['pseudo-class', 'pseudo-element'], this.position - 1);
    }
    if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.word) {
      this.splitWord(false, function (first, length) {
        pseudoStr += first;
        _this4.newNode(new _pseudo["default"]({
          value: pseudoStr,
          source: getTokenSourceSpan(startingToken, _this4.currToken),
          sourceIndex: startingToken[_tokenize.FIELDS.START_POS]
        }));
        if (length > 1 && _this4.nextToken && _this4.nextToken[_tokenize.FIELDS.TYPE] === tokens.openParenthesis) {
          _this4.error('Misplaced parenthesis.', {
            index: _this4.nextToken[_tokenize.FIELDS.START_POS]
          });
        }
      });
    } else {
      return this.expected(['pseudo-class', 'pseudo-element'], this.currToken[_tokenize.FIELDS.START_POS]);
    }
  };
  _proto.space = function space() {
    var content = this.content();
    // Handle space before and after the selector
    if (this.position === 0 || this.prevToken[_tokenize.FIELDS.TYPE] === tokens.comma || this.prevToken[_tokenize.FIELDS.TYPE] === tokens.openParenthesis || this.current.nodes.every(function (node) {
      return node.type === 'comment';
    })) {
      this.spaces = this.optionalSpace(content);
      this.position++;
    } else if (this.position === this.tokens.length - 1 || this.nextToken[_tokenize.FIELDS.TYPE] === tokens.comma || this.nextToken[_tokenize.FIELDS.TYPE] === tokens.closeParenthesis) {
      this.current.last.spaces.after = this.optionalSpace(content);
      this.position++;
    } else {
      this.combinator();
    }
  };
  _proto.string = function string() {
    var current = this.currToken;
    this.newNode(new _string["default"]({
      value: this.content(),
      source: getTokenSource(current),
      sourceIndex: current[_tokenize.FIELDS.START_POS]
    }));
    this.position++;
  };
  _proto.universal = function universal(namespace) {
    var nextToken = this.nextToken;
    if (nextToken && this.content(nextToken) === '|') {
      this.position++;
      return this.namespace();
    }
    var current = this.currToken;
    this.newNode(new _universal["default"]({
      value: this.content(),
      source: getTokenSource(current),
      sourceIndex: current[_tokenize.FIELDS.START_POS]
    }), namespace);
    this.position++;
  };
  _proto.splitWord = function splitWord(namespace, firstCallback) {
    var _this5 = this;
    var nextToken = this.nextToken;
    var word = this.content();
    while (nextToken && ~[tokens.dollar, tokens.caret, tokens.equals, tokens.word].indexOf(nextToken[_tokenize.FIELDS.TYPE])) {
      this.position++;
      var current = this.content();
      word += current;
      if (current.lastIndexOf('\\') === current.length - 1) {
        var next = this.nextToken;
        if (next && next[_tokenize.FIELDS.TYPE] === tokens.space) {
          word += this.requiredSpace(this.content(next));
          this.position++;
        }
      }
      nextToken = this.nextToken;
    }
    var hasClass = indexesOf(word, '.').filter(function (i) {
      // Allow escaped dot within class name
      var escapedDot = word[i - 1] === '\\';
      // Allow decimal numbers percent in @keyframes
      var isKeyframesPercent = /^\d+\.\d+%$/.test(word);
      return !escapedDot && !isKeyframesPercent;
    });
    var hasId = indexesOf(word, '#').filter(function (i) {
      return word[i - 1] !== '\\';
    });
    // Eliminate Sass interpolations from the list of id indexes
    var interpolations = indexesOf(word, '#{');
    if (interpolations.length) {
      hasId = hasId.filter(function (hashIndex) {
        return !~interpolations.indexOf(hashIndex);
      });
    }
    var indices = (0, _sortAscending["default"])(uniqs([0].concat(hasClass, hasId)));
    indices.forEach(function (ind, i) {
      var index = indices[i + 1] || word.length;
      var value = word.slice(ind, index);
      if (i === 0 && firstCallback) {
        return firstCallback.call(_this5, value, indices.length);
      }
      var node;
      var current = _this5.currToken;
      var sourceIndex = current[_tokenize.FIELDS.START_POS] + indices[i];
      var source = getSource(current[1], current[2] + ind, current[3], current[2] + (index - 1));
      if (~hasClass.indexOf(ind)) {
        var classNameOpts = {
          value: value.slice(1),
          source: source,
          sourceIndex: sourceIndex
        };
        node = new _className["default"](unescapeProp(classNameOpts, "value"));
      } else if (~hasId.indexOf(ind)) {
        var idOpts = {
          value: value.slice(1),
          source: source,
          sourceIndex: sourceIndex
        };
        node = new _id["default"](unescapeProp(idOpts, "value"));
      } else {
        var tagOpts = {
          value: value,
          source: source,
          sourceIndex: sourceIndex
        };
        unescapeProp(tagOpts, "value");
        node = new _tag["default"](tagOpts);
      }
      _this5.newNode(node, namespace);
      // Ensure that the namespace is used only once
      namespace = null;
    });
    this.position++;
  };
  _proto.word = function word(namespace) {
    var nextToken = this.nextToken;
    if (nextToken && this.content(nextToken) === '|') {
      this.position++;
      return this.namespace();
    }
    return this.splitWord(namespace);
  };
  _proto.loop = function loop() {
    while (this.position < this.tokens.length) {
      this.parse(true);
    }
    this.current._inferEndPosition();
    return this.root;
  };
  _proto.parse = function parse(throwOnParenthesis) {
    switch (this.currToken[_tokenize.FIELDS.TYPE]) {
      case tokens.space:
        this.space();
        break;
      case tokens.comment:
        this.comment();
        break;
      case tokens.openParenthesis:
        this.parentheses();
        break;
      case tokens.closeParenthesis:
        if (throwOnParenthesis) {
          this.missingParenthesis();
        }
        break;
      case tokens.openSquare:
        this.attribute();
        break;
      case tokens.dollar:
      case tokens.caret:
      case tokens.equals:
      case tokens.word:
        this.word();
        break;
      case tokens.colon:
        this.pseudo();
        break;
      case tokens.comma:
        this.comma();
        break;
      case tokens.asterisk:
        this.universal();
        break;
      case tokens.ampersand:
        this.nesting();
        break;
      case tokens.slash:
      case tokens.combinator:
        this.combinator();
        break;
      case tokens.str:
        this.string();
        break;
      // These cases throw; no break needed.
      case tokens.closeSquare:
        this.missingSquareBracket();
      case tokens.semicolon:
        this.missingBackslash();
      default:
        this.unexpected();
    }
  }

