================================================================================
Class interface
================================================================================

@interface ClassName
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_interface
    name: (identifier)))

================================================================================
Class interface: inheritance
================================================================================

@interface ClassName: SuperclassName
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_interface
    name: (identifier)
    (superclass_reference
      name: (identifier))))

================================================================================
Class interface: protocol qualifier
================================================================================

@interface ClassName <ProtocolName>
@end

@interface ClassName : SuperclassName <ProtocolName>
@end

@interface ClassName <ProtocolName1, ProtocolName2>
@end

--------------------------------------------------------------------------------

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    (protocol_qualifiers
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      (protocol_identifier)))
  (class_interface
    name: (identifier)
    (protocol_qualifiers
      (protocol_identifier)
      (protocol_identifier))))

================================================================================
Class interface: ObjectType generic
================================================================================

@interface ViewController <ObjectType: id<UITableViewDelegate, UITableViewDataSource>> : NSObject <ProtocolName>

@property (nonatomic, strong) NSMutableArray<ObjectType> *array;

@end

@interface SDMemoryCache <KeyType, ObjectType> () {
  
}
@end

@interface SDMemoryCache <KeyType, ObjectType> : NSCache <KeyType, ObjectType> <SDMemoryCache>


@end

--------------------------------------------------------------------------------

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  (category_interface
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        (type_descriptor
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    (protocol_qualifiers
      (protocol_identifier))))

================================================================================
Class interface: __GENERICS generic
================================================================================

@interface __GENERICS(NSArray, ObjectType) (BlocksKit)
@end

@interface __GENERICS(NSDictionary, KeyType, ObjectType) (BlocksKit)
@end

--------------------------------------------------------------------------------

(translation_unit
  (category_interface
    (generics_type_reference
      name: (identifier)
      (type_identifier))
    category: (identifier))
  (category_interface
    (generics_type_reference
      name: (identifier)
      (type_identifier)
      (type_identifier))
    category: (identifier)))

================================================================================
Class interface: superclass type arguments
================================================================================

@interface ClassName : NSSet <TypeClassName *>
@end

@interface ClassName : NSSet <TypeClassName *> <ProtocolName>
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_interface
    name: (identifier)
    (superclass_reference
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      type_reference: (generic_type_references
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          declarator: (abstract_pointer_declarator)))))
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      type_reference: (generic_type_references
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          type: (type_identifier)
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    (protocol_qualifiers
      (protocol_identifier))))

================================================================================
Class interface: parameterized classes
================================================================================

@interface PC1<T, U : NSObject *> : NSObject
@end

// Parse a type parameter with a bound that terminates in '>>'.
@interface PC2<T : id<NSObject>> : NSObject
@end

@interface PC8<T> : NSObject <NSObject>
@end

--------------------------------------------------------------------------------

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  (class_interface
    name: (identifier)
    (parameterized_class_type_arguments
      type: (identifier)
      type: (identifier)
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        type: (type_identifier)
        declarator: (abstract_pointer_declarator)))
    (superclass_reference
      name: (identifier)))
  (comment)
  (class_interface
    name: (identifier)
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      type_reference: (generic_type_references
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          type: (type_identifier))))))

================================================================================
Class interface: NS_ROOT_CLASS attribute
================================================================================

NS_ROOT_CLASS
@interface ClassName
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_interface
    (class_interface_attribute_sepcifier)
    name: (identifier)))

================================================================================
Class interface: IB_DESIGNABLE attribute
================================================================================

IB_DESIGNABLE
@interface ClassName
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_interface
    (class_interface_attribute_sepcifier)
    name: (identifier)))

================================================================================
Class interface: instance variables
================================================================================

@interface ClassName {
  type1 iv1;
  id iv2;
  NSObject *object;
  void (^blockName)(void);
}
@end

