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81ba12d7 | 1 | /* Copyright (C) 1995,1996,1997,1999,2000,2001, 2006, 2008, 2009 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
0f2d19dd | 24 | |
a0599745 | 25 | #include "libguile/_scm.h" |
0f2d19dd | 26 | |
a0599745 MD |
27 | #include "libguile/strings.h" |
28 | #include "libguile/vectors.h" | |
0717dfd8 | 29 | #include "libguile/smob.h" |
c88a8162 | 30 | #include "libguile/deprecation.h" |
bdc88419 | 31 | |
a0599745 MD |
32 | #include "libguile/validate.h" |
33 | #include "libguile/procs.h" | |
3fd8807e | 34 | #include "libguile/procprop.h" |
53e28ed9 | 35 | #include "libguile/objcodes.h" |
7e580328 | 36 | #include "libguile/programs.h" |
0f2d19dd JB |
37 | \f |
38 | ||
39 | ||
40 | /* {Procedures} | |
41 | */ | |
42 | ||
9de33deb | 43 | |
ac51e74b | 44 | SCM |
c014a02e | 45 | scm_c_make_subr (const char *name, long type, SCM (*fcn) ()) |
0f2d19dd | 46 | { |
0f2d19dd | 47 | register SCM z; |
17df23e3 | 48 | SCM sname; |
ac51e74b | 49 | SCM *meta_info; |
9de33deb | 50 | |
e0923570 | 51 | meta_info = scm_gc_malloc (2 * sizeof (*meta_info), "subr meta-info"); |
17df23e3 AW |
52 | sname = scm_from_locale_symbol (name); |
53 | meta_info[0] = sname; | |
ac51e74b LC |
54 | meta_info[1] = SCM_EOL; /* properties */ |
55 | ||
56 | z = scm_double_cell ((scm_t_bits) type, (scm_t_bits) fcn, | |
57 | 0 /* generic */, (scm_t_bits) meta_info); | |
9de33deb | 58 | |
17df23e3 AW |
59 | scm_remember_upto_here_1 (sname); |
60 | ||
0f2d19dd JB |
61 | return z; |
62 | } | |
63 | ||
c88a8162 | 64 | SCM |
c014a02e | 65 | scm_c_define_subr (const char *name, long type, SCM (*fcn) ()) |
c88a8162 MV |
66 | { |
67 | SCM subr = scm_c_make_subr (name, type, fcn); | |
ce471ab8 | 68 | scm_define (SCM_SUBR_NAME (subr), subr); |
c88a8162 MV |
69 | return subr; |
70 | } | |
71 | ||
c88a8162 MV |
72 | SCM |
73 | scm_c_make_subr_with_generic (const char *name, | |
c014a02e | 74 | long type, SCM (*fcn) (), SCM *gf) |
0f2d19dd | 75 | { |
c88a8162 | 76 | SCM subr = scm_c_make_subr (name, type, fcn); |
feccd2d3 | 77 | SCM_SET_SUBR_GENERIC_LOC (subr, gf); |
c88a8162 | 78 | return subr; |
0f2d19dd JB |
79 | } |
80 | ||
9de33deb | 81 | SCM |
c88a8162 | 82 | scm_c_define_subr_with_generic (const char *name, |
c014a02e | 83 | long type, SCM (*fcn) (), SCM *gf) |
9de33deb | 84 | { |
c88a8162 | 85 | SCM subr = scm_c_make_subr_with_generic (name, type, fcn, gf); |
ce471ab8 | 86 | scm_define (SCM_SUBR_NAME (subr), subr); |
9de33deb MD |
87 | return subr; |
88 | } | |
89 | ||
9de33deb | 90 | |
3b3b36dd | 91 | SCM_DEFINE (scm_procedure_p, "procedure?", 1, 0, 0, |
8cf97abf MG |
92 | (SCM obj), |
93 | "Return @code{#t} if @var{obj} is a procedure.") | |
1bbd0b84 | 94 | #define FUNC_NAME s_scm_procedure_p |
0f2d19dd JB |
95 | { |
96 | if (SCM_NIMP (obj)) | |
97 | switch (SCM_TYP7 (obj)) | |
98 | { | |
904a077d | 99 | case scm_tcs_struct: |
b6cf4d02 AW |
100 | if (!((SCM_OBJ_CLASS_FLAGS (obj) & SCM_CLASSF_PURE_GENERIC) |
