railt/graphql

/**
 * --------------------------------------------------------------------------
 *  GraphQL SDL Arguments
 * --------------------------------------------------------------------------
 *
 * Fields are conceptually functions which return values, and occasionally
 * accept arguments which alter their behavior. These arguments often map
 * directly to function arguments within a GraphQL server’s implementation.
 *
 * @see https://graphql.github.io/graphql-spec/June2018/#sec-Field-Arguments
 *
 */

ArgumentDefinition -> {
    return new Stmt\ArgumentNode(
        $children[1],
        $children[0],
        $children[2],
        $children[3] instanceof \ArrayObject ? null : $children[3],
        \end($children)->getArrayCopy(),
    );
}
  : Description()
    Identifier() ::T_COLON:: Type()
    (::T_EQUAL:: Expression())?
    Directives() ::T_COMMA::?
  ;