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/* -*- 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 "MLKCons.h"
#import "functions.h"
#import "globals.h"
#import "runtime-compatibility.h"
#import "util.h"
#import <Foundation/NSDictionary.h>
#import <Foundation/NSSet.h>
#ifdef __OBJC_GC__
#import <Foundation/NSZone.h>
#endif
#import <stdlib.h>
@implementation MLKCompiledClosure
-(id) initWithCode:(void *)code
data:(id *)data
length:(intptr_t)dataLength
{
int i;
m_dataLength = dataLength;
m_code = code;
#ifdef __OBJC_GC__
m_data = NSAllocateCollectable (dataLength * sizeof(id), NSScannedOption);
#else
m_data = malloc (dataLength * sizeof(id));
#endif
for (i = 0; i < m_dataLength; i++)
{
m_data[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] + 3);
ffi_cif cif;
ffi_type *arg_types[argc];
ffi_status status;
void *argv[argc];
id argpointers[argc - 2];
ffi_arg return_value;
int i;
id return_values = nil;
id *return_values_ptr = &return_values;
arg_types[0] = &ffi_type_pointer;
argv[0] = &m_data;
arg_types[1] = &ffi_type_pointer;
argv[1] = &return_values_ptr;
for (i = 2; i < argc - 1; i++)
{
arg_types[i] = &ffi_type_pointer;
argpointers[i-2] = denullify([arguments objectAtIndex:(i-2)]);
argv[i] = &argpointers[i-2];
}
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 (m_code), &return_value, (void**)argv);
// return_value = ((id (*)(void *, ...))_code) (_data, argpointers[0], argpointers[1], MLKEndOfArgumentsMarker);
if (return_values)
{
MLKCons *values = [return_values cdr];
return (values ? [values array] : [NSArray array]);
}
else
{
return [NSArray arrayWithObject:nullify((id)return_value)];
}
}
-(NSString *) description
{
return MLKPrintToString (self);
}
-(NSString *) descriptionForLisp
{
return [NSString stringWithFormat:@"<Compiled closure @%p>", self];
}
-(id (*)()) code
{
return m_code;
}
-(void *) closureData
{
return m_data;
}
-(void) dealloc
{
int i;
[super dealloc];
// FIXME: Decrease refcount of _code.
for (i = 0; i < m_dataLength; i++)
{
LRELEASE (m_data[i]);
}
free (m_data);
}
@end
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