#include <petsc/private/fortranimpl.h>
#include <petscsnes.h>

#if defined(PETSC_HAVE_FORTRAN_CAPS)
#define sneslinesearchgettype_          SNESLINESEARCHGETTYPE
#define sneslinesearchsettype_          SNESLINESEARCHSETTYPE
#define sneslinesearchsetprecheck_      SNESLINESEARCHSETPRECHECK
#define sneslinesearchgetprecheck_      SNESLINESEARCHGETPRECHECK
#define sneslinesearchsetpostcheck_     SNESLINESEARCHSETPOSTCHECK
#define sneslinesearchgetpostcheck_     SNESLINESEARCHGETPOSTCHECK
#elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE)
#define sneslinesearchgettype_          sneslinesearchgettype
#define sneslinesearchsettype_          sneslinesearchsettype
#define sneslinesearchsetprecheck_      sneslinesearchsetprecheck
#define sneslinesearchgetprecheck_      sneslinesearchgetprecheck
#define sneslinesearchsetpostcheck_     sneslinesearchsetpostcheck
#define sneslinesearchgetpostcheck_     sneslinesearchgetpostcheck

#endif

/* fortranpointers go: shell, precheck, postcheck */

static PetscErrorCode oursneslinesearchprecheck(SNESLineSearch linesearch, Vec X, Vec Y, PetscBool * changed, void * ctx)
{
  PetscErrorCode ierr = 0;
  (*(void (*)(SNESLineSearch*,Vec*, Vec*, PetscBool*,void*,PetscErrorCode*))(((PetscObject)linesearch)->fortran_func_pointers[1]))(&linesearch,&X,&Y,changed,ctx,&ierr);CHKERRQ(ierr);
  return 0;
}

static PetscErrorCode oursneslinesearchpostcheck(SNESLineSearch linesearch, Vec X, Vec Y, Vec W, PetscBool * changed_Y, PetscBool * changed_W, void * ctx)
{
  PetscErrorCode ierr = 0;
  (*(void (*)(SNESLineSearch*,Vec*,Vec*,Vec*,PetscBool*,PetscBool*,void*,PetscErrorCode*))
     (((PetscObject)linesearch)->fortran_func_pointers[2]))(&linesearch,&X,&Y,&W,changed_Y,changed_W,ctx,&ierr);CHKERRQ(ierr);
  return 0;
}

PETSC_EXTERN void sneslinesearchgettype_(SNESLineSearch *linesearch,char* name, PetscErrorCode *ierr,PETSC_FORTRAN_CHARLEN_T len)
{
  const char *tname;

  *ierr = SNESLineSearchGetType(*linesearch,&tname);
  *ierr = PetscStrncpy(name,tname,len);if (*ierr) return;
  FIXRETURNCHAR(PETSC_TRUE,name,len);
}

PETSC_EXTERN void sneslinesearchsettype_(SNESLineSearch *linesearch,char* type,PetscErrorCode *ierr,PETSC_FORTRAN_CHARLEN_T len)
{
  char *t;

  FIXCHAR(type,len,t);
  *ierr = SNESLineSearchSetType(*linesearch,t);if (*ierr) return;
  FREECHAR(type,t);
}

PETSC_EXTERN void sneslinesearchsetprecheck_(SNESLineSearch *linesearch,void (*func)(SNESLineSearch*,Vec*,Vec*,PetscBool*,PetscErrorCode*),void *ctx,PetscErrorCode *ierr)
{
  PetscObjectAllocateFortranPointers(*linesearch,3);
  ((PetscObject)*linesearch)->fortran_func_pointers[1] = (PetscVoidFunction)func;

  *ierr = SNESLineSearchSetPreCheck(*linesearch,oursneslinesearchprecheck,ctx);
}

PETSC_EXTERN void sneslinesearchsetpostcheck_(SNESLineSearch *linesearch,void (*func)(SNESLineSearch*,Vec*,Vec*,Vec*,PetscBool*,PetscBool*,PetscErrorCode*,void*),void *ctx,PetscErrorCode *ierr)
{
  PetscObjectAllocateFortranPointers(*linesearch,3);
  ((PetscObject)*linesearch)->fortran_func_pointers[2] = (PetscVoidFunction)func;

  *ierr = SNESLineSearchSetPostCheck(*linesearch,oursneslinesearchpostcheck,ctx);
}