/**
* Emits C header code for the FSM map.
*
* @param map emit Groovy code for this map.
*/
public void visit(SmcMap map) {
String packageName = map.getFSM().getPackage();
String context = map.getFSM().getContext();
String mapName = map.getName();
// If a package has been specified,
if (packageName != null && packageName.length() > 0) {
context = packageName + "_" + context;
}
for (SmcState state : map.getStates()) {
_source.print("extern const struct ");
_source.print(context);
_source.print("State ");
if (packageName != null && packageName.length() > 0) {
_source.print(packageName);
_source.print("_");
}
_source.print(mapName);
_source.print("_");
_source.print(state.getInstanceName());
_source.println(";");
}
return;
} // end of visit(SmcMap)
/**
* Emits C header code for the finite state machine.
*
* @param fsm emit Groovy code for this finite state machine.
*/
public void visit(SmcFSM fsm) {
String targetfileCaps;
String packageName = fsm.getPackage();
String context = fsm.getContext();
String fsmClassName = fsm.getFsmClassName();
String startStateName = fsm.getStartState();
String cState;
List<SmcTransition> transList;
List<SmcParameter> params;
int index;
_source.println("/*");
_source.println(" * ex: set ro:");
_source.println(" * DO NOT EDIT.");
_source.println(" * generated by smc (http://smc.sourceforge.net/)");
_source.print(" * from file : ");
_source.print(_srcfileBase);
_source.println(".sm");
_source.println(" */");
_source.println();
// If a package has been specified,
if (packageName != null && packageName.length() > 0) {
context = packageName + "_" + context;
fsmClassName = packageName + "_" + fsmClassName;
startStateName = packageName + "_" + startStateName;
}
// The first two lines in the header file should be:
//
// #ifndef _<source file name>_H
// #define _<source file name>_H
//
// where the source file name is all in caps.
// The last line is:
//
// #endif
//
// Make the file name upper case and replace
// slashes with underscores.
targetfileCaps = _targetfileBase.replace('\\', '_');
targetfileCaps = targetfileCaps.replace('/', '_');
targetfileCaps = targetfileCaps.toUpperCase();
_source.print("#ifndef _");
_source.print(targetfileCaps);
_source.println("_H");
_source.print("#define _");
_source.print(targetfileCaps);
_source.println("_H");
// Include required standard .h files.
_source.println();
_source.println("#include <assert.h>");
if (_debugLevel >= DEBUG_LEVEL_0) {
_source.println("#define STATEMAP_DEBUG 1");
}
_source.println("#include <statemap.h>");
_source.println();
// Do user-specified forward declarations now.
for (String declaration : fsm.getDeclarations()) {
_source.print(declaration);
_source.println();
}
// Forward declare the application class.
_source.println();
_source.print("struct ");
_source.print(context);
_source.println(";");
_source.print("struct ");
_source.print(fsmClassName);
_source.println(";");
// Declare user's base state class.
_source.println();
_source.print("struct ");
_source.print(context);
_source.println("State {");
// Add the default Entry() and Exit() definitions.
if (fsm.hasEntryActions() == true) {
_source.print(" void(*Entry)(struct ");
_source.print(fsmClassName);
_source.println(" *const fsm);");
}
if (fsm.hasExitActions() == true) {
_source.print(" void(*Exit)(struct ");
_source.print(fsmClassName);
_source.println(" *const fsm);");
}
// Print out the default definitions for all the
// transitions. First, get the transitions list.
transList = fsm.getTransitions();
// Output the global transition declarations.
for (SmcTransition trans : transList) {
// Don't output the default state here.
if (trans.getName().equals("Default") == false) {
_source.print(" void(*");
_source.print(trans.getName());
_source.print(")(struct ");
_source.print(fsmClassName);
_source.print(" *const fsm");
params = trans.getParameters();
for (SmcParameter param : params) {
_source.print(", ");
_source.print(param.getType());
_source.print(" ");
_source.print(param.getName());
}
_source.println(");");
}
}
_source.print(" void(*Default)(struct ");
_source.print(fsmClassName);
_source.println(" *const fsm);");
_source.println(" STATE_MEMBERS");
// The base class has been defined.
