Elep

/**
 * @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
 */
(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define("@angular/compiler/src/pipe_resolver", ["require", "exports", "@angular/compiler/src/core", "@angular/compiler/src/directive_resolver", "@angular/compiler/src/util"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    var core_1 = require("@angular/compiler/src/core");
    var directive_resolver_1 = require("@angular/compiler/src/directive_resolver");
    var util_1 = require("@angular/compiler/src/util");
    /**
     * Resolve a `Type` for {@link Pipe}.
     *
     * This interface can be overridden by the application developer to create custom behavior.
     *
     * See {@link Compiler}
     */
    var PipeResolver = /** @class */ (function () {
        function PipeResolver(_reflector) {
            this._reflector = _reflector;
        }
        PipeResolver.prototype.isPipe = function (type) {
            var typeMetadata = this._reflector.annotations(util_1.resolveForwardRef(type));
            return typeMetadata && typeMetadata.some(core_1.createPipe.isTypeOf);
        };
        /**
         * Return {@link Pipe} for a given `Type`.
         */
        PipeResolver.prototype.resolve = function (type, throwIfNotFound) {
            if (throwIfNotFound === void 0) { throwIfNotFound = true; }
            var metas = this._reflector.annotations(util_1.resolveForwardRef(type));
            if (metas) {
                var annotation = directive_resolver_1.findLast(metas, core_1.createPipe.isTypeOf);
                if (annotation) {
                    return annotation;
                }
            }
            if (throwIfNotFound) {
                throw new Error("No Pipe decorator found on " + util_1.stringify(type));
            }
            return null;
        };
        return PipeResolver;
    }());
    exports.PipeResolver = PipeResolver;
});
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