6 /* Copyright (C) 1995,1996,2000,2001, 2004, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public License
10 * as published by the Free Software Foundation; either version 3 of
11 * the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
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., 51 Franklin Street, Fifth Floor, Boston, MA
26 #include "libguile/__scm.h"
30 #if (SCM_DEBUG_PAIR_ACCESSES == 1)
31 # define SCM_VALIDATE_PAIR(cell, expr) \
32 ((!scm_is_pair (cell) ? scm_error_pair_access (cell), 0 : 0), (expr))
34 # define SCM_VALIDATE_PAIR(cell, expr) (expr)
38 * Use scm_is_null_and_not_nil if it's important (for correctness)
39 * that %nil must NOT be considered null.
41 #define scm_is_null_and_not_nil(x) (scm_is_eq ((x), SCM_EOL))
44 * Use scm_is_null_assume_not_nil if %nil will never be tested,
45 * for increased efficiency.
47 #define scm_is_null_assume_not_nil(x) (scm_is_eq ((x), SCM_EOL))
50 * See the comments preceeding the definitions of SCM_BOOL_F and
51 * SCM_MATCHES_BITS_IN_COMMON in tags.h for more information on
52 * how the following macro works.
54 #define scm_is_null_or_nil(x) \
55 (SCM_MATCHES_BITS_IN_COMMON ((x), SCM_ELISP_NIL, SCM_EOL))
58 /* Older spellings for these nil predicates. */
59 #define SCM_NILP(x) (scm_is_eq ((x), SCM_ELISP_NIL))
60 #define SCM_NULL_OR_NIL_P(x) (scm_is_null_or_nil (x))
64 #define scm_is_null(x) (scm_is_null_or_nil(x))
66 #define SCM_CAR(x) (SCM_VALIDATE_PAIR (x, SCM_CELL_OBJECT_0 (x)))
67 #define SCM_CDR(x) (SCM_VALIDATE_PAIR (x, SCM_CELL_OBJECT_1 (x)))
69 #define SCM_SETCAR(x, v) (SCM_VALIDATE_PAIR (x, SCM_SET_CELL_OBJECT_0 ((x), (v))))
70 #define SCM_SETCDR(x, v) (SCM_VALIDATE_PAIR (x, SCM_SET_CELL_OBJECT_1 ((x), (v))))
72 #define SCM_CAAR(OBJ) SCM_CAR (SCM_CAR (OBJ))
73 #define SCM_CDAR(OBJ) SCM_CDR (SCM_CAR (OBJ))
74 #define SCM_CADR(OBJ) SCM_CAR (SCM_CDR (OBJ))
75 #define SCM_CDDR(OBJ) SCM_CDR (SCM_CDR (OBJ))
77 #define SCM_CAAAR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (OBJ)))
78 #define SCM_CDAAR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (OBJ)))
79 #define SCM_CADAR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (OBJ)))
80 #define SCM_CDDAR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (OBJ)))
81 #define SCM_CAADR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (OBJ)))
82 #define SCM_CDADR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (OBJ)))
83 #define SCM_CADDR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (OBJ)))
84 #define SCM_CDDDR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (OBJ)))
86 #define SCM_CAAAAR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ))))
87 #define SCM_CDAAAR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ))))
88 #define SCM_CADAAR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ))))
89 #define SCM_CDDAAR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ))))
90 #define SCM_CAADAR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ))))
91 #define SCM_CDADAR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ))))
92 #define SCM_CADDAR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ))))
93 #define SCM_CDDDAR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ))))
94 #define SCM_CAAADR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ))))
95 #define SCM_CDAADR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ))))
96 #define SCM_CADADR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ))))
97 #define SCM_CDDADR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ))))
98 #define SCM_CAADDR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ))))
99 #define SCM_CDADDR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ))))
100 #define SCM_CADDDR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ))))
101 #define SCM_CDDDDR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ))))
105 #if (SCM_DEBUG_PAIR_ACCESSES == 1)
106 SCM_API
void scm_error_pair_access (SCM
);
109 SCM_API SCM
scm_cons (SCM x
, SCM y
);
110 SCM_API SCM
scm_cons2 (SCM w
, SCM x
, SCM y
);
111 SCM_API SCM
scm_pair_p (SCM x
);
112 SCM_API SCM
scm_car (SCM x
);
113 SCM_API SCM
scm_cdr (SCM x
);
114 SCM_API SCM
scm_set_car_x (SCM pair
, SCM value
);
115 SCM_API SCM
scm_set_cdr_x (SCM pair
, SCM value
);
117 SCM_API SCM
scm_cddr (SCM x
);
118 SCM_API SCM
scm_cdar (SCM x
);
119 SCM_API SCM
scm_cadr (SCM x
);
120 SCM_API SCM
scm_caar (SCM x
);
121 SCM_API SCM
scm_cdddr (SCM x
);
122 SCM_API SCM
scm_cddar (SCM x
);
123 SCM_API SCM
scm_cdadr (SCM x
);
124 SCM_API SCM
scm_cdaar (SCM x
);
125 SCM_API SCM
scm_caddr (SCM x
);
126 SCM_API SCM
scm_cadar (SCM x
);
127 SCM_API SCM
scm_caadr (SCM x
);
128 SCM_API SCM
scm_caaar (SCM x
);
129 SCM_API SCM
scm_cddddr (SCM x
);
130 SCM_API SCM
scm_cdddar (SCM x
);
131 SCM_API SCM
scm_cddadr (SCM x
);
132 SCM_API SCM
scm_cddaar (SCM x
);
133 SCM_API SCM
scm_cdaddr (SCM x
);
134 SCM_API SCM
scm_cdadar (SCM x
);
135 SCM_API SCM
scm_cdaadr (SCM x
);
136 SCM_API SCM
scm_cdaaar (SCM x
);
137 SCM_API SCM
scm_cadddr (SCM x
);
138 SCM_API SCM
scm_caddar (SCM x
);
139 SCM_API SCM
scm_cadadr (SCM x
);
140 SCM_API SCM
scm_cadaar (SCM x
);
141 SCM_API SCM
scm_caaddr (SCM x
);
142 SCM_API SCM
scm_caadar (SCM x
);
143 SCM_API SCM
scm_caaadr (SCM x
);
144 SCM_API SCM
scm_caaaar (SCM x
);
146 SCM_INTERNAL
void scm_init_pairs (void);
148 #endif /* SCM_PAIRS_H */