quakeforge/ruamoko/scheme/Lambda.r
2005-05-08 10:37:57 +00:00

45 lines
1,007 B
R

#include "Lambda.h"
#include "Nil.h"
#include "Symbol.h"
#include "string.h"
#include "Cons.h"
#include "defs.h"
#include "Error.h"
#include "Machine.h"
@implementation Lambda
+ (id) newWithCode: (CompiledCode) c environment: (Frame) e
{
return [[self alloc] initWithCode: c environment: e];
}
- (id) initWithCode: (CompiledCode) c environment: (Frame) e
{
self = [super init];
code = c;
env = e;
return self;
}
- (void) invokeOnMachine: (Machine) m
{
[super invokeOnMachine: m];
if (length([m stack]) < [code minimumArguments]) {
[m value: [Error type: "call"
message: sprintf("expected at least %i arguments, received %i",
[code minimumArguments], length([m stack]))
by: m]];
return;
}
[m loadCode: code];
[m environment: env];
[m procedure: self];
}
- (void) markReachable
{
[env mark];
[code mark];
}
@end