_source.println("};");
_source.println();
// Generate the map classes. The maps will, in turn,
// generate the state classes.
for (SmcMap map : fsm.getMaps()) {
map.accept(this);
}
// Generate the FSM context class.
_source.println();
_source.print("struct ");
_source.print(fsmClassName);
_source.println(" {");
_source.print(" struct ");
_source.print(context);
_source.println(" *_owner;");
_source.print(" FSM_MEMBERS(");
_source.print(context);
_source.println(")");
// Put the closing brace on the context class.
_source.println("};");
_source.println();
// The state name "map::state" must be changed to
// "map_state".
if ((index = startStateName.indexOf("::")) >= 0) {
cState = startStateName.substring(0, index) + "_" + startStateName.substring(index + 2);
} else {
cState = startStateName;
}
_source.print("#ifdef NO_");
_source.print(targetfileCaps);
_source.println("_MACRO");
// Constructor
_source.print("extern void ");
_source.print(fsmClassName);
_source.print("_Init");
_source.print("(struct ");
_source.print(fsmClassName);
_source.print(" *const fsm, struct ");
_source.print(context);
_source.println(" *const owner);");
// EnterStartState method.
if (fsm.hasEntryActions() == true) {
_source.print("extern void ");
_source.print(fsmClassName);
_source.print("_EnterStartState(struct ");
_source.print(fsmClassName);
_source.println(" *const fsm);");
}
// Generate a method for every transition in every map
// *except* the default transition.
for (SmcTransition trans : transList) {
if (trans.getName().equals("Default") == false) {
_source.print("extern void ");
_source.print(fsmClassName);
_source.print("_");
_source.print(trans.getName());
_source.print("(struct ");
_source.print(fsmClassName);
_source.print(" *const fsm");
params = trans.getParameters();
for (SmcParameter param : params) {
_source.print(", ");
_source.print(param.getType());
_source.print(" ");
_source.print(param.getName());
}
_source.println(");");
}
}
_source.println("#else");
// Constructor
_source.print("#define ");
_source.print(fsmClassName);
_source.println("_Init(fsm, owner) \\");
_source.print(" FSM_INIT((fsm), &");
_source.print(cState);
_source.println("); \\");
_source.println(" (fsm)->_owner = (owner)");
// EnterStartState method.
if (fsm.hasEntryActions() == true) {
_source.println();
_source.print("#define ");
_source.print(fsmClassName);
_source.println("_EnterStartState(fsm) \\");
_source.println(" ENTRY_STATE(getState(fsm))");
}
// Generate a method for every transition in every map
// *except* the default transition.
for (SmcTransition trans : transList) {
if (trans.getName().equals("Default") == false) {
_source.println();
_source.print("#define ");
_source.print(fsmClassName);
_source.print("_");
_source.print(trans.getName());
_source.print("(fsm");
params = trans.getParameters();
for (SmcParameter param : params) {
_source.print(", ");
_source.print(param.getName());
}
_source.println(") \\");
_source.println(" assert(getState(fsm) != NULL); \\");
_source.print(" setTransition((fsm), \"");
_source.print(trans.getName());
_source.println("\"); \\");
_source.print(" getState(fsm)->");
_source.print(trans.getName());
_source.print("((fsm)");
for (SmcParameter param : params) {
_source.print(", (");
_source.print(param.getName());
_source.print(")");
}
_source.println("); \\");
_source.println(" setTransition((fsm), NULL)");
}
}
_source.println("#endif");
_source.println();
_source.println("#endif");
_source.println();
_source.println("/*");
_source.println(" * Local variables:");
_source.println(" * buffer-read-only: t");
_source.println(" * End:");
_source.println(" */");
return;
} // end of visit(SmcFSM)