Commit | Line | Data |
---|---|---|
7dc6e754 | 1 | /* Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
0f2d19dd JB |
41 | \f |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
20e6290e | 45 | #include "genio.h" |
abae3119 | 46 | #include "procprop.h" |
0f2d19dd | 47 | |
20e6290e | 48 | #include "gsubr.h" |
0f2d19dd JB |
49 | \f |
50 | /* | |
51 | * gsubr.c | |
52 | * Provide `gsubrs' -- subrs taking a prescribed number of required, optional, | |
53 | * and rest arguments. | |
54 | */ | |
55 | ||
56 | #include "gsubr.h" | |
57 | ||
952bedad | 58 | /* #define GSUBR_TEST */ |
0f2d19dd | 59 | |
abae3119 | 60 | SCM scm_i_name; |
80ea260c | 61 | SCM scm_i_inner_name; |
dc0938d8 | 62 | SCM scm_f_gsubr_apply; |
1cc91f1b | 63 | |
0f2d19dd JB |
64 | SCM |
65 | scm_make_gsubr(name, req, opt, rst, fcn) | |
3eeba8d4 | 66 | const char *name; |
0f2d19dd JB |
67 | int req; |
68 | int opt; | |
69 | int rst; | |
70 | SCM (*fcn)(); | |
0f2d19dd | 71 | { |
dc0938d8 MD |
72 | switch SCM_GSUBR_MAKTYPE(req, opt, rst) { |
73 | case SCM_GSUBR_MAKTYPE(0, 0, 0): return scm_make_subr(name, scm_tc7_subr_0, fcn); | |
74 | case SCM_GSUBR_MAKTYPE(1, 0, 0): return scm_make_subr(name, scm_tc7_subr_1, fcn); | |
75 | case SCM_GSUBR_MAKTYPE(0, 1, 0): return scm_make_subr(name, scm_tc7_subr_1o, fcn); | |
76 | case SCM_GSUBR_MAKTYPE(1, 1, 0): return scm_make_subr(name, scm_tc7_subr_2o, fcn); | |
77 | case SCM_GSUBR_MAKTYPE(2, 0, 0): return scm_make_subr(name, scm_tc7_subr_2, fcn); | |
78 | case SCM_GSUBR_MAKTYPE(3, 0, 0): return scm_make_subr(name, scm_tc7_subr_3, fcn); | |
79 | case SCM_GSUBR_MAKTYPE(0, 0, 1): return scm_make_subr(name, scm_tc7_lsubr, fcn); | |
80 | case SCM_GSUBR_MAKTYPE(2, 0, 1): return scm_make_subr(name, scm_tc7_lsubr_2, fcn); | |
0f2d19dd JB |
81 | default: |
82 | { | |
83 | SCM symcell = scm_sysintern(name, SCM_UNDEFINED); | |
dc0938d8 | 84 | SCM z, cclo = scm_makcclo(scm_f_gsubr_apply, 3L); |
0f2d19dd | 85 | long tmp = ((((SCM_CELLPTR)(SCM_CAR(symcell)))-scm_heap_org)<<8); |
dc0938d8 | 86 | if (SCM_GSUBR_MAX < req + opt + rst) { |
0f2d19dd JB |
87 | fputs("ERROR in scm_make_gsubr: too many args\n", stderr); |
88 | exit (1); | |
89 | } | |
90 | if ((tmp>>8) != ((SCM_CELLPTR)(SCM_CAR(symcell))-scm_heap_org)) | |
91 | tmp = 0; | |
92 | SCM_NEWCELL(z); | |
93 | SCM_SUBRF(z) = fcn; | |
a6c64c3c | 94 | SCM_SETCAR (z, tmp + scm_tc7_subr_0); |
dc0938d8 MD |
95 | SCM_GSUBR_PROC(cclo) = z; |
96 | SCM_GSUBR_TYPE(cclo) = SCM_MAKINUM(SCM_GSUBR_MAKTYPE(req, opt, rst)); | |
a6c64c3c | 97 | SCM_SETCDR (symcell, cclo); |
abae3119 MD |
98 | #ifdef DEBUG_EXTENSIONS |
99 | if (SCM_REC_PROCNAMES_P) | |
100 | scm_set_procedure_property_x (cclo, scm_i_name, SCM_CAR (symcell)); | |
101 | #endif | |
0f2d19dd JB |
102 | return cclo; |
103 | } | |
104 | } | |
105 | } | |
106 | ||
107 | ||
108 | SCM_PROC(s_gsubr_apply, "gsubr-apply", 0, 0, 1, scm_gsubr_apply); | |
1cc91f1b | 109 | |
0f2d19dd JB |
110 | SCM |
111 | scm_gsubr_apply(args) | |
112 | SCM args; | |
0f2d19dd JB |
113 | { |
114 | SCM self = SCM_CAR(args); | |
dc0938d8 | 115 | SCM (*fcn)() = SCM_SUBRF(SCM_GSUBR_PROC(self)); |
0f2d19dd | 116 | SCM v[10]; /* must agree with greatest supported arity */ |
dc0938d8 MD |
117 | int typ = SCM_INUM(SCM_GSUBR_TYPE(self)); |