101 | || SCM_STRUCT_APPLICABLE_P (obj))) | |
bdc88419 | 102 | break; |
f36878ba | 103 | case scm_tc7_gsubr: |
2fb924f6 | 104 | case scm_tc7_program: |
0f2d19dd | 105 | return SCM_BOOL_T; |
0717dfd8 | 106 | case scm_tc7_smob: |
7888309b | 107 | return scm_from_bool (SCM_SMOB_DESCRIPTOR (obj).apply); |
0f2d19dd JB |
108 | default: |
109 | return SCM_BOOL_F; | |
110 | } | |
111 | return SCM_BOOL_F; | |
112 | } | |
1bbd0b84 | 113 | #undef FUNC_NAME |
0f2d19dd | 114 | |
3b3b36dd | 115 | SCM_DEFINE (scm_thunk_p, "thunk?", 1, 0, 0, |
8cf97abf MG |
116 | (SCM obj), |
117 | "Return @code{#t} if @var{obj} is a thunk.") | |
1bbd0b84 | 118 | #define FUNC_NAME s_scm_thunk_p |
44bd53b9 | 119 | { |
314b8716 AW |
120 | int req, opt, rest; |
121 | return scm_from_bool (scm_i_procedure_arity (obj, &req, &opt, &rest) | |
122 | && req == 0); | |
44bd53b9 | 123 | } |
1bbd0b84 | 124 | #undef FUNC_NAME |
44bd53b9 | 125 | |
9de33deb MD |
126 | /* Only used internally. */ |
127 | int | |
128 | scm_subr_p (SCM obj) | |
129 | { | |
130 | if (SCM_NIMP (obj)) | |
131 | switch (SCM_TYP7 (obj)) | |
132 | { | |
f36878ba | 133 | case scm_tc7_gsubr: |
9de33deb MD |
134 | return 1; |
135 | default: | |
136 | ; | |
137 | } | |
138 | return 0; | |
139 | } | |
140 | ||
2a0db0e3 AW |
141 | SCM_SYMBOL (sym_documentation, "documentation"); |
142 | ||
3b3b36dd | 143 | SCM_DEFINE (scm_procedure_documentation, "procedure-documentation", 1, 0, 0, |
1bbd0b84 | 144 | (SCM proc), |
b380b885 MD |
145 | "Return the documentation string associated with @code{proc}. By\n" |
146 | "convention, if a procedure contains more than one expression and the\n" | |
147 | "first expression is a string constant, that string is assumed to contain\n" | |
148 | "documentation for that procedure.") | |
1bbd0b84 | 149 | #define FUNC_NAME s_scm_procedure_documentation |
c2c82fba | 150 | { |
314b8716 | 151 | SCM_VALIDATE_PROC (SCM_ARG1, proc); |
2a0db0e3 AW |
152 | if (SCM_PROGRAM_P (proc)) |
153 | return scm_assq_ref (scm_program_properties (proc), sym_documentation); | |
314b8716 AW |
154 | else |
155 | return SCM_BOOL_F; | |
c2c82fba | 156 | } |
1bbd0b84 | 157 | #undef FUNC_NAME |
c2c82fba | 158 | |
0f2d19dd | 159 | |
b4cd6492 MD |
160 | /* Procedure-with-setter |
161 | */ | |
162 | ||
ea68d342 AW |
163 | static SCM pws_vtable; |
164 | ||
165 | ||
a1ec6916 | 166 | SCM_DEFINE (scm_procedure_with_setter_p, "procedure-with-setter?", 1, 0, 0, |
1bbd0b84 | 167 | (SCM obj), |
8cf97abf MG |
168 | "Return @code{#t} if @var{obj} is a procedure with an\n" |
169 | "associated setter procedure.") | |
1bbd0b84 | 170 | #define FUNC_NAME s_scm_procedure_with_setter_p |
b4cd6492 | 171 | { |
ea68d342 | 172 | return scm_from_bool (SCM_STRUCTP (obj) && SCM_STRUCT_SETTER_P (obj)); |
b4cd6492 | 173 | } |
1bbd0b84 | 174 | #undef FUNC_NAME |
b4cd6492 | 175 | |
a1ec6916 | 176 | SCM_DEFINE (scm_make_procedure_with_setter, "make-procedure-with-setter", 2, 0, 0, |
