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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef EVALH | |
4 | #define EVALH | |
78a0461a | 5 | /* Copyright (C) 1995, 1996 ,1998, 1999 Free Software Foundation, Inc. |
0f2d19dd JB |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
19 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
20 | * Boston, MA 02111-1307 USA | |
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21 | * |
22 | * As a special exception, the Free Software Foundation gives permission | |
23 | * for additional uses of the text contained in its release of GUILE. | |
24 | * | |
25 | * The exception is that, if you link the GUILE library with other files | |
26 | * to produce an executable, this does not by itself cause the | |
27 | * resulting executable to be covered by the GNU General Public License. | |
28 | * Your use of that executable is in no way restricted on account of | |
29 | * linking the GUILE library code into it. | |
30 | * | |
31 | * This exception does not however invalidate any other reasons why | |
32 | * the executable file might be covered by the GNU General Public License. | |
33 | * | |
34 | * This exception applies only to the code released by the | |
35 | * Free Software Foundation under the name GUILE. If you copy | |
36 | * code from other Free Software Foundation releases into a copy of | |
37 | * GUILE, as the General Public License permits, the exception does | |
38 | * not apply to the code that you add in this way. To avoid misleading | |
39 | * anyone as to the status of such modified files, you must delete | |
40 | * this exception notice from them. | |
41 | * | |
42 | * If you write modifications of your own for GUILE, it is your choice | |
43 | * whether to permit this exception to apply to your modifications. | |
82892bed | 44 | * If you do not wish that, delete this exception notice. */ |
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45 | \f |
46 | ||
b4309c3c | 47 | #include "libguile/__scm.h" |
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48 | |
49 | \f | |
50 | ||
33b97402 MD |
51 | /* {Options} |
52 | */ | |
53 | ||
54 | extern scm_option scm_eval_opts[]; | |
55 | ||
56 | #define SCM_EVAL_STACK scm_eval_opts[0].val | |
57 | #define SCM_N_EVAL_OPTIONS 1 | |
58 | ||
2c2b0670 | 59 | extern int scm_eval_stack; |
a74145b8 | 60 | |
33b97402 MD |
61 | extern scm_option scm_evaluator_trap_table[]; |
62 | ||
7866a09b | 63 | extern SCM scm_eval_options_interface (SCM setting); |
38b9c0c3 | 64 | |
066dacf8 MD |
65 | #define SCM_TRAPS_P scm_evaluator_trap_table[0].val |
66 | #define SCM_ENTER_FRAME_P scm_evaluator_trap_table[1].val | |
67 | #define SCM_APPLY_FRAME_P scm_evaluator_trap_table[2].val | |
68 | #define SCM_EXIT_FRAME_P scm_evaluator_trap_table[3].val | |
69 | #define SCM_N_EVALUATOR_TRAPS 4 | |
33b97402 MD |
70 | |
71 | \f | |
72 | ||
0f2d19dd JB |
73 | /* {Ilocs} |
74 | * | |
75 | * Ilocs are relative pointers into local environment structures. | |
76 | * | |
77 | */ | |
78 | #define SCM_ILOCP(n) (SCM_ITAG8(n)==scm_tc8_iloc) | |
79 | #define SCM_ILOC00 SCM_MAKE_ITAG8(0L, scm_tc8_iloc) | |
80 | #define SCM_IDINC (0x00100000L) | |
81 | #define SCM_ICDR (0x00080000L) | |
82 | #define SCM_IFRINC (0x00000100L) | |
83 | #define SCM_IDSTMSK (-SCM_IDINC) | |
84 | #define SCM_IFRAME(n) ((int)((SCM_ICDR-SCM_IFRINC)>>8) & ((int)(n)>>8)) | |
85 | #define SCM_IDIST(n) (((unsigned long)(n))>>20) | |
