// Author: sbh
#include "ParametersPlugin_Parameter.h"
+#include <ParametersPlugin_PyInterp.h>
+
#include <ModelAPI_AttributeString.h>
+#include <ModelAPI_ResultParameter.h>
+#include <ModelAPI_AttributeDouble.h>
+#include <ModelAPI_AttributeRefList.h>
+#include <ModelAPI_Tools.h>
+#include <ModelAPI_Session.h>
+#include <ModelAPI_Validator.h>
+
+#include <string>
+#include <sstream>
ParametersPlugin_Parameter::ParametersPlugin_Parameter()
+{
+ myInterp = std::shared_ptr<ParametersPlugin_PyInterp>(new ParametersPlugin_PyInterp());
+ myInterp->initialize();
+}
+
+ParametersPlugin_Parameter::~ParametersPlugin_Parameter()
{
}
void ParametersPlugin_Parameter::initAttributes()
{
- data()->addAttribute(ParametersPlugin_Parameter::VARIABLE_ID(), ModelAPI_AttributeString::type());
- data()->addAttribute(ParametersPlugin_Parameter::EXPRESSION_ID(), ModelAPI_AttributeString::type());
+ data()->addAttribute(VARIABLE_ID(), ModelAPI_AttributeString::typeId());
+ data()->addAttribute(EXPRESSION_ID(), ModelAPI_AttributeString::typeId());
+ data()->addAttribute(ARGUMENTS_ID(), ModelAPI_AttributeRefList::typeId());
+ ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), ARGUMENTS_ID());
+}
+
+bool ParametersPlugin_Parameter::isInHistory()
+{
+ return false;
+}
+
+void ParametersPlugin_Parameter::attributeChanged(const std::string& theID)
+{
+ if (theID == EXPRESSION_ID()) { // recompute only on change of the expression
+ ResultParameterPtr aParam = document()->createParameter(data());
+
+ std::string anExpression = string(EXPRESSION_ID())->value();
+ if(anExpression.empty()) {
+ // clear error/result if the expression is empty
+ setError("", false);
+ return;
+ }
+ std::string outErrorMessage;
+ double aValue = evaluate(anExpression, outErrorMessage);
+ // Name
+ std::string aName = string(VARIABLE_ID())->value();
+ std::ostringstream sstream;
+ sstream << aValue;
+ std::string aParamValue = sstream.str();
+ data()->setName(aName);
+ aParam->data()->setName(aName);
+ // Error
+ if (!outErrorMessage.empty()) {
+ std::string aStateMsg("Error: " + outErrorMessage);
+ data()->execState(ModelAPI_StateExecFailed);
+ setError(aStateMsg, false);
+ } else {
+ static const std::string anEmptyMsg(""); // it is checked in the validator by the empty message
+ setError(anEmptyMsg, false);
+ data()->execState(ModelAPI_StateDone);
+ }
+ // Value
+ AttributeDoublePtr aValueAttribute = aParam->data()->real(ModelAPI_ResultParameter::VALUE());
+ aValueAttribute->setValue(aValue);
+ setResult(aParam);
+ }
}
void ParametersPlugin_Parameter::execute()
{
+ // just call recompute
+ attributeChanged(EXPRESSION_ID());
+}
+
+double ParametersPlugin_Parameter::evaluate(const std::string& theExpression, std::string& theError)
+{
+
+ std::list<std::string> anExprParams = myInterp->compile(theExpression);
+ // find expression's params in the model
+ std::list<std::string> aContext;
+ std::list<std::string>::iterator it = anExprParams.begin();
+ std::list<ResultParameterPtr> aParamsList;
+ for ( ; it != anExprParams.end(); it++) {
+ double aValue;
+ ResultParameterPtr aParamRes;
+ if (!ModelAPI_Tools::findVariable(*it, aValue, aParamRes)) continue;
+ aParamsList.push_back(aParamRes);
+
+ std::ostringstream sstream;
+ sstream << aValue;
+ std::string aParamValue = sstream.str();
+ aContext.push_back(*it + "=" + aParamValue);
+ }
+ // compare the list of parameters to store if changed
+ AttributeRefListPtr aParams = reflist(ARGUMENTS_ID());
+ bool aDifferent = aParams->size() != aParamsList.size();
+ if (!aDifferent) {
+ std::list<ResultParameterPtr>::iterator aNewIter = aParamsList.begin();
+ std::list<ObjectPtr> anOldList = aParams->list();
+ std::list<ObjectPtr>::iterator anOldIter = anOldList.begin();
+ for(; !aDifferent && aNewIter != aParamsList.end(); aNewIter++, anOldIter++) {
+ if (*aNewIter != *anOldIter)
+ aDifferent = true;
+ }
+ }
+ if (aDifferent) {
+ aParams->clear();
+ std::list<ResultParameterPtr>::iterator aNewIter = aParamsList.begin();
+ for(; aNewIter != aParamsList.end(); aNewIter++) {
+ aParams->append(*aNewIter);
+ }
+ }
+
+ myInterp->extendLocalContext(aContext);
+ double result = myInterp->evaluate(theExpression, theError);
+ myInterp->clearLocalContext();
+ return result;
+}
+
+bool ParametersPlugin_Parameter::isPreviewNeeded() const
+{
+ return false;
}
