/**
* Fit a variable into an argument according to the argument rule. If necessary and
* appropriate, we do type conversion or type promotion.
*
*
*
* @todo To conform to the old code we change the required type of the incoming
* variable wrapper here. We need to change this so that we do not change
* the wrapper here, but make sure that if the argument variable is inserted
* in a member variable or container element slot, that the slot variable
* wrapper, which should be unique (not the same as the incoming variable
* wrapper), has the right required type.
*/
Argument ArgumentRule::fitArgument( Argument& arg, bool once ) const
{
RevPtr<RevVariable> theVar = arg.getVariable();
if ( evalType == BY_VALUE || theVar->isWorkspaceVariable() || theVar->getRevObject().isConstant() )
{
once = true;
}
for ( std::vector<TypeSpec>::const_iterator it = argTypeSpecs.begin(); it != argTypeSpecs.end(); ++it )
{
if ( evalType == BY_VALUE )
{
if ( theVar->getRevObject().isType( *it ) )
{
RevPtr<RevVariable> valueVar = RevPtr<RevVariable>( new RevVariable(theVar->getRevObject().clone(),arg.getLabel()) );
return Argument( valueVar, getArgumentLabel(), false );
}
else if ( theVar->getRevObject().isConvertibleTo( *it, once ) != -1)
{
// Fit by type conversion. For now, we also modify the type of the incoming variable wrapper.
RevObject* convertedObject = theVar->getRevObject().convertTo( *it );
RevPtr<RevVariable> valueVar = RevPtr<RevVariable>( new RevVariable(convertedObject,arg.getLabel()) );
return Argument( valueVar, getArgumentLabel(), false );
}
} // if (by-value)
else
{
if ( theVar->getRevObject().isType( *it ) )
{
// For now, change the required type of the incoming variable wrapper
theVar->setRequiredTypeSpec( *it );
if ( !isEllipsis() )
{
return Argument( theVar, getArgumentLabel(), evalType == BY_CONSTANT_REFERENCE );
}
else
{
return Argument( theVar, arg.getLabel(), true );
}
}
else if ( theVar->getRevObject().isConvertibleTo( *it, once ) != -1 && (*it).isDerivedOf( theVar->getRequiredTypeSpec() ))
{
// Fit by type conversion. For now, we also modify the type of the incoming variable wrapper.
RevObject* convertedObject = theVar->getRevObject().convertTo( *it );
theVar->replaceRevObject( convertedObject );
theVar->setRequiredTypeSpec( *it );
if ( !isEllipsis() )
{
return Argument( theVar, getArgumentLabel(), false );
}
else
{
return Argument( theVar, arg.getLabel(), false );
}
}
else
{
// Fit by type conversion function
const TypeSpec& typeFrom = theVar->getRevObject().getTypeSpec();
const TypeSpec& typeTo = *it;
// create the function name
std::string functionName = "_" + typeFrom.getType() + "2" + typeTo.getType();
// Package arguments
std::vector<Argument> args;
Argument theArg = Argument( theVar, "arg" );
args.push_back( theVar );
Environment& env = Workspace::globalWorkspace();
try
{
Function* func = env.getFunction(functionName, args, once).clone();
// Allow the function to process the arguments
func->processArguments( args, once );
// Set the execution environment of the function
func->setExecutionEnviroment( &env );
// Evaluate the function
RevPtr<RevVariable> conversionVar = func->execute();
// free the memory
delete func;
conversionVar->setHiddenVariableState( true );
conversionVar->setRequiredTypeSpec( *it );
return Argument( conversionVar, getArgumentLabel(), evalType == BY_CONSTANT_REFERENCE );
}
catch (RbException e)
{
// we do nothing here
}
} // else (type conversion function)
} // else (not by-value)
}
std::cerr << "Once = " << (once ? "TRUE" : "FALSE") << std::endl;
throw RbException( "Argument type mismatch fitting a " + theVar->getRevObject().getType() + " argument to formal " +
getArgumentTypeSpec()[0].getType() + " " + getArgumentLabel() );
}
/**
* Fit a variable into an argument according to the argument rule. If necessary and
* appropriate, we do type conversion or type promotion.
*
* @todo The constant flag is currently not used correctly in ArgumentRule. Therefore,
* we ignore it here for now. This needs to be changed.
*
* @todo We need to check whether workspace objects with member variables are
* modifiable by the user.
*
* @todo To conform to the old code we change the required type of the incoming
* variable wrapper here. We need to change this so that we do not change
* the wrapper here, but make sure that if the argument variable is inserted
* in a member variable or container element slot, that the slot variable
* wrapper, which should be unique (not the same as the incoming variable
* wrapper), has the right required type.
*/
Argument ArgumentRule::fitArgument( Argument& arg, bool once ) const
{
// TODO: Use this code when the constant flag in ArgumentRule is used correctly
// if ( isConstant() || !theVar->isAssignable() )
if ( evalType == BY_VALUE )
{
once = true;
}
RevPtr<Variable> theVar = arg.getVariable();
for ( std::vector<TypeSpec>::const_iterator it = argTypeSpecs.begin(); it != argTypeSpecs.end(); ++it )
{
if ( theVar->getRevObject().isTypeSpec( *it ) )
{
// For now, change the required type of the incoming variable wrapper
theVar->setRevObjectTypeSpec( *it );
if ( !isEllipsis() )
return Argument( theVar, getArgumentLabel(), evalType == BY_CONSTANT_REFERENCE );
else
return Argument( theVar, arg.getLabel(), true );
}
else if ( once == false &&
!theVar->isAssignable() &&
theVar->getRevObject().isConvertibleTo( *it, true ) &&
(*it).isDerivedOf( theVar->getRevObjectTypeSpec() )
)
{
// Fit by type promotion. For now, we also modify the type of the incoming variable wrapper.
RevObject* convertedObject = theVar->getRevObject().convertTo( *it );
theVar->setRevObject( convertedObject );
theVar->setRevObjectTypeSpec( *it );
if ( !isEllipsis() )
return Argument( theVar, getArgumentLabel(), evalType == BY_CONSTANT_REFERENCE );
else
return Argument( theVar, arg.getLabel(), true );
}
else if ( theVar->getRevObject().isConvertibleTo( *it, once ) )
{
// Fit by type conversion
if ( once || !theVar->getRevObject().hasDagNode() )
{
RevObject* convertedObject = theVar->getRevObject().convertTo( *it );
Variable* convertedVar = new Variable( convertedObject );
convertedVar->setRevObjectTypeSpec( *it );
if ( !isEllipsis() )
return Argument( convertedVar, getArgumentLabel(), evalType == BY_CONSTANT_REFERENCE );
else
return Argument( convertedVar, arg.getLabel(), true );
}
else
{
RevObject* conversionObject = theVar->getRevObject().convertTo( *it );
conversionObject->makeConversionValue( theVar );
Variable* conversionVar = new Variable( conversionObject );
conversionVar->setRevObjectTypeSpec( *it );
if ( !isEllipsis() )
return Argument( conversionVar, getArgumentLabel(), evalType == BY_CONSTANT_REFERENCE );
else
return Argument( conversionVar, arg.getLabel(), true );
}
}
}
throw RbException( "Argument type mismatch fitting a " + theVar->getRevObject().getType() + " argument to formal " +
getArgumentTypeSpec()[0].getType() + " " + getArgumentLabel() );
}