@interface ClassName {
@public
  NSObject *object;
}
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_interface
    name: (identifier)
    (field_declaration
      type: (type_identifier)
      declarator: (field_identifier))
    (field_declaration
      type: (id)
      declarator: (field_identifier))
    (field_declaration
      type: (type_identifier)
      declarator: (pointer_declarator
        declarator: (field_identifier)))
    (field_declaration
      type: (primitive_type)
      declarator: (block_declarator
        declarator: (identifier)
        parameters: (parameter_list
          (parameter_declaration
            type: (primitive_type))))))
  (class_interface
    name: (identifier)
    (public)
    (field_declaration
      type: (type_identifier)
      declarator: (pointer_declarator
        declarator: (field_identifier)))))

================================================================================
Class interface: property primitive type
================================================================================

@interface ClassName
@property (readwrite, copy) float number;
@end

--------------------------------------------------------------------------------

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  (class_interface
    name: (identifier)
    (property_declaration
      (property_attributes
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      type: (primitive_type)
      declarator: (identifier))))

================================================================================
Class interface: property pointer type
================================================================================

@interface ClassName
@property (readwrite, copy, nullable) NSObject *object;
@end

--------------------------------------------------------------------------------

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  (class_interface
    name: (identifier)
    (property_declaration
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        (nullable))
      type: (type_identifier)
      declarator: (pointer_declarator
        declarator: (identifier)))))

================================================================================
Class interface: multiple properties declaration in one line
================================================================================

@interface ClassName
@property (readwrite, copy, nullable) NSObject *object, *object2;
@end

--------------------------------------------------------------------------------

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  (class_interface
    name: (identifier)
    (property_declaration
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      type: (type_identifier)
      declarator: (pointer_declarator
        declarator: (identifier))
      declarator: (pointer_declarator
        declarator: (identifier)))))

================================================================================
Class interface: property generic type
================================================================================

@interface ClassName
@property (nonatomic, readonly) NSArray <ObjectType> *array;
@property (nonatomic, readonly) NSArray <id<protocol>> *array;
@property (readwrite, copy) NSMapTable <NSString *, NSString *> *map;
@property (nonatomic) NSDictionary <NSURL *, NSOperation <SDWebImageDownloaderOperation> *> *URLOperations;
@property (nonatomic, copy) NSArray <NSObject *><ProtocolName, Optional> *array;
@end

--------------------------------------------------------------------------------

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  (class_interface
    name: (identifier)
    (property_declaration
      (property_attributes
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        (readonly))
      type: (generic_type_specifier
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        type_reference: (protocol_qualifiers
          (protocol_identifier)))
      declarator: (pointer_declarator
        declarator: (identifier)))
    (property_declaration
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        (readonly))
      type: (generic_type_specifier
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        type_reference: (generic_type_references
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              class_name: (id)
              type_reference: (protocol_qualifiers
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      declarator: (pointer_declarator
        declarator: (identifier)))
    (property_declaration
      (property_attributes
        (readwrite)
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      type: (generic_type_specifier
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        type_reference: (generic_type_references
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            declarator: (abstract_pointer_declarator))))
      declarator: (pointer_declarator
        declarator: (identifier)))
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        (nonatomic))
      type: (generic_type_specifier
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        type_reference: (generic_type_references
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            type: (type_identifier)
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          (type_descriptor
            type: (generic_type_specifier
              class_name: (type_identifier)
              type_reference: (protocol_qualifiers
                (protocol_identifier)))
            declarator: (abstract_pointer_declarator))))
      declarator: (pointer_declarator
        declarator: (identifier)))
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        type_reference: (protocol_qualifiers
          (protocol_identifier)
          (protocol_identifier)))
      declarator: (pointer_declarator
        declarator: (identifier)))))

================================================================================
Method declaration: keyword selector
================================================================================

@interface ClassName
+ (void)method:(int)a1 : (int)a2 k2: a3;
// - (void)method:(id)one, id two; // FIXME, WON'T FIX
@end

