typedef struct enum_t enum_t;
typedef struct enum_value_t enum_value_t;
typedef struct label_t label_t;
typedef struct enum_t enum_t;
typedef struct enum_value_t enum_value_t;
typedef struct label_t label_t;
typedef struct declaration_t declaration_t;
typedef struct typedef_t typedef_t;
typedef struct variable_t variable_t;
typedef struct declaration_t declaration_t;
typedef struct typedef_t typedef_t;
typedef struct variable_t variable_t;