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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/* -*- mode: objc; coding: utf-8 -*- */
/* Toilet Lisp, 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 "MLKListenerController.h"
#import "MLKDynamicContext.h"
#import "MLKLexicalContext.h"
#import "MLKLexicalEnvironment.h"
#import "MLKInterpreter.h"
#import "MLKPackage.h"
#import "MLKReader.h"
#import "util.h"
#import "special-symbols.h"
@implementation MLKListenerController
+ (void)initialize
{
ensure_symbols();
}
- (void) initialiseInterpreter
{
[inputField setStringValue:@"(load \"init.lisp\")"];
[self submit:self];
}
- (IBAction)submit:(id)sender
{
MLKPackage *package;
id object;
NSDictionary *attrs;
NSString *input = [inputField stringValue];
float originalScrollPosition = [[[outputTextView enclosingScrollView]
verticalScroller]
floatValue];
[submitButton setEnabled:NO];
NS_DURING
{
object = [MLKReader readFromString:input];
}
NS_HANDLER
{
// A parsing error. Beep and let the user try again.
// XXX Maybe the status line could be made to provide more information on the error.
NSBeep();
[submitButton setEnabled:YES];
[inputField selectText:self];
return;
}
NS_ENDHANDLER;
[inputField setStringValue:@""];
[inputField selectText:self];
package = [[MLKDynamicContext currentContext]
valueForSymbol:[[MLKPackage findPackage:@"COMMON-LISP"]
intern:@"*PACKAGE*"]];
NSMutableAttributedString *text = [outputTextView textStorage];
[text beginEditing];
attrs = [NSDictionary dictionaryWithObjectsAndKeys:
[NSColor blueColor], NSForegroundColorAttributeName, nil];
NSString *barePrompt = [NSString stringWithFormat:@"%@> ", [package name]];
NSAttributedString *prompt =
LAUTORELEASE ([[NSAttributedString alloc] initWithString:barePrompt
attributes:attrs]);
[text appendAttributedString:prompt];
attrs = [NSDictionary dictionaryWithObjectsAndKeys:
[NSColor blackColor], NSForegroundColorAttributeName, nil];
NSAttributedString *inputFeedback =
LAUTORELEASE ([[NSAttributedString alloc] initWithString:input attributes:attrs]);
[text appendAttributedString:inputFeedback];
[[text mutableString] appendString:@"\n"];
[text endEditing];
[statusText setStringValue:@"Compiling and executing."];
if (originalScrollPosition == 1.0)
{
NSRange range = NSMakeRange ([text length], 0);
[outputTextView scrollRangeToVisible:range];
}
[NSThread detachNewThreadSelector:@selector(evalObject:)
toTarget:self
withObject:nullify(object)];
}
- (void)evalObject:(id)object
{
MLKDynamicContext *newctx;
NSDictionary *attrs;
NSMutableAttributedString *text = [outputTextView textStorage];
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
BOOL waitp = NO;
float originalScrollPosition = [[[outputTextView enclosingScrollView]
verticalScroller]
floatValue];
object = denullify(object);
NS_DURING
{
int i;
NSArray *results;
NSDictionary *vars = [NSDictionary dictionaryWithObjectsAndKeys:
self, QUERY_IO,
self, ERROR_OUTPUT,
self, STANDARD_OUTPUT,
self, TERMINAL_IO,
self, TRACE_OUTPUT,
self, DEBUG_IO,
nil];
MLKDynamicContext *ctx = [MLKDynamicContext currentContext];
newctx = [[MLKDynamicContext alloc] initWithParent:ctx
variables:vars
handlers:nil
restarts:nil
catchTags:nil
activeHandlerEnvironment:nil];
[newctx pushContext];
results = [MLKInterpreter eval:object
inLexicalContext:[MLKLexicalContext globalContext]
withEnvironment:[MLKLexicalEnvironment globalEnvironment]];
[text performSelectorOnMainThread:@selector(beginEditing)
withObject:nil
waitUntilDone:waitp];
for (i = 0; i < [results count]; i++)
{
id result = denullify ([results objectAtIndex:i]);
//[text beginEditing];
attrs = [NSDictionary dictionaryWithObjectsAndKeys:
[NSColor purpleColor], NSForegroundColorAttributeName, nil];
NSAttributedString *response =
LAUTORELEASE ([[NSAttributedString alloc] initWithString:MLKPrintToString(result)
attributes:attrs]);
[text performSelectorOnMainThread:@selector(appendAttributedString:)
withObject:response
waitUntilDone:waitp];
[[text mutableString]
performSelectorOnMainThread:@selector(appendString:)
withObject:@"\n"
waitUntilDone:waitp];
}
}
NS_HANDLER
{
NSString *bare_msg = [NSString stringWithFormat:
@"Caught an unhandled exception.\nName: %s\nReason: %s\n",
[[localException name] UTF8String],
[[localException reason] UTF8String]];
[text performSelectorOnMainThread:@selector(beginEditing)
withObject:nil
waitUntilDone:waitp];
attrs = [NSDictionary dictionaryWithObjectsAndKeys:
[NSColor redColor], NSForegroundColorAttributeName, nil];
NSAttributedString *response =
LAUTORELEASE ([[NSAttributedString alloc] initWithString:bare_msg
attributes:attrs]);
[text performSelectorOnMainThread:@selector(appendAttributedString:)
withObject:response
waitUntilDone:waitp];
}
NS_ENDHANDLER;
[MLKDynamicContext popContext];
LDESTROY (newctx);
[statusText performSelectorOnMainThread:@selector(setStringValue:)
withObject:@"Ready."
waitUntilDone:waitp];
[[text mutableString]
performSelectorOnMainThread:@selector(appendString:)
withObject:@"\n"
waitUntilDone:waitp];
[text performSelectorOnMainThread:@selector(endEditing)
withObject:nil
waitUntilDone:waitp];
[self performSelectorOnMainThread:@selector(enableSubmitButton:)
withObject:self
waitUntilDone:NO];
if (originalScrollPosition == 1.0)
{
[self performSelectorOnMainThread:@selector(scrollDown:)
withObject:self
waitUntilDone:NO];
}
[pool release];
}
- (void)enableSubmitButton:(id)sender
{
[submitButton setEnabled:YES];
}
- (void)writeChar:(unichar)ch
{
[self writeString:[NSString stringWithFormat:@"%C", ch]];
}
- (void)writeString:(NSString *)string
{
float originalScrollPosition = [[[outputTextView enclosingScrollView]
verticalScroller]
floatValue];
NSDictionary *attrs = [NSDictionary dictionaryWithObjectsAndKeys:
[NSColor brownColor],
NSForegroundColorAttributeName,
nil];
NSAttributedString *output =
LAUTORELEASE ([[NSAttributedString alloc] initWithString:string
attributes:attrs]);
[[outputTextView textStorage]
performSelectorOnMainThread:@selector(appendAttributedString:)
withObject:output
waitUntilDone:YES];
if (originalScrollPosition == 1.0)
{
[self performSelectorOnMainThread:@selector(scrollDown:)
withObject:self
waitUntilDone:NO];
}
}
- (void)scrollDown:(id)sender
{
// FIXME: This is slow. Investigate NSClipView#-scrollToPoint as a
// possible alternative.
NSRange range = NSMakeRange ([[outputTextView textStorage] length], 0);
[outputTextView scrollRangeToVisible:range];
}
@end
|
