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/*\ 
||| This file a part of Pike, and is copyright by Fredrik Hubinette 
||| Pike is distributed as GPL (General Public License) 
||| See the files COPYING and DISCLAIMER for more information. 
\*/ 
/**/ 
#include "global.h" 
#include "constants.h" 
#include "pike_macros.h" 
#include "program.h" 
#include "pike_types.h" 
#include "stralloc.h" 
#include "pike_memory.h" 
#include "interpret.h" 
#include "mapping.h" 
#include "pike_error.h" 
#include "block_alloc.h" 
 
RCSID("$Id: constants.c,v 1.25 2001/02/19 23:49:59 grubba Exp $"); 
 
struct mapping *builtin_constants = 0; 
 
PMOD_EXPORT struct mapping *get_builtin_constants(void) 
{ 
  if(!builtin_constants) 
    builtin_constants=allocate_mapping(20); 
 
  return builtin_constants; 
} 
 
void low_add_efun(struct pike_string *name, struct svalue *fun) 
{ 
  struct svalue s; 
 
  if(!builtin_constants) 
    builtin_constants=allocate_mapping(20); 
 
  s.type=T_STRING; 
  s.subtype=0; 
  s.u.string=name; 
 
  if(fun) 
  { 
    mapping_insert(builtin_constants, &s, fun); 
  }else{ 
    map_delete(builtin_constants, &s); 
  } 
} 
 
void low_add_constant(char *name, struct svalue *fun) 
{ 
  struct pike_string *p; 
  p=make_shared_string(name); 
  low_add_efun(p, fun); 
  free_string(p); 
} 
 
PMOD_EXPORT void add_global_program(char *name, struct program *p) 
{ 
  struct svalue s; 
  s.type=T_PROGRAM; 
  s.subtype=0; 
  s.u.program=p; 
  low_add_constant(name, &s); 
} 
 
#undef EXIT_BLOCK 
#define EXIT_BLOCK(X) do {          \ 
  free_type(X->type);                   \ 
  free_string(X->name);                 \ 
}while(0) 
BLOCK_ALLOC(callable,128) 
 
/* Eats one ref to 'type' and 'name' */ 
PMOD_EXPORT struct callable *low_make_callable(c_fun fun, 
                                   struct pike_string *name, 
                                   struct pike_string *type, 
                                   INT16 flags, 
                                   optimize_fun optimize, 
                                   docode_fun docode) 
{ 
  struct callable *f=alloc_callable(); 
  f->refs=1; 
  f->function=fun; 
  f->name=name; 
  f->type=type; 
  f->flags=flags; 
  f->docode=docode; 
  f->optimize=optimize; 
#ifdef PIKE_DEBUG 
  { 
    struct pike_string *z=check_call(function_type_string,type,0); 
    f->may_return_void= z == void_type_string; 
    if(!z) fatal("Gnapp!\n"); 
    free_string(z); 
  } 
#endif 
  return f; 
} 
 
PMOD_EXPORT struct callable *make_callable(c_fun fun, 
                               char *name, 
                               char *type, 
                               INT16 flags, 
                               optimize_fun optimize, 
                               docode_fun docode) 
{ 
  return low_make_callable(fun,make_shared_string(name),parse_type(type),flags,optimize,docode); 
} 
 
PMOD_EXPORT struct callable *add_efun2(char *name, 
                            c_fun fun, 
                            char *type, 
                            INT16 flags, 
                            optimize_fun optimize, 
                            docode_fun docode) 
{ 
  struct svalue s; 
  struct pike_string *n; 
  struct callable *ret; 
 
  n=make_shared_string(name); 
  s.type=T_FUNCTION; 
  s.subtype=FUNCTION_BUILTIN; 
  ret=s.u.efun=make_callable(fun, name, type, flags, optimize, docode); 
  low_add_efun(n, &s); 
  free_svalue(&s); 
  free_string(n); 
  return ret; 
} 
 
PMOD_EXPORT struct callable *add_efun(char *name, c_fun fun, char *type, INT16 flags) 
{ 
  return add_efun2(name,fun,type,flags,0,0); 
} 
 
PMOD_EXPORT struct callable *quick_add_efun(char *name, ptrdiff_t name_length, 
                                            c_fun fun, 
                                            char *type, ptrdiff_t type_length, 
                                            INT16 flags, 
                                            optimize_fun optimize, 
                                            docode_fun docode) 
{ 
  struct svalue s; 
  struct pike_string *n,*t; 
  struct callable *ret; 
 
  n=make_shared_binary_string(name,name_length); 
  t=make_shared_binary_string(type,type_length); 
#ifdef DEBUG 
  check_type_string(t); 
#endif 
  s.type=T_FUNCTION; 
  s.subtype=FUNCTION_BUILTIN; 
  add_ref(n); 
  ret=s.u.efun=low_make_callable(fun, n, t, flags, optimize, docode); 
  low_add_efun(n, &s); 
  free_svalue(&s); 
  free_string(n); 
  return ret; 
} 
 
void cleanup_added_efuns(void) 
{ 
#ifdef DO_PIKE_CLEANUP 
  if(builtin_constants) 
  { 
    free_mapping(builtin_constants); 
    builtin_constants=0; 
  } 
#endif 
}