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
|
/*
Copyright (C) 1994 M. Hagiya, W. Schelter, T. Yuasa
Copyright (C) 2024 Camm Maguire
This file is part of GNU Common Lisp, herein referred to as GCL
GCL is free software; you can redistribute it and/or modify it under
the terms of the GNU LIBRARY GENERAL PUBLIC LICENSE as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCL is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with GCL; see the file COPYING. If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
multival.c
Multiple Values
*/
#include "include.h"
LFD(Lvalues)(void)
{
if (vs_base == vs_top) vs_base[0] = Cnil;
if (vs_top-vs_base > MULTIPLE_VALUES_LIMIT)
FEerror("Too many function call values", 0);
}
LFD(Lvalues_list)(void)
{
object x;
check_arg(1);
x = vs_base[0];
vs_top = vs_base;
while (!endp(x)) {
vs_push(MMcar(x));
x = MMcdr(x);
}
if (vs_top == vs_base) vs_base[0] = Cnil;
if (vs_top-vs_base > MULTIPLE_VALUES_LIMIT)
FEerror("Too many function call values", 0);
}
static void
FFN(Fmultiple_value_list)(object form)
{
object *top = vs_top;
if (endp(form))
FEtoo_few_argumentsF(form);
if (!endp(MMcdr(form)))
FEtoo_many_argumentsF(form);
vs_push(Cnil);
eval(MMcar(form));
while (vs_base < vs_top) {
top[0] = MMcons(vs_top[-1],top[0]);
vs_top--;
}
vs_base = top;
vs_top = top+1;
}
static void
FFN(Fmultiple_value_call)(object form)
{
object *top = vs_top;
object *top1;
object *top2;
if (endp(form))
FEtoo_few_argumentsF(form);
eval(MMcar(form));
vs_top = top;
vs_push(vs_base[0]);
form = MMcdr(form);
while (!endp(form)) {
top1 = vs_top;
eval(MMcar(form));
top2 = vs_top;
vs_top = top1;
while (vs_base < top2) {
vs_push(vs_base[0]);
vs_base++;
}
form = MMcdr(form);
}
vs_base = top+1;
super_funcall(top[0]);
}
static void
FFN(Fmultiple_value_prog1)(object forms)
{
object *top;
object *base = vs_top;
if (endp(forms))
FEtoo_few_argumentsF(forms);
eval(MMcar(forms));
top = vs_top;
vs_top=base;
while (vs_base < top) {
vs_push(vs_base[0]);
vs_base++;
}
top = vs_top;
forms = MMcdr(forms);
while (!endp(forms)) {
eval(MMcar(forms));
vs_top = top;
forms = MMcdr(forms);
}
vs_base = base;
vs_top = top;
if (vs_base == vs_top) vs_base[0] = Cnil;
}
void
gcl_init_multival(void)
{
make_constant("MULTIPLE-VALUES-LIMIT",make_fixnum(1+MULTIPLE_VALUES_LIMIT));
make_function("VALUES",Lvalues);
make_function("VALUES-LIST",Lvalues_list);
make_special_form("MULTIPLE-VALUE-CALL",Fmultiple_value_call);
make_special_form("MULTIPLE-VALUE-PROG1",
Fmultiple_value_prog1);
make_special_form("MULTIPLE-VALUE-LIST",Fmultiple_value_list);
}
|
