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* * eval.c: scm_m_set and SCM_IM_SET no longer supports multiple
[bpt/guile.git] / libguile / eval.h
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0f2d19dd
JB		 1/* classes: h_files */
2
3#ifndef EVALH
4#define EVALH
5/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
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
19 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 * As a special exception, the Free Software Foundation gives permission
22 * for additional uses of the text contained in its release of GUILE.
23 *
24 * The exception is that, if you link the GUILE library with other files
25 * to produce an executable, this does not by itself cause the
26 * resulting executable to be covered by the GNU General Public License.
27 * Your use of that executable is in no way restricted on account of
28 * linking the GUILE library code into it.
29 *
30 * This exception does not however invalidate any other reasons why
31 * the executable file might be covered by the GNU General Public License.
32 *
33 * This exception applies only to the code released by the
34 * Free Software Foundation under the name GUILE. If you copy
35 * code from other Free Software Foundation releases into a copy of
36 * GUILE, as the General Public License permits, the exception does
37 * not apply to the code that you add in this way. To avoid misleading
38 * anyone as to the status of such modified files, you must delete
39 * this exception notice from them.
40 *
41 * If you write modifications of your own for GUILE, it is your choice
42 * whether to permit this exception to apply to your modifications.
43 * If you do not wish that, delete this exception notice.
44 */
45\f
46
47#include "__scm.h"
48
49\f
50
51/* {Ilocs}
52 *
53 * Ilocs are relative pointers into local environment structures.
54 *
55 */
56#define SCM_ILOCP(n) (SCM_ITAG8(n)==scm_tc8_iloc)
57#define SCM_ILOC00 SCM_MAKE_ITAG8(0L, scm_tc8_iloc)
58#define SCM_IDINC (0x00100000L)
59#define SCM_ICDR (0x00080000L)
60#define SCM_IFRINC (0x00000100L)
61#define SCM_IDSTMSK (-SCM_IDINC)
62#define SCM_IFRAME(n) ((int)((SCM_ICDR-SCM_IFRINC)>>8) & ((int)(n)>>8))
63#define SCM_IDIST(n) (((unsigned long)(n))>>20)
64#define SCM_ICDRP(n) (SCM_ICDR & (n))
65
66\f
67
68
69/* Evaluator */
70#ifdef DEBUG_EXTENSIONS
71#define EVAL(x, env) (SCM_IMP(x) \
72 ? (x) \
73 : (*scm_ceval_ptr) ((x), (env)))
74#else
75#define EVAL(x, env) (SCM_IMP(x)?(x):scm_ceval((x), (env)))
76#endif /* DEBUG_EXTENSIONS */
77
78#define SCM_CEVAL scm_ceval
79#define SCM_APPLY scm_apply
80#define SIDEVAL(x, env) if SCM_NIMP(x) SCM_CEVAL((x), (env))
81
82\f
83
84#define SCM_EXTEND_SCM_ENV scm_acons
85
86\f
87extern SCM scm_i_dot;
88extern SCM scm_i_quote;
89extern SCM scm_i_quasiquote;
90extern SCM scm_i_lambda;
91extern SCM scm_i_let;
92extern SCM scm_i_arrow;
93extern SCM scm_i_else;
94extern SCM scm_i_unquote;
95extern SCM scm_i_uq_splicing;
96extern SCM scm_i_apply;
97extern SCM scm_top_level_lookup_thunk_var;
98extern SCM scm_i_name;
99
100
101/* A resolved global variable reference in the CAR position
102 * of a list is stored (in code only) as a pointer to a pair with a
103 * tag of 1. This is called a "gloc".
