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[bpt/guile.git] / libguile / eval.h
CommitLineData
0f2d19dd
JB		 1/* classes: h_files */
2
22a52da1
DH		 3#ifndef SCM_EVAL_H
4#define SCM_EVAL_H
8c494e99 5
a98e8e98 6/* Copyright (C) 1995,1996,1998,1999,2000,2001,2002,2003 Free Software Foundation, Inc.
8c494e99 7 *
73be1d9e
MV		 8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
8c494e99 12 *
73be1d9e 13 * This library is distributed in the hope that it will be useful,
0f2d19dd 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
73be1d9e
MV		 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
8c494e99 17 *
73be1d9e
MV		 18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
8c494e99 22
0f2d19dd
JB		 23\f
24
b4309c3c 25#include "libguile/__scm.h"
0f2d19dd 26
9981de3a 27#include "libguile/struct.h"
37607b5a 28
0f2d19dd
JB		 29\f
30
33b97402
MD		 31/* {Options}
32 */
33
33b001fd 34SCM_API scm_t_option scm_eval_opts[];
33b97402 35
a98e8e98 36#define SCM_EVAL_STACK scm_eval_opts[0].val
33b97402
MD		 37#define SCM_N_EVAL_OPTIONS 1
38
33b001fd 39SCM_API long scm_eval_stack;
a74145b8 40
33b001fd 41SCM_API scm_t_option scm_evaluator_trap_table[];
33b97402 42
33b001fd 43SCM_API SCM scm_eval_options_interface (SCM setting);
38b9c0c3 44
066dacf8
MD		 45#define SCM_TRAPS_P scm_evaluator_trap_table[0].val
46#define SCM_ENTER_FRAME_P scm_evaluator_trap_table[1].val
47#define SCM_APPLY_FRAME_P scm_evaluator_trap_table[2].val
48#define SCM_EXIT_FRAME_P scm_evaluator_trap_table[3].val
a98e8e98
DH		 49#define SCM_ENTER_FRAME_HDLR (SCM_PACK (scm_evaluator_trap_table[4].val))
50#define SCM_APPLY_FRAME_HDLR (SCM_PACK (scm_evaluator_trap_table[5].val))
51#define SCM_EXIT_FRAME_HDLR (SCM_PACK (scm_evaluator_trap_table[6].val))
d95c0b76 52#define SCM_N_EVALUATOR_TRAPS 7
33b97402
MD		 53
54\f
55
0f2d19dd
JB		 56/* {Ilocs}
57 *
58 * Ilocs are relative pointers into local environment structures.
59 *
60 */
61#define SCM_ILOCP(n) (SCM_ITAG8(n)==scm_tc8_iloc)
62#define SCM_ILOC00 SCM_MAKE_ITAG8(0L, scm_tc8_iloc)
63#define SCM_IDINC (0x00100000L)
64#define SCM_ICDR (0x00080000L)
65#define SCM_IFRINC (0x00000100L)
66#define SCM_IDSTMSK (-SCM_IDINC)
c014a02e
ML		 67#define SCM_IFRAME(n) ((long)((SCM_ICDR-SCM_IFRINC)>>8) \
68 & (SCM_UNPACK (n) >> 8))
b0c54567
DH		 69#define SCM_IDIST(n) (SCM_UNPACK (n) >> 20)
70#define SCM_ICDRP(n) (SCM_ICDR & SCM_UNPACK (n))
a8a19efc
DH		 71#define SCM_MAKE_ILOC(frame_nr, binding_nr, last_p) \
72 SCM_PACK ( \
73 ((frame_nr) << 8) \
74 + ((binding_nr) << 20) \
75 + ((last_p) ? SCM_ICDR : 0) \
76 + scm_tc8_iloc )
0f2d19dd
JB		 77
78\f
79
28d52ebb
MD		 80/* {Promises}
81 */
82
83#define SCM_F_PROMISE_COMPUTED (1L << 16)
84#define SCM_PROMISE_COMPUTED_P(promise) \
85 (SCM_F_PROMISE_COMPUTED & SCM_CELL_WORD_0 (promise))
86#define SCM_SET_PROMISE_COMPUTED(promise) \
87 SCM_SET_CELL_WORD_0 (promise, scm_tc16_promise | SCM_F_PROMISE_COMPUTED)
88#define SCM_PROMISE_MUTEX(promise) \
89 ((scm_t_rec_mutex *) SCM_CELL_WORD_2 (promise))
90#define SCM_PROMISE_DATA SCM_CELL_OBJECT_1
91#define SCM_SET_PROMISE_DATA SCM_SET_CELL_OBJECT_1
92SCM_API scm_t_bits scm_tc16_promise;
93
94\f
0f2d19dd 95
8d1e7f8c
MD		 96/* {Evaluator}
97 *
98 * For an explanation of symbols containing "EVAL", see beginning of eval.c.
