/**
 * Copyright 2017 Matt Acosta
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { ISourceTextSyntaxNode } from './SourceTextSyntaxNode';
import { ISyntaxNode, ISyntaxNodeOrList } from './ISyntaxNode';
import { ISyntaxToken, SyntaxTokenFilter } from './ISyntaxToken';
/**
 * Provides helper methods for working with `ISyntaxNode` objects.
 */
export declare class SyntaxNodeExtensions {
    /**
     * Determines if the given object is shaped like `ISourceTextSyntaxNode`.
     */
    static isSourceTextSyntaxNode(node: object): node is ISourceTextSyntaxNode;
    /**
     * Attempts to get the first token within the given node.
     *
     * @param {ISyntaxNodeOrList} node
     *   The parent node.
     * @param {SyntaxTokenFilter=} tokenFilter
     *   A callback used to limit what tokens are returned.
     */
    static tryGetFirstToken(node: ISyntaxNodeOrList, tokenFilter?: SyntaxTokenFilter): ISyntaxToken | null;
    /**
     * Attempts to get the last token within the given node.
     *
     * @param {ISyntaxNodeOrList} node
     *   The parent node.
     * @param {SyntaxTokenFilter=} tokenFilter
     *   A callback used to limit what tokens are returned.
     */
    static tryGetLastToken(node: ISyntaxNodeOrList, tokenFilter?: SyntaxTokenFilter): ISyntaxToken | null;
    /**
     * Attempts to get the first token within the next node.
     *
     * So if parent node `A` has two children `B` and `C`, and the given node
     * is `B`, then this method will return the first token within `C`.
     *
     * @param {ISyntaxNode} node
     *   The current node.
     * @param {SyntaxTokenFilter=} tokenFilter
     *   A callback used to limit what tokens are returned.
     */
    static tryGetNextToken(node: ISyntaxNode, tokenFilter?: SyntaxTokenFilter): ISyntaxToken | null;
    /**
     * Attempts to get the last token within the previous node.
     *
     * So if parent node `A` has two children `B` and `C`, and the given node
     * is `C`, then this method will return the last token within `B`.
     *
     * @param {ISyntaxNode} node
     *   The current node.
     * @param {SyntaxTokenFilter=} tokenFilter
     *   A callback used to limit what tokens are returned.
     */
    static tryGetPreviousToken(node: ISyntaxNode, tokenFilter?: SyntaxTokenFilter): ISyntaxToken | null;
}