1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
3 // File: ParametersPlugin_Parameter.cpp
4 // Created: 23 MArch 2015
9 #include "ParametersPlugin_Parameter.h"
10 #include <ParametersPlugin_PyInterp.h>
12 #include <ModelAPI_AttributeString.h>
13 #include <ModelAPI_ResultParameter.h>
14 #include <ModelAPI_AttributeDouble.h>
15 #include <ModelAPI_AttributeRefList.h>
16 #include <ModelAPI_Tools.h>
17 #include <ModelAPI_Session.h>
18 #include <ModelAPI_Validator.h>
23 ParametersPlugin_Parameter::ParametersPlugin_Parameter()
25 myInterp = std::shared_ptr<ParametersPlugin_PyInterp>(new ParametersPlugin_PyInterp());
26 myInterp->initialize();
29 ParametersPlugin_Parameter::~ParametersPlugin_Parameter()
33 void ParametersPlugin_Parameter::initAttributes()
35 data()->addAttribute(VARIABLE_ID(), ModelAPI_AttributeString::typeId());
36 data()->addAttribute(EXPRESSION_ID(), ModelAPI_AttributeString::typeId());
37 data()->addAttribute(ARGUMENTS_ID(), ModelAPI_AttributeRefList::typeId());
38 ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), ARGUMENTS_ID());
41 bool ParametersPlugin_Parameter::isInHistory()
46 void ParametersPlugin_Parameter::attributeChanged(const std::string& theID)
48 if (theID == EXPRESSION_ID()) { // recompute only on change of the expression
49 ResultParameterPtr aParam = document()->createParameter(data());
51 std::string anExpression = string(EXPRESSION_ID())->value();
52 if(anExpression.empty()) {
53 // clear error/result if the expression is empty
57 std::string outErrorMessage;
58 double aValue = evaluate(anExpression, outErrorMessage);
60 std::string aName = string(VARIABLE_ID())->value();
61 std::ostringstream sstream;
63 std::string aParamValue = sstream.str();
64 data()->setName(aName);
65 aParam->data()->setName(aName);
67 if (!outErrorMessage.empty()) {
68 std::string aStateMsg("Error: " + outErrorMessage);
69 data()->execState(ModelAPI_StateExecFailed);
70 setError(aStateMsg, false);
72 static const std::string anEmptyMsg(""); // it is checked in the validator by the empty message
73 setError(anEmptyMsg, false);
74 data()->execState(ModelAPI_StateDone);
77 AttributeDoublePtr aValueAttribute = aParam->data()->real(ModelAPI_ResultParameter::VALUE());
78 aValueAttribute->setValue(aValue);
83 void ParametersPlugin_Parameter::execute()
85 // just call recompute
86 attributeChanged(EXPRESSION_ID());
89 double ParametersPlugin_Parameter::evaluate(const std::string& theExpression, std::string& theError)
92 std::list<std::string> anExprParams = myInterp->compile(theExpression);
93 // find expression's params in the model
94 std::list<std::string> aContext;
95 std::list<std::string>::iterator it = anExprParams.begin();
96 std::list<ResultParameterPtr> aParamsList;
97 for ( ; it != anExprParams.end(); it++) {
99 ResultParameterPtr aParamRes;
100 if (!ModelAPI_Tools::findVariable(*it, aValue, aParamRes)) continue;
101 aParamsList.push_back(aParamRes);
103 std::ostringstream sstream;
105 std::string aParamValue = sstream.str();
106 aContext.push_back(*it + "=" + aParamValue);
108 // compare the list of parameters to store if changed
109 AttributeRefListPtr aParams = reflist(ARGUMENTS_ID());
110 bool aDifferent = aParams->size() != aParamsList.size();
112 std::list<ResultParameterPtr>::iterator aNewIter = aParamsList.begin();
113 std::list<ObjectPtr> anOldList = aParams->list();
114 std::list<ObjectPtr>::iterator anOldIter = anOldList.begin();
115 for(; !aDifferent && aNewIter != aParamsList.end(); aNewIter++, anOldIter++) {
116 if (*aNewIter != *anOldIter)
122 std::list<ResultParameterPtr>::iterator aNewIter = aParamsList.begin();
123 for(; aNewIter != aParamsList.end(); aNewIter++) {
124 aParams->append(*aNewIter);
128 myInterp->extendLocalContext(aContext);
129 double result = myInterp->evaluate(theExpression, theError);
130 myInterp->clearLocalContext();
134 bool ParametersPlugin_Parameter::isPreviewNeeded() const