99 */
729dbac3
DH		 100#define SCM_EVALIM2(x) \
101 ((SCM_EQ_P ((x), SCM_EOL) \
102 ? scm_misc_error (NULL, scm_s_expression, SCM_EOL), 0 \
103 : 0), \
104 (x))
5280aaca
MV		 105#define SCM_EVALIM(x, env) (SCM_ILOCP (x) \
106 ? *scm_ilookup ((x), env) \
107 : SCM_EVALIM2(x))
e1e11745 108#define SCM_XEVAL(x, env) (SCM_IMP (x) \
5280aaca 109 ? SCM_EVALIM2(x) \
e1e11745 110 : (*scm_ceval_ptr) ((x), (env)))
8c494e99 111#define SCM_XEVALCAR(x, env) (SCM_IMP (SCM_CAR (x)) \
904a077d 112 ? SCM_EVALIM (SCM_CAR (x), env) \
e1e11745
MD		 113 : (SCM_SYMBOLP (SCM_CAR (x)) \
114 ? *scm_lookupcar (x, env, 1) \
115 : (*scm_ceval_ptr) (SCM_CAR (x), env)))
0f2d19dd 116
756414cf 117typedef SCM (*scm_t_trampoline_0) (SCM proc);
504d99c5
MD		 118typedef SCM (*scm_t_trampoline_1) (SCM proc, SCM arg1);
119typedef SCM (*scm_t_trampoline_2) (SCM proc, SCM arg1, SCM arg2);
120
0f2d19dd
JB		 121\f
122
e2806c10 123#define SCM_EXTEND_ENV scm_acons
0f2d19dd 124
37607b5a 125/*fixme* This should probably be removed throught the code. */
a0ea2bf0 126
86d31dfe 127#define SCM_TOP_LEVEL_LOOKUP_CLOSURE (scm_current_module_lookup_closure())
37607b5a 128
0f2d19dd 129\f
a98e8e98 130
33b001fd
MV		 131SCM_API const char scm_s_expression[];
132SCM_API const char scm_s_test[];
133SCM_API const char scm_s_body[];
134SCM_API const char scm_s_bindings[];
135SCM_API const char scm_s_variable[];
136SCM_API const char scm_s_clauses[];
137SCM_API const char scm_s_formals[];
2a758f6f 138
33b001fd
MV		 139SCM_API SCM scm_sym_and;
140SCM_API SCM scm_sym_begin;
141SCM_API SCM scm_sym_case;
142SCM_API SCM scm_sym_cond;
143SCM_API SCM scm_sym_define;
144SCM_API SCM scm_sym_do;
145SCM_API SCM scm_sym_if;
146SCM_API SCM scm_sym_lambda;
147SCM_API SCM scm_sym_let;
148SCM_API SCM scm_sym_letstar;
149SCM_API SCM scm_sym_letrec;
150SCM_API SCM scm_sym_quote;
151SCM_API SCM scm_sym_quasiquote;
152SCM_API SCM scm_sym_unquote;
153SCM_API SCM scm_sym_uq_splicing;
2f0d1375 154
33b001fd
MV		 155SCM_API SCM scm_sym_dot;
156SCM_API SCM scm_sym_atapply;
157SCM_API SCM scm_sym_atcall_cc;
158SCM_API SCM scm_sym_at_call_with_values;
159SCM_API SCM scm_sym_delay;
160SCM_API SCM scm_sym_arrow;
161SCM_API SCM scm_sym_else;
162SCM_API SCM scm_sym_apply;
163SCM_API SCM scm_sym_set_x;
164SCM_API SCM scm_sym_args;
0f2d19dd 165
0f2d19dd 166\f
1cc91f1b 167
33b001fd
MV		 168SCM_API SCM * scm_ilookup (SCM iloc, SCM env);
169SCM_API SCM * scm_lookupcar (SCM vloc, SCM genv, int check);
170SCM_API SCM scm_unmemocar (SCM form, SCM env);
171SCM_API SCM scm_unmemocopy (SCM form, SCM env);
172SCM_API SCM scm_eval_car (SCM pair, SCM env);
173SCM_API SCM scm_eval_body (SCM code, SCM env);
174SCM_API SCM scm_eval_args (SCM i, SCM env, SCM proc);
33b001fd
MV		 175SCM_API SCM scm_m_quote (SCM xorig, SCM env);
176SCM_API SCM scm_m_begin (SCM xorig, SCM env);
177SCM_API SCM scm_m_if (SCM xorig, SCM env);
178SCM_API SCM scm_m_set_x (SCM xorig, SCM env);
179SCM_API SCM scm_m_vref (SCM xorig, SCM env);
180SCM_API SCM scm_m_vset (SCM xorig, SCM env);
181SCM_API SCM scm_m_and (SCM xorig, SCM env);
182SCM_API SCM scm_m_or (SCM xorig, SCM env);
183SCM_API SCM scm_m_case (SCM xorig, SCM env);
184SCM_API SCM scm_m_cond (SCM xorig, SCM env);
185SCM_API SCM scm_m_lambda (SCM xorig, SCM env);
