angular2/es6/prod/src/compiler/pipe_resolver.js

Angular 2 - a web framework for modern web apps

var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { resolveForwardRef, Injectable } from 'angular2/src/core/di';
import { isPresent, stringify } from 'angular2/src/facade/lang';
import { BaseException } from 'angular2/src/facade/exceptions';
import { PipeMetadata } from 'angular2/src/core/metadata';
import { ReflectorReader } from 'angular2/src/core/reflection/reflector_reader';
import { reflector } from 'angular2/src/core/reflection/reflection';
function _isPipeMetadata(type) {
    return type instanceof PipeMetadata;
}
/**
 * Resolve a `Type` for {@link PipeMetadata}.
 *
 * This interface can be overridden by the application developer to create custom behavior.
 *
 * See {@link Compiler}
 */
export let PipeResolver = class PipeResolver {
    constructor(_reflector) {
        if (isPresent(_reflector)) {
            this._reflector = _reflector;
        }
        else {
            this._reflector = reflector;
        }
    }
    /**
     * Return {@link PipeMetadata} for a given `Type`.
     */
    resolve(type) {
        var metas = this._reflector.annotations(resolveForwardRef(type));
        if (isPresent(metas)) {
            var annotation = metas.find(_isPipeMetadata);
            if (isPresent(annotation)) {
                return annotation;
            }
        }
        throw new BaseException(`No Pipe decorator found on ${stringify(type)}`);
    }
};
PipeResolver = __decorate([
    Injectable(), 
    __metadata('design:paramtypes', [ReflectorReader])
], PipeResolver);
export var CODEGEN_PIPE_RESOLVER = new PipeResolver(reflector);