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FMIModelDescription.c
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#include "FMIModelDescription.h"
#include <string.h>
#include <stdint.h>
#include <stdlib.h>
#include <libxml/parser.h>
#include <libxml/xmlschemas.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
#ifdef _WIN32
#include <Windows.h>
#endif
#include "structured_variable_name.tab.h"
// to regenerate run
//
// python xsdflatten.py fmi3ModelDescription.xsd > fmi3Merged.xsd
//
// and
//
// xxd -i fmi3Merged.xsd > fmi3schema.h
#include "fmi1schema.h"
#include "fmi2schema.h"
#include "fmi3schema.h"
#include "FMIUtil.h"
#define CALL(f) do { status = f; if (status > FMIOK) goto TERMINATE; } while (0)
static char* getStringAttribute(const xmlNodePtr node, const char* name) {
const char* attribute = (char*)xmlGetProp(node, (xmlChar*)name);
if (!attribute) {
return NULL;
}
char* value = NULL;
FMIDuplicateString(attribute, &value);
xmlFree((void*)attribute);
return value;
}
static bool getBooleanAttribute(const xmlNodePtr node, const char* name) {
char* literal = (char*)xmlGetProp(node, (xmlChar*)name);
bool value = literal && (strcmp(literal, "true") == 0 || strcmp(literal, "1") == 0);
xmlFree(literal);
return value;
}
static int getIntAttribute(const xmlNodePtr node, const char* name) {
char* literal = (char*)xmlGetProp(node, (xmlChar*)name);
if (!literal) {
return 0;
}
const int value = strtol(literal, NULL, 0);
xmlFree(literal);
return value;
}
static double getDoubleAttribute(const xmlNodePtr node, const char* name, double defaultValue) {
char* literal = (char*)xmlGetProp(node, (xmlChar*)name);
if (literal) {
const double value = strtod(literal, NULL);
xmlFree(literal);
return value;
}
return defaultValue;
}
static uint32_t getUInt32Attribute(const xmlNodePtr node, const char* name) {
char* literal = (char*)xmlGetProp(node, (xmlChar*)name);
uint32_t value = strtoul(literal, NULL, 0);
xmlFree(literal);
return value;
}
static FMIVariableNamingConvention getVariableNamingConvention(const xmlNodePtr node) {
const char* value = (char*)xmlGetProp(node, (xmlChar*)"variableNamingConvention");
FMIVariableNamingConvention variableNamingConvention = (value && !strcmp(value, "structured")) ? FMIStructured : FMIFlat;
xmlFree((void*)value);
return variableNamingConvention;
}
static FMIModelDescription* readModelDescriptionFMI1(xmlNodePtr root) {
FMIStatus status = FMIOK;
FMIModelDescription* modelDescription = NULL;
CALL(FMICalloc((void**)&modelDescription, 1, sizeof(FMIModelDescription)));
modelDescription->fmiMajorVersion = FMIMajorVersion1;
modelDescription->modelName = getStringAttribute(root, "modelName");
modelDescription->instantiationToken = getStringAttribute(root, "guid");
modelDescription->description = getStringAttribute(root, "description");
modelDescription->generationTool = getStringAttribute(root, "generationTool");
modelDescription->generationDateAndTime = getStringAttribute(root, "generationDateAndTime");
modelDescription->variableNamingConvention = getVariableNamingConvention(root);
const char* numberOfContinuousStates = (char*)xmlGetProp(root, (xmlChar*)"numberOfContinuousStates");
if (numberOfContinuousStates) {
modelDescription->nContinuousStates = atoi(numberOfContinuousStates);
xmlFree((void*)numberOfContinuousStates);
}
const char* numberOfEventIndicators = (char*)xmlGetProp(root, (xmlChar*)"numberOfEventIndicators");
if (numberOfEventIndicators) {
modelDescription->nEventIndicators = atoi(numberOfEventIndicators);
xmlFree((void*)numberOfEventIndicators);
}
xmlXPathContextPtr xpathCtx = xmlXPathNewContext(root->doc);
xmlXPathObjectPtr xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/Implementation/CoSimulation_StandAlone", xpathCtx);
if (xpathObj->nodesetval->nodeNr == 1) {
CALL(FMICalloc((void**)&modelDescription->coSimulation, 1, sizeof(FMICoSimulationInterface)));
modelDescription->coSimulation->modelIdentifier = getStringAttribute(root, "modelIdentifier");
} else {
CALL(FMICalloc((void**)&modelDescription->modelExchange, 1, sizeof(FMIModelExchangeInterface)));