f1267706 | 86 | #define SCM_ICDRP(n) (SCM_ICDR & SCM_UNPACK(n)) |
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87 | |
88 | \f | |
89 | ||
90 | ||
8d1e7f8c MD |
91 | /* {Evaluator} |
92 | * | |
93 | * For an explanation of symbols containing "EVAL", see beginning of eval.c. | |
94 | */ | |
2a758f6f | 95 | #ifdef MEMOIZE_LOCALS |
e1e11745 | 96 | #define SCM_EVALIM(x, env) (SCM_ILOCP (x) ? *scm_ilookup ((x), env) : x) |
2a758f6f MD |
97 | #else |
98 | #define SCM_EVALIM(x, env) x | |
99 | #endif | |
0f2d19dd | 100 | #ifdef DEBUG_EXTENSIONS |
e1e11745 MD |
101 | #define SCM_XEVAL(x, env) (SCM_IMP (x) \ |
102 | ? (x) \ | |
103 | : (*scm_ceval_ptr) ((x), (env))) | |
104 | #define SCM_XEVALCAR(x, env) (SCM_NCELLP (SCM_CAR (x)) \ | |
105 | ? (SCM_IMP (SCM_CAR (x)) \ | |
106 | ? SCM_EVALIM (SCM_CAR (x), env) \ | |
107 | : SCM_GLOC_VAL (SCM_CAR (x))) \ | |
108 | : (SCM_SYMBOLP (SCM_CAR (x)) \ | |
109 | ? *scm_lookupcar (x, env, 1) \ | |
110 | : (*scm_ceval_ptr) (SCM_CAR (x), env))) | |
0f2d19dd | 111 | #else |
e1e11745 MD |
112 | #define SCM_XEVAL(x, env) (SCM_IMP (x) ? (x) : scm_ceval ((x), (env))) |
113 | #define SCM_XEVALCAR(x, env) EVALCAR (x, env) | |
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114 | #endif /* DEBUG_EXTENSIONS */ |
115 | ||
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116 | \f |
117 | ||
e2806c10 | 118 | #define SCM_EXTEND_ENV scm_acons |
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119 | |
120 | \f | |
3eeba8d4 JB |
121 | extern const char scm_s_expression[]; |
122 | extern const char scm_s_test[]; | |
123 | extern const char scm_s_body[]; | |
124 | extern const char scm_s_bindings[]; | |
125 | extern const char scm_s_variable[]; | |
126 | extern const char scm_s_clauses[]; | |
127 | extern const char scm_s_formals[]; | |
79dc2f37 | 128 | extern const char scm_s_set_x[]; |
2a758f6f | 129 | |
2f0d1375 MD |
130 | extern SCM scm_sym_and; |
131 | extern SCM scm_sym_begin; | |
132 | extern SCM scm_sym_case; | |
133 | extern SCM scm_sym_cond; | |
134 | extern SCM scm_sym_define; | |
135 | extern SCM scm_sym_do; | |
136 | extern SCM scm_sym_if; | |
137 | extern SCM scm_sym_lambda; | |
138 | extern SCM scm_sym_let; | |
139 | extern SCM scm_sym_letstar; | |
140 | extern SCM scm_sym_letrec; | |
141 | extern SCM scm_sym_quote; | |
142 | extern SCM scm_sym_quasiquote; | |
143 | extern SCM scm_sym_unquote; | |
144 | extern SCM scm_sym_uq_splicing; | |
145 | ||
146 | extern SCM scm_sym_dot; | |
147 | extern SCM scm_sym_atapply; | |
148 | extern SCM scm_sym_atcall_cc; | |
6b10ed8b | 149 | extern SCM scm_sym_delay; |
2f0d1375 MD |
150 | extern SCM scm_sym_arrow; |
151 | extern SCM scm_sym_else; | |
152 | extern SCM scm_sym_apply; | |
79dc2f37 | 153 | extern SCM scm_sym_set_x; |
df061ffc | 154 | extern SCM scm_sym_args; |
0f2d19dd | 155 | |
81123e6d MD |
156 | extern SCM scm_f_apply; |
157 | ||
7332df66 | 158 | extern long scm_tc16_macro; |
0f2d19dd JB |
159 | |
160 | /* A resolved global variable reference in the CAR position | |
161 | * of a list is stored (in code only) as a pointer to a pair with a | |
162 | * tag of 1. This is called a "gloc". | |
163 | */ | |
164 | ||
165 | #define SCM_GLOC_SYM(x) (SCM_CAR((x)-1L)) | |
166 | #define SCM_GLOC_VAL(x) (SCM_CDR((x)-1L)) | |
e6d34cb6 | 167 | #define SCM_GLOC_VAL_LOC(x) (SCM_CDRLOC((x)-1L)) |
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168 | |
