private binary()

in client/src/lang/parser.ts [49:89]
38 lines of code
8 McCabe index (conditional complexity)

  private binary(isNested: boolean = false): CqlBinary {
    if (this.peek().tokenType === TokenType.CHIP_VALUE)
      throw new ParseError(
        this.peek().start,
        "I found an unexpected `:`. Did you intend to search for a field, e.g. `tag:news`? If you would like to add a search phrase containing a `:` character, please surround it in double quotes."
      );

    const left = this.expr();

    if (isNested) {
      this.guardAgainstCqlField("within a group");
    }
    const tokenType = this.peek().tokenType;

    switch (tokenType) {
      case TokenType.OR:
      case TokenType.AND: {
        this.consume(tokenType);
        this.guardAgainstCqlField(`after \`${tokenType}\`.`);
        if (this.isAtEnd()) {
          throw this.error(
            `There must be a query following \`${tokenType}\`, e.g. \`this ${tokenType} that\`.`
          );
        }
        return new CqlBinary(left, {
          operator: tokenType,
          binary: this.binary(isNested),
        });
      }
      case TokenType.RIGHT_BRACKET:
      case TokenType.EOF: {
        return new CqlBinary(left);
      }
      default: {
        return new CqlBinary(left, {
          operator: TokenType.OR,
          binary: this.binary(isNested),
        });
      }
    }
  }