text: // The MIT License
  // 
  // Copyright (c) 2014 Gwendal Roué
  // 
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  // 
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  
  #import <Foundation/Foundation.h>
  #import "GRMustacheAvailabilityMacros_private.h"
  
  
  // Documented in GRMustacheFilter.h
  @protocol GRMustacheFilter <NSObject>
  @required
  
  // Documented in GRMustacheFilter.h
  - (id)transformedValue:(id)object GRMUSTACHE_API_PUBLIC;
  
  @optional
  
  /**
   * Returns a new filter that uses the _object_ parameter.
   *
   * Filter currying is involved in `f(a,...)` expressions, filters with more than
   * one argument.
   *
   * The evaluation of `f(a,b)` is implemented as `f(a)(b)`: the filter `f` is
   * asked for a curried filter using argument `a`. This curried filter `g` is
   * then applied to `b`:
   *
   * g = f(a)
   * f(a,b) = g(b)
   */
  - (id<GRMustacheFilter>)filterByCurryingArgument:(id)object GRMUSTACHE_API_INTERNAL;
  @end
  
  
  // Documented in GRMustacheFilter.h
  @interface GRMustacheFilter : NSObject<GRMustacheFilter>
  
  // Documented in GRMustacheFilter.h
  + (id<GRMustacheFilter>)filterWithBlock:(id(^)(id value))block GRMUSTACHE_API_PUBLIC;
  
  // Documented in GRMustacheFilter.h
  + (id<GRMustacheFilter>)variadicFilterWithBlock:(id(^)(NSArray *arguments))block GRMUSTACHE_API_PUBLIC;
  
  @end
  