================================================================================
Macro: ifdef
================================================================================

#ifdef COND

#endif

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

(translation_unit)

================================================================================
Macro: ifdef and else
================================================================================

#ifdef COND

#else

#endif

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

(translation_unit)

================================================================================
Macro: ifdef in class interface
================================================================================

@interface ClassName
#ifdef COND
@property (readwrite, copy) float number;
#endif
@end

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

(translation_unit
  (class_interface
    name: (identifier)
    (property_declaration
      (property_attributes
        (readwrite)
        (copy))
      type: (primitive_type)
      declarator: (identifier))))

================================================================================
Macro: ifdef in class implementation
================================================================================

@implementation ClassName
#ifdef COND
- (void)method {
  
}
#endif
@end

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

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

================================================================================
Macro: ifdef in class implementation
================================================================================

@implementation ClassName
#ifdef COND
- (void)method {
#ifdef COND
  self;
#else
  self = [super init];
#endif
}
#endif
@end

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

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

================================================================================
Macro: preproc define in class implementation
================================================================================

@implementation ClassName
#define SD_MAX_FILE_EXTENSION_LENGTH 1
#define function(key, default) \
[object methodForKey:(key) defaultValue:(default)]
@end

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

(translation_unit
  (class_implementation
    name: (identifier)
    (preproc_def
      name: (identifier)
      value: (preproc_arg))
    (preproc_function_def
      name: (identifier)
      parameters: (preproc_params
        (identifier)
        (identifier))
      value: (preproc_arg))))

================================================================================
Macro: ifdef in extern
================================================================================

FOUNDATION_STATIC_INLINE NSUInteger SDMemoryCacheCostForImage(UIImage *image) {
#if SD_MAC
    frameCount = 1;
#elif SD_UIKIT || SD_WATCH
    frameCount = image.images.count > 0 ? image.images.count : 1;
#endif
    return -1;
}

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

(translation_unit
  (function_definition
    (storage_class_specifier)
    type: (type_identifier)
    declarator: (function_declarator
      declarator: (identifier)
      parameters: (parameter_list
        (parameter_declaration
          type: (type_identifier)
          declarator: (pointer_declarator
            declarator: (identifier)))))
    body: (compound_statement
      (expression_statement
        (assignment_expression
          left: (identifier)
          right: (number_literal)))
      (return_statement
        (number_literal)))))

================================================================================
Macro: undef
================================================================================

#undef COND

#ifdef COND

#undef COND

#endif

#undef COND
#ifdef COND
#endif

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

(translation_unit)

================================================================================
Macro: API_AVAILABLE
================================================================================

API_AVAILABLE(ios(14.0), tvos(14.0), macos(11.0), watchos(7.0))
@interface ClassName
@end

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

(translation_unit
  (class_interface
    (attribute_specifier
      (availability_attribute_specifier
        (platform_version
          platform: (platform)
          version: (number_literal))
        (platform_version
          platform: (platform)
          version: (number_literal))
        (platform_version
          platform: (platform)
          version: (number_literal))
        (platform_version
          platform: (platform)
          version: (number_literal))))
    name: (identifier)))

================================================================================
Macro: pragma
================================================================================

#import <Foundation/Foundation.h>

#pragma mark - foobar
int main(int argc, char *argv[]) {
  #pragma foobar
  @autoreleasepool {
    #pragma foorbar

  }
}

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

(translation_unit
  (preproc_import
    path: (system_lib_string))
  (pragma)
  (function_definition
    type: (primitive_type)
    declarator: (function_declarator
      declarator: (identifier)
      parameters: (parameter_list
        (parameter_declaration
          type: (primitive_type)
          declarator: (identifier))
        (parameter_declaration
          type: (primitive_type)
          declarator: (pointer_declarator
            declarator: (array_declarator
              declarator: (identifier))))))
    body: (compound_statement
      (pragma)
      (autoreleasepool_statement
        consequence: (compound_statement
          (pragma))))))

================================================================================
Macros: ifdef
================================================================================

#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED < 90000)
    [obj method];
#endif

#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED < 90000) \
|| (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED < 101100)
    [obj method];
#endif

#if COND
#else
@implementation ClassName

#if COND
- (NSArray *)method:(BOOL)arg1
{
    #if COND
    if (arg1) {
    }
    #else
    #endif
    return @[];
}
#else
#endif

@end
#endif

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

(translation_unit
  (expression_statement
    (message_expression
      receiver: (type_identifier)
      selector: (identifier)))
  (expression_statement
    (message_expression
      receiver: (type_identifier)
      selector: (identifier)))
  (class_implementation
    name: (identifier)
    (method_definition
      scope: (instance_scope)
      type: (type_identifier)
      declarator: (abstract_pointer_declarator)
      selector: (keyword_selector
        (keyword_declarator
          keyword: (identifier)
          type: (BOOL)
          name: (identifier)))
      body: (compound_statement
        (if_statement
          condition: (parenthesized_expression
            (identifier))
          consequence: (compound_statement))
        (return_statement
          (array_expression))))))

================================================================================
Macros: nested ifdef
================================================================================

#ifdef __OBJC__
#import <UIKit/UIKit.h> // retain
#else
#ifndef FOUNDATION_EXPORT
#if defined(__cplusplus)
#define FOUNDATION_EXPORT extern "C" // retain
#else
#define FOUNDATION_EXPORT extern
#endif
#endif
#endif

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

(translation_unit
  (preproc_import
    path: (system_lib_string))
  (comment)
  (preproc_def
    name: (identifier)
    value: (preproc_arg)))

================================================================================
Macros: CF_EXTERN_C_BEGIN and CF_EXTERN_C_END
================================================================================

CF_EXTERN_C_BEGIN

NSMutableArray* GetOpaqueDataArray();

CF_EXTERN_C_END

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

(translation_unit
  (declaration
    type: (type_identifier)
    declarator: (pointer_declarator
      declarator: (function_declarator
        declarator: (identifier)
        parameters: (parameter_list)))))

================================================================================
Macros: blank behind NS_ASSUME_NONNULL_BEGIN and NS_ASSUME_NONNULL_END
================================================================================

NS_ASSUME_NONNULL_BEGIN 
NS_ASSUME_NONNULL_END 

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

(translation_unit)