modelDescription->modelExchange->modelIdentifier = getStringAttribute(root, "modelIdentifier");
}
xmlXPathFreeObject(xpathObj);
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/DefaultExperiment", xpathCtx);
if (xpathObj->nodesetval->nodeNr == 1) {
CALL(FMICalloc((void**)&modelDescription->defaultExperiment, 1, sizeof(FMIDefaultExperiment)));
const xmlNodePtr node = xpathObj->nodesetval->nodeTab[0];
modelDescription->defaultExperiment->startTime = getStringAttribute(node, "startTime");
modelDescription->defaultExperiment->stopTime = getStringAttribute(node, "stopTime");
modelDescription->defaultExperiment->tolerance = getStringAttribute(node, "tolerance");
}
xmlXPathFreeObject(xpathObj);
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/ModelVariables/ScalarVariable/*[self::Real or self::Integer or self::Enumeration or self::Boolean or self::String]", xpathCtx);
modelDescription->nModelVariables = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)&modelDescription->modelVariables, xpathObj->nodesetval->nodeNr, sizeof(FMIModelVariable*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
xmlNodePtr typeNode = xpathObj->nodesetval->nodeTab[i];
xmlNodePtr variableNode = typeNode->parent;
FMIModelVariable* variable;
CALL(FMICalloc((void**)&variable, 1, sizeof(FMIModelVariable)));
modelDescription->modelVariables[i] = variable;
variable->line = variableNode->line;
variable->name = getStringAttribute(variableNode, "name");
variable->description = getStringAttribute(variableNode, "description");
variable->min = getStringAttribute(typeNode, "min");
variable->max = getStringAttribute(typeNode, "max");
variable->nominal = getStringAttribute(typeNode, "nominal");
variable->start = getStringAttribute(typeNode, "start");
const char* typeName = (char*)typeNode->name;
const char* causality = (char*)xmlGetProp(variableNode, (xmlChar*)"causality");
if (!causality) {
// default
variable->causality = FMILocal;
} else if (!strcmp(causality, "input")) {
variable->causality = FMIInput;
} else if (!strcmp(causality, "output")) {
variable->causality = FMIOutput;
} else {
// "internal" or "none"
variable->causality = FMILocal;
}
xmlFree((void*)causality);
const bool fixed = getBooleanAttribute(typeNode, "fixed");
const char* variability = (char*)xmlGetProp(variableNode, (xmlChar*)"variability");
if (!variability) { // default
variable->variability = FMIContinuous;
} else if (!strcmp(variability, "constant")) {
variable->variability = FMIConstant;
} else if (!strcmp(variability, "parameter")) {
variable->causality = FMIParameter;
variable->variability = fixed ? FMIFixed : FMITunable;
} else if (!strcmp(variability, "discrete")) {
variable->variability = FMIDiscrete;
} else if (!strcmp(variability, "continuous")) {
variable->variability = FMIContinuous;
}
xmlFree((void*)variability);
if (!strcmp(typeName, "Real")) {
variable->type = FMIRealType;
} else if (!strcmp(typeName, "Integer") || !strcmp(typeName, "Enumeration")) {
variable->type = FMIIntegerType;
} else if (!strcmp(typeName, "Boolean")) {
variable->type = FMIBooleanType;
} else if (!strcmp(typeName, "String")) {
variable->type = FMIStringType;
} else {
continue;
}
variable->valueReference = getUInt32Attribute(variableNode, "valueReference");
}
size_t nProblems = 0;
// check variabilities
for (size_t i = 0; i < modelDescription->nModelVariables; i++) {
const FMIModelVariable* variable = modelDescription->modelVariables[i];
if (variable->type != FMIRealType && variable->variability == FMIContinuous) {
FMILogError("Variable \"%s\" is not of type Real but has variability = continuous.\n", variable->name);
nProblems++;
}
}
xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx);
TERMINATE:
if (status != FMIOK || nProblems > 0) {
FMIFreeModelDescription(modelDescription);
modelDescription = NULL;
}
return modelDescription;
}
static FMIStatus readUnknownsFMI2(xmlXPathContextPtr xpathCtx, FMIModelDescription* modelDescription, const char* path, size_t* nUnkonwns, FMIUnknown*** unknowns) {
FMIStatus status = FMIOK;
