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«REM»
/*******************************************************************************
* Copyright (c) 2010 protos software gmbh (http://www.protos.de).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* CONTRIBUTORS:
* Thomas Schuetz and Henrik Rentz-Reichert (initial contribution)
*
*******************************************************************************/
«ENDREM»
«IMPORT room»;
«IMPORT etricegen»;
«EXTENSION org::eclipse::etrice::generator::extensions::Extensions»
«EXTENSION extensions::Extensions»
«EXTENSION org::eclipse::xtend::util::stdlib::io»
«DEFINE stateMachine FOR ExpandedActorClass»
«LET this.actorClass AS ac»
//******************************************
// START of generated code for FSM
//******************************************
// State IDs for FSM
«LET ac.getNumberOfInheritedBaseStates() AS offset»
«FOREACH ac.stateMachine.getBaseStateList() AS state ITERATOR iter»protected static final int «state.getStateId()» = «iter.counter1+1+offset»;
«ENDFOREACH»«ENDLET»
protected static final String stateStrings[] = {"<no state>","<top>",«FOREACH ac.getAllBaseStates() AS state ITERATOR iter SEPARATOR ","»"«state.getStatePathName()»"
«ENDFOREACH»};
// history
// TODOHRR: history defined in ActorClassBase, init in constructor
// history = new int[5];
// for (int i = 0; i < history.length; i++) {
// history[i] = NO_STATE;
// }
protected int history[] = {NO_STATE,NO_STATE«FOREACH ac.getAllBaseStates() AS state»,NO_STATE«ENDFOREACH»};
«LET this.getOwnTransitionChains() AS chains»
«LET this.getTransitionChains().size-chains.size AS offset»
// transition chains
«FOREACH chains AS tc ITERATOR i»protected static final int «tc.getChainId()» = «i.counter1+offset»;
«ENDFOREACH»«ENDLET»«ENDLET»
«LET this.getOwnTriggers() AS triggers»
// triggers for FSM
«FOREACH triggers AS mif»protected static final int «this.getTriggerCodeName(mif)» = IFITEM_«mif.from.name» + EVT_SHIFT*«this.getMessageID(mif)»;
«ENDFOREACH»«ENDLET»
// receiveEvent contains the main implementation of the FSM
@Override
public void receiveEvent(InterfaceItemBase ifitem, int evt, Object generic_data) {
int trigger = ifitem.getLocalId() + EVT_SHIFT*evt;
int chain = NOT_CAUGHT;
int catching_state = NO_STATE;
boolean is_handler = false;
boolean skip_entry = false;
if (!handleSystemEvent(ifitem, evt, generic_data)) {
switch (state) {
«FOREACH this.stateMachine.getLeafStateList() AS state-»
case «state.getStateId()»:
«LET this.getActiveTriggers(state) AS atlist-»
«IF !atlist.isEmpty-»
switch(trigger) {
«FOREACH atlist AS at-»
case «this.getTriggerCodeName(at.trigger)»:
«LET this.hasGuard(at) AS needData-»
«IF needData»{ «at.msg.getTypedDataDefinition()»«ENDIF-»
«FOREACH at.transitions AS tt SEPARATOR " else "-»
«LET this.getChain(tt) AS chain-»
«EXPAND guard(at.trigger, this) FOR chain.transition-»
{
chain = «chain.getChainId()»;
catching_state = «chain.getContextId()»;
«IF chain.isHandler()»is_handler = true;«ENDIF-»
«IF chain.skipEntry»skip_entry = true;«ENDIF-»
}
«ENDLET-»
«ENDFOREACH-»
«IF needData»}«ENDIF-»
«ENDLET-»
break;
«ENDFOREACH-»
}
«ENDIF»«ENDLET-»
break;
«ENDFOREACH-»
}
}
if (chain != NOT_CAUGHT) {
exitTo(state, catching_state, is_handler);
int next = executeTransitionChain(chain, ifitem, generic_data);
next = enterHistory(next, is_handler, skip_entry);
setState(next);
}
}
private void setState(int new_state) {
DebuggingService.getInstance().addActorState(this,stateStrings[new_state]);
if (stateStrings[new_state]!="Idle") {
// TODOTS: model switch for activation
System.out.println(getInstancePath() + " -> " + stateStrings[new_state]);
}
this.state = new_state;
}
@Override
public void executeInitTransition() {
«LET this.stateMachine.getInitTransition() AS initt-»
int chain = «this.getChain(initt).getChainId()»;
