/**
 * 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 { DocumentationMode } from './DocumentationMode';
import { PhpVersion } from './PhpVersion';
/**
 * A set of options for parsing PHP source code.
 */
export declare class PhpParserOptions {
    /**
     * A default set of parsing options.
     */
    static readonly Default: PhpParserOptions;
    /**
     * Determines if a diagnostic should be generated when parsing a function with
     * a reserved name.
     */
    readonly allowReservedNames: boolean;
    /**
     * Determines if the lexer should scan text as if PHP were aware of UTF-16
     * encoded characters. Defaults to `false`.
     */
    readonly allowUtf16: boolean;
    /**
     * Determines how the parser should handle documentation comments.
     */
    readonly documentationMode: DocumentationMode;
    /**
     * Determines if the lexer should scan numbers as if PHP were compiled with
     * 64-bit support.
     */
    readonly is64Bit: boolean;
    /**
     * The version of PHP containing the desired parsing rules.
     */
    readonly version: PhpVersion;
    /**
     * Constructs a `PhpParserOptions` object.
     *
     * @param {PhpVersion=} version
     *   The version of PHP containing the desired parsing rules. Defaults to
     *   `PhpVersion.Latest`.
     * @param {DocumentationMode=} documentationMode
     *   Determines how the parser should handle documentation comments. Defaults
     *   to `DocumentationMode.None`.
     * @param {boolean=} is64Bit
     *   Determines if the lexer should scan numbers as if PHP was compiled with
     *   64-bit support. Defaults to `true`.
     * @param {boolean=} allowReservedNames
     *   Determines if a diagnostic should be generated when parsing a function
     *   with a reserved name. Defaults to `false`.
     * @param {boolean=} allowUtf16
     *   Determines if the lexer should scan text as if PHP were aware of UTF-16
     *   encoded characters. Defaults to `false`.
     */
    constructor(version?: PhpVersion, documentationMode?: DocumentationMode, is64Bit?: boolean, allowReservedNames?: boolean, allowUtf16?: boolean);
    /**
     * Creates a set of parsing options from an object with similar properties.
     */
    static from(obj: Partial<PhpParserOptions>): PhpParserOptions;
}