/* Copyright (C) 1992, 1993, 1994, 1998 Aladdin Enterprises.  All rights reserved.

   This file is part of Aladdin Ghostscript.

   Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND.  No author
   or distributor accepts any responsibility for the consequences of using it,
   or for whether it serves any particular purpose or works at all, unless he
   or she says so in writing.  Refer to the Aladdin Ghostscript Free Public
   License (the "License") for full details.

   Every copy of Aladdin Ghostscript must include a copy of the License,
   normally in a plain ASCII text file named PUBLIC.  The License grants you
   the right to copy, modify and redistribute Aladdin Ghostscript, but only
   under certain conditions described in the License.  Among other things, the
   License requires that the copyright notice and this notice be preserved on
   all copies.
 */

/*$Id: idparam.h $ */
/* Interface to idparam.c */

#ifndef idparam_INCLUDED
#  define idparam_INCLUDED

#ifndef gs_matrix_DEFINED
#  define gs_matrix_DEFINED
typedef struct gs_matrix_s gs_matrix;

#endif

#ifndef gs_uid_DEFINED
#  define gs_uid_DEFINED
typedef struct gs_uid_s gs_uid;

#endif

/*
 * Unless otherwise noted, all the following routines return 0 for
 * a valid parameter, 1 for a defaulted parameter, or <0 on error.
 *
 * Note that all the dictionary parameter routines take a C string,
 * not a t_name ref *.  Even though this is slower, it means that
 * the GC doesn't have to worry about finding statically declared
 * name refs, and we have that many fewer static variables.
 *
 * All these routines allow pdict == NULL, which they treat the same as
 * pdict referring to an empty dictionary.  Routines with "null" in their
 * name return 2 if the parameter is null, without setting *pvalue.
 */
int dict_bool_param(P4(const ref * pdict, const char *kstr,
		       bool defaultval, bool * pvalue));
int dict_int_param(P6(const ref * pdict, const char *kstr,
		      int minval, int maxval, int defaultval, int *pvalue));
int dict_int_null_param(P6(const ref * pdict, const char *kstr,
			   int minval, int maxval, int defaultval,
			   int *pvalue));
int dict_uint_param(P6(const ref * pdict, const char *kstr,
		       uint minval, uint maxval, uint defaultval,
		       uint * pvalue));
int dict_float_param(P4(const ref * pdict, const char *kstr,
			floatp defaultval, float *pvalue));
int dict_int_array_param(P4(const ref * pdict, const char *kstr,
			    uint maxlen, int *ivec));
int dict_float_array_param(P5(const ref * pdict, const char *kstr,
			      uint maxlen, float *fvec,
			      const float *defaultvec));

/*
 * For dict_proc_param,
 *      defaultval = false means substitute t__invalid;
 *      defaultval = true means substitute an empty procedure.
 * In either case, return 1.
 */
int dict_proc_param(P4(const ref * pdict, const char *kstr, ref * pproc,
		       bool defaultval));
int dict_matrix_param(P3(const ref * pdict, const char *kstr,
			 gs_matrix * pmat));
int dict_uid_param(P4(const ref * pdict, gs_uid * puid, int defaultval,
		      gs_memory_t * mem));

/* Check that a UID in a dictionary is equal to an existing, valid UID. */
bool dict_check_uid_param(P2(const ref * pdict, const gs_uid * puid));

#endif /* idparam_INCLUDED */
