angular2
Version:
Angular 2 - a web framework for modern web apps
46 lines • 4.81 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
switch (arguments.length) {
case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
}
};
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 { 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 {
/**
* Return {@link PipeMetadata} for a given `Type`.
*/
resolve(type) {
var metas = 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', [])
], PipeResolver);
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