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guile/libguile/pairs.h
Greg J. Badros 1bbd0b849f * *.c: Pervasive software-engineering-motivated rewrite of 
function headers and argument checking.  Switched SCM_PROC,
SCM_PROC1 macros to be GUILE_PROC, GUILE_PROC1 (may change names
later, but was useful to keep old versions around while migrate)
that has docstrings and argument lists embedded in the GUILE_PROC
macro invocations that expand into a function header.  Use lots of
new SCM_VALIDATE_* macros to simplify error checking and reduce
tons of redundancy.  This is very similar to what I did for Scwm.

Note that none of the extraction of the docstrings, nor software
engineering checks of Scwm is yet added to Guile.  I'll work on
that tomorrow, I expect.

* Makefile.am: Added scm_validate.h to modinclude_HEADERS.

* chars.c: Added docstrings for the primitives defined in here.

* snarf.h:  Added GUILE_PROC, GUILE_PROC1.  Added
SCM_REGISTER_PROC to be like old SCM_PROC, though old SCM_PROC
still remains for now.  Changed naming convention for the s_foo
string name of the primitive to be s_scm_foo for ease of use with
the macro.

* scm_validate.h: Lots of new SCM_VALIDATE macros to simplify
argument checking through guile.  Maybe some of these should be
folded into the header file for the types they check, but for now
it was easiest to just stick them all in one place.
1999-12-12 02:36:16 +00:00

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/* classes: h_files */
#ifndef PAIRSH
#define PAIRSH
/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
#include "libguile/__scm.h"
typedef struct scm_cell
{
SCM car;
SCM cdr;
} scm_cell;
/* SCM_PTR_LT defines how to compare two SCM_CELLPTRs (which may not be in the
* same scm_array). SCM_CELLPTR is a pointer to a cons cell which may be
* compared or differenced. SCMPTR is used for stack bounds.
*/
#if !defined(__TURBOC__) || defined(__TOS__)
typedef scm_cell *SCM_CELLPTR;
typedef SCM *SCMPTR;
# ifdef nosve
# define SCM_PTR_MASK 0xffffffffffff
# define SCM_PTR_LT(x, y) (((int)(x)&SCM_PTR_MASK) < ((int)(y)&SCM_PTR_MASK))
# else
# define SCM_PTR_LT(x, y) ((x) < (y))
# endif /* def nosve */
#else /* defined(__TURBOC__) && !defined(__TOS__) */
# ifdef PROT386
typedef scm_cell *SCM_CELLPTR;
typedef SCM *SCMPTR;
# define SCM_PTR_LT(x, y) (((long)(x)) < ((long)(y)))
# else
typedef scm_cell huge *SCM_CELLPTR;
typedef SCM huge *SCMPTR;
# define SCM_PTR_LT(x, y) ((x) < (y))
# endif /* def PROT386 */
#endif /* defined(__TURBOC__) && !defined(__TOS__) */
#define SCM_PTR_GT(x, y) SCM_PTR_LT(y, x)
#define SCM_PTR_LE(x, y) (!SCM_PTR_GT(x, y))
#define SCM_PTR_GE(x, y) (!SCM_PTR_LT(x, y))
#define SCM_NULLP(x) (SCM_EOL == (x))
#define SCM_NNULLP(x) (SCM_EOL != (x))
/* Cons Pairs
*/
#define SCM_CAR(x) (((scm_cell *)(SCM2PTR(x)))->car)
#define SCM_CDR(x) (((scm_cell *)(SCM2PTR(x)))->cdr)
#define SCM_GCCDR(x) (~1L & SCM_CDR(x))
#define SCM_SETCAR(x, v) (SCM_CAR(x) = (SCM)(v))
#define SCM_SETCDR(x, v) (SCM_CDR(x) = (SCM)(v))
#define SCM_CARLOC(x) (&SCM_CAR (x))
#define SCM_CDRLOC(x) (&SCM_CDR (x))
#define SCM_SETAND_CAR(x, y) (SCM_CAR (x) &= (y))
#define SCM_SETAND_CDR(x, y) (SCM_CDR (x) &= (y))
#define SCM_SETOR_CAR(x, y) (SCM_CAR (x) |= (y))
#define SCM_SETOR_CDR(x, y) (SCM_CDR (x) |= (y))
#define SCM_CAAR(OBJ) SCM_CAR (SCM_CAR (OBJ))
#define SCM_CDAR(OBJ) SCM_CDR (SCM_CAR (OBJ))
#define SCM_CADR(OBJ) SCM_CAR (SCM_CDR (OBJ))
#define SCM_CDDR(OBJ) SCM_CDR (SCM_CDR (OBJ))
#define SCM_CAAAR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (OBJ)))
#define SCM_CDAAR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (OBJ)))
#define SCM_CADAR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (OBJ)))
#define SCM_CDDAR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (OBJ)))
#define SCM_CAADR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (OBJ)))
#define SCM_CDADR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (OBJ)))
#define SCM_CADDR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (OBJ)))
#define SCM_CDDDR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (OBJ)))
#define SCM_CAAAAR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ))))
#define SCM_CDAAAR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ))))
#define SCM_CADAAR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ))))
#define SCM_CDDAAR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ))))
#define SCM_CAADAR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ))))
#define SCM_CDADAR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ))))
#define SCM_CADDAR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ))))
#define SCM_CDDDAR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ))))
#define SCM_CAAADR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ))))
#define SCM_CDAADR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ))))
#define SCM_CADADR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ))))
#define SCM_CDDADR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ))))
#define SCM_CAADDR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ))))
#define SCM_CDADDR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ))))
#define SCM_CADDDR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ))))
#define SCM_CDDDDR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ))))
#ifdef GUILE_DEBUG_FREELIST
#define SCM_NEWCELL(_into) do { _into = scm_debug_newcell (); } while (0)
#else
#define SCM_NEWCELL(_into) \
do { \
if (SCM_IMP(scm_freelist)) \
_into = scm_gc_for_newcell();\
else \
{ \
_into = scm_freelist; \
scm_freelist = SCM_CDR(scm_freelist);\
SCM_SETCAR(_into, scm_tc16_allocated); \
++scm_cells_allocated; \
} \
} while(0)
#endif
extern SCM scm_cons SCM_P ((SCM x, SCM y));
extern SCM scm_cons2 SCM_P ((SCM w, SCM x, SCM y));
extern SCM scm_pair_p SCM_P ((SCM x));
extern SCM scm_set_car_x SCM_P ((SCM pair, SCM value));
extern SCM scm_set_cdr_x SCM_P ((SCM pair, SCM value));
extern void scm_init_pairs SCM_P ((void));
#endif /* PAIRSH */
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