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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 "runtime-compatibility.h"
#import "functions.h"
#import <Foundation/NSException.h>
#import <Foundation/NSNull.h>
#import "MLKSymbol.h"
#define DEFINE_GMP_OPERATION(SIGNATURE, TYPE, GMPOP, RETTYPE, OBJTYPE, CONSTRUCTOR) \
-(RETTYPE *) SIGNATURE \
{ \
TYPE##_t mpval; \
RETTYPE *result; \
\
TYPE##_init (mpval); \
GMPOP; \
result = [OBJTYPE CONSTRUCTOR mpval]; \
TYPE##_clear (mpval); \
\
return result; \
}
// Read this as “Lisp ASSIGN” etc..
#define LASSIGN(VAR, VALUE) \
({ LRELEASE (VAR); VAR = VALUE; LRETAIN (VAR); })
#define LASSIGN_COPY(VAR, VALUE) \
({ \
id ___object = VALUE; \
LRELEASE (VAR); \
if (MLKInstanceP (___object)) \
{ \
VAR = [___object copy]; \
RETAIN (VAR); \
} \
else \
VAR = ___object; \
})
#define LAUTORELEASE(VALUE) \
({ id __object = VALUE; \
MLKInstanceP (__object) ? (id)AUTORELEASE(__object) : (id)__object; })
#define LDESTROY(VAR) \
({ LRELEASE (VAR); VAR = nil; })
#define LRELEASE(VALUE) \
({ id __object = VALUE; \
if (MLKInstanceP (__object)) RELEASE(__object); })
#define LRETAIN(VALUE) \
({ id __object = VALUE; \
MLKInstanceP (__object) ? (id)RETAIN(__object) : (id)__object; })
static id nullify (id value) __attribute__ ((pure, unused));
static id denullify (id value) __attribute__ ((pure, unused));
static id stringify (id value) __attribute__ ((pure, unused));
static id nullify (id value)
{
if (MLKFixnumP (value))
return [MLKInteger integerWithFixnum:value];
else if (value)
return value;
else
return [NSNull null];
}
static id denullify (id value)
{
if (value == [NSNull null])
return nil;
else if ([value isKindOfClass:[MLKInteger class]])
return MLKCanoniseInteger (value);
else
return value;
}
static id stringify (id thing)
{
// FIXME: Some cases may be missing.
if (!thing)
return @"NIL";
if ([thing isKindOfClass:[NSString class]])
return thing;
else if ([thing isKindOfClass:[MLKSymbol class]])
return [thing name];
[NSException raise:@"MLKTypeError" format:@"Can't coerce %@ to a string.",
MLKPrintToString(thing)];
return nil;
}
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