xmlXPathObjectPtr xpathObj = xmlXPathEvalExpression((xmlChar*)path, xpathCtx);
*nUnkonwns = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)unknowns, *nUnkonwns, sizeof(FMIUnknown*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
xmlNodePtr unknownNode = xpathObj->nodesetval->nodeTab[i];
FMIUnknown* unknown;
CALL(FMICalloc((void**)&unknown, 1, sizeof(FMIUnknown)));
(*unknowns)[i] = unknown;
const char* indexLiteral = (char*)xmlGetProp(unknownNode, (xmlChar*)"index");
unknown->modelVariable = FMIModelVariableForIndexLiteral(modelDescription, indexLiteral);
if (!unknown->modelVariable) {
FMILogError("Illegal variable index %s for unkonwn (line %hu).\n", indexLiteral, unknownNode->line);
xmlFree((void*)indexLiteral);
status = FMIError;
goto TERMINATE;
}
xmlFree((void*)indexLiteral);
const char* dependenciesLiteral = (char*)xmlGetProp(unknownNode, (xmlChar*)"dependencies");
if (dependenciesLiteral) {
unsigned int* dependencyIndices;
CALL(FMIParseValues(FMIMajorVersion2, FMIUInt32Type, dependenciesLiteral, &unknown->nDependencies, &dependencyIndices));
CALL(FMICalloc((void**)&unknown->dependencies, unknown->nDependencies, sizeof(FMIModelVariable*)));
for (size_t j = 0; j < unknown->nDependencies; j++) {
const unsigned int index = dependencyIndices[j];
if (index < 1 || index > modelDescription->nModelVariables) {
FMILogError("Dependency %zu of unknown (line %hu) has illegal index %u.\n", j + 1, unknownNode->line, index);
status = FMIError;
goto TERMINATE;
}
unknown->dependencies[j] = modelDescription->modelVariables[index - 1];
}
FMIFree((void**)&dependencyIndices);
xmlFree((void*)dependenciesLiteral);
}
}
xmlXPathFreeObject(xpathObj);
TERMINATE:
return status;
}
static FMIStatus readUnknownsFMI3(xmlXPathContextPtr xpathCtx, FMIModelDescription* modelDescription, const char* path, size_t* nUnkonwns, FMIUnknown*** unknowns) {
FMIStatus status = FMIOK;
xmlXPathObjectPtr xpathObj = xmlXPathEvalExpression((xmlChar*)path, xpathCtx);
*nUnkonwns = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)unknowns, *nUnkonwns, sizeof(FMIUnknown*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
xmlNodePtr unknownNode = xpathObj->nodesetval->nodeTab[i];
FMIUnknown* unknown;
CALL(FMICalloc((void**)&unknown, 1, sizeof(FMIUnknown)));
(*unknowns)[i] = unknown;
const FMIValueReference valueReference = getUInt32Attribute(unknownNode, "valueReference");
unknown->modelVariable = FMIModelVariableForValueReference(modelDescription, valueReference);
if (!unknown->modelVariable) {
FMILogError("Illegal value reference %u for unknown (line %hu).\n", valueReference, unknownNode->line);
status = FMIError;
goto TERMINATE;
}
const char* dependenciesLiteral = (char*)xmlGetProp(unknownNode, (xmlChar*)"dependencies");
if (dependenciesLiteral) {
unsigned int* dependencyValueReferences;
CALL(FMIParseValues(FMIMajorVersion3, FMIUInt32Type, dependenciesLiteral, &unknown->nDependencies, &dependencyValueReferences));
CALL(FMICalloc((void**)&unknown->dependencies, unknown->nDependencies, sizeof(FMIModelVariable*)));
for (size_t j = 0; j < unknown->nDependencies; j++) {
const FMIValueReference valueReference = dependencyValueReferences[j];
unknown->dependencies[j] = FMIModelVariableForValueReference(modelDescription, valueReference);
if (!unknown->dependencies[j]) {
FMILogError("Illegal value reference %zu for dependency %zu of unkonwn (line %hu).\n", valueReference, j + 1, unknownNode->line);
status = FMIError;
goto TERMINATE;
}
}
FMIFree((void**)&dependencyValueReferences);
xmlFree((void*)dependenciesLiteral);
}
}
xmlXPathFreeObject(xpathObj);
TERMINATE:
return status;
}
static FMIStatus readSourceFiles(xmlXPathContextPtr xpathCtx, const char* path, size_t* nSourceFiles, char*** sourceFiles) {
FMIStatus status = FMIOK;
xmlXPathObjectPtr xpathObj = xmlXPathEvalExpression((xmlChar*)path, xpathCtx);
if (xpathObj->nodesetval->nodeNr > 0) {
*nSourceFiles = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)sourceFiles, xpathObj->nodesetval->nodeNr, sizeof(char*)));
for (int i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
