@Override
public int check(final int locals) throws ContextError, HeapTooSmallError {
if (locals >= 0) {
throw new ContextError("Function declarations are only allowed globally!", ident.getLine());
}
Routine routine = IMLCompiler.getRoutineTable().getRoutine(ident.getIdent().toString());
IMLCompiler.setScope(routine.getScope());
Store retStore = returnDecl.check();
retStore.setAddress(-routine.getParamList().size() - 1);
retStore.setReference(false);
retStore.setRelative(true);
globImp.check(routine);
int localsCount = param.calculateAddress(routine.getParamList().size(), 0);
cpsDecl.check(localsCount);
cmd.check(false);
if (!routine.getScope().getStoreTable().getStore(returnDecl.getIdent()).isInitialized()) {
throw new ContextError(
"Return value never initialized! Function: " + ident.getIdent(), ident.getLine());
}
IMLCompiler.setScope(null);
return -1;
}
@Override
public void checkDeclaration() throws ContextError {
Function function = new Function(ident.getIdent().toString(), returnDecl.getType());
IMLCompiler.setScope(function.getScope());
if (!IMLCompiler.getRoutineTable().addRoutine(function)) {
throw new ContextError("Routine already declared: " + ident.getIdent(), ident.getLine());
}
param.check(function);
IMLCompiler.setScope(null);
}
@Override
public String toString(final String indent) {
return indent
+ "<FunDecl>\n"
+ ident.toString(indent + '\t')
+ param.toString(indent + '\t')
+ returnDecl.toString(indent + '\t')
+ globImp.toString(indent + '\t')
+ cpsDecl.toString(indent + '\t')
+ cmd.toString(indent + '\t')
+ indent
+ "</FunDecl>\n";
}
@Override
public int code(final int loc) throws CodeTooSmallError {
int loc1 = loc;
Routine routine = IMLCompiler.getRoutineTable().getRoutine(ident.getIdent().toString());
IMLCompiler.setScope(routine.getScope());
routine.setAddress(loc1);
IMLCompiler.getVM().Enter(loc1++, routine.getInOutCopyCount() + cpsDecl.getCount(), 0);
loc1 = param.codeIn(loc1, routine.getParamList().size(), 0);
loc1 = cmd.code(loc1);
loc1 = param.codeOut(loc1, routine.getParamList().size(), 0);
IMLCompiler.getVM().Return(loc1++, 1);
IMLCompiler.setScope(null);
return loc1;
}
@Override
public int getLine() {
return ident.getLine();
}
