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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef PAIRSH | |
4 | #define PAIRSH | |
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 | ||
b4309c3c | 47 | #include "libguile/__scm.h" |
0f2d19dd JB |
48 | |
49 | \f | |
50 | ||
51 | typedef struct scm_cell | |
52 | { | |
53 | SCM car; | |
54 | SCM cdr; | |
55 | } scm_cell; | |
56 | ||
57 | /* SCM_PTR_LT defines how to compare two SCM_CELLPTRs (which may not be in the | |
58 | * same scm_array). SCM_CELLPTR is a pointer to a cons cell which may be | |
59 | * compared or differenced. SCMPTR is used for stack bounds. | |
60 | */ | |
61 | ||
62 | #if !defined(__TURBOC__) || defined(__TOS__) | |
63 | ||
64 | typedef scm_cell *SCM_CELLPTR; | |
65 | typedef SCM *SCMPTR; | |
66 | ||
67 | # ifdef nosve | |
68 | # define SCM_PTR_MASK 0xffffffffffff | |
69 | # define SCM_PTR_LT(x, y) (((int)(x)&SCM_PTR_MASK) < ((int)(y)&SCM_PTR_MASK)) | |
70 | # else | |
71 | # define SCM_PTR_LT(x, y) ((x) < (y)) | |
72 | # endif /* def nosve */ | |
73 | ||
74 | #else /* defined(__TURBOC__) && !defined(__TOS__) */ | |
75 | ||
76 | # ifdef PROT386 | |
77 | typedef scm_cell *SCM_CELLPTR; | |
78 | typedef SCM *SCMPTR; | |
79 | # define SCM_PTR_LT(x, y) (((long)(x)) < ((long)(y))) | |
80 | # else | |
81 | typedef scm_cell huge *SCM_CELLPTR; | |
82 | typedef SCM huge *SCMPTR; | |
83 | # define SCM_PTR_LT(x, y) ((x) < (y)) | |
84 | # endif /* def PROT386 */ | |
85 | ||
86 | #endif /* defined(__TURBOC__) && !defined(__TOS__) */ | |
87 | ||
88 | #define SCM_PTR_GT(x, y) SCM_PTR_LT(y, x) | |
89 | #define SCM_PTR_LE(x, y) (!SCM_PTR_GT(x, y)) | |
90 | #define SCM_PTR_GE(x, y) (!SCM_PTR_LT(x, y)) | |
91 | ||
0f2d19dd JB |
92 | #define SCM_NULLP(x) (SCM_EOL == (x)) |
93 | #define SCM_NNULLP(x) (SCM_EOL != (x)) | |
94 | ||
95 | ||
96 | \f | |
97 | ||
98 | /* Cons Pairs | |
99 | */ | |
100 | ||
101 | #define SCM_CAR(x) (((scm_cell *)(SCM2PTR(x)))->car) | |
102 | #define SCM_CDR(x) (((scm_cell *)(SCM2PTR(x)))->cdr) | |
103 | #define SCM_GCCDR(x) (~1L & SCM_CDR(x)) | |
24e68a57 MD |
104 | #define SCM_SETCAR(x, v) (SCM_CAR(x) = (SCM)(v)) |
105 | #define SCM_SETCDR(x, v) (SCM_CDR(x) = (SCM)(v)) | |
106 | ||
107 | #define SCM_CARLOC(x) (&SCM_CAR (x)) | |
108 | #define SCM_CDRLOC(x) (&SCM_CDR (x)) | |
109 | ||
110 | #define SCM_SETAND_CAR(x, y) (SCM_CAR (x) &= (y)) | |
111 | #define SCM_SETAND_CDR(x, y) (SCM_CDR (x) &= (y)) | |
112 | #define SCM_SETOR_CAR(x, y) (SCM_CAR (x) |= (y)) | |
113 | #define SCM_SETOR_CDR(x, y) (SCM_CDR (x) |= (y)) | |
0f2d19dd JB |
114 | |
115 | #define SCM_CAAR(OBJ) SCM_CAR (SCM_CAR (OBJ)) | |
116 | #define SCM_CDAR(OBJ) SCM_CDR (SCM_CAR (OBJ)) | |
117 | #define SCM_CADR(OBJ) SCM_CAR (SCM_CDR (OBJ)) | |
118 | #define SCM_CDDR(OBJ) SCM_CDR (SCM_CDR (OBJ)) | |
119 | ||
120 | #define SCM_CAAAR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (OBJ))) | |
121 | #define SCM_CDAAR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (OBJ))) | |
122 | #define SCM_CADAR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (OBJ))) | |
123 | #define SCM_CDDAR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (OBJ))) | |
124 | #define SCM_CAADR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (OBJ))) | |
125 | #define SCM_CDADR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (OBJ))) | |
126 | #define SCM_CADDR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (OBJ))) | |
127 | #define SCM_CDDDR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (OBJ))) | |
128 | ||
129 | #define SCM_CAAAAR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ)))) | |
130 | #define SCM_CDAAAR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ)))) | |
131 | #define SCM_CADAAR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ)))) | |
132 | #define SCM_CDDAAR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ)))) | |
133 | #define SCM_CAADAR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ)))) | |
134 | #define SCM_CDADAR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ)))) | |
135 | #define SCM_CADDAR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ)))) | |
136 | #define SCM_CDDDAR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ)))) | |
137 | #define SCM_CAAADR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ)))) | |
138 | #define SCM_CDAADR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ)))) | |
139 | #define SCM_CADADR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ)))) | |
140 | #define SCM_CDDADR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ)))) | |
141 | #define SCM_CAADDR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ)))) | |
142 | #define SCM_CDADDR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ)))) | |
143 | #define SCM_CADDDR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ)))) | |
144 | #define SCM_CDDDDR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ)))) | |
145 | ||
146 | ||
88256b2e JB |
147 | #ifdef DEBUG_FREELIST |
148 | #define SCM_NEWCELL(_into) (scm_debug_newcell (&_into)) | |
149 | #else | |
0f2d19dd JB |
150 | #define SCM_NEWCELL(_into) \ |
151 | { \ | |
152 | if (SCM_IMP(scm_freelist)) \ | |
153 | _into = scm_gc_for_newcell();\ | |
154 | else \ | |
155 | { \ | |
156 | _into = scm_freelist; \ | |
157 | scm_freelist = SCM_CDR(scm_freelist);\ | |
158 | ++scm_cells_allocated; \ | |
159 | } \ | |
160 | } | |
88256b2e | 161 | #endif |
0f2d19dd JB |
162 | |
163 | \f | |
1cc91f1b JB |
164 | |
165 | extern SCM scm_cons SCM_P ((SCM x, SCM y)); | |
166 | extern SCM scm_cons2 SCM_P ((SCM w, SCM x, SCM y)); | |
167 | extern SCM scm_pair_p SCM_P ((SCM x)); | |
168 | extern SCM scm_set_car_x SCM_P ((SCM pair, SCM value)); | |
169 | extern SCM scm_set_cdr_x SCM_P ((SCM pair, SCM value)); | |
170 | extern void scm_init_pairs SCM_P ((void)); | |
171 | ||
0f2d19dd | 172 | #endif /* PAIRSH */ |