#include "token.h"
+struct psi_cpp;
struct psi_cpp_macro_decl;
struct psi_cpp_macro_call;
struct psi_num_exp;
struct psi_cpp_exp *psi_cpp_exp_init(token_t type, void *data);
void psi_cpp_exp_free(struct psi_cpp_exp **exp_ptr);
void psi_cpp_exp_dump(int fd, struct psi_cpp_exp *exp);
+void psi_cpp_exp_exec(struct psi_cpp_exp *exp, struct psi_cpp *cpp, struct psi_data *D);
#endif