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/* 2003 Aug 5 */
#import "STScriptObject.h"
#import "NSInvocation+additions.h"
#import "STEnvironment.h"
#import "STEngine.h"
#import "STExterns.h"
#import "STObjCRuntime.h"
#import <Foundation/NSArray.h>
#import <Foundation/NSCoder.h>
#import <Foundation/NSDictionary.h>
#import <Foundation/NSException.h>
#import <Foundation/NSInvocation.h>
#import <Foundation/NSString.h>
@implementation STScriptObject
/** Return new instance of script object without any instance variables */
+ scriptObject
{
return AUTORELEASE([[self alloc] init]);
}
- init
{
if ((self = [super init]) != nil)
{
methodDictionary = [[NSMutableDictionary alloc] init];
}
return self;
}
- initWithInstanceVariableNames:(NSString *)names
{
return [self init];
}
- (void)dealloc
{
RELEASE(methodDictionary);
RELEASE(ivars);
[super dealloc];
}
- (void)setObject:(id)anObject forVariable:(NSString *)aName
{
[self notImplemented:_cmd];
}
- (id)objectForVariable:(NSString *)aName
{
[self notImplemented:_cmd];
return nil;
}
- (NSArray *)instanceVariableNames
{
return [ivars allKeys];
}
- (void)addMethod:(id <STMethod>)aMethod
{
[methodDictionary setObject:aMethod forKey:[aMethod methodName]];
}
- (id <STMethod>)methodWithName:(NSString *)aName
{
return [methodDictionary objectForKey:aName];
}
- (void)removeMethod:(id <STMethod>)aMethod
{
[self notImplemented:_cmd];
}
- (void)removeMethodWithName:(NSString *)aName
{
[methodDictionary removeObjectForKey:aName];
}
- (NSArray *)methodNames
{
return [methodDictionary allKeys];
}
- (NSDictionary *)methodDictionary
{
return [NSDictionary dictionaryWithDictionary:methodDictionary];
}
/** Set object's environment. Note: This method should be replaced by
some other, more clever mechanism. */
- (void)setEnvironment:(STEnvironment *)env
{
ASSIGN(environment, env);
}
- (STEnvironment *)environment
{
return environment;
}
- (BOOL)respondsToSelector:(SEL)aSelector
{
if( [super respondsToSelector:(SEL)aSelector] )
{
return YES;
}
return ([methodDictionary objectForKey:NSStringFromSelector(aSelector)] != nil);
}
- (NSMethodSignature *)methodSignatureForSelector:(SEL)sel
{
NSMethodSignature *signature = nil;
signature = [super methodSignatureForSelector:sel];
if(!signature)
{
signature = STConstructMethodSignatureForSelector(sel);
}
return signature;
}
- (void) forwardInvocation:(NSInvocation *)invocation
{
STEngine *engine;
id <STMethod> method;
NSString *methodName = NSStringFromSelector([invocation selector]);
NSMutableArray *args;
id arg;
NSUInteger index;
NSUInteger count;
id retval = nil;
method = [methodDictionary objectForKey:methodName];
if(!method)
{
[NSException raise:@"STScriptObjectException"
format:@"No script object method with name '%@'",
methodName];
return;
}
engine = [STEngine engineForLanguage:[method languageName]];
/* Get arguments as array */
count = [[invocation methodSignature] numberOfArguments];
args = [NSMutableArray array];
for(index = 2; index < count; index++)
{
arg = [invocation getArgumentAsObjectAtIndex:index];
if (arg == nil)
{
[args addObject:STNil];
}
else
{
[args addObject:arg];
}
}
retval = [engine executeMethod:method
forReceiver:self
withArguments:args
inContext:environment];
[invocation setReturnValue:&retval];
}
- (void)encodeWithCoder:(NSCoder *)coder
{
// [super encodeWithCoder: coder];
[coder encodeObject:methodDictionary];
[coder encodeObject:ivars];
}
- initWithCoder:(NSCoder *)decoder
{
if ((self = [super init] /*[super initWithCoder: decoder]*/) != nil)
{
[decoder decodeValueOfObjCType: @encode(id) at: &methodDictionary];
[decoder decodeValueOfObjCType: @encode(id) at: &ivars];
}
return self;
}
@end
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