PatchInstance *Patch::instantiate(){
// create the instance
PatchInstance *pi = new PatchInstance(this);
// iterate over the components
IteratorPtr<uint32_t> iterator(components.createKeyIterator());
for(iterator->first();!iterator->isDone();iterator->next()){
uint32_t key = iterator->current();
if(components.find(key)){
Component *c = components.getval();
// for each one, get the instance data
ComponentInstance *ci = pi->getInstance(c);
// and initialise
ci->init(c,pi);
} else {
throw IteratorException("instantiation loop");
}
}
// add to the list
instances.addToTail(pi);
// return the instance
return pi;
}
void Patch::unlinkComponentOutput(Component *c,int output){
IteratorPtr<uint32_t> iterator(components.createKeyIterator());
for(iterator->first();!iterator->isDone();iterator->next()){
uint32_t key = iterator->current();
if(components.find(key)){
Component *p = components.getval();
for(int i=0;i<ComponentType::NUMINPUTS;i++){
const Component::Input *inp = p->getInput(i);
if(inp->c == c && inp->output == output)
p->unlinkInput(i);
}
} else
throw IteratorException("deleteComponent loop");
}
}
void Patch::deleteComponent(uint32_t id){
if(!components.find(id))throw SE_NOSUCHCOMP;
Component *c = components.getval();
// clear instance data
if(!c->type)
throw Exception("deleting uninitialised component");
for(PatchInstance *pi = instances.head();pi;pi=instances.next(pi)){
if(c->slot<0)
throw Exception("deleting uninitialised component instance");
ComponentInstance *ci = pi->getInstance(c->slot);
ci->shutdown();
}
// make sure connectors don't try to read this data
for(int i=0;i<NUMCONNECTORS;i++){
if(connectors[i].c==c)
connectors[i].c=NULL;
}
// and deallocate the component slot
deallocateComponentSlot(c->slot);
// detach inputs leading from this component in any other component
IteratorPtr<uint32_t> iterator(components.createKeyIterator());
for(iterator->first();!iterator->isDone();iterator->next()){
uint32_t key = iterator->current();
if(components.find(key)){
components.getval()->unlinkInputsFrom(c);
} else
throw IteratorException("deleteComponent loop");
}
components.del(id);
}
T* operator -> () {
if (valid())
return &_vector[_pos];
throw IteratorException("invalid access");
}