118 | int i, n = SCM_GSUBR_REQ(typ) + SCM_GSUBR_OPT(typ) + SCM_GSUBR_REST(typ); | |
adc02cce MD |
119 | #if 0 |
120 | SCM_ASSERT(n <= sizeof(v)/sizeof(SCM), | |
121 | self, "internal programming error", s_gsubr_apply); | |
122 | #endif | |
0f2d19dd | 123 | args = SCM_CDR(args); |
dc0938d8 | 124 | for (i = 0; i < SCM_GSUBR_REQ(typ); i++) { |
cf7c17e9 | 125 | #ifndef SCM_RECKLESS |
0f2d19dd | 126 | if (SCM_IMP(args)) |
dc0938d8 | 127 | wnargs: scm_wrong_num_args (SCM_SNAME(SCM_GSUBR_PROC(self))); |
0f2d19dd JB |
128 | #endif |
129 | v[i] = SCM_CAR(args); | |
130 | args = SCM_CDR(args); | |
131 | } | |
dc0938d8 | 132 | for (; i < SCM_GSUBR_REQ(typ) + SCM_GSUBR_OPT(typ); i++) { |
0f2d19dd JB |
133 | if (SCM_NIMP(args)) { |
134 | v[i] = SCM_CAR(args); | |
135 | args = SCM_CDR(args); | |
136 | } | |
137 | else | |
138 | v[i] = SCM_UNDEFINED; | |
139 | } | |
dc0938d8 | 140 | if (SCM_GSUBR_REST(typ)) |
0f2d19dd | 141 | v[i] = args; |
adc02cce MD |
142 | else |
143 | SCM_ASRTGO(SCM_NULLP(args), wnargs); | |
0f2d19dd | 144 | switch (n) { |
0f2d19dd JB |
145 | case 2: return (*fcn)(v[0], v[1]); |
146 | case 3: return (*fcn)(v[0], v[1], v[2]); | |
147 | case 4: return (*fcn)(v[0], v[1], v[2], v[3]); | |
148 | case 5: return (*fcn)(v[0], v[1], v[2], v[3], v[4]); | |
149 | case 6: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5]); | |
150 | case 7: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6]); | |
151 | case 8: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]); | |
152 | case 9: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8]); | |
153 | case 10: return (*fcn)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8], v[9]); | |
154 | } | |
cda139a7 | 155 | return 0; /* Never reached. */ |
0f2d19dd JB |
156 | } |
157 | ||
158 | ||
159 | #ifdef GSUBR_TEST | |
160 | /* A silly example, taking 2 required args, 1 optional, and | |
161 | a scm_list of rest args | |
162 | */ | |
163 | SCM | |
164 | gsubr_21l(req1, req2, opt, rst) | |
165 | SCM req1, req2, opt, rst; | |
166 | { | |
b7f3516f | 167 | scm_puts ("gsubr-2-1-l:\n req1: ", scm_cur_outp); |
0f2d19dd | 168 | scm_display(req1, scm_cur_outp); |
b7f3516f | 169 | scm_puts ("\n req2: ", scm_cur_outp); |
0f2d19dd | 170 | scm_display(req2, scm_cur_outp); |
b7f3516f | 171 | scm_puts ("\n opt: ", scm_cur_outp); |
0f2d19dd | 172 | scm_display(opt, scm_cur_outp); |
b7f3516f | 173 | scm_puts ("\n rest: ", scm_cur_outp); |
0f2d19dd JB |
174 | scm_display(rst, scm_cur_outp); |
175 | scm_newline(scm_cur_outp); | |
176 | return SCM_UNSPECIFIED; | |
177 | } | |
178 | #endif | |
179 | ||
180 | ||
1cc91f1b | 181 | |
0f2d19dd JB |
182 | void |
183 | scm_init_gsubr() | |
0f2d19dd | 184 | { |
dc0938d8 | 185 | scm_f_gsubr_apply = scm_make_subr(s_gsubr_apply, scm_tc7_lsubr, scm_gsubr_apply); |
abae3119 MD |
186 | scm_i_name = SCM_CAR (scm_sysintern ("name", SCM_UNDEFINED)); |
187 | scm_permanent_object (scm_i_name); | |
80ea260c MD |
188 | scm_i_inner_name = SCM_CAR (scm_sysintern ("inner-name", SCM_UNDEFINED)); |
189 | scm_permanent_object (scm_i_inner_name); | |
0f2d19dd JB |
190 | #ifdef GSUBR_TEST |
191 | scm_make_gsubr("gsubr-2-1-l", 2, 1, 1, gsubr_21l); /* example */ | |
192 | #endif | |
193 | } |