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
|
/* -*- mode: objc; coding: utf-8 -*- */
/* Étoilisp/Mulklisp, a Common Lisp subset for the Étoilé runtime.
* Copyright (C) 2008 Matthias Andreas Benkard.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#import "MLKDynamicContext.h"
#import "MLKInterpreter.h"
#import "MLKLexicalEnvironment.h"
#import "MLKPackage.h"
#import "MLKReadEvalPrintLoop.h"
#import "MLKReader.h"
#import "NSObject-MLKPrinting.h"
#import "runtime-compatibility.h"
#import <Foundation/NSAutoreleasePool.h>
#import <Foundation/NSException.h>
#import <Foundation/NSNull.h>
#import <Foundation/NSString.h>
#import <editline/history.h>
#import <editline/readline.h>
#import <histedit.h>
static int _argc;
static char **_argv;
static const char *prompt (EditLine *e) {
NS_DURING
{
MLKPackage *package = [[MLKDynamicContext currentContext]
valueForSymbol:[[MLKPackage
findPackage:@"COMMON-LISP"]
intern:@"*PACKAGE*"]];
return [[NSString stringWithFormat:@"%@> ", [package name]] UTF8String];
}
NS_HANDLER
{
printf ("Caught an unhandled exception.\nName: %s\nReason: %s\n",
[[localException name] UTF8String],
[[localException reason] UTF8String]);
return "> ";
}
NS_ENDHANDLER
}
@implementation MLKReadEvalPrintLoop : NSObject
+(void) run
{
EditLine *editline;
History *commands;
HistEvent event;
editline = el_init (_argv[0], stdin, stdout, stderr);
el_set (editline, EL_PROMPT, &prompt);
el_set (editline, EL_EDITOR, "emacs");
commands = history_init();
history (commands, &event, H_SETSIZE, 1000);
el_set (editline, EL_HIST, history, commands);
printf ("This is Toilet Lisp, version 0.0.1.\n");
printf ("Please make yourself at home.\n");
while (1)
{
const char *line;
ssize_t line_length;
line = el_gets (editline, &line_length);
if (line_length > 1)
{
NSAutoreleasePool *pool;
NSArray *results;
id code;
pool = [[NSAutoreleasePool alloc] init];
history (commands, &event, H_ENTER, line);
NS_DURING
{
int i;
code = [MLKReader readFromString:[NSString stringWithUTF8String:line]];
results = [MLKInterpreter eval:code
inLexicalContext:[MLKLexicalContext
globalContext]
withEnvironment:[MLKLexicalEnvironment
globalEnvironment]];
for (i = 0; i < [results count]; i++)
{
id result = [results objectAtIndex:i];
if (result != [NSNull null])
printf ("%s\n", [[result descriptionForLisp] UTF8String]);
else
printf ("()\n");
}
}
NS_HANDLER
{
printf ("Caught an unhandled exception.\nName: %s\nReason: %s\n",
[[localException name] UTF8String],
[[localException reason] UTF8String]);
}
NS_ENDHANDLER
RELEASE (pool);
}
//free (line);
}
history_end (commands);
el_end (editline);
}
@end
int main (int argc, char **argv)
{
_argc = argc;
_argv = argv;
NSAutoreleasePool *pool;
pool = [[NSAutoreleasePool alloc] init];
[MLKReadEvalPrintLoop run];
RELEASE (pool);
return 0;
}
|
