Method parseAssignableExpression

www/js/_hyperscript.esm.js:1444–1458

(parser)

    return parser.parseAnyOf(this.#topExpressions);
  }
  parseAssignableExpression(parser) {
    parser.matchToken("the");
    var expr = parser.parseElement("primaryExpression");
    var checkExpr = expr;
    while (checkExpr && checkExpr.type === "parenthesized") {
      checkExpr = checkExpr.expr;
    }
    if (checkExpr && this.#assignableExpressions.includes(checkExpr.type)) {
      return expr;
    } else {
      parser.raiseError(
        "A target expression must be writable.  The expression type '" + (checkExpr && checkExpr.type) + "' is not."
      );
    }
  }
  parseIndirectStatement(parser, root) {
    if (parser.matchToken("unless")) {
      root.endToken = parser.lastMatch();