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Diffstat (limited to 'rope.c')
| -rw-r--r-- | rope.c | 335 |
1 files changed, 335 insertions, 0 deletions
@@ -0,0 +1,335 @@ +/* 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() +{ +} |