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///////////////////////////////////////////////////////////////////////
// Math Type Library
// $Id: printer.tcc,v 1.7 2002/05/05 10:48:24 cparpart Exp $
// (This file contains the expression stream printer specific template members)
//
// Copyright (c) 2002 by Christian Parpart <cparpart@surakware.net>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with this library; see the file COPYING.LIB. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
///////////////////////////////////////////////////////////////////////
#ifndef libmath_printer_h
#error You may not include math++/printer.tcc directly; include math++/printer.h instead.
#endif
#include <sstream>
namespace math {
template<class T>
TPrinter<T>::TPrinter(std::ostream& AOutput) :
FStream(AOutput) {
}
template<class T>
void TPrinter<T>::printOn(std::ostream& AOutput, const TNode<T> *ANode) {
TPrinter<T> printer(AOutput);
const_cast<TNode<T> *>(ANode)->accept(printer);
}
template<class T>
std::string TPrinter<T>::print(const TNode<T> *ANode) {
std::stringstream sstr;
TPrinter<T> printer(sstr);
const_cast<TNode<T> *>(ANode)->accept(printer);
sstr << std::ends;
return sstr.str();
}
template<class T>
void TPrinter<T>::savePrint(const TNode<T> *ANode, const TNode<T> *AParent) {
#if 1 // ifndef __ENABLE_DEBUG
// just disabled for debugging to see reproduce the node order
bool less = ANode->priority() < AParent->priority() ||
(AParent->nodeType() == TNode<T>::NEG_NODE &&
(ANode->nodeType() == TNode<T>::PLUS_NODE ||
ANode->nodeType() == TNode<T>::NEG_NODE));
#else
bool less = true;//ANode->priority() < AParent->priority();
#endif
if (less)
FStream << "(";
const_cast<TNode<T> *>(ANode)->accept(*this);
if (less)
FStream << ")";
}
template<class T>
void TPrinter<T>::visit(TNumberNode<T> *ANode) {
FStream << ANode->number();
}
template<class T>
void TPrinter<T>::visit(TSymbolNode<T> *ANode) {
FStream << ANode->symbol();
}
template<class T>
void TPrinter<T>::visit(TParamNode<T> *ANode) {
FStream << "x"; // the parameter is usually x,
// so keep this symbol reserved, or override me;)
}
template<class T>
void TPrinter<T>::visit(TPlusNode<T> *ANode) {
savePrint(ANode->left(), ANode);
if (ANode->right()->nodeType() != TNode<T>::NEG_NODE)
FStream << "+";
savePrint(ANode->right(), ANode);
}
template<class T>
void TPrinter<T>::visit(TNegNode<T> *ANode) {
FStream << "-";
savePrint(ANode->node(), ANode);
}
template<class T>
void TPrinter<T>::visit(TMulNode<T> *ANode) {
savePrint(ANode->left(), ANode);
// print 2x isteat of 2*x
// print 2(x+y) instead of 2*(x+y)
// print (a+b)(c+d) instead of (a+b)*(c+d)
//if (!(ANode->left()->nodeType() == TNode<T>::NUMBER_NODE &&
// (ANode->right()->nodeType() == TNode<T>::SYMBOL_NODE ||
// ANode->right()->nodeType() == TNode<T>::PARAM_NODE)))
FStream << "*";
savePrint(ANode->right(), ANode);
}
template<class T>
void TPrinter<T>::visit(TDivNode<T> *ANode) {
savePrint(ANode->left(), ANode);
FStream << "/";
savePrint(ANode->right(), ANode);
}
template<class T>
void TPrinter<T>::visit(TPowNode<T> *ANode) {
savePrint(ANode->left(), ANode);
FStream << "^";
savePrint(ANode->right(), ANode);
}
template<class T>
void TPrinter<T>::visit(TSqrtNode<T> *ANode) {
FStream << "sqrt(";
ANode->node()->accept(*this);
FStream << ")";
}
template<class T>
void TPrinter<T>::visit(TSinNode<T> *ANode) {
FStream << "sin(";
ANode->node()->accept(*this);
FStream << ")";
}
template<class T>
void TPrinter<T>::visit(TCosNode<T> *ANode) {
FStream << "cos(";
ANode->node()->accept(*this);
FStream << ")";
}
template<class T>
void TPrinter<T>::visit(TTanNode<T> *ANode) {
FStream << "tan(";
ANode->node()->accept(*this);
FStream << ")";
}
template<class T>
void TPrinter<T>::visit(TLnNode<T> *ANode) {
FStream << "ln(";
ANode->node()->accept(*this);
FStream << ")";
}
template<class T>
void TPrinter<T>::visit(TFuncNode<T> *ANode) {
FStream << ANode->name() << "(";
ANode->node()->accept(*this);
FStream << ")";
}
template<class T>
void TPrinter<T>::visit(TIfNode<T> *ANode) {
FStream << "IF(";
ANode->condition()->accept(*this);
FStream << ", ";
ANode->trueExpr()->accept(*this);
FStream << ", ";
ANode->falseExpr()->accept(*this);
FStream << ")";
}
template<class T>
void TPrinter<T>::visit(TEquNode<T> *ANode) {
ANode->left()->accept(*this);
FStream << "=";
ANode->right()->accept(*this);
}
template<class T>
void TPrinter<T>::visit(TUnEquNode<T> *ANode) {
ANode->left()->accept(*this);
FStream << "<>";
ANode->right()->accept(*this);
}
template<class T>
void TPrinter<T>::visit(TGreaterNode<T> *ANode) {
ANode->left()->accept(*this);
FStream << ">";
ANode->right()->accept(*this);
}
template<class T>
void TPrinter<T>::visit(TLessNode<T> *ANode) {
ANode->left()->accept(*this);
FStream << "<";
ANode->right()->accept(*this);
}
template<class T>
void TPrinter<T>::visit(TGreaterEquNode<T> *ANode) {
ANode->left()->accept(*this);
FStream << ">=";
ANode->right()->accept(*this);
}
template<class T>
void TPrinter<T>::visit(TLessEquNode<T> *ANode) {
ANode->left()->accept(*this);
FStream << "<=";
ANode->right()->accept(*this);
}
/*template<class T>
std::ostream& operator<< <T>(std::ostream& os, const TNode<T>& ANode) {
TPrinter<T>::print(os, &ANode);
return os;
}*/
} // namespace math
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