Class CSSParser

engine/cssparser.js:150–355

}

export class CSSParser {
  static {
    this.prototype.mainState = MainState.None;
    this.prototype.stringState = StringState.None;
    this.prototype.atState = AtState.None;
    this.prototype.escaping = false;
  
    this.prototype.currentSelector = '';

    this.prototype.currentRule = null;
    this.prototype.parentRule = null;
  
    this.prototype.currentProp = '';
    this.prototype.currentValue = '';
  
    this.prototype.currentAtName = '';
    this.prototype.currentAtCond = '';
  }

  rules = [];

  constructor(bailing = true) {
    if (bailing) {
      const _parse = this.parse.bind(this);
      this.parse = (...args) => {
        try {
          return _parse(...args);
        } catch (e) {
          console.warn('CSSParser bailed', e);
          return [];
        }
      };
    }
  }

  parse(input) {
    const checkToken = (a, b) => !this.escaping && this.stringState === StringState.None && a === b;

    const checkSES = c => {
      if (this.escaping) {
        return false;
      }

      if (c != '"' && c != '\'') {
        return false;
      }

      const state = c == '"' ? StringState.Double : StringState.Single;

      // start
      if (this.stringState == StringState.None) {
        this.stringState = state;
        return true;
      }

      // end
      if (this.stringState == state) {
        this.stringState = StringState.None;