169 | \f | |
1cc91f1b | 170 | |
7866a09b GB |
171 | extern SCM * scm_ilookup (SCM iloc, SCM env); |
172 | extern SCM * scm_lookupcar (SCM vloc, SCM genv, int check); | |
173 | extern SCM scm_unmemocar (SCM form, SCM env); | |
174 | extern SCM scm_unmemocopy (SCM form, SCM env); | |
175 | extern SCM scm_eval_car (SCM pair, SCM env); | |
9de33deb | 176 | extern SCM scm_eval_body (SCM code, SCM env); |
7866a09b GB |
177 | extern SCM scm_eval_args (SCM i, SCM env, SCM proc); |
178 | extern SCM scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc); | |
179 | extern SCM scm_m_quote (SCM xorig, SCM env); | |
180 | extern SCM scm_m_begin (SCM xorig, SCM env); | |
181 | extern SCM scm_m_if (SCM xorig, SCM env); | |
182 | extern SCM scm_m_set_x (SCM xorig, SCM env); | |
183 | extern SCM scm_m_vref (SCM xorig, SCM env); | |
184 | extern SCM scm_m_vset (SCM xorig, SCM env); | |
185 | extern SCM scm_m_and (SCM xorig, SCM env); | |
186 | extern SCM scm_m_or (SCM xorig, SCM env); | |
187 | extern SCM scm_m_case (SCM xorig, SCM env); | |
188 | extern SCM scm_m_cond (SCM xorig, SCM env); | |
189 | extern SCM scm_m_lambda (SCM xorig, SCM env); | |
190 | extern SCM scm_m_letstar (SCM xorig, SCM env); | |
191 | extern SCM scm_m_do (SCM xorig, SCM env); | |
192 | extern SCM scm_m_quasiquote (SCM xorig, SCM env); | |
193 | extern SCM scm_m_delay (SCM xorig, SCM env); | |
194 | extern SCM scm_m_define (SCM x, SCM env); | |
195 | extern SCM scm_m_letrec (SCM xorig, SCM env); | |
196 | extern SCM scm_m_let (SCM xorig, SCM env); | |
197 | extern SCM scm_m_apply (SCM xorig, SCM env); | |
198 | extern SCM scm_m_cont (SCM xorig, SCM env); | |
294b1b2e MD |
199 | extern SCM scm_m_nil_cond (SCM xorig, SCM env); |
200 | extern SCM scm_m_nil_ify (SCM xorig, SCM env); | |
201 | extern SCM scm_m_t_ify (SCM xorig, SCM env); | |
202 | extern SCM scm_m_0_cond (SCM xorig, SCM env); | |
203 | extern SCM scm_m_0_ify (SCM xorig, SCM env); | |
204 | extern SCM scm_m_1_ify (SCM xorig, SCM env); | |
205 | extern SCM scm_m_atfop (SCM xorig, SCM env); | |
206 | extern SCM scm_m_atbind (SCM xorig, SCM env); | |
7866a09b GB |
207 | extern int scm_badargsp (SCM formals, SCM args); |
208 | extern SCM scm_ceval (SCM x, SCM env); | |
209 | extern SCM scm_deval (SCM x, SCM env); | |
210 | extern SCM scm_nconc2last (SCM lst); | |
211 | extern SCM scm_apply (SCM proc, SCM arg1, SCM args); | |
212 | extern SCM scm_dapply (SCM proc, SCM arg1, SCM args); | |
213 | extern SCM scm_m_expand_body (SCM xorig, SCM env); | |
214 | extern SCM scm_macroexp (SCM x, SCM env); | |
215 | extern SCM scm_map (SCM proc, SCM arg1, SCM args); | |
216 | extern SCM scm_for_each (SCM proc, SCM arg1, SCM args); | |
217 | extern SCM scm_closure (SCM code, SCM env); | |
218 | extern SCM scm_makprom (SCM code); | |
219 | extern SCM scm_force (SCM x); | |
220 | extern SCM scm_promise_p (SCM x); | |
de3ca191 | 221 | extern SCM scm_cons_source (SCM xorig, SCM x, SCM y); |
7866a09b GB |
222 | extern SCM scm_copy_tree (SCM obj); |
223 | extern SCM scm_eval_3 (SCM obj, int copyp, SCM env); | |
224 | extern SCM scm_eval2 (SCM obj, SCM env_thunk); | |
225 | extern SCM scm_eval (SCM obj); | |
226 | extern SCM scm_eval_x (SCM obj); | |
227 | extern void scm_init_eval (void); | |
0f2d19dd JB |
228 | |
229 | #endif /* EVALH */ | |
89e00824 ML |
230 | |
231 | /* | |
232 | Local Variables: | |
233 | c-file-style: "gnu" | |
234 | End: | |
235 | */ |