1bbd0b84 | 177 | (SCM procedure, SCM setter), |
8cf97abf MG |
178 | "Create a new procedure which behaves like @var{procedure}, but\n" |
179 | "with the associated setter @var{setter}.") | |
1bbd0b84 | 180 | #define FUNC_NAME s_scm_make_procedure_with_setter |
b4cd6492 | 181 | { |
3fd8807e | 182 | SCM name, ret; |
e1f8eb2b MD |
183 | SCM_VALIDATE_PROC (1, procedure); |
184 | SCM_VALIDATE_PROC (2, setter); | |
ea68d342 AW |
185 | ret = scm_make_struct (pws_vtable, SCM_INUM0, |
186 | scm_list_2 (procedure, setter)); | |
187 | ||
3fd8807e AW |
188 | /* don't use procedure_name, because don't care enough to do a reverse |
189 | lookup */ | |
190 | switch (SCM_TYP7 (procedure)) { | |
f36878ba | 191 | case scm_tc7_gsubr: |
ce471ab8 | 192 | name = SCM_SUBR_NAME (procedure); |
3fd8807e AW |
193 | break; |
194 | default: | |
195 | name = scm_procedure_property (procedure, scm_sym_name); | |
196 | break; | |
197 | } | |
198 | if (scm_is_true (name)) | |
199 | scm_set_procedure_property_x (ret, scm_sym_name, name); | |
200 | return ret; | |
b4cd6492 | 201 | } |
1bbd0b84 | 202 | #undef FUNC_NAME |
b4cd6492 | 203 | |
a1ec6916 | 204 | SCM_DEFINE (scm_procedure, "procedure", 1, 0, 0, |
1bbd0b84 | 205 | (SCM proc), |
ea68d342 AW |
206 | "Return the procedure of @var{proc}, which must be an\n" |
207 | "applicable struct.") | |
1bbd0b84 | 208 | #define FUNC_NAME s_scm_procedure |
b4cd6492 | 209 | { |
e1f8eb2b | 210 | SCM_VALIDATE_NIM (1, proc); |
ea68d342 AW |
211 | SCM_ASSERT (SCM_STRUCT_APPLICABLE_P (proc), proc, SCM_ARG1, FUNC_NAME); |
212 | return SCM_STRUCT_PROCEDURE (proc); | |
b4cd6492 | 213 | } |
1bbd0b84 | 214 | #undef FUNC_NAME |
b4cd6492 | 215 | |
ea68d342 AW |
216 | SCM_PRIMITIVE_GENERIC (scm_setter, "setter", 1, 0, 0, |
217 | (SCM proc), | |
218 | "Return the setter of @var{proc}, which must be an\n" | |
219 | "applicable struct with a setter.") | |
220 | #define FUNC_NAME s_scm_setter | |
b4cd6492 | 221 | { |
ea68d342 AW |
222 | SCM_GASSERT1 (SCM_STRUCTP (proc), g_scm_setter, proc, SCM_ARG1, FUNC_NAME); |
223 | if (SCM_STRUCT_SETTER_P (proc)) | |
224 | return SCM_STRUCT_SETTER (proc); | |
225 | if (SCM_PUREGENERICP (proc)) | |
226 | /* FIXME: might not be an accessor */ | |
227 | return SCM_GENERIC_SETTER (proc); | |
228 | SCM_WTA_DISPATCH_1 (g_scm_setter, proc, SCM_ARG1, FUNC_NAME); | |
b038d983 | 229 | return SCM_BOOL_F; /* not reached */ |
b4cd6492 | 230 | } |
ea68d342 | 231 | #undef FUNC_NAME |
1cc91f1b | 232 | |
ac51e74b | 233 | \f |
0f2d19dd JB |
234 | void |
235 | scm_init_procs () | |
0f2d19dd | 236 | { |
bbd41a6a AW |
237 | pws_vtable = |
238 | scm_c_make_struct (scm_applicable_struct_with_setter_vtable_vtable, | |
239 | 0, | |
240 | 1, | |
241 | SCM_UNPACK (scm_from_locale_symbol ("pwpw"))); | |
ea68d342 | 242 | |
a0599745 | 243 | #include "libguile/procs.x" |
0f2d19dd | 244 | } |
89e00824 ML |
245 | |
246 | /* | |
247 | Local Variables: | |
248 | c-file-style: "gnu" | |
249 | End: | |
250 | */ |