import type { Node } from 'web-tree-sitter';
import type { ExecutableDirectiveLocationNode } from './executable_directive_location.js';
import type { TypeSystemDirectiveLocationNode } from './type_system_directive_location.js';
const TYPE = 'directive_location' as const;



// ================================================================
// ================================================================
//
//                           DirectiveLocationNode
//
//        GraphQL directive location node
//
// ================================================================
// ================================================================


/**
 * Represents a directive location in the GraphQL AST.
 * 
 * Children:
 *   {@link ExecutableDirectiveLocationNode}, {@link TypeSystemDirectiveLocationNode}
 * 
 */
export interface DirectiveLocationNode extends Node {
  type: typeof TYPE;
}


// ================================================================
// ================================================================
//
//                           Type Guard
//
// ================================================================
// ================================================================


/**
 * Type guard to check if a node is a {@link DirectiveLocationNode}.
 * 
 * @param node - The node to check
 * @returns True if the node is a {@link DirectiveLocationNode}
 * 
 * @example
 * ```typescript
 * if (isDirectiveLocationNode(node)) {
 *   // TypeScript now knows node is DirectiveLocationNode
 *   console.log(node.type); // 'directive_location'
 * }
 * ```
 */
export function isDirectiveLocationNode(node: unknown): node is DirectiveLocationNode {
  return (node as any)?.type === TYPE;
}


// ================================================================
// ================================================================
//
//                           Constructor
//
// ================================================================
// ================================================================


/**
 * Creates a new {@link DirectiveLocationNode} with the specified properties.
 * 
 * @param props - The node properties
 * @param props.executabledirectivelocation - {@link ExecutableDirectiveLocationNode}
 * @param props.typesystemdirectivelocation - {@link TypeSystemDirectiveLocationNode}
 * @returns A new {@link DirectiveLocationNode}
 * 
 * @example
 * ```typescript
 * const node = DirectiveLocationNode({
 *   // properties...
 * });
 * ```
 */
export function DirectiveLocationNode(props: Omit<DirectiveLocationNode, 'type'>): DirectiveLocationNode {
  return {
    type: TYPE,
    ...props
  };
}