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/* Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995 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, 675 Mass Ave, Cambridge, MA 02139, 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.
*/
/* "rope.c" interface between C and SCM.
Author: Aubrey Jaffer */
#include "scm.h"
/* Numeric conversions */
/* Convert longs to SCM */
SCM long2num(sl)
long sl;
{
if (!FIXABLE(sl)) {
# ifdef BIGDIG
return long2big(sl);
# else
# ifdef FLOATS
return makdbl((double) sl, 0.0);
# else
return BOOL_F;
# endif
# endif
}
return MAKINUM(sl);
}
SCM ulong2num(sl)
unsigned long sl;
{
if (!POSFIXABLE(sl)) {
#ifdef BIGDIG
return ulong2big(sl);
#else
# ifdef FLOATS
return makdbl((double) sl, 0.0);
# else
return BOOL_F;
# endif
#endif
}
return MAKINUM(sl);
}
/* Convert SCM to numbers */
unsigned char num2uchar(num, pos, s_caller)
SCM num;
char *pos, *s_caller;
{
unsigned long res = INUM(num);
ASSERT(INUMP(num) && (255L >= res),num,pos,s_caller);
return (unsigned char) res;
}
unsigned short num2ushort(num, pos, s_caller)
SCM num;
char *pos, *s_caller;
{
unsigned long res = INUM(num);
ASSERT(INUMP(num) && (65535L >= res),num,pos,s_caller);
return (unsigned short) res;
}
unsigned long num2ulong(num, pos, s_caller)
SCM num;
char *pos, *s_caller;
{
unsigned long res;
if INUMP(num) {
ASRTGO(0 < num, errout);
res = INUM((unsigned long)num);
return res;
}
ASRTGO(NIMP(num), errout);
#ifdef FLOATS
if REALP(num) {
double u = REALPART(num);
if ((0 <= u) && (u <= (unsigned long)~0L)) {
res = u;
return res;
}
}
#endif
#ifdef BIGDIG
if (TYP16(num)==tc16_bigpos) {
sizet l = NUMDIGS(num);
ASRTGO(DIGSPERLONG >= l, errout);
res = 0;
for(;l--;) res = BIGUP(res) + BDIGITS(num)[l];
return res;
}
#endif
errout: wta(num, pos, s_caller);
}
long num2long(num, pos, s_caller)
SCM num;
char *pos, *s_caller;
{
long res;
if INUMP(num) {
res = INUM((long)num);
return res;
}
ASRTGO(NIMP(num), errout);
# ifdef FLOATS
if REALP(num) {
double u = REALPART(num);
if (((MOST_NEGATIVE_FIXNUM * 4) <= u)
&& (u <= (MOST_POSITIVE_FIXNUM * 4 + 3))) {
res = u;
return res;
}
}
# endif
# ifdef BIGDIG
if BIGP(num) {
sizet l = NUMDIGS(num);
ASRTGO(DIGSPERLONG >= l, errout);
res = 0;
for(;l--;) res = BIGUP(res) + BDIGITS(num)[l];
ASRTGO(0<res, errout);
return (tc16_bigpos==TYP16(num) ? res : -res);
}
# endif
errout: wta(num, pos, s_caller);
}
#ifdef FLOATS
double num2dbl(num, pos, s_caller)
SCM num;
char *pos, *s_caller;
{
if INUMP(num) return (double)INUM(num);
ASRTGO(NIMP(num), errout);
if REALP(num) return REALPART(num);
#ifdef BIGDIG
if BIGP(num) return big2dbl(num);
#endif
errout: wta(num, pos, s_caller);
}
#endif
/* Convert (arrays of) strings to SCM */
SCM makfromstr(src, len)
char *src;
sizet len;
{
SCM s;
register char *dst;
s = makstr((long)len);
dst = CHARS(s);
while (len--) *dst++ = *src++;
return s;
}
SCM makfrom0str(src)
char *src;
{
if (!src) return BOOL_F;
return makfromstr(src, (sizet) strlen(src));
}
/* converts C array of strings to SCM list of strings. */
