/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

export type ASTNode =
  | ObjectASTNode
  | PropertyASTNode
  | ArrayASTNode
  | StringASTNode
  | NumberASTNode
  | BooleanASTNode
  | NullASTNode;

export interface BaseASTNode {
  readonly type:
    | 'object'
    | 'array'
    | 'property'
    | 'string'
    | 'number'
    | 'boolean'
    | 'null';
  readonly parent?: ASTNode;
  readonly offset: number;
  readonly length: number;
  readonly children?: ASTNode[];
  readonly value?: string | boolean | number | null;
}
export interface ObjectASTNode extends BaseASTNode {
  readonly type: 'object';
  readonly properties: PropertyASTNode[];
  readonly children: ASTNode[];
}
export interface PropertyASTNode extends BaseASTNode {
  readonly type: 'property';
  readonly keyNode: StringASTNode;
  readonly valueNode?: ASTNode;
  readonly colonOffset?: number;
  readonly children: ASTNode[];
}
export interface ArrayASTNode extends BaseASTNode {
  readonly type: 'array';
  readonly items: ASTNode[];
  readonly children: ASTNode[];
}
export interface StringASTNode extends BaseASTNode {
  readonly type: 'string';
  readonly value: string;
}
export interface NumberASTNode extends BaseASTNode {
  readonly type: 'number';
  readonly value: number;
  readonly isInteger: boolean;
}
export interface BooleanASTNode extends BaseASTNode {
  readonly type: 'boolean';
  readonly value: boolean;
}
export interface NullASTNode extends BaseASTNode {
  readonly type: 'null';
  readonly value: null;
}