Commit | Line | Data |
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5cb22e96 | 1 | /* Copyright (C) 1998,1999,2000,2001,2002,2003 Free Software Foundation, Inc. |
40cf7e92 | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
40cf7e92 | 7 | * |
73be1d9e MV |
8 | * This library 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 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 | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
40cf7e92 MD |
19 | \f |
20 | ||
a0599745 MD |
21 | #include "libguile/_scm.h" |
22 | #include "libguile/eval.h" | |
7e73eaee | 23 | #include "libguile/fluids.h" |
f58c472a | 24 | #include "libguile/modules.h" |
40cf7e92 | 25 | |
a0599745 MD |
26 | #include "libguile/validate.h" |
27 | #include "libguile/evalext.h" | |
40cf7e92 | 28 | |
5ec1d2c8 | 29 | SCM_DEFINE (scm_defined_p, "defined?", 1, 1, 0, |
1bbd0b84 | 30 | (SCM sym, SCM env), |
67dc6a4e | 31 | "Return @code{#t} if @var{sym} is defined in the lexical " |
826e91f3 MV |
32 | "environment @var{env}. When @var{env} is not specified, " |
33 | "look in the top-level environment as defined by the " | |
67dc6a4e | 34 | "current module.") |
5ec1d2c8 | 35 | #define FUNC_NAME s_scm_defined_p |
40cf7e92 | 36 | { |
86d31dfe | 37 | SCM var; |
40cf7e92 | 38 | |
34d19ef6 | 39 | SCM_VALIDATE_SYMBOL (1, sym); |
40cf7e92 | 40 | |
b325a6c8 | 41 | if (SCM_UNBNDP (env)) |
86d31dfe MV |
42 | var = scm_sym2var (sym, scm_current_module_lookup_closure (), |
43 | SCM_BOOL_F); | |
b325a6c8 MD |
44 | else |
45 | { | |
46 | SCM frames = env; | |
47 | register SCM b; | |
48 | for (; SCM_NIMP (frames); frames = SCM_CDR (frames)) | |
49 | { | |
1bbd0b84 | 50 | SCM_ASSERT (SCM_CONSP (frames), env, SCM_ARG2, FUNC_NAME); |
b325a6c8 | 51 | b = SCM_CAR (frames); |
5cb22e96 | 52 | if (!SCM_FALSEP (scm_procedure_p (b))) |
b325a6c8 | 53 | break; |
c1bfcf60 | 54 | SCM_ASSERT (SCM_CONSP (b), env, SCM_ARG2, FUNC_NAME); |
b325a6c8 MD |
55 | for (b = SCM_CAR (b); SCM_NIMP (b); b = SCM_CDR (b)) |
56 | { | |
5cb22e96 | 57 | if (!SCM_CONSP (b)) |
b325a6c8 | 58 | { |
54778cd3 | 59 | if (SCM_EQ_P (b, sym)) |
b325a6c8 MD |
60 | return SCM_BOOL_T; |
61 | else | |
62 | break; | |
63 | } | |
54778cd3 | 64 | if (SCM_EQ_P (SCM_CAR (b), sym)) |
b325a6c8 MD |
65 | return SCM_BOOL_T; |
66 | } | |
67 | } | |
86d31dfe MV |
68 | var = scm_sym2var (sym, |
69 | SCM_NIMP (frames) ? SCM_CAR (frames) : SCM_BOOL_F, | |
70 | SCM_BOOL_F); | |
b325a6c8 MD |
71 | } |
72 | ||
86d31dfe | 73 | return (SCM_FALSEP (var) || SCM_UNBNDP (SCM_VARIABLE_REF (var)) |
b325a6c8 MD |
74 | ? SCM_BOOL_F |
75 | : SCM_BOOL_T); | |
40cf7e92 | 76 | } |
1bbd0b84 | 77 | #undef FUNC_NAME |
40cf7e92 | 78 | |
63dd3413 | 79 | |
1bbd0b84 | 80 | SCM_REGISTER_PROC (s_map_in_order, "map-in-order", 2, 0, 1, scm_map); |
285302e1 | 81 | |
f58c472a | 82 | |
93f26b7b MD |
83 | SCM_DEFINE (scm_self_evaluating_p, "self-evaluating?", 1, 0, 0, |
84 | (SCM obj), | |
85 | "Return #t for objects which Guile considers self-evaluating") | |
86 | #define FUNC_NAME s_scm_self_evaluating_p | |
87 | { | |
88 | switch (SCM_ITAG3 (obj)) | |
89 | { | |
90 | case scm_tc3_int_1: | |
91 | case scm_tc3_int_2: | |
92 | /* inum */ | |
93 | return SCM_BOOL_T; | |
94 | case scm_tc3_imm24: | |
95 | /* characters, booleans, other immediates */ | |
96 | return SCM_BOOL (!SCM_NULLP (obj)); | |
97 | case scm_tc3_cons: | |
98 | switch (SCM_TYP7 (obj)) | |
99 | { | |
100 | case scm_tcs_closures: | |
101 | case scm_tc7_vector: | |
102 | case scm_tc7_wvect: | |
9e443ab6 | 103 | #if SCM_HAVE_ARRAYS |
93f26b7b MD |
104 | case scm_tc7_bvect: |
105 | case scm_tc7_byvect: | |
106 | case scm_tc7_svect: | |
107 | case scm_tc7_ivect: | |
108 | case scm_tc7_uvect: | |
109 | case scm_tc7_fvect: | |
110 | case scm_tc7_dvect: | |
111 | case scm_tc7_cvect: | |
65fb6c49 | 112 | #if SCM_SIZEOF_LONG_LONG != 0 |
93f26b7b MD |
113 | case scm_tc7_llvect: |
114 | #endif | |
115 | #endif | |
534c55a9 | 116 | case scm_tc7_number: |
93f26b7b MD |
117 | case scm_tc7_string: |
118 | case scm_tc7_smob: | |
119 | case scm_tc7_cclo: | |
120 | case scm_tc7_pws: | |
121 | case scm_tcs_subrs: | |
122 | case scm_tcs_struct: | |
123 | return SCM_BOOL_T; | |
124 | default: | |
125 | return SCM_BOOL_F; | |
126 | } | |
127 | } | |
128 | SCM_MISC_ERROR ("Internal error: Object ~S has unknown type", | |
129 | scm_list_1 (obj)); | |
130 | return SCM_UNSPECIFIED; /* never reached */ | |
131 | } | |
132 | #undef FUNC_NAME | |
133 | ||
40cf7e92 MD |
134 | void |
135 | scm_init_evalext () | |
136 | { | |
a0599745 | 137 | #include "libguile/evalext.x" |
40cf7e92 | 138 | } |
89e00824 ML |
139 | |
140 | /* | |
141 | Local Variables: | |
142 | c-file-style: "gnu" | |
143 | End: | |
144 | */ |