angular2/src/core/linker/pipe_resolver.js

Angular 2 - a web framework for modern web apps

'use strict';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);
};
var di_1 = require('angular2/src/core/di');
var lang_1 = require('angular2/src/facade/lang');
var exceptions_1 = require('angular2/src/facade/exceptions');
var metadata_1 = require('angular2/src/core/metadata');
var reflection_1 = require('angular2/src/core/reflection/reflection');
function _isPipeMetadata(type) {
    return type instanceof metadata_1.PipeMetadata;
}
/**
 * Resolve a `Type` for {@link PipeMetadata}.
 *
 * This interface can be overridden by the application developer to create custom behavior.
 *
 * See {@link Compiler}
 */
var PipeResolver = (function () {
    function PipeResolver() {
    }
    /**
     * Return {@link PipeMetadata} for a given `Type`.
     */
    PipeResolver.prototype.resolve = function (type) {
        var metas = reflection_1.reflector.annotations(di_1.resolveForwardRef(type));
        if (lang_1.isPresent(metas)) {
            var annotation = metas.find(_isPipeMetadata);
            if (lang_1.isPresent(annotation)) {
                return annotation;
            }
        }
        throw new exceptions_1.BaseException("No Pipe decorator found on " + lang_1.stringify(type));
    };
    PipeResolver = __decorate([
        di_1.Injectable(), 
        __metadata('design:paramtypes', [])
    ], PipeResolver);
    return PipeResolver;
})();
exports.PipeResolver = PipeResolver;
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