Commit | Line | Data |
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e20d7001 | 1 | /* Copyright (C) 1998,1999,2000,2001,2002,2003, 2006, 2008, 2009 Free Software Foundation, Inc. |
40cf7e92 | 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. | |
40cf7e92 | 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. | |
40cf7e92 | 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 | |
40cf7e92 | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
40cf7e92 | 24 | |
a0599745 MD |
25 | #include "libguile/_scm.h" |
26 | #include "libguile/eval.h" | |
7e73eaee | 27 | #include "libguile/fluids.h" |
f58c472a | 28 | #include "libguile/modules.h" |
40cf7e92 | 29 | |
a0599745 MD |
30 | #include "libguile/validate.h" |
31 | #include "libguile/evalext.h" | |
40cf7e92 | 32 | |
5ec1d2c8 | 33 | SCM_DEFINE (scm_defined_p, "defined?", 1, 1, 0, |
1bbd0b84 | 34 | (SCM sym, SCM env), |
67dc6a4e | 35 | "Return @code{#t} if @var{sym} is defined in the lexical " |
826e91f3 MV |
36 | "environment @var{env}. When @var{env} is not specified, " |
37 | "look in the top-level environment as defined by the " | |
67dc6a4e | 38 | "current module.") |
5ec1d2c8 | 39 | #define FUNC_NAME s_scm_defined_p |
40cf7e92 | 40 | { |
86d31dfe | 41 | SCM var; |
40cf7e92 | 42 | |
34d19ef6 | 43 | SCM_VALIDATE_SYMBOL (1, sym); |
40cf7e92 | 44 | |
b325a6c8 | 45 | if (SCM_UNBNDP (env)) |
86d31dfe MV |
46 | var = scm_sym2var (sym, scm_current_module_lookup_closure (), |
47 | SCM_BOOL_F); | |
b325a6c8 MD |
48 | else |
49 | { | |
50 | SCM frames = env; | |
51 | register SCM b; | |
52 | for (; SCM_NIMP (frames); frames = SCM_CDR (frames)) | |
53 | { | |
d2e53ed6 | 54 | SCM_ASSERT (scm_is_pair (frames), env, SCM_ARG2, FUNC_NAME); |
b325a6c8 | 55 | b = SCM_CAR (frames); |
7888309b | 56 | if (scm_is_true (scm_procedure_p (b))) |
b325a6c8 | 57 | break; |
d2e53ed6 | 58 | SCM_ASSERT (scm_is_pair (b), env, SCM_ARG2, FUNC_NAME); |
b325a6c8 MD |
59 | for (b = SCM_CAR (b); SCM_NIMP (b); b = SCM_CDR (b)) |
60 | { | |
d2e53ed6 | 61 | if (!scm_is_pair (b)) |
b325a6c8 | 62 | { |
bc36d050 | 63 | if (scm_is_eq (b, sym)) |
b325a6c8 MD |
64 | return SCM_BOOL_T; |
65 | else | |
66 | break; | |
67 | } | |
bc36d050 | 68 | if (scm_is_eq (SCM_CAR (b), sym)) |
b325a6c8 MD |
69 | return SCM_BOOL_T; |
70 | } | |
71 | } | |
86d31dfe MV |
72 | var = scm_sym2var (sym, |
73 | SCM_NIMP (frames) ? SCM_CAR (frames) : SCM_BOOL_F, | |
74 | SCM_BOOL_F); | |
b325a6c8 MD |
75 | } |
76 | ||
7888309b | 77 | return (scm_is_false (var) || SCM_UNBNDP (SCM_VARIABLE_REF (var)) |
b325a6c8 MD |
78 | ? SCM_BOOL_F |
79 | : SCM_BOOL_T); | |
40cf7e92 | 80 | } |
1bbd0b84 | 81 | #undef FUNC_NAME |
40cf7e92 | 82 | |
63dd3413 | 83 | |
1bbd0b84 | 84 | SCM_REGISTER_PROC (s_map_in_order, "map-in-order", 2, 0, 1, scm_map); |
285302e1 | 85 | |
f58c472a | 86 | |
93f26b7b MD |
87 | SCM_DEFINE (scm_self_evaluating_p, "self-evaluating?", 1, 0, 0, |
88 | (SCM obj), | |
89 | "Return #t for objects which Guile considers self-evaluating") | |
90 | #define FUNC_NAME s_scm_self_evaluating_p | |
91 | { | |
92 | switch (SCM_ITAG3 (obj)) | |
93 | { | |
94 | case scm_tc3_int_1: | |
95 | case scm_tc3_int_2: | |
96 | /* inum */ | |
97 | return SCM_BOOL_T; | |
98 | case scm_tc3_imm24: | |
99 | /* characters, booleans, other immediates */ | |
d2e53ed6 | 100 | return scm_from_bool (!scm_is_null (obj)); |
93f26b7b MD |
101 | case scm_tc3_cons: |
102 | switch (SCM_TYP7 (obj)) | |
103 | { | |
104 | case scm_tcs_closures: | |
105 | case scm_tc7_vector: | |
106 | case scm_tc7_wvect: | |
534c55a9 | 107 | case scm_tc7_number: |
93f26b7b MD |
108 | case scm_tc7_string: |
109 | case scm_tc7_smob: | |
93f26b7b MD |
110 | case scm_tc7_pws: |
111 | case scm_tcs_subrs: | |
112 | case scm_tcs_struct: | |
113 | return SCM_BOOL_T; | |
114 | default: | |
115 | return SCM_BOOL_F; | |
116 | } | |
117 | } | |
118 | SCM_MISC_ERROR ("Internal error: Object ~S has unknown type", | |
119 | scm_list_1 (obj)); | |
120 | return SCM_UNSPECIFIED; /* never reached */ | |
121 | } | |
122 | #undef FUNC_NAME | |
123 | ||
40cf7e92 MD |
124 | void |
125 | scm_init_evalext () | |
126 | { | |
a0599745 | 127 | #include "libguile/evalext.x" |
40cf7e92 | 128 | } |
89e00824 ML |
129 | |
130 | /* | |
131 | Local Variables: | |
132 | c-file-style: "gnu" | |
133 | End: | |
134 | */ |