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/* 
 * $Id: compilation.h,v 1.18 2000/07/10 18:21:33 grubba Exp $ 
 * 
 * Compilator state push / pop operator construction file 
 * 
 * (Can you tell I like macros?) 
 */ 
 
/* 
 * IMEMBER: do not reset this member when pushing 
 * DMEMBER: This member should be the same when popping as when pushing. 
 * ZMEMBER: reset this member to zero when pushing 
 * STACKMEMBER: Like IMEMBER, but is not allowed to become more when popping 
 * 
 * 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 PIKE_DEBUG 
#define DO_DEBUG_CODE(X) X 
#else 
#define DO_DEBUG_CODE(X) 
#endif 
 
#ifdef STRUCT 
#define IMEMBER(X,Y,Z) X Y ; 
#define DMEMBER(X,Y,Z) X Y ; 
#define STACKMEMBER(X,Y,Z) X Y ; 
#define IMEMBER2(X,Y,Z,Q) X Y Z ; 
#define ZMEMBER(X,Y,Z) X Y ; 
#define ZMEMBER2(X,Y,Z,Q) X Y Z ; 
#define SNAME(X,Y) struct X { struct X *previous; 
#define SEND }; 
#endif 
 
#ifdef EXTERN 
#define IMEMBER(X,Y,Z) 
#define DMEMBER(X,Y,Z) 
#define STACKMEMBER(X,Y,z) 
#define IMEMBER2(X,Y,Z,Q) 
#define ZMEMBER(X,Y,Z) 
#define ZMEMBER2(X,Y,Z,Q) 
#define SNAME(X,Y) extern struct X * Y; 
#define SEND 
#endif 
 
#ifdef DECLARE 
#define IMEMBER(X,Y,Z) Z, 
#define DMEMBER(X,Y,Z) Z, 
#define STACKMEMBER(X,Y,Z) Z, 
#define IMEMBER2(X,Y,Z,Q) Q, 
#define ZMEMBER(X,Y,Z) Z, 
#define ZMEMBER2(X,Y,Z,Q) Q, 
#define SNAME(X,Y) \ 
  extern struct X PIKE_CONCAT(Y,_base); \ 
  struct X * Y = & PIKE_CONCAT(Y,_base); \ 
  struct X PIKE_CONCAT(Y,_base) = { 0,  
#define SEND }; 
#endif 
 
#ifdef PUSH 
#define IMEMBER(X,Y,Z) MEMCPY((char *)&(nEw->Y), (char *)&(Pike_compiler->Y), sizeof(nEw->Y)); 
#define DMEMBER(X,Y,Z) IMEMBER(X,Y) 
#define STACKMEMBER(X,Y,Z) (nEw->Y=Pike_compiler->Y); 
#define IMEMBER2(X,Y,Z,Q) IMEMBER(X,Y) 
#define ZMEMBER(X,Y,Z) MEMSET((char *)&(nEw->Y), 0, sizeof(nEw->Y)); 
#define ZMEMBER2(X,Y,Z,Q) ZMEMBER(X,Y) 
#define SNAME(X,Y) { \ 
      struct X *nEw; \ 
      nEw=ALLOC_STRUCT(X); \ 
      nEw->previous=Pike_compiler; 
#define SEND \ 
      Pike_compiler=nEw; \ 
      } 
 
#endif 
 
 
#ifdef POP 
#define IMEMBER(X,Y,Z)  
#define IMEMBER2(X,Y,Z,Q) IMEMBER(X,Y) 
#define ZMEMBER(X,Y,Z)  
#define ZMEMBER2(X,Y,Z,Q) ZMEMBER(X,Y) 
 
#define DMEMBER(X,Y,Z) DO_DEBUG_CODE( \ 
    if(MEMCMP((char *)&(Pike_compiler->Y), (char *)&(oLd->Y), sizeof(oLd->Y))) \ 
      fatal("Variable " #Y " became whacked during compilation.\n"); ) \ 
  IMEMBER(X,Y) 
 
#define STACKMEMBER(X,Y,Z) DO_DEBUG_CODE( \ 
    if(Pike_compiler->Y < oLd->Y) \ 
      fatal("Stack " #Y " shrunk %d steps compilation, currently: %p.\n",oLd->Y - Pike_compiler->Y,Pike_compiler->Y); ) 
 
#define SNAME(X,Y) { \ 
      struct X *oLd=Pike_compiler->previous; 
 
#define SEND \ 
     free((char *)Pike_compiler); \ 
     Pike_compiler=oLd; \ 
    } 
 
#define PCODE(X) X 
#else 
#define PCODE(X) 
#endif 
 
 
#ifdef PIKE_DEBUG 
#define STRMEMBER(X,Y) \ 
  PCODE(if(Pike_compiler->X) fatal("Variable " #X " not deallocated properly.\n");) \ 
  ZMEMBER(struct pike_string *,X,Y) 
#else 
#define STRMEMBER(X,Y) \ 
  ZMEMBER(struct pike_string *,X,Y) 
#endif 
 
  SNAME(program_state,Pike_compiler) 
  ZMEMBER(INT32,last_line,0) 
  STRMEMBER(last_file,0) 
  ZMEMBER(struct object *,fake_object,0) 
  ZMEMBER(struct program *,new_program,0) 
  ZMEMBER(struct program *,malloc_size_program,0) 
  ZMEMBER(node *,init_node,0) 
  ZMEMBER(INT32,last_pc,0) 
  ZMEMBER(int,num_parse_error,0) 
  ZMEMBER(struct compiler_frame *,compiler_frame,0) 
  ZMEMBER(INT32,num_used_modules,0) 
  IMEMBER(int,compiler_pass,0) 
  ZMEMBER(int,local_class_counter,0) 
  ZMEMBER(int,catch_level,0) 
  ZMEMBER(INT32,current_modifiers,0) 
  ZMEMBER(int,varargs,0) 
  STRMEMBER(last_identifier,0) 
  ZMEMBER(struct mapping *,module_index_cache,0) 
  STACKMEMBER(unsigned char *,type_stackp,type_stack) 
  STACKMEMBER(unsigned char **,pike_type_mark_stackp,pike_type_mark_stack) 
  SEND 
 
#undef PCODE 
#undef STRMEMBER 
#undef IMEMBER 
#undef DMEMBER 
#undef ZMEMBER 
#undef IMEMBER2 
#undef ZMEMBER2 
#undef SNAME 
#undef SEND 
#undef STACKMEMBER 
 
#undef EXTERN 
#undef STRUCT 
#undef PUSH 
#undef POP 
#undef DECLARE 
#undef DO_DEBUG_CODE