--------------------------------------------------------------------------------

(translation_unit
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          name: (identifier))
        (keyword_declarator
          type: (primitive_type)
          name: (identifier))
        (keyword_declarator
          keyword: (identifier)
          name: (identifier))))
    (comment)))

================================================================================
Method declaration: unary selector
================================================================================

@interface ClassName
- (void)method;
- (nullable id)method;
- (nullable id<procotol>) sel;
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_interface
    name: (identifier)
    (method_declaration
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      type: (primitive_type)
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      scope: (instance_scope)
      return_type: (nullable)
      type: (id)
      selector: (identifier))
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      scope: (instance_scope)
      return_type: (nullable)
      type: (generic_type_specifier
        class_name: (id)
        type_reference: (protocol_qualifiers
          (protocol_identifier)))
      selector: (identifier))))

================================================================================
Method declaration: nullable/nonnull attribute selector
================================================================================

@interface ClassName
- (nullable id)objectForKey:(nonnull id)key;
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_interface
    name: (identifier)
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          keyword: (identifier)
          type: (nonnull)
          type: (id)
          name: (identifier))))))

================================================================================
Class implementation
================================================================================

@implementation ClassName
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)))

================================================================================
Class implementation: inheritance
================================================================================

@implementation ClassName: SuperclassName
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)
    (superclass_reference
      name: (identifier))))

================================================================================
Class implementation: synthesize properties
================================================================================

@implementation ClassName
@synthesize p1, p2=v2;
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)
    (synthesize_definition
      (synthesize_property
        property: (identifier))
      (synthesize_property
        property: (identifier)
        instance_variable: (identifier)))))

================================================================================
Class implementation: dynamic properties
================================================================================

@implementation ClassName
@dynamic p1, p2;
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)
    (dynamic_definition
      property: (identifier)
      property: (identifier))))

================================================================================
Class implementation: instance variables
================================================================================

@implementation SDImageIOAnimatedCoder {
    size_t _width, _height;
    NSArray <SDImageIOCoderFrame *> *_frames;
}
@end

--------------------------------------------------------------------------------

(translation_unit
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    name: (identifier)
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      declarator: (field_identifier)
      declarator: (field_identifier))
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          (type_descriptor
            type: (type_identifier)
            declarator: (abstract_pointer_declarator))))
      declarator: (pointer_declarator
        declarator: (field_identifier)))))

================================================================================
Class implementation: method definition ending with semicolon
================================================================================

@protocol P4 -im1; @end
@interface I0<P4> @end
@implementation I0 -im1 { return 0; }; @end

--------------------------------------------------------------------------------

(translation_unit
  (protocol_declaration
    name: (identifier)
    (method_declaration
      scope: (instance_scope)
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    name: (identifier)
    (method_definition
      scope: (instance_scope)
      selector: (identifier)
      body: (compound_statement
        (return_statement
          (number_literal))))))

================================================================================
Instance variables: instance variables visibility specification
================================================================================

@implementation ClassName {
  @private
  type1 iv2;
  @public
  type2 iv2;
  @protected
  type3 iv3;
}
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)
    (private)
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      declarator: (field_identifier))
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      type: (type_identifier)
      declarator: (field_identifier))
    (protected)
    (field_declaration
      type: (type_identifier)
      declarator: (field_identifier))))

================================================================================
Method definition: unary selector
================================================================================

@implementation ClassName
- (void)sel {
  return;
}
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)
    (method_definition
      scope: (instance_scope)
      type: (primitive_type)
      selector: (identifier)
      body: (compound_statement
        (return_statement)))))

================================================================================
Method definition: keyword selector
================================================================================

@implementation ClassName
- (return_type) method_name:( argumentType1 )argumentName1 
           joiningArgument2:( argumentType2 )argumentName2 
           joiningArgument3:( argumentType3 )argumentName3 {
  