186SCM_API SCM scm_m_letstar (SCM xorig, SCM env);
187SCM_API SCM scm_m_do (SCM xorig, SCM env);
188SCM_API SCM scm_m_quasiquote (SCM xorig, SCM env);
189SCM_API SCM scm_m_delay (SCM xorig, SCM env);
5cb22e96 190SCM_API SCM scm_m_generalized_set_x (SCM xorig, SCM env);
28d52ebb 191SCM_API SCM scm_m_future (SCM xorig, SCM env);
33b001fd
MV		 192SCM_API SCM scm_m_define (SCM x, SCM env);
193SCM_API SCM scm_m_letrec (SCM xorig, SCM env);
194SCM_API SCM scm_m_let (SCM xorig, SCM env);
195SCM_API SCM scm_m_apply (SCM xorig, SCM env);
196SCM_API SCM scm_m_cont (SCM xorig, SCM env);
5e5f51c3 197#if SCM_ENABLE_ELISP
33b001fd 198SCM_API SCM scm_m_nil_cond (SCM xorig, SCM env);
33b001fd 199SCM_API SCM scm_m_atfop (SCM xorig, SCM env);
c96d76b8 200#endif /* SCM_ENABLE_ELISP */
33b001fd 201SCM_API SCM scm_m_atbind (SCM xorig, SCM env);
b0c5d67b
DH		 202SCM_API SCM scm_m_atslot_ref (SCM xorig, SCM env);
203SCM_API SCM scm_m_atslot_set_x (SCM xorig, SCM env);
204SCM_API SCM scm_m_atdispatch (SCM xorig, SCM env);
33b001fd
MV		 205SCM_API SCM scm_m_at_call_with_values (SCM xorig, SCM env);
206SCM_API int scm_badargsp (SCM formals, SCM args);
207SCM_API SCM scm_ceval (SCM x, SCM env);
208SCM_API SCM scm_deval (SCM x, SCM env);
209SCM_API SCM scm_call_0 (SCM proc);
210SCM_API SCM scm_call_1 (SCM proc, SCM arg1);
211SCM_API SCM scm_call_2 (SCM proc, SCM arg1, SCM arg2);
212SCM_API SCM scm_call_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3);
213SCM_API SCM scm_call_4 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4);
214SCM_API SCM scm_apply_0 (SCM proc, SCM args);
215SCM_API SCM scm_apply_1 (SCM proc, SCM arg1, SCM args);
216SCM_API SCM scm_apply_2 (SCM proc, SCM arg1, SCM arg2, SCM args);
217SCM_API SCM scm_apply_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM args);
756414cf
MD		 218SCM_API SCM scm_i_call_closure_0 (SCM proc);
219SCM_API scm_t_trampoline_0 scm_trampoline_0 (SCM proc);
504d99c5
MD		 220SCM_API scm_t_trampoline_1 scm_trampoline_1 (SCM proc);
221SCM_API scm_t_trampoline_2 scm_trampoline_2 (SCM proc);
33b001fd
MV		 222SCM_API SCM scm_nconc2last (SCM lst);
223SCM_API SCM scm_apply (SCM proc, SCM arg1, SCM args);
224SCM_API SCM scm_dapply (SCM proc, SCM arg1, SCM args);
225SCM_API SCM scm_m_expand_body (SCM xorig, SCM env);
226SCM_API SCM scm_macroexp (SCM x, SCM env);
227SCM_API SCM scm_map (SCM proc, SCM arg1, SCM args);
228SCM_API SCM scm_for_each (SCM proc, SCM arg1, SCM args);
229SCM_API SCM scm_closure (SCM code, SCM env);
230SCM_API SCM scm_makprom (SCM code);
231SCM_API SCM scm_force (SCM x);
232SCM_API SCM scm_promise_p (SCM x);
233SCM_API SCM scm_cons_source (SCM xorig, SCM x, SCM y);
234SCM_API SCM scm_copy_tree (SCM obj);
235SCM_API SCM scm_i_eval_x (SCM exp, SCM env);
236SCM_API SCM scm_i_eval (SCM exp, SCM env);
237SCM_API SCM scm_primitive_eval (SCM exp);
238SCM_API SCM scm_primitive_eval_x (SCM exp);
239SCM_API SCM scm_eval (SCM exp, SCM module);
240SCM_API SCM scm_eval_x (SCM exp, SCM module);
083629be 241
33b001fd 242SCM_API void scm_init_eval (void);
0f2d19dd 243
22a52da1 244#endif /* SCM_EVAL_H */
89e00824
ML		 245
246/*
247 Local Variables:
248 c-file-style: "gnu"
249 End:
250*/
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