Method scanString

packages/compiler/src/expression_parser/lexer.ts:507–535

()

  }

  private scanString(): Token {
    const start = this.index;
    const quote = this.peek;
    this.advance(); // Skip initial quote.

    let buffer = '';
    let marker = this.index;
    const input = this.input;

    while (this.peek != quote) {
      if (this.peek == chars.$BACKSLASH) {
        const result = this.scanStringBackslash(buffer, marker);
        if (typeof result !== 'string') {
          return result; // Error
        }
        buffer = result;
        marker = this.index;
      } else if (this.peek == chars.$EOF) {
        return this.error('Unterminated quote', 0);
      } else {
        this.advance();
      }
    }

    const last: string = input.substring(marker, this.index);
    this.advance(); // Skip terminating quote.

    return new StringToken(start, this.index, buffer + last, StringTokenKind.Plain);
  }

  private scanQuestion(start: number): Token {
    this.advance();