xmlNodePtr fileNode = xpathObj->nodesetval->nodeTab[i];
(*sourceFiles)[i] = getStringAttribute(fileNode, "name");
}
}
xmlXPathFreeObject(xpathObj);
TERMINATE:
return status;
}
static FMIModelDescription* readModelDescriptionFMI2(xmlNodePtr root) {
FMIStatus status = FMIOK;
size_t nProblems = 0;
FMIModelDescription* modelDescription = NULL;
CALL(FMICalloc((void**)&modelDescription, 1, sizeof(FMIModelDescription)));
modelDescription->fmiMajorVersion = FMIMajorVersion2;
modelDescription->modelName = getStringAttribute(root, "modelName");
modelDescription->instantiationToken = getStringAttribute(root, "guid");
modelDescription->description = getStringAttribute(root, "description");
modelDescription->generationTool = getStringAttribute(root, "generationTool");
modelDescription->generationDateAndTime = getStringAttribute(root, "generationDateAndTime");
modelDescription->variableNamingConvention = getVariableNamingConvention(root);
const char* numberOfEventIndicators = (char*)xmlGetProp(root, (xmlChar*)"numberOfEventIndicators");
if (numberOfEventIndicators) {
modelDescription->nEventIndicators = atoi(numberOfEventIndicators);
xmlFree((void*)numberOfEventIndicators);
}
xmlXPathContextPtr xpathCtx = xmlXPathNewContext(root->doc);
xmlXPathObjectPtr xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/ModelExchange", xpathCtx);
if (xpathObj->nodesetval->nodeNr == 1) {
CALL(FMICalloc((void**)&modelDescription->modelExchange, 1, sizeof(FMIModelExchangeInterface)));
const xmlNodePtr node = xpathObj->nodesetval->nodeTab[0];
modelDescription->modelExchange->modelIdentifier = getStringAttribute(node, "modelIdentifier");
modelDescription->modelExchange->providesDirectionalDerivatives = getBooleanAttribute(node, "providesDirectionalDerivative");
modelDescription->modelExchange->needsCompletedIntegratorStep = !getBooleanAttribute(node, "completedIntegratorStepNotNeeded");
CALL(readSourceFiles(xpathCtx, "/fmiModelDescription/ModelExchange/SourceFiles/File", &modelDescription->modelExchange->nSourceFiles, &modelDescription->modelExchange->sourceFiles));
}
xmlXPathFreeObject(xpathObj);
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/CoSimulation", xpathCtx);
if (xpathObj->nodesetval->nodeNr == 1) {
CALL(FMICalloc((void**)&modelDescription->coSimulation, 1, sizeof(FMICoSimulationInterface)));
const xmlNodePtr node = xpathObj->nodesetval->nodeTab[0];
modelDescription->coSimulation->modelIdentifier = getStringAttribute(node, "modelIdentifier");
modelDescription->coSimulation->canHandleVariableCommunicationStepSize = getBooleanAttribute(node, "canHandleVariableCommunicationStepSize");
CALL(readSourceFiles(xpathCtx, "/fmiModelDescription/CoSimulation/SourceFiles/File", &modelDescription->coSimulation->nSourceFiles, &modelDescription->coSimulation->sourceFiles));
}
xmlXPathFreeObject(xpathObj);
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/DefaultExperiment", xpathCtx);
if (xpathObj->nodesetval->nodeNr == 1) {
CALL(FMICalloc((void**)&modelDescription->defaultExperiment, 1, sizeof(FMIDefaultExperiment)));
const xmlNodePtr node = xpathObj->nodesetval->nodeTab[0];
modelDescription->defaultExperiment->startTime = getStringAttribute(node, "startTime");
modelDescription->defaultExperiment->stopTime = getStringAttribute(node, "stopTime");
modelDescription->defaultExperiment->tolerance = getStringAttribute(node, "tolerance");
modelDescription->defaultExperiment->stepSize = getStringAttribute(node, "stepSize");
}
xmlXPathFreeObject(xpathObj);
// unit definitions
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/UnitDefinitions/Unit", xpathCtx);
modelDescription->nUnits = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)&modelDescription->units, xpathObj->nodesetval->nodeNr, sizeof(FMIUnit*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
FMIUnit* unit = NULL;
CALL(FMICalloc((void**)&unit, 1, sizeof(FMIUnit)));
modelDescription->units[i] = unit;
xmlNodePtr unitNode = xpathObj->nodesetval->nodeTab[i];
xmlNodePtr childNode = unitNode->children;
while (childNode) {
