1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*===========================================================================
* Filename : module-srfi9.c
* About : SRFI-9 Defining Record Types
*
* Copyright (c) 2007-2008 SigScheme Project <uim-en AT googlegroups.com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of authors nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
===========================================================================*/
#include <config.h>
#include "sigscheme.h"
#include "sigschemeinternal.h"
/*=======================================
File Local Macro Definitions
=======================================*/
#define ERRMSG_MISPLACED_RECORD_DEFINITION \
"record type definition is not allowed here"
#define SYMBOL_VALUE(sym) \
(scm_symbol_value(scm_intern(sym), SCM_INTERACTION_ENV))
/*=======================================
File Local Type Definitions
=======================================*/
static void define_record_field(ScmObj type_obj, ScmObj field_spec,
ScmObj env);
/*=======================================
Variable Definitions
=======================================*/
#include "functable-srfi9.c"
SCM_GLOBAL_VARS_BEGIN(static_srfi9);
#define static
static ScmObj l_proc_car;
static ScmObj l_proc_make_record_type;
static ScmObj l_proc_record_constructor, l_proc_record_predicate;
static ScmObj l_proc_record_accessor, l_proc_record_modifier;
#undef static
SCM_GLOBAL_VARS_END(static_srfi9);
#define l_proc_car SCM_GLOBAL_VAR(static_srfi9, l_proc_car)
#define l_proc_make_record_type SCM_GLOBAL_VAR(static_srfi9, \
l_proc_make_record_type)
#define l_proc_record_constructor SCM_GLOBAL_VAR(static_srfi9, \
l_proc_record_constructor)
#define l_proc_record_predicate SCM_GLOBAL_VAR(static_srfi9, \
l_proc_record_predicate)
#define l_proc_record_accessor SCM_GLOBAL_VAR(static_srfi9, \
l_proc_record_accessor)
#define l_proc_record_modifier SCM_GLOBAL_VAR(static_srfi9, \
l_proc_record_modifier)
SCM_DEFINE_STATIC_VARS(static_srfi9);
/*=======================================
File Local Function Declarations
=======================================*/
/*=======================================
Function Definitions
=======================================*/
SCM_EXPORT void
scm_initialize_srfi9(void)
{
SCM_GLOBAL_VARS_INIT(static_srfi9);
scm_register_funcs(scm_functable_srfi9);
scm_require_module("srfi-23");
scm_load_system_file("srfi-9.scm");
l_proc_car = SYMBOL_VALUE("car");
l_proc_make_record_type = SYMBOL_VALUE("make-record-type");
l_proc_record_constructor = SYMBOL_VALUE("record-constructor");
l_proc_record_predicate = SYMBOL_VALUE("record-predicate");
l_proc_record_accessor = SYMBOL_VALUE("record-accessor");
l_proc_record_modifier = SYMBOL_VALUE("record-modifier");
}
SCM_EXPORT ScmObj
scm_s_srfi9_define_record_type(ScmObj type_name, ScmObj ctor_spec,
ScmObj pred_name, ScmObj field_specs,
ScmEvalState *eval_state)
{
ScmObj env, type_obj, ctor, pred, ctor_name, ctor_tags;
ScmObj field_tags, field_spec, rest;
DECLARE_FUNCTION("define-record-type", syntax_variadic_tailrec_3);
if (!SCM_DEFINABLE_TOPLEVELP(eval_state))
ERR(ERRMSG_MISPLACED_RECORD_DEFINITION);
ENSURE_SYMBOL(type_name);
ENSURE_CONS(ctor_spec);
ENSURE_SYMBOL(pred_name);
env = eval_state->env;
ctor_name = CAR(ctor_spec);
ctor_tags = CDR(ctor_spec);
field_tags = scm_map_single_arg(l_proc_car, field_specs);
type_obj = scm_call(l_proc_make_record_type,
LIST_2(type_name, field_tags));
ctor = scm_call(l_proc_record_constructor, LIST_2(type_obj, ctor_tags));
pred = scm_call(l_proc_record_predicate, LIST_1(type_obj));
scm_s_define_internal(ScmFirstClassObj,
type_name, LIST_2(SYM_QUOTE, type_obj), env);
scm_s_define_internal(ScmFirstClassObj, ctor_name, ctor, env);
scm_s_define_internal(ScmFirstClassObj, pred_name, pred, env);
rest = field_specs;
FOR_EACH (field_spec, rest)
define_record_field(type_obj, field_spec, env);
SCM_ASSERT(NULLP(rest));
return SCM_UNDEF;
}
/* define-record-field is not a part of SRFI-9. */
static void
define_record_field(ScmObj type_obj, ScmObj field_spec, ScmObj env)
{
ScmObj field_tag, accessor_name, modifier_name, accessor, modifier, rest;
DECLARE_INTERNAL_FUNCTION("define-record-type");
rest = field_spec;
field_tag = MUST_POP_ARG(rest);
accessor_name = MUST_POP_ARG(rest);
ENSURE_SYMBOL(field_tag);
ENSURE_SYMBOL(accessor_name);
accessor = scm_call(l_proc_record_accessor, LIST_2(type_obj, field_tag));
scm_s_define_internal(ScmFirstClassObj, accessor_name, accessor, env);
if (!NO_MORE_ARG(rest)) {
modifier_name = POP(rest);
ENSURE_SYMBOL(modifier_name);
modifier = scm_call(l_proc_record_modifier,
LIST_2(type_obj, field_tag));
scm_s_define_internal(ScmFirstClassObj, modifier_name, modifier, env);
}
ENSURE_PROPER_LIST_TERMINATION(rest, field_spec);
}
|