int next = executeTransitionChain(chain, null, null);
next = enterHistory(next, false, false);
setState(next);
«ENDLET-»
}
/**
* calls exit codes while exiting from the current state to one of its
* parent states while remembering the history
* @param current - the current state
* @param to - the final parent state
* @param handler - entry and exit codes are called only if not handler (for handler TransitionPoints)
*/
private void exitTo(int current, int to, boolean handler) {
while (current!=to) {
switch (current) {
«FOREACH this.stateMachine.getBaseStateList() AS state-»
case «state.getStateId()»:
«IF state.hasExitCode()»if (!handler) «state.getExitCodeOperationName()»();«ENDIF-»
history[«state.getParentStateId()»] = «state.getStateId()»;
current = «state.getParentStateId()»;
break;
«ENDFOREACH-»
}
}
}
/**
* calls action, entry and exit codes along a transition chain. The generic data are cast to typed data
* matching the trigger of this chain. The ID of the final state is returned
* @param chain - the chain ID
* @param generic_data - the generic data pointer
* @return the ID of the final state
*/
private int executeTransitionChain(int chain, InterfaceItemBase ifitem, Object generic_data) {
switch (chain) {
«LET this.getTransitionChains() AS chains-»
«FOREACH chains AS tc-»
case «tc.getChainId()»:
{
«this.getExecuteChainCode(tc)-»
}
«ENDFOREACH»«ENDLET-»
}
return NO_STATE;
}
/**
* calls entry codes while entering a state's history. The ID of the final leaf state is returned
* @param state - the state which is entered
* @param handler - entry code is executed if not handler
* @return - the ID of the final leaf state
*/
private int enterHistory(int state, boolean handler, boolean skip_entry) {
while (true) {
switch (state) {
«FOREACH this.stateMachine.getBaseStateList() AS state-»
case «state.getStateId()»:
«IF state.hasEntryCode()»if (!(skip_entry || handler)) «state.getEntryCodeOperationName()»();«ENDIF»
«IF state.isLeaf()-»
// in leaf state: return state id
return «state.getStateId()»;
«ELSE-»
// state has a sub graph
«IF state.subgraph.hasInitTransition()-»
// with init transition
if (history[«state.getStateId()»]==NO_STATE) {
«LET state.subgraph.getInitTransition() AS initt-»
state = executeTransitionChain(«this.getChain(initt).getChainId()-», null, null);
«ENDLET-»
}
else {
state = history[«state.getStateId()»];
}
«ELSE-»
// without init transition
state = history[«state.getStateId()»];
«ENDIF-»
break;
«ENDIF-»
«ENDFOREACH-»
case STATE_TOP:
state = history[STATE_TOP];
break;
}
skip_entry = false;
}
«REM»return NO_STATE; // required by CDT but detected as unreachable by JDT because of while (true)«ENDREM»
}
//*** Entry and Exit Codes
«FOREACH this.stateMachine.getStateList() AS state»
«IF this.isOwnObject(state)»
«IF state.hasEntryCode()»
protected void «state.getEntryCodeOperationName()»() {
«this.getEntryCode(state)»}
«ENDIF»
«IF state.hasExitCode()»
protected void «state.getExitCodeOperationName()»() {
«this.getExitCode(state)»}
«ENDIF»
«ENDIF»
«ENDFOREACH»
//*** Action Codes
«FOREACH this.stateMachine.getTransitionList() AS tr»
«IF this.isOwnObject(tr) && tr.hasActionCode()»
protected void «tr.getActionCodeOperationName()»(«IF NonInitialTransition.isInstance(tr)»InterfaceItemBase ifitem«this.getArgumentList(tr)»«ENDIF») {
«this.getActionCode(tr)»}
«ENDIF»
«ENDFOREACH»
//******************************************
// END of generated code for FSM
//******************************************
«ENDLET»
«ENDDEFINE»
«DEFINE guard(String trigger, ExpandedActorClass ac) FOR TriggeredTransition-»
«LET this.triggers.selectFirst(e|ac.isMatching(e, trigger)) AS tr-»
«IF tr.hasGuard()-»
if («ac.getCode(tr.guard.guard)»)
«ENDIF-»
«ENDLET-»
«ENDDEFINE»
«DEFINE guard(String trigger, ExpandedActorClass ac) FOR Transition»
/* error */
«ENDDEFINE»
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