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/* 
 * $Id: compilation.h,v 1.8 1998/03/28 15:38:36 grubba Exp $ 
 * 
 * Compilator state push / pop operator construction file 
 * 
 * (Can you tell I like macros?) 
 */ 
 
/* 
 * IMEMBER: do not reset this member when popping 
 * ZMEMBER: reset this member to zero when pushing 
 * 
 * defining STRUCT defines the structures 
 * defining DECLARE creates global vars for saving linked list 
 *                  of these lists... 
 * defining PUSH pushes the selected state(s) on the stack(s) 
 * defining POP pops the selected state(s) from the stack(s) 
 * 
 * define PROGRAM_STATE to select the program state 
 */ 
 
#ifdef STRUCT 
#define IMEMBER(X,Y) X Y ; 
#define IMEMBER2(X,Y,Z) X Y Z ; 
#define ZMEMBER(X,Y) X Y ; 
#define ZMEMBER2(X,Y,Z) X Y Z ; 
#define SNAME(X,Y) struct X { struct X *previous; 
#define SEND }; 
#endif 
 
#ifdef DECLARE 
#define IMEMBER(X,Y) 
#define IMEMBER2(X,Y,Z) 
#define ZMEMBER(X,Y) 
#define ZMEMBER2(X,Y,Z) 
#define SNAME(X,Y) static struct X * Y = 0; 
#define SEND 
#endif 
 
#ifdef PUSH 
#define IMEMBER(X,Y) MEMCPY((char *)&(oLd->Y), (char *)&(Y), sizeof(Y)); 
#define IMEMBER2(X,Y,Z) IMEMBER(X,Y) 
#define ZMEMBER(X,Y) MEMCPY((char *)&(oLd->Y), (char *)&(Y), sizeof(Y)); \ 
                     MEMSET((char *)&(Y), 0, sizeof(Y)); 
#define ZMEMBER2(X,Y,Z) ZMEMBER(X,Y) 
#define SNAME(X,Y) { \ 
      struct X *oLd; \ 
      oLd=ALLOC_STRUCT(X); \ 
      oLd->previous=Y; Y=oLd; 
#define SEND } 
#endif 
 
 
#ifdef POP 
#define IMEMBER(X,Y) MEMCPY((char *)&(Y), (char *)&(oLd->Y), sizeof(Y)); 
#define IMEMBER2(X,Y,Z) IMEMBER(X,Y) 
#define ZMEMBER(X,Y) MEMCPY((char *)&(Y), (char *)&(oLd->Y), sizeof(Y)); 
#define ZMEMBER2(X,Y,Z) ZMEMBER(X,Y) 
#define SNAME(X,Y) { \ 
      struct X *oLd; \ 
      oLd=Y; Y=oLd->previous; 
#define SEND free((char *)oLd); \ 
    } 
#define PCODE(X) X 
#else 
#define PCODE(X) 
#endif 
 
 
#ifdef DEBUG 
#define STRMEMBER(X,Y) \ 
  PCODE(if(X) fatal("Variable %s not deallocated properly.\n",Y);) \ 
  ZMEMBER(struct pike_string *,X) 
#else 
#define STRMEMBER(X,Y) \ 
  ZMEMBER(struct pike_string *,X) 
#endif 
 
  SNAME(program_state,previous_program_state) 
  ZMEMBER(INT32,last_line) 
  STRMEMBER(last_file,"last_file") 
  ZMEMBER(struct object *,fake_object) 
  ZMEMBER(struct program *,new_program) 
  ZMEMBER(struct program *,malloc_size_program) 
  ZMEMBER(node *,init_node) 
  ZMEMBER(INT32,last_pc) 
  ZMEMBER(int,num_parse_error) 
  ZMEMBER(struct compiler_frame *,compiler_frame) 
  ZMEMBER(dynamic_buffer,used_modules) 
  IMEMBER(int,comp_stackp) 
  IMEMBER(int,compiler_pass) 
  ZMEMBER(int,local_class_counter) 
  ZMEMBER(int,catch_level) 
  SEND 
 
#undef PCODE 
#undef STRMEMBER 
#undef IMEMBER 
#undef ZMEMBER 
#undef IMEMBER2 
#undef ZMEMBER2 
#undef SNAME 
#undef SEND 
 
#undef STRUCT 
#undef PUSH 
#undef POP 
#undef DECLARE