if (childNode->name && !strcmp(childNode->name, "BaseUnit")) {
FMIBaseUnit* baseUnit = NULL;
CALL(FMICalloc((void**)&baseUnit, 1, sizeof(FMIBaseUnit)));
baseUnit->kg = getIntAttribute(childNode, "kg");
baseUnit->m = getIntAttribute(childNode, "m");
baseUnit->s = getIntAttribute(childNode, "s");
baseUnit->A = getIntAttribute(childNode, "A");
baseUnit->K = getIntAttribute(childNode, "K");
baseUnit->mol = getIntAttribute(childNode, "mol");
baseUnit->cd = getIntAttribute(childNode, "cd");
baseUnit->rad = getIntAttribute(childNode, "rad");
baseUnit->factor = getDoubleAttribute(childNode, "factor", 1.0);
baseUnit->offset = getDoubleAttribute(childNode, "offset", 0.0);
unit->baseUnit = baseUnit;
} else if (childNode->name && !strcmp(childNode->name, "DisplayUnit")) {
CALL(FMIRealloc((void**)&unit->displayUnits, (unit->nDisplayUnits + 1) * sizeof(FMIDisplayUnit*)));
FMIDisplayUnit* displayUnit = NULL;
CALL(FMICalloc((void**)&displayUnit, 1, sizeof(FMIDisplayUnit)));
displayUnit->name = getStringAttribute(childNode, "name");
displayUnit->factor = getDoubleAttribute(childNode, "factor", 1.0);
displayUnit->offset = getDoubleAttribute(childNode, "offset", 0.0);
unit->displayUnits[unit->nDisplayUnits] = displayUnit;
unit->nDisplayUnits++;
}
childNode = childNode->next;
}
unit->name = getStringAttribute(unitNode, "name");
}
// type definitions
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/TypeDefinitions/SimpleType/*[self::Real or self::Integer or self::Enumeration or self::Boolean or self::String]", xpathCtx);
if (xpathObj->nodesetval) {
modelDescription->nTypeDefinitions = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)&modelDescription->typeDefinitions, xpathObj->nodesetval->nodeNr, sizeof(FMITypeDefinition*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
const xmlNodePtr typeNode = xpathObj->nodesetval->nodeTab[i];
const xmlNodePtr simpleTypeNode = typeNode->parent;
FMITypeDefinition* typeDefinition = NULL;
CALL(FMICalloc((void**)&typeDefinition, 1, sizeof(FMITypeDefinition)));
modelDescription->typeDefinitions[i] = typeDefinition;
typeDefinition->name = getStringAttribute(simpleTypeNode, "name");
typeDefinition->quantity = getStringAttribute(typeNode, "quantity");
const char* unit = (char*)xmlGetProp(typeNode, (xmlChar*)"unit");
if (unit) {
typeDefinition->unit = FMIUnitForName(modelDescription, unit);
if (!typeDefinition->unit) {
FMILogError("Unit \"%s\" of type defintion \"%s\" (line %hu) is not defined.", unit, typeDefinition->name, typeNode->line);
nProblems++;
}
xmlFree((void*)unit);
}
const char* displayUnit = (char*)xmlGetProp(typeNode, (xmlChar*)"displayUnit");
if (displayUnit) {
typeDefinition->displayUnit = FMIDisplayUnitForName(typeDefinition->unit, displayUnit);
if (!typeDefinition->displayUnit) {
FMILogError("Display unit \"%s\" of type defintion \"%s\" (line %hu) is not defined.", displayUnit, typeDefinition->name, typeNode->line);
nProblems++;
}
xmlFree((void*)displayUnit);
}
typeDefinition->relativeQuantity = getBooleanAttribute(typeNode, "relativeQuantity");
typeDefinition->min = getStringAttribute(typeNode, "min");
typeDefinition->max = getStringAttribute(typeNode, "max");
typeDefinition->nominal = getStringAttribute(typeNode, "nominal");
typeDefinition->unbounded = getBooleanAttribute(typeNode, "unbounded");
// TODO: variable type
}
}
// model variables
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/ModelVariables/ScalarVariable/*[self::Real or self::Integer or self::Enumeration or self::Boolean or self::String]", xpathCtx);
modelDescription->nModelVariables = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)&modelDescription->modelVariables, modelDescription->nModelVariables, sizeof(FMIModelVariable*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
const xmlNodePtr typeNode = xpathObj->nodesetval->nodeTab[i];
const xmlNodePtr variableNode = typeNode->parent;
FMIModelVariable* variable;
CALL(FMICalloc((void**)&variable, 1, sizeof(FMIModelVariable)));
modelDescription->modelVariables[i] = variable;
variable->name = getStringAttribute(variableNode, "name");
