timoore
9861d74221
Include standard header files and qualify with std:: where needed. Add "const" to various char parameters and variables.
640 lines
20 KiB
C++
640 lines
20 KiB
C++
/* -*-c++-*-
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*
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* Copyright (C) 2006-2007 Mathias Froehlich
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include <simgear_config.h>
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#endif
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#include "SGExpression.hxx"
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#include <string>
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#include <sstream>
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#include <simgear/props/props.hxx>
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template<typename T>
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static bool
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SGReadValueFromString(const char* str, T& value)
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{
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if (!str) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read string content.");
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return false;
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}
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std::stringstream s;
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s.str(std::string(str));
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s >> value;
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if (s.fail()) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read string content.");
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return false;
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}
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return true;
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}
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template<>
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bool
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SGReadValueFromString(const char* str, bool& value)
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{
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if (!str) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read string content.");
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return false;
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}
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std::stringstream s;
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s.str(std::string(str));
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s >> value;
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if (!s.fail())
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return true;
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std::string stdstr;
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if (!SGReadValueFromString(str, stdstr))
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return false;
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if (stdstr == "true" || stdstr == "True" || stdstr == "TRUE") {
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value = true;
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return true;
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}
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if (stdstr == "false" || stdstr == "False" || stdstr == "FALSE") {
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value = true;
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return true;
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}
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return false;
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}
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template<typename T>
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static bool
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SGReadValueFromContent(const SGPropertyNode *node, T& value)
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{
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if (!node)
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return false;
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return SGReadValueFromString(node->getStringValue(), value);
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}
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template<typename T>
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static SGExpression<T>*
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SGReadIExpression(SGPropertyNode *inputRoot, const SGPropertyNode *expression);
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template<typename T>
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static bool
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SGReadNaryOperands(SGNaryExpression<T>* nary,
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SGPropertyNode *inputRoot, const SGPropertyNode *expression)
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{
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for (int i = 0; i < expression->nChildren(); ++i) {
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SGExpression<T>* inputExpression;
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inputExpression = SGReadIExpression<T>(inputRoot, expression->getChild(i));
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if (!inputExpression)
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return false;
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nary->addOperand(inputExpression);
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}
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return true;
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}
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// template<typename T>
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// static SGExpression<T>*
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// SGReadBExpression(SGPropertyNode *inputRoot, const SGPropertyNode *expression)
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// {
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// if (!expression)
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// return 0;
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// std::string name = expression->getName();
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// if (name == "value") {
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// T value;
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// if (!SGReadValueFromContent(expression, value)) {
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// SG_LOG(SG_IO, SG_ALERT, "Cannot read \"value\" expression.");
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// return 0;
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// }
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// return new SGConstExpression<T>(value);
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// }
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// return 0;
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// }
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template<typename T>
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static SGExpression<T>*
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SGReadIExpression(SGPropertyNode *inputRoot, const SGPropertyNode *expression)
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{
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if (!expression)
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return 0;
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std::string name = expression->getName();
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if (name == "value") {
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T value;
