std::shared_ptr<ExpressionNode> DivisionNode::evaluate(Environment* e)
{
std::shared_ptr<ExpressionNode> left = a->evaluate(e);
std::shared_ptr<ExpressionNode> right = b->evaluate(e);
ConstantNode* cLeft = dynamic_cast<ConstantNode*>(&*left);
ConstantNode* cRight = dynamic_cast<ConstantNode*>(&*right);
if (cLeft != 0 && cRight != 0) {
IntegerNode* iLeft = dynamic_cast<IntegerNode*>(cLeft);
IntegerNode* iRight = dynamic_cast<IntegerNode*>(cRight);
RealNode* rLeft = dynamic_cast<RealNode*>(cLeft);
RealNode* rRight = dynamic_cast<RealNode*>(cRight);
if (iLeft != 0 && iRight != 0) {
return shared_from_this();
}
if (iLeft != 0 && rRight != 0) {
return std::make_shared<RealNode>
(iLeft->getValue() / rRight->getValue());
}
if (rLeft != 0 && iRight != 0) {
return std::make_shared<RealNode>
(rLeft->getValue() / iRight->getValue());
}
if (rLeft != 0 && rRight != 0) {
return std::make_shared<RealNode>
(rLeft->getValue() / rRight->getValue());
}
return 0;
} else {
return std::make_shared<DivisionNode>(left, right);
}
}
std::string SubtractionNode::getString(void) const
{
bool zero = false;
IntegerNode* in;
if ((in = dynamic_cast<IntegerNode*>(a.get())) != 0) {
if (in->getValue() == 0)
zero = true;
}
if (dynamic_cast<PlusMinus*> (b.get()) != 0) {
return (!zero ? (a->getString() + " ") : "") + getOperator() +
(zero ? "" : " ") + "(" + b->getString() + ")";
}
else
return (!zero ? (a->getString() + " ") : "") + getOperator() +
(zero ? "" : " ") + b->getString();
}
/**
* Transform a IntegerNode to a XML node.
*
* @param node A settings tree node representing a integer node.
* @param parent The parent node of the XML document.
*/
Void XmlSettingsTree::settingsTreeToXml( IntegerNode& node, TiXmlNode& parent ) {
TiXmlElement* element = new TiXmlElement( XMLSETTINGSTREE_INTEGER_ELEMENT );
TiXmlText* text = new TiXmlText( TextUtils::doubleToString( node.getValue(), 0 ).c_str() );
element->LinkEndChild( text );
parent.LinkEndChild( element );
}
std::shared_ptr<ExpressionNode> PowerNode::evaluate(Environment* e)
{
std::shared_ptr<ExpressionNode> left = a->evaluate(e);
std::shared_ptr<ExpressionNode> right = b->evaluate(e);
ConstantNode* cLeft = dynamic_cast<ConstantNode*>(&*left);
ConstantNode* cRight = dynamic_cast<ConstantNode*>(&*right);
if (cLeft != 0 && cRight != 0) {
IntegerNode* iLeft = dynamic_cast<IntegerNode*>(cLeft);
IntegerNode* iRight = dynamic_cast<IntegerNode*>(cRight);
RealNode* rLeft = dynamic_cast<RealNode*>(cLeft);
RealNode* rRight = dynamic_cast<RealNode*>(cRight);
if (iLeft != 0 && iRight != 0) {
return std::make_shared<IntegerNode>
(::pow(iLeft->getValue(), iRight->getValue()));
}
if (iLeft != 0 && rRight != 0) {
return std::make_shared<RealNode>
(::pow(iLeft->getValue(), rRight->getValue()));
}
if (rLeft != 0 && iRight != 0) {
return std::make_shared<RealNode>
(::pow(rLeft->getValue(), iRight->getValue()));
}
if (rLeft != 0 && rRight != 0) {
return std::make_shared<RealNode>
(::pow(rLeft->getValue(), rRight->getValue()));
}
return 0;
} else {
IntegerNode* iLeft = dynamic_cast<IntegerNode*>(cLeft);
IntegerNode* iRight = dynamic_cast<IntegerNode*>(cRight);
if (iLeft != 0 && iLeft->getValue() == 1) {
return std::make_shared<IntegerNode>(1);
}
if (iRight != 0 && iRight->getValue() == 1) {
return left;
}
return std::make_shared<PowerNode>(left, right);
}
}
std::shared_ptr<ExpressionNode> ModuloNode::evaluate(Environment* e)
{
std::shared_ptr<ExpressionNode> left = a->evaluate(e);
std::shared_ptr<ExpressionNode> right = b->evaluate(e);
ConstantNode* cLeft = dynamic_cast<ConstantNode*>(&*left);
ConstantNode* cRight = dynamic_cast<ConstantNode*>(&*right);
if (cLeft != 0 && cRight != 0) {
IntegerNode* iLeft = dynamic_cast<IntegerNode*>(cLeft);
IntegerNode* iRight = dynamic_cast<IntegerNode*>(cRight);
RealNode* rLeft = dynamic_cast<RealNode*>(cLeft);
RealNode* rRight = dynamic_cast<RealNode*>(cRight);
if (iLeft != 0 && iRight != 0) {
return std::make_shared<IntegerNode>
(iLeft->getValue() % iRight->getValue());
}
throw ArithmeticException("modulo operator only defined for integer operands!");
} else {
return std::make_shared<ModuloNode>(left, right);
}
}
// [<value>I]
void visit( IntegerNode aNode ) {
std::cout << " [" << aNode.getValue() << "I]";
}