void UmlTransition::generate(Q3PtrList<UmlTransition> trs, UmlClass * machine, UmlClass * anystate, UmlState * state, Q3CString & body, Q3CString indent, bool completion)
{
UmlTransition * tr;
bool guard = FALSE;
for (tr = trs.first(); tr != 0; tr = trs.next()) {
body += indent;
if (!tr->cppGuard().isEmpty()) {
// manage guard
body += ((tr == trs.getFirst()) ? "if (" : "else if (")
+ tr->cppGuard() + ") {\n";
guard = TRUE;
}
else
// no gard : it is the last transition, may be the first
body += ((tr == trs.getFirst()) ? "{\n" : "else {\n");
// the target state
UmlItem * tg = tr->target();
bool self_external = (state == tg) && tr->isExternal();
while (tg->kind() != aState)
tg = tg->parent();
// the parent common to the current and the target state
UmlState * common = state;
if (self_external) {
// execute exit behavior
if (!state->cppExitBehavior().isEmpty())
body += indent + " _doexit(stm);\n";
}
else {
bool fromExit =
// the exit behavior is made entering in the exit point
(tr->parent()->kind() == anExitPointPseudoState);
// compute common parent and manage exit behavior
if (tr->target()->kind() != aTerminatePseudoState) {
while (!((UmlState *) tg)->inside(common)) {
if (!fromExit && !common->cppExitBehavior().isEmpty())
body += indent + " stm" + common->path() + "._doexit(stm);\n";
fromExit = FALSE;
switch (common->parent()->kind()) {
case aState:
common = (UmlState *) common->parent();
break;
case aRegion:
common = (UmlState *) common->parent()->parent();
break;
default:
UmlCom::trace("Error : transition from '" + state->name()
+ "' goes outside the state machine");
throw 0;
}
}
}
}
// manage transition activity
if (!tr->cppActivity().isEmpty())
body += "#ifdef VERBOSE_STATE_MACHINE\n" + indent +
" puts(\"DEBUG : execute activity of transition " + tr->name() +
"\");\n#endif\n" + tr->cppActivity();
// manage entry behavior
if (self_external) {
if (state->needCreate())
body += indent + " create(stm);\n";
}
else if (tr->target()->kind() != aTerminatePseudoState) {
if (tg != common) {
Q3CString enter;
UmlState * tg_parent;
// the enter behavior of the target state will be managed
// generating a call to create
for (tg_parent = (UmlState *) tg->parent();
tg_parent != common;
tg_parent = (UmlState *) tg_parent->parent())
if (!tg_parent->cppEntryBehavior().isEmpty())
enter.insert(0,
(const char *)(indent + " stm" + tg_parent->path() + "._doentry(stm);\n")); //[rageek] ambiguous
if (!enter.isEmpty())
body += enter;
}
// set the current state if needed
if (tg != state)
body += indent + " stm._set_currentState(stm"
+ ((UmlState *) tg)->path() + ");\n#ifdef VERBOSE_STATE_MACHINE\n" +
indent + " puts(\"DEBUG : current state is now " + ((UmlState *) tg)->prettyPath() +
"\");\n#endif\n";
}
// do the transition
if (tr->target()->kind() == aState) {
if ((tg != state) && ((UmlState *) tg)->needCreate())
body += indent + " stm"
+ ((UmlState *) tg)->path() + ".create(stm);\n";
}
else
tr->target()->generate(machine, anystate, ((UmlState *) tg), body, indent + " ");
if (completion)
body += indent + " return (bool) 1;\n";
body += indent + "}\n";
}
if (completion && guard)
body += indent + "return (bool) 0;\n";
}