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if (!SGReadValueFromContent(expression, value)) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"value\" expression.");
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return 0;
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}
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return new SGConstExpression<T>(value);
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}
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if (name == "property") {
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if (!inputRoot) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.\n"
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"No inputRoot argument given!");
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return 0;
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}
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if (!expression->getStringValue()) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGPropertyNode* inputNode;
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inputNode = inputRoot->getNode(expression->getStringValue(), true);
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return new SGPropertyExpression<T>(inputNode);
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}
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if (name == "abs" || name == "fabs") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadIExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGAbsExpression<T>(inputExpression);
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}
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if (name == "sqr") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadIExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGSqrExpression<T>(inputExpression);
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}
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if (name == "clip") {
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if (expression->nChildren() != 3) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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const SGPropertyNode* minProperty = expression->getChild("clipMin");
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T clipMin;
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if (!SGReadValueFromContent(minProperty, clipMin))
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clipMin = SGMisc<T>::min(SGLimits<T>::min(), -SGLimits<T>::max());
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const SGPropertyNode* maxProperty = expression->getChild("clipMax");
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T clipMax;
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if (!SGReadValueFromContent(maxProperty, clipMax))
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clipMin = SGLimits<T>::max();
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SGSharedPtr<SGExpression<T> > inputExpression;
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for (int i = 0; !inputExpression && i < expression->nChildren(); ++i)
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inputExpression = SGReadIExpression<T>(inputRoot, expression->getChild(i));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGClipExpression<T>(inputExpression, clipMin, clipMax);
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}
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if (name == "div") {
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if (expression->nChildren() != 2) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpressions[2] = {
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SGReadIExpression<T>(inputRoot, expression->getChild(0)),
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SGReadIExpression<T>(inputRoot, expression->getChild(1))
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};
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if (!inputExpressions[0] || !inputExpressions[1]) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGDivExpression<T>(inputExpressions[0], inputExpressions[1]);
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}
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if (name == "mod") {
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if (expression->nChildren() != 2) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpressions[2] = {
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SGReadIExpression<T>(inputRoot, expression->getChild(0)),
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SGReadIExpression<T>(inputRoot, expression->getChild(1))
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};
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if (!inputExpressions[0] || !inputExpressions[1]) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGModExpression<T>(inputExpressions[0], inputExpressions[1]);
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}
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if (name == "sum") {
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if (expression->nChildren() < 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSumExpression<T>* output = new SGSumExpression<T>;
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if (!SGReadNaryOperands(output, inputRoot, expression)) {
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delete output;
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return output;
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}
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if (name == "prod" || name == "product") {
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if (expression->nChildren() < 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGProductExpression<T>* output = new SGProductExpression<T>;
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if (!SGReadNaryOperands(output, inputRoot, expression)) {
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delete output;
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return output;
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}
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if (name == "min") {
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if (expression->nChildren() < 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGMinExpression<T>* output = new SGMinExpression<T>;
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if (!SGReadNaryOperands(output, inputRoot, expression)) {
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delete output;
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return output;
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}
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if (name == "max") {
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if (expression->nChildren() < 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGMaxExpression<T>* output = new SGMaxExpression<T>;
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if (!SGReadNaryOperands(output, inputRoot, expression)) {
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delete output;
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return output;
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}
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return 0;
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}
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template<typename T>
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static SGExpression<T>*
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SGReadFExpression(SGPropertyNode *inputRoot, const SGPropertyNode *expression)
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{
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SGExpression<T>* r = SGReadIExpression<T>(inputRoot, expression);
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if (r)
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return r;
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if (!expression)
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return 0;