/* If argc < 0, a null terminated array is assumed. */
SCM makfromstrs(argc, argv)
int argc;
char **argv;
{
int i = argc;
SCM lst = EOL;
if (0 > i) for(i = 0; argv[i]; i++);
while (i--) lst = cons(makfrom0str(argv[i]), lst);
return lst;
}
/* Converts SCM list of strings to NULL terminated array of strings. */
/* INTS must be DEFERed around this call and the use of the returned array. */
char **makargvfrmstrs(args, s_name)
SCM args;
char *s_name;
{
char **argv;
int argc = ilength(args);
argv = (char **)must_malloc((1L+argc)*sizeof(char *), s_vector);
for(argc = 0; NNULLP(args); args=CDR(args), ++argc) {
ASSERT(NIMP(CAR(args)) && STRINGP(CAR(args)), CAR(args), ARG2, s_name);
{
sizet len = 1 + LENGTH(CAR(args));
char *dst = (char *)must_malloc((long)len, s_string);
char *src = CHARS(CAR(args));
while (len--) dst[len] = src[len];
argv[argc] = dst;
}
}
argv[argc] = 0;
return argv;
}
void must_free_argv(argv)
char **argv;
{
char **av = argv;
while(!(*av)) free(*(av++));
free(argv);
}
/* Hooks to call SCM from C */
SCM scm_evstr(str)
char *str;
{
SCM lsym;
NEWCELL(lsym);
SETLENGTH(lsym, strlen(str)+0L, tc7_ssymbol);
SETCHARS(lsym, str);
return scm_eval_string(lsym);
}
void scm_ldstr(str)
char *str;
{
SCM lsym;
NEWCELL(lsym);
SETLENGTH(lsym, strlen(str)+0L, tc7_ssymbol);
SETCHARS(lsym, str);
scm_load_string(lsym);
}
int scm_ldfile(path)
char *path;
{
SCM name = makfrom0str(path);
*loc_errobj = name;
return BOOL_F==tryload(name);
}
int scm_ldprog(path)
char *path;
{
SCM name = makfrom0str(path);
*loc_errobj = name;
return
BOOL_F==scm_evstr("(try-load (in-vicinity (program-vicinity) errobj))");
}
/* Get byte address of SCM array */
#ifdef ARRAYS
long aind P((SCM ra, SCM args, char *what));
unsigned long scm_addr(args, s_name)
SCM args;
char *s_name;
{
long pos;
unsigned long ptr = 0; /* gratuitous assignment squelches cc warn. */
SCM v;
ASRTGO(NIMP(args), wna);
v = CAR(args);
args = CDR(args);
if IMP(v) {goto badarg;}
else if ARRAYP(v) {
pos = aind(v, args, s_name);
v = ARRAY_V(v);
}
else {
if NIMP(args) {
ASSERT(CONSP(args) && INUMP(CAR(args)), args, ARG2, s_name);
pos = INUM(CAR(args));
ASRTGO(NULLP(CDR(args)), wna);
}
else if NULLP(args) pos = 0;
else {
ASSERT(INUMP(args), args, ARG2, s_name);
pos = INUM(args);
}
ASRTGO(pos >= 0 && pos < LENGTH(v), outrng);
}
switch TYP7(v) {
case tc7_string:
ptr = (unsigned long)&(CHARS(v)[pos]);
break;
# ifdef FLOATS
# ifdef SINGLES
case tc7_fvect:
ptr = (unsigned long)&(((float *)CDR(v))[pos]);
break;
# endif
case tc7_cvect: pos = 2 * pos;
case tc7_dvect: ptr = (unsigned long)&(((double *)CDR(v))[pos]);
break;
# endif
case tc7_bvect: ASRTGO(0==(pos%LONG_BIT), outrng);
pos = pos/LONG_BIT;
case tc7_uvect:
case tc7_ivect:
case tc7_vector: ptr = (unsigned long)&(VELTS(v)[pos]);
break;
outrng: wta(MAKINUM(pos), (char *)OUTOFRANGE, s_name);
default:
badarg: wta(v, (char *)ARG1, s_name);
wna: wta(UNDEFINED, (char *)WNA, s_name);
}
return ptr;
}
#endif /* ARRAYS */
void init_rope()
{
}
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