/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 * @param {?=} rawParams
 * @return {?}
 */
function paramParser(rawParams) {
    if (rawParams === void 0) { rawParams = ''; }
    var /** @type {?} */ map = new Map();
    if (rawParams.length > 0) {
        var /** @type {?} */ params = rawParams.split('&');
        params.forEach(function (param) {
            var /** @type {?} */ eqIdx = param.indexOf('=');
            var _a = eqIdx == -1 ? [param, ''] : [param.slice(0, eqIdx), param.slice(eqIdx + 1)], key = _a[0], val = _a[1];
            var /** @type {?} */ list = map.get(key) || [];
            list.push(val);
            map.set(key, list);
        });
    }
    return map;
}
/**
 * \@experimental
 *
 */
export var QueryEncoder = (function () {
    function QueryEncoder() {
    }
    /**
     * @param {?} k
     * @return {?}
     */
    QueryEncoder.prototype.encodeKey = function (k) { return standardEncoding(k); };
    /**
     * @param {?} v
     * @return {?}
     */
    QueryEncoder.prototype.encodeValue = function (v) { return standardEncoding(v); };
    return QueryEncoder;
}());
/**
 * @param {?} v
 * @return {?}
 */
function standardEncoding(v) {
    return encodeURIComponent(v)
        .replace(/%40/gi, '@')
        .replace(/%3A/gi, ':')
        .replace(/%24/gi, '$')
        .replace(/%2C/gi, ',')
        .replace(/%3B/gi, ';')
        .replace(/%2B/gi, '+')
        .replace(/%3D/gi, '=')
        .replace(/%3F/gi, '?')
        .replace(/%2F/gi, '/');
}
/**
 * Map-like representation of url search parameters, based on
 * [URLSearchParams](https://url.spec.whatwg.org/#urlsearchparams) in the url living standard,
 * with several extensions for merging URLSearchParams objects:
 *   - setAll()
 *   - appendAll()
 *   - replaceAll()
 *
 * This class accepts an optional second parameter of ${\@link QueryEncoder},
 * which is used to serialize parameters before making a request. By default,
 * `QueryEncoder` encodes keys and values of parameters using `encodeURIComponent`,
 * and then un-encodes certain characters that are allowed to be part of the query
 * according to IETF RFC 3986: https://tools.ietf.org/html/rfc3986.
 *
 * These are the characters that are not encoded: `! $ \' ( ) * + , ; A 9 - . _ ~ ? /`
 *
 * If the set of allowed query characters is not acceptable for a particular backend,
 * `QueryEncoder` can be subclassed and provided as the 2nd argument to URLSearchParams.
 *
 * ```
 * import {URLSearchParams, QueryEncoder} from '\@angular/http';
 * class MyQueryEncoder extends QueryEncoder {
 *   encodeKey(k: string): string {
 *     return myEncodingFunction(k);
 *   }
 *
 *   encodeValue(v: string): string {
 *     return myEncodingFunction(v);
 *   }
 * }
 *
 * let params = new URLSearchParams('', new MyQueryEncoder());
 * ```
 * \@experimental
 */
export var URLSearchParams = (function () {
    /**
     * @param {?=} rawParams
     * @param {?=} queryEncoder
     */
    function URLSearchParams(rawParams, queryEncoder) {
        if (rawParams === void 0) { rawParams = ''; }
        if (queryEncoder === void 0) { queryEncoder = new QueryEncoder(); }
        this.rawParams = rawParams;
        this.queryEncoder = queryEncoder;
        this.paramsMap = paramParser(rawParams);
    }
    /**
     * @return {?}
     */
    URLSearchParams.prototype.clone = function () {
        var /** @type {?} */ clone = new URLSearchParams('', this.queryEncoder);
        clone.appendAll(this);
        return clone;
    };
    /**
     * @param {?} param
     * @return {?}
     */
    URLSearchParams.prototype.has = function (param) { return this.paramsMap.has(param); };
    /**
     * @param {?} param
     * @return {?}
     */
    URLSearchParams.prototype.get = function (param) {
        var /** @type {?} */ storedParam = this.paramsMap.get(param);
        return Array.isArray(storedParam) ? storedParam[0] : null;
    };
    /**
     * @param {?} param
     * @return {?}
     */
    URLSearchParams.prototype.getAll = function (param) { return this.paramsMap.get(param) || []; };
    /**
     * @param {?} param
     * @param {?} val
     * @return {?}
     */
    URLSearchParams.prototype.set = function (param, val) {
        if (val === void 0 || val === null) {
            this.delete(param);
            return;
        }
        var /** @type {?} */ list = this.paramsMap.get(param) || [];
        list.length = 0;
        list.push(val);
        this.paramsMap.set(param, list);
    };
    /**
     * @param {?} searchParams
     * @return {?}
     */
    URLSearchParams.prototype.setAll = function (searchParams) {
        var _this = this;
        searchParams.paramsMap.forEach(function (value, param) {
            var /** @type {?} */ list = _this.paramsMap.get(param) || [];
            list.length = 0;
            list.push(value[0]);
            _this.paramsMap.set(param, list);
        });
    };
    /**
     * @param {?} param
     * @param {?} val
     * @return {?}
     */
    URLSearchParams.prototype.append = function (param, val) {
        if (val === void 0 || val === null)
            return;
        var /** @type {?} */ list = this.paramsMap.get(param) || [];
        list.push(val);
        this.paramsMap.set(param, list);
    };
    /**
     * @param {?} searchParams
     * @return {?}
     */
    URLSearchParams.prototype.appendAll = function (searchParams) {
        var _this = this;
        searchParams.paramsMap.forEach(function (value, param) {
            var /** @type {?} */ list = _this.paramsMap.get(param) || [];
            for (var /** @type {?} */ i = 0; i < value.length; ++i) {
                list.push(value[i]);
            }
            _this.paramsMap.set(param, list);
        });
    };
    /**
     * @param {?} searchParams
     * @return {?}
     */
    URLSearchParams.prototype.replaceAll = function (searchParams) {
        var _this = this;
        searchParams.paramsMap.forEach(function (value, param) {
            var /** @type {?} */ list = _this.paramsMap.get(param) || [];
            list.length = 0;
            for (var /** @type {?} */ i = 0; i < value.length; ++i) {
                list.push(value[i]);
            }
            _this.paramsMap.set(param, list);
        });
    };
    /**
     * @return {?}
     */
    URLSearchParams.prototype.toString = function () {
        var _this = this;
        var /** @type {?} */ paramsList = [];
        this.paramsMap.forEach(function (values, k) {
            values.forEach(function (v) { return paramsList.push(_this.queryEncoder.encodeKey(k) + '=' + _this.queryEncoder.encodeValue(v)); });
        });
        return paramsList.join('&');
    };
    /**
     * @param {?} param
     * @return {?}
     */
    URLSearchParams.prototype.delete = function (param) { this.paramsMap.delete(param); };
    return URLSearchParams;
}());
function URLSearchParams_tsickle_Closure_declarations() {
    /** @type {?} */
    URLSearchParams.prototype.paramsMap;
    /** @type {?} */
    URLSearchParams.prototype.rawParams;
    /** @type {?} */
    URLSearchParams.prototype.queryEncoder;
}
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