variable->description = getStringAttribute(variableNode, "description");
variable->min = getStringAttribute(typeNode, "min");
variable->max = getStringAttribute(typeNode, "max");
variable->nominal = getStringAttribute(typeNode, "nominal");
variable->start = getStringAttribute(typeNode, "start");
variable->line = variableNode->line;
variable->derivative = (FMIModelVariable*)xmlGetProp(typeNode, (xmlChar*)"derivative");
const char* unit = (char*)xmlGetProp(typeNode, (xmlChar*)"unit");
if (unit) {
variable->unit = FMIUnitForName(modelDescription, unit);
if (!variable->unit) {
FMILogError("Unit \"%s\" of model variable \"%s\" (line %hu) is not defined.", unit, variable->name, variable->line);
nProblems++;
}
xmlFree((void*)unit);
}
const char* declaredType = (char*)xmlGetProp(typeNode, (xmlChar*)"declaredType");
if (declaredType) {
variable->declaredType = FMITypeDefintionForName(modelDescription, declaredType);
if (!variable->declaredType) {
FMILogError("Declared type \"%s\" of model variable \"%s\" (line %hu) is not defined.", declaredType, variable->name, variable->line);
nProblems++;
}
xmlFree((void*)declaredType);
}
const char* typeName = (char*)typeNode->name;
const char* variability = (char*)xmlGetProp(variableNode, (xmlChar*)"variability");
if (!variability) {
variable->variability = FMIContinuous;
} else if(!strcmp(variability, "constant")) {
variable->variability = FMIConstant;
} else if (!strcmp(variability, "fixed")) {
variable->variability = FMIFixed;
} else if (!strcmp(variability, "tunable")) {
variable->variability = FMITunable;
} else if (!strcmp(variability, "discrete")) {
variable->variability = FMIDiscrete;
} else {
variable->variability = FMIContinuous;
}
xmlFree((void*)variability);
if (!strcmp(typeName, "Real")) {
variable->type = FMIRealType;
} else if (!strcmp(typeName, "Integer") || !strcmp(typeName, "Enumeration")) {
variable->type = FMIIntegerType;
} else if (!strcmp(typeName, "Boolean")) {
variable->type = FMIBooleanType;
} else if (!strcmp(typeName, "String")) {
variable->type = FMIStringType;
} else {
continue;
}
const char* vr = (char*)xmlGetProp(variableNode, (xmlChar*)"valueReference");
variable->valueReference = FMIValueReferenceForLiteral(vr);
xmlFree((void*)vr);
const char* causality = (char*)xmlGetProp(variableNode, (xmlChar*)"causality");
if (!causality) {
variable->causality = FMILocal;
} else if (!strcmp(causality, "parameter")) {
variable->causality = FMIParameter;
} else if (!strcmp(causality, "input")) {
variable->causality = FMIInput;
} else if (!strcmp(causality, "output")) {
variable->causality = FMIOutput;
} else if (!strcmp(causality, "independent")) {
variable->causality = FMIIndependent;
} else {
variable->causality = FMILocal;
}
xmlFree((void*)causality);
}
xmlXPathFreeObject(xpathObj);
CALL(readUnknownsFMI2(xpathCtx, modelDescription, "/fmiModelDescription/ModelStructure/Outputs/Unknown", &modelDescription->nOutputs, &modelDescription->outputs));
CALL(readUnknownsFMI2(xpathCtx, modelDescription, "/fmiModelDescription/ModelStructure/Derivatives/Unknown", &modelDescription->nContinuousStates, &modelDescription->derivatives));
CALL(readUnknownsFMI2(xpathCtx, modelDescription, "/fmiModelDescription/ModelStructure/InitialUnknowns/Unknown", &modelDescription->nInitialUnknowns, &modelDescription->initialUnknowns));
xmlXPathFreeContext(xpathCtx);
// resolve derivatives
for (size_t i = 0; i < modelDescription->nModelVariables; i++) {
FMIModelVariable* variable = modelDescription->modelVariables[i];
if (variable->derivative) {
char* literal = (char*)variable->derivative;
variable->derivative = FMIModelVariableForIndexLiteral(modelDescription, literal);
if (!variable->derivative) {
FMILogError("Failed to resolve attribute derivative=\"%s\" for model variable \"%s\".", literal, variable->name);
nProblems++;
}
xmlFree(literal);
}
}
// check variabilities
for (size_t i = 0; i < modelDescription->nModelVariables; i++) {
FMIModelVariable* variable = modelDescription->modelVariables[i];
if (variable->type != FMIRealType && variable->variability == FMIContinuous) {
