/**
 * @license
 * Copyright (c) 2016 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt The complete set of authors may be found
 * at http://polymer.github.io/AUTHORS.txt The complete set of contributors may
 * be found at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by
 * Google as part of the polymer project is also subject to an additional IP
 * rights grant found at http://polymer.github.io/PATENTS.txt
 */
import { AtRule, Comment, Declaration, Discarded, Rule, Rulelist, Ruleset, Stylesheet } from './common';
import { NodeFactory } from './node-factory';
import { Tokenizer } from './tokenizer';
/**
 * Class that implements a shady CSS parser.
 */
declare class Parser {
    nodeFactory: NodeFactory;
    /**
     * Create a Parser instance. When creating a Parser instance, a specialized
     * NodeFactory can be supplied to implement streaming analysis and
     * manipulation of the CSS AST.
     */
    constructor(nodeFactory?: NodeFactory);
    /**
     * Parse CSS and generate an AST.
     * @param cssText The CSS to parse.
     * @return A CSS AST containing nodes that correspond to those
     *     generated by the Parser's NodeFactory.
     */
    parse(cssText: string): Stylesheet;
    /**
     * Consumes tokens from a Tokenizer to parse a Stylesheet node.
     * @param tokenizer A Tokenizer instance.
     */
    parseStylesheet(tokenizer: Tokenizer): Stylesheet;
    /**
     * Consumes tokens from a Tokenizer to parse a sequence of rules.
     * @param tokenizer A Tokenizer instance.
     * @return A list of nodes corresponding to rules. For a parser
     *   configured with a basic NodeFactory, any of Comment, AtRule, Ruleset,
     *   Declaration and Discarded nodes may be present in the list.
     */
    parseRules(tokenizer: Tokenizer): Rule[];
    /**
     * Consumes tokens from a Tokenizer to parse a single rule.
     * @param tokenizer A Tokenizer instance.
     * @return If the current token in the Tokenizer is whitespace,
     *   returns null. Otherwise, returns the next parseable node.
     */
    parseRule(tokenizer: Tokenizer): Rule | null;
    /**
     * Consumes tokens from a Tokenizer to parse a Comment node.
     * @param tokenizer A Tokenizer instance.
     */
    parseComment(tokenizer: Tokenizer): Comment | null;
    /**
     * Consumes tokens from a Tokenizer through the next boundary token to
     * produce a Discarded node. This supports graceful recovery from many
     * malformed CSS conditions.
     * @param tokenizer A Tokenizer instance.
     */
    parseUnknown(tokenizer: Tokenizer): Discarded | null;
    /**
     * Consumes tokens from a Tokenizer to parse an At Rule node.
     * @param tokenizer A Tokenizer instance.
     */
    parseAtRule(tokenizer: Tokenizer): AtRule | null;
    /**
     * Consumes tokens from a Tokenizer to produce a Rulelist node.
     * @param tokenizer A Tokenizer instance.
     */
    parseRulelist(tokenizer: Tokenizer): Rulelist;
    /**
     * Consumes tokens from a Tokenizer instance to produce a Declaration node or
     * a Ruleset node, as appropriate.
     * @param tokenizer A Tokenizer node.
     */
    parseDeclarationOrRuleset(tokenizer: Tokenizer): Declaration | Ruleset | null;
}
export { Parser };