summaryrefslogtreecommitdiff
path: root/MLKCompiledClosure.m
blob: 73f308b75f738a1d0b0fbdaa59c64a5c7a493e66 (plain)
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
/* -*- 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 "MLKCompiledClosure.h"

#import "functions.h"
#import "globals.h"
#import "runtime-compatibility.h"
#import "util.h"

#import <Foundation/NSDictionary.h>
#import <Foundation/NSSet.h>

#import <stdlib.h>


@implementation MLKCompiledClosure
-(id) initWithCode:(void *)code
              data:(id *)data
            length:(intptr_t)dataLength
{
  int i;

  _data = data;
  _dataLength = dataLength;
  _code = code;

  for (i = 0; i < _dataLength; i++)
    {
      LRETAIN (_data[i]);
    }

  return self;
}

+(id) closureWithCode:(void *)code
                 data:(id *)data
               length:(intptr_t)dataLength
{
  return LAUTORELEASE ([[self alloc] initWithCode:code data:data length:dataLength]);
}

-(NSArray *) applyToArray:(NSArray *)arguments
{
  int argc = ([arguments count] + 2);
  ffi_cif cif;
  ffi_type *arg_types[argc];
  ffi_status status;
  void *argv[argc];
  id argpointers[argc - 1];
  id return_value;
  int i;

  arg_types[0] = &ffi_type_pointer;
  argv[0] = &_data;

  for (i = 1; i < argc - 1; i++)
    {
      arg_types[i] = &ffi_type_pointer;
      argpointers[i-1] = denullify([arguments objectAtIndex:(i-1)]);
      argv[i] = &argpointers[i-1];
    }

  arg_types[argc - 1] = &ffi_type_pointer;
  argv[argc - 1] = &MLKEndOfArgumentsMarker;

  status = ffi_prep_cif (&cif, FFI_DEFAULT_ABI, argc, &ffi_type_pointer, arg_types);
  if (status != FFI_OK)
    {
      [NSException raise:@"MLKInvalidFFITypeException"
                   format:@"FFI type is invalid (this is probably a bug)."];
    }

//   NSLog (@"Calling %p (argc = %d)", _code, argc);
//   for (i = 0; i < argc; i++)
//     {
//       NSLog (@"Argument %d: %p", i, *((void**)argv[i]));
//     }

  ffi_call (&cif, FFI_FN (_code), &return_value, (void**)argv);

  // FIXME: multiple values
  return [NSArray arrayWithObject:nullify(return_value)];
}

-(NSString *) description
{
  return MLKPrintToString (self);
}

-(NSString *) descriptionForLisp
{
  return [NSString stringWithFormat:@"<Compiled closure @%p>", self];
}

-(id (*)()) code
{
  return _code;
}

-(void *) closureData
{
  return _data;
}

-(void) dealloc
{
  int i;

  [super dealloc];

  // FIXME: Decrease refcount of _code.
  for (i = 0; i < _dataLength; i++)
    {
      LRELEASE (_data[i]);
    }
  free (_data);
}
@end