FMILogError("Variable \"%s\" is not of type Real but has variability = continuous.\n", variable->name);
nProblems++;
}
}
nProblems += FMIValidateModelDescription(modelDescription);
TERMINATE:
if (status != FMIOK || nProblems > 0) {
FMIFreeModelDescription(modelDescription);
modelDescription = NULL;
}
return modelDescription;
}
static FMIModelDescription* readModelDescriptionFMI3(xmlNodePtr root) {
FMIStatus status = FMIOK;
size_t nProblems = 0;
FMIModelDescription* modelDescription = NULL;
CALL(FMICalloc((void**)&modelDescription, 1, sizeof(FMIModelDescription)));
modelDescription->fmiMajorVersion = FMIMajorVersion3;
modelDescription->modelName = getStringAttribute(root, "modelName");
modelDescription->instantiationToken = getStringAttribute(root, "instantiationToken");
modelDescription->description = getStringAttribute(root, "description");
modelDescription->generationTool = getStringAttribute(root, "generationTool");
modelDescription->generationDateAndTime = getStringAttribute(root, "generationDateAndTime");
modelDescription->variableNamingConvention = getVariableNamingConvention(root);
xmlXPathContextPtr xpathCtx = xmlXPathNewContext(root->doc);
xmlXPathObjectPtr xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/CoSimulation", xpathCtx);
if (xpathObj->nodesetval->nodeNr == 1) {
CALL(FMICalloc((void**)&modelDescription->coSimulation, 1, sizeof(FMICoSimulationInterface)));
const xmlNodePtr node = xpathObj->nodesetval->nodeTab[0];
modelDescription->coSimulation->modelIdentifier = getStringAttribute(node, "modelIdentifier");
modelDescription->coSimulation->canHandleVariableCommunicationStepSize = getBooleanAttribute(node, "canHandleVariableCommunicationStepSize");
modelDescription->coSimulation->hasEventMode = getBooleanAttribute(node, "hasEventMode");
}
xmlXPathFreeObject(xpathObj);
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/ModelExchange", xpathCtx);
if (xpathObj->nodesetval->nodeNr == 1) {
const xmlNodePtr node = xpathObj->nodesetval->nodeTab[0];
CALL(FMICalloc((void**)&modelDescription->modelExchange, 1, sizeof(FMIModelExchangeInterface)));
modelDescription->modelExchange->modelIdentifier = getStringAttribute(node, "modelIdentifier");
modelDescription->modelExchange->providesDirectionalDerivatives = getBooleanAttribute(node, "providesDirectionalDerivatives");
modelDescription->modelExchange->needsCompletedIntegratorStep = getBooleanAttribute(node, "needsCompletedIntegratorStep");
}
xmlXPathFreeObject(xpathObj);
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/DefaultExperiment", xpathCtx);
if (xpathObj->nodesetval->nodeNr == 1) {
CALL(FMICalloc((void**)&modelDescription->defaultExperiment, 1, sizeof(FMIDefaultExperiment)));
const xmlNodePtr node = xpathObj->nodesetval->nodeTab[0];
modelDescription->defaultExperiment->startTime = getStringAttribute(node, "startTime");
modelDescription->defaultExperiment->stopTime = getStringAttribute(node, "stopTime");
modelDescription->defaultExperiment->tolerance = getStringAttribute(node, "tolerance");
modelDescription->defaultExperiment->stepSize = getStringAttribute(node, "stepSize");
}
xmlXPathFreeObject(xpathObj);
// unit definitions
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/UnitDefinitions/Unit", xpathCtx);
modelDescription->nUnits = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)&modelDescription->units, xpathObj->nodesetval->nodeNr, sizeof(FMIUnit*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
FMIUnit* unit = NULL;
CALL(FMICalloc((void**)&unit, 1, sizeof(FMIUnit)));
modelDescription->units[i] = unit;
xmlNodePtr unitNode = xpathObj->nodesetval->nodeTab[i];
xmlNodePtr childNode = unitNode->children;
while (childNode) {
if (childNode->name && !strcmp((char*)childNode->name, "BaseUnit")) {
FMIBaseUnit* baseUnit = NULL;
CALL(FMICalloc((void**)&baseUnit, 1, sizeof(FMIBaseUnit)));
baseUnit->kg = getIntAttribute(childNode, "kg");
baseUnit->m = getIntAttribute(childNode, "m");
baseUnit->s = getIntAttribute(childNode, "s");
baseUnit->A = getIntAttribute(childNode, "A");