104 */
105
106#define SCM_GLOC_SYM(x) (SCM_CAR((x)-1L))
107#define SCM_GLOC_VAL(x) (SCM_CDR((x)-1L))
108
109\f
110#ifdef __STDC__
111extern SCM * scm_ilookup (SCM iloc, SCM env);
112extern SCM * scm_lookupcar (SCM vloc, SCM genv);
113extern SCM scm_unmemocar (SCM form, SCM env);
114extern SCM scm_eval_car (SCM pair, SCM env);
115extern SCM scm_m_quote (SCM xorig, SCM env);
116extern SCM scm_m_begin (SCM xorig, SCM env);
117extern SCM scm_m_if (SCM xorig, SCM env);
118extern SCM scm_m_set (SCM xorig, SCM env);
119extern SCM scm_m_vref (SCM xorig, SCM env);
120extern SCM scm_m_vset (SCM xorig, SCM env);
121extern SCM scm_m_and (SCM xorig, SCM env);
122extern SCM scm_m_or (SCM xorig, SCM env);
123extern SCM scm_m_case (SCM xorig, SCM env);
124extern SCM scm_m_cond (SCM xorig, SCM env);
125extern SCM scm_m_lambda (SCM xorig, SCM env);
126extern SCM scm_m_letstar (SCM xorig, SCM env);
127extern SCM scm_m_do (SCM xorig, SCM env);
128extern SCM scm_m_quasiquote (SCM xorig, SCM env);
129extern SCM scm_m_delay (SCM xorig, SCM env);
130extern SCM scm_m_define (SCM x, SCM env);
131extern SCM scm_m_letrec (SCM xorig, SCM env);
132extern SCM scm_m_let (SCM xorig, SCM env);
133extern SCM scm_m_apply (SCM xorig, SCM env);
134extern SCM scm_m_cont (SCM xorig, SCM env);
135extern int scm_badargsp (SCM formals, SCM args);
136extern SCM scm_ceval (SCM x, SCM env);
137extern SCM scm_deval (SCM x, SCM env);
138extern SCM scm_procedure_documentation (SCM proc);
139extern SCM scm_nconc2last (SCM lst);
140extern SCM scm_apply (SCM proc, SCM arg1, SCM args);
141extern SCM scm_dapply (SCM proc, SCM arg1, SCM args);
142extern SCM SCM_APPLY (SCM proc, SCM arg1, SCM args);
143extern SCM scm_map (SCM proc, SCM arg1, SCM args);
144extern SCM scm_for_each (SCM proc, SCM arg1, SCM args);
145extern SCM scm_closure (SCM code, SCM env);
146extern SCM scm_makprom (SCM code);
147extern SCM scm_makacro (SCM code);
148extern SCM scm_makmacro (SCM code);
149extern SCM scm_makmmacro (SCM code);
150extern SCM scm_force (SCM x);
151extern SCM scm_promise_p (SCM x);
152extern SCM scm_copy_tree (SCM obj);
153extern SCM scm_eval_3 (SCM obj, int copyp, SCM env);
154extern SCM scm_top_level_env (SCM thunk);
155extern SCM scm_eval2 (SCM obj, SCM env_thunk);
156extern SCM scm_eval (SCM obj);
157extern SCM scm_eval_x (SCM obj);
158extern SCM scm_macro_eval_x (SCM exp, SCM env);
159extern SCM scm_definedp (SCM x, SCM env);
160extern SCM scm_make_synt (char *name, SCM (*macroizer) (), SCM (*fcn) ());
161extern void scm_init_eval (void);
162
163#else /* STDC */
164extern SCM * scm_ilookup ();
165extern SCM * scm_lookupcar ();
166extern SCM scm_unmemocar ();
167extern SCM scm_eval_car ();
168extern SCM scm_m_quote ();
169extern SCM scm_m_begin ();
170extern SCM scm_m_if ();
171extern SCM scm_m_set ();
172extern SCM scm_m_vref ();
173extern SCM scm_m_vset ();
174extern SCM scm_m_and ();
175extern SCM scm_m_or ();
176extern SCM scm_m_case ();
177extern SCM scm_m_cond ();
178extern SCM scm_m_lambda ();
179extern SCM scm_m_letstar ();
180extern SCM scm_m_do ();
181extern SCM scm_m_quasiquote ();
182extern SCM scm_m_delay ();
183extern SCM scm_m_define ();
184extern SCM scm_m_letrec ();
185extern SCM scm_m_let ();
186extern SCM scm_m_apply ();
187extern SCM scm_m_cont ();
188extern int scm_badargsp ();
189extern SCM scm_ceval ();
190extern SCM scm_deval ();
191extern SCM scm_procedure_documentation ();
192extern SCM scm_nconc2last ();
193extern SCM scm_apply ();
194extern SCM scm_dapply ();
195extern SCM SCM_APPLY ();
196extern SCM scm_map ();
197extern SCM scm_for_each ();
198extern SCM scm_closure ();
199extern SCM scm_makprom ();
200extern SCM scm_makacro ();
201extern SCM scm_makmacro ();
202extern SCM scm_makmmacro ();
203extern SCM scm_force ();
204extern SCM scm_promise_p ();
205extern SCM scm_copy_tree ();
206extern SCM scm_eval_3 ();
207extern SCM scm_top_level_env ();
208extern SCM scm_eval2 ();
209extern SCM scm_eval ();
210extern SCM scm_eval_x ();
211extern SCM scm_macro_eval_x ();
212extern SCM scm_definedp ();
213extern SCM scm_make_synt ();
214extern void scm_init_eval ();
215
216#endif /* STDC */
217
218#endif /* EVALH */
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