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/* 
|| This file is part of Pike. For copyright information see COPYRIGHT. 
|| Pike is distributed under GPL, LGPL and MPL. See the file COPYING 
|| for more information. 
*/ 
 
#include "global.h" 
 
#include "interpret.h" 
#include "program.h" 
#include "object.h" 
#include "svalue.h" 
#include "pike_error.h" 
 
#include "bignum.h" 
 
#define sp Pike_sp 
 
PMOD_EXPORT struct program *get_auto_bignum_program(void) 
{ 
  return bignum_program; 
} 
 
PMOD_EXPORT void convert_stack_top_to_bignum(void) 
{ 
  push_object(clone_object(bignum_program, 1)); 
} 
 
PMOD_EXPORT void convert_stack_top_with_base_to_bignum(void) 
{ 
  push_object(clone_object(bignum_program, 2)); 
} 
 
int is_bignum_object(struct object *o) 
{ 
  return o->prog == bignum_program; 
} 
 
PMOD_EXPORT int is_bignum_object_in_svalue(struct svalue *sv) 
{ 
  /* FIXME: object subtype? */ 
  return TYPEOF(*sv) == T_OBJECT && is_bignum_object(sv->u.object); 
} 
 
PMOD_EXPORT struct object *make_bignum_object(void) 
{ 
  return clone_object(bignum_program, 1); 
} 
 
PMOD_EXPORT struct object *bignum_from_svalue(struct svalue *s) 
{ 
  push_svalue(s); 
  return make_bignum_object(); 
} 
 
PMOD_EXPORT struct pike_string *string_from_bignum(struct object *o, int base) 
{ 
  push_int(base); 
  safe_apply(o, "digits", 1); 
   
  if(TYPEOF(sp[-1]) != T_STRING) 
    Pike_error("Gmp.mpz string conversion failed.\n"); 
   
  dmalloc_touch_svalue(sp-1); 
  return (--sp)->u.string; 
} 
 
PMOD_EXPORT void convert_svalue_to_bignum(struct svalue *s) 
{ 
  push_svalue(s); 
  convert_stack_top_to_bignum(); 
  free_svalue(s); 
  *s=sp[-1]; 
  sp--; 
  dmalloc_touch_svalue(sp); 
}