baseUnit->K = getIntAttribute(childNode, "K");
baseUnit->mol = getIntAttribute(childNode, "mol");
baseUnit->cd = getIntAttribute(childNode, "cd");
baseUnit->rad = getIntAttribute(childNode, "rad");
baseUnit->factor = getDoubleAttribute(childNode, "factor", 1.0);
baseUnit->offset = getDoubleAttribute(childNode, "offset", 0.0);
unit->baseUnit = baseUnit;
} else if (childNode->name && !strcmp((char*)childNode->name, "DisplayUnit")) {
CALL(FMIRealloc((void**)&unit->displayUnits, (unit->nDisplayUnits + 1) * sizeof(FMIDisplayUnit*)));
FMIDisplayUnit* displayUnit;
CALL(FMICalloc((void**)&displayUnit, 1, sizeof(FMIDisplayUnit)));
displayUnit->name = getStringAttribute(childNode, "name");
displayUnit->factor = getDoubleAttribute(childNode, "factor", 1.0);
displayUnit->offset = getDoubleAttribute(childNode, "offset", 0.0);
unit->displayUnits[unit->nDisplayUnits] = displayUnit;
unit->nDisplayUnits++;
}
childNode = childNode->next;
}
unit->name = getStringAttribute(unitNode, "name");
}
// type definitions
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/TypeDefinitions/"
"*[self::Float32Type"
" or self::Float64Type"
" or self::Int8Type"
" or self::UInt8Type"
" or self::Int16Type"
" or self::UInt16Type"
" or self::Int32Type"
" or self::UInt32Type"
" or self::Int64Type"
" or self::UInt64Type"
" or self::EnumerationType"
" or self::BooleanType"
" or self::StringType"
" or self::BinaryType"
" or self::ClockType]",
xpathCtx);
if (xpathObj->nodesetval) {
modelDescription->nTypeDefinitions = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)&modelDescription->typeDefinitions, xpathObj->nodesetval->nodeNr, sizeof(FMITypeDefinition*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
FMITypeDefinition* typeDefinition = NULL;
CALL(FMICalloc((void**)&typeDefinition, 1, sizeof(FMITypeDefinition)));
modelDescription->typeDefinitions[i] = typeDefinition;
xmlNodePtr typeDefinitionNode = xpathObj->nodesetval->nodeTab[i];
// TODO: type
typeDefinition->name = getStringAttribute(typeDefinitionNode, "name");
typeDefinition->quantity = getStringAttribute(typeDefinitionNode, "quantity");
const char* unit = (char*)xmlGetProp(typeDefinitionNode, (xmlChar*)"unit");
if (unit) {
typeDefinition->unit = FMIUnitForName(modelDescription, unit);
if (!typeDefinition->unit) {
FMILogError("Unit \"%s\" of type defintion \"%s\" (line %hu) is not defined.", unit, typeDefinition->name, typeDefinitionNode->line);
nProblems++;
}
xmlFree((void*)unit);
}
const char* displayUnit = (char*)xmlGetProp(typeDefinitionNode, (xmlChar*)"displayUnit");
if (displayUnit) {
typeDefinition->displayUnit = FMIDisplayUnitForName(typeDefinition->unit, displayUnit);
if (!typeDefinition->displayUnit) {
FMILogError("Display unit \"%s\" of type defintion \"%s\" (line %hu) is not defined.", displayUnit, typeDefinition->name, typeDefinitionNode->line);
nProblems++;
}
xmlFree((void*)displayUnit);
}
typeDefinition->relativeQuantity = getBooleanAttribute(typeDefinitionNode, "relativeQuantity");
typeDefinition->min = getStringAttribute(typeDefinitionNode, "min");
typeDefinition->max = getStringAttribute(typeDefinitionNode, "max");
typeDefinition->nominal = getStringAttribute(typeDefinitionNode, "nominal");
typeDefinition->unbounded = getBooleanAttribute(typeDefinitionNode, "unbounded");
}
}
// model variables
xpathObj = xmlXPathEvalExpression((xmlChar*)"/fmiModelDescription/ModelVariables/"
"*[self::Float32"
" or self::Float64"
" or self::Int8"
" or self::UInt8"
" or self::Int16"
" or self::UInt16"
" or self::Int32"
" or self::UInt32"
" or self::Int64"
" or self::UInt64"
" or self::Enumeration"
" or self::Boolean"
" or self::String"
" or self::Binary"
" or self::Clock]",
xpathCtx);
modelDescription->nModelVariables = xpathObj->nodesetval->nodeNr;
CALL(FMICalloc((void**)&modelDescription->modelVariables, xpathObj->nodesetval->nodeNr, sizeof(FMIModelVariable*)));
for (size_t i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
FMIModelVariable* variable;
CALL(FMICalloc((void**)&variable, 1, sizeof(FMIModelVariable)));
modelDescription->modelVariables[i] = variable;