}
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)
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      scope: (instance_scope)
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          keyword: (identifier)
          type: (type_identifier)
          name: (identifier))
        (keyword_declarator
          keyword: (identifier)
          type: (type_identifier)
          name: (identifier))
        (keyword_declarator
          keyword: (identifier)
          type: (type_identifier)
          name: (identifier)))
      body: (compound_statement))))

================================================================================
Method definition: method without return type and parameter, and self
================================================================================

@implementation ClassName
- sel {
    self;
}
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)
    (method_definition
      scope: (instance_scope)
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      body: (compound_statement
        (expression_statement
          (self))))))

================================================================================
Method definition: compatibility with semicolon
================================================================================

@implementation ClassName
- (void)method; {
  
}
- (nullable id)method; {
  
}
@end

--------------------------------------------------------------------------------

(translation_unit
  (class_implementation
    name: (identifier)
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      scope: (instance_scope)
      return_type: (nullable)
      type: (id)
      selector: (identifier)
      body: (compound_statement))))

================================================================================
Category interface
================================================================================

@interface ClassName(Category)
@end

--------------------------------------------------------------------------------

(translation_unit
  (category_interface
    name: (identifier)
    category: (identifier)))

================================================================================
Category interface: anonymous
================================================================================

@interface ClassName()
@end

--------------------------------------------------------------------------------

(translation_unit
  (category_interface
    name: (identifier)))

================================================================================
Category interface: protocol qualifier
================================================================================

@interface ClassName(Category)<P1, P2>
@end

--------------------------------------------------------------------------------

(translation_unit
  (category_interface
    name: (identifier)
    category: (identifier)
    (protocol_qualifiers
      (protocol_identifier)
      (protocol_identifier))))

================================================================================
Category implementation
================================================================================

@implementation ClassName(Category)
@end

--------------------------------------------------------------------------------

(translation_unit
  (category_implementation
    name: (identifier)
    category: (identifier)))

================================================================================
Protocol declaration: inheritance
================================================================================

@protocol Protocol<ProtocolName, ProtocolName>
@end

--------------------------------------------------------------------------------

(translation_unit
  (protocol_declaration
    name: (identifier)
    (protocol_qualifiers
      (protocol_identifier)
      (protocol_identifier))))

================================================================================
Protocol forward declaration
================================================================================

@protocol ProtocolName1;
@protocol ProtocolName1, ProtocolName2;
@protocol ProtocolName
@end

--------------------------------------------------------------------------------

(translation_unit
  (protocol_forward_declaration
    name: (identifier))
  (protocol_forward_declaration
    name: (identifier)
    name: (identifier))
  (protocol_declaration
    name: (identifier)))

================================================================================
Class forward declaration
================================================================================

@class Class1, Class2;
@class RACSubject<ValueType>;
@class RACSignal<__covariant ValueType>;
@class RLMObject, RLMResults<RLMObjectType>;

--------------------------------------------------------------------------------

(translation_unit
  (class_forward_declaration
    name: (identifier)
    name: (identifier))
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    (protocol_qualifiers
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  (class_forward_declaration
    name: (identifier)
    (parameterized_class_type_arguments
      type: (identifier)))
  (class_forward_declaration
    name: (identifier)
    name: (identifier)
    (protocol_qualifiers
      (protocol_identifier))))

================================================================================
FOUNDATION_EXPORT global declaration
================================================================================

FOUNDATION_EXPORT void func(tr);
FOUNDATION_EXPORT SDWebImageContextOption _Nonnull const SDWebImageContextCustomManager;
FOUNDATION_EXPORT CGContextRef __nullable SDGraphicsGetCurrentContext(void) CF_RETURNS_NOT_RETAINED;
UIKIT_EXTERN NSNotificationName const Notification;
CG_EXTERN CGFloat const FSCalendarStandardHeaderHeight;

--------------------------------------------------------------------------------

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      parameters: (parameter_list
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          type: (type_identifier)))))
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