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std::string name = expression->getName();
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if (name == "acos") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGACosExpression<T>(inputExpression);
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}
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if (name == "asin") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGASinExpression<T>(inputExpression);
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}
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if (name == "atan") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGATanExpression<T>(inputExpression);
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}
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if (name == "ceil") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGCeilExpression<T>(inputExpression);
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}
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if (name == "cos") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGCosExpression<T>(inputExpression);
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}
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if (name == "cosh") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGCoshExpression<T>(inputExpression);
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}
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if (name == "deg2rad") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGScaleExpression<T>(inputExpression, SGMisc<T>::pi()/180);
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}
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if (name == "exp") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGExpExpression<T>(inputExpression);
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}
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if (name == "floor") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGFloorExpression<T>(inputExpression);
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}
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if (name == "log") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGLogExpression<T>(inputExpression);
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}
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if (name == "log10") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGLog10Expression<T>(inputExpression);
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}
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if (name == "rad2deg") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGScaleExpression<T>(inputExpression, 180/SGMisc<T>::pi());
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}
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if (name == "sin") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
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inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
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if (!inputExpression) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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return new SGSinExpression<T>(inputExpression);
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}
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if (name == "sinh") {
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if (expression->nChildren() != 1) {
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SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
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return 0;
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}
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SGSharedPtr<SGExpression<T> > inputExpression;
|
|
inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
|
|
if (!inputExpression) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
return new SGSinhExpression<T>(inputExpression);
|
|
}
|
|
|
|
if (name == "sqrt") {
|
|
if (expression->nChildren() != 1) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
SGSharedPtr<SGExpression<T> > inputExpression;
|
|
inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
|
|
if (!inputExpression) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
return new SGSqrtExpression<T>(inputExpression);
|
|
}
|
|
|
|
if (name == "tan") {
|
|
if (expression->nChildren() != 1) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
SGSharedPtr<SGExpression<T> > inputExpression;
|
|
inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
|
|
if (!inputExpression) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
return new SGTanExpression<T>(inputExpression);
|
|
}
|
|
|
|
if (name == "tanh") {
|
|
if (expression->nChildren() != 1) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
SGSharedPtr<SGExpression<T> > inputExpression;
|
|
inputExpression = SGReadFExpression<T>(inputRoot, expression->getChild(0));
|
|
if (!inputExpression) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
return new SGTanhExpression<T>(inputExpression);
|
|
}
|
|
|
|
// if (name == "table") {
|
|
// }
|
|
// if (name == "step") {
|
|
// }
|
|
// if (name == "condition") {
|
|
// }
|
|
|
|
if (name == "atan2") {
|
|
if (expression->nChildren() != 2) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
SGSharedPtr<SGExpression<T> > inputExpressions[2] = {
|
|
SGReadFExpression<T>(inputRoot, expression->getChild(0)),
|
|
SGReadFExpression<T>(inputRoot, expression->getChild(1))
|
|
};
|
|
if (!inputExpressions[0] || !inputExpressions[1]) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
return new SGAtan2Expression<T>(inputExpressions[0], inputExpressions[1]);
|
|
}
|
|
if (name == "div") {
|
|
if (expression->nChildren() != 2) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
SGSharedPtr<SGExpression<T> > inputExpressions[2] = {
|
|
SGReadFExpression<T>(inputRoot, expression->getChild(0)),
|
|
SGReadFExpression<T>(inputRoot, expression->getChild(1))
|
|
};
|
|
if (!inputExpressions[0] || !inputExpressions[1]) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
return new SGDivExpression<T>(inputExpressions[0], inputExpressions[1]);
|
|
}
|
|
if (name == "mod") {
|
|
if (expression->nChildren() != 2) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
SGSharedPtr<SGExpression<T> > inputExpressions[2] = {
|
|
SGReadFExpression<T>(inputRoot, expression->getChild(0)),
|
|
SGReadFExpression<T>(inputRoot, expression->getChild(1))
|
|
};
|
|
if (!inputExpressions[0] || !inputExpressions[1]) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
return new SGModExpression<T>(inputExpressions[0], inputExpressions[1]);
|
|
}
|
|
if (name == "pow") {
|
|
if (expression->nChildren() != 2) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
SGSharedPtr<SGExpression<T> > inputExpressions[2] = {
|
|
SGReadIExpression<T>(inputRoot, expression->getChild(0)),
|
|
SGReadIExpression<T>(inputRoot, expression->getChild(1))
|
|
};
|
|
if (!inputExpressions[0] || !inputExpressions[1]) {
|
|
SG_LOG(SG_IO, SG_ALERT, "Cannot read \"" << name << "\" expression.");
|
|
return 0;
|
|
}
|
|
return new SGPowExpression<T>(inputExpressions[0], inputExpressions[1]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
SGExpression<int>*
|
|
SGReadIntExpression(SGPropertyNode *inputRoot,
|
|
const SGPropertyNode *configNode)
|
|
{ return SGReadIExpression<int>(inputRoot, configNode); }
|
|
|
|
SGExpression<float>*
|
|
SGReadFloatExpression(SGPropertyNode *inputRoot,
|
|
const SGPropertyNode *configNode)
|
|
{ return SGReadFExpression<float>(inputRoot, configNode); }
|
|
|
|
SGExpression<double>*
|
|
SGReadDoubleExpression(SGPropertyNode *inputRoot,
|
|
const SGPropertyNode *configNode)
|
|
{ return SGReadFExpression<double>(inputRoot, configNode); }
|
|
|
|
// SGExpression<bool>*
|
|
// SGReadBoolExpression(SGPropertyNode *inputRoot,
|
|
// const SGPropertyNode *configNode)
|
|
// { return SGReadBExpression<bool>(inputRoot, configNode); }
|