/**
   * Helpers
   */;
  _proto.expected = function expected(description, index, found) {
    if (Array.isArray(description)) {
      var last = description.pop();
      description = description.join(', ') + " or " + last;
    }
    var an = /^[aeiou]/.test(description[0]) ? 'an' : 'a';
    if (!found) {
      return this.error("Expected " + an + " " + description + ".", {
        index: index
      });
    }
    return this.error("Expected " + an + " " + description + ", found \"" + found + "\" instead.", {
      index: index
    });
  };
  _proto.requiredSpace = function requiredSpace(space) {
    return this.options.lossy ? ' ' : space;
  };
  _proto.optionalSpace = function optionalSpace(space) {
    return this.options.lossy ? '' : space;
  };
  _proto.lossySpace = function lossySpace(space, required) {
    if (this.options.lossy) {
      return required ? ' ' : '';
    } else {
      return space;
    }
  };
  _proto.parseParenthesisToken = function parseParenthesisToken(token) {
    var content = this.content(token);
    if (token[_tokenize.FIELDS.TYPE] === tokens.space) {
      return this.requiredSpace(content);
    } else {
      return content;
    }
  };
  _proto.newNode = function newNode(node, namespace) {
    if (namespace) {
      if (/^ +$/.test(namespace)) {
        if (!this.options.lossy) {
          this.spaces = (this.spaces || '') + namespace;
        }
        namespace = true;
      }
      node.namespace = namespace;
      unescapeProp(node, "namespace");
    }
    if (this.spaces) {
      node.spaces.before = this.spaces;
      this.spaces = '';
    }
    return this.current.append(node);
  };
  _proto.content = function content(token) {
    if (token === void 0) {
      token = this.currToken;
    }
    return this.css.slice(token[_tokenize.FIELDS.START_POS], token[_tokenize.FIELDS.END_POS]);
  };
  /**
   * returns the index of the next non-whitespace, non-comment token.
   * returns -1 if no meaningful token is found.
   */
  _proto.locateNextMeaningfulToken = function locateNextMeaningfulToken(startPosition) {
    if (startPosition === void 0) {
      startPosition = this.position + 1;
    }
    var searchPosition = startPosition;
    while (searchPosition < this.tokens.length) {
      if (WHITESPACE_EQUIV_TOKENS[this.tokens[searchPosition][_tokenize.FIELDS.TYPE]]) {
        searchPosition++;
        continue;
      } else {
        return searchPosition;
      }
    }
    return -1;
  };
  _createClass(Parser, [{
    key: "currToken",
    get: function get() {
      return this.tokens[this.position];
    }
  }, {
    key: "nextToken",
    get: function get() {
      return this.tokens[this.position + 1];
    }
  }, {
    key: "prevToken",
    get: function get() {
      return this.tokens[this.position - 1];
    }
  }]);
  return Parser;
}();
exports["default"] = Parser;
module.exports = exports.default;

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2026-03-14 07:01:28
..	dir	-	root/root	0755	2026-03-14 07:01:28
selectors	dir	-	root/root	0755	2026-03-14 07:01:28
util	dir	-	root/root	0755	2026-03-14 07:01:28
index.js	text/plain	1.64 KB	root/root	0644	2026-02-23 06:53:59
parser.js	text/plain	38.17 KB	root/root	0644	2026-02-23 06:53:59
processor.js	text/plain	5.09 KB	root/root	0644	2026-02-23 06:53:59
sortAscending.js	text/plain	207 B	root/root	0644	2026-02-23 06:53:59
tokenTypes.js	text/plain	2.63 KB	root/root	0644	2026-02-23 06:53:59
tokenize.js	text/plain	8.25 KB	root/root	0644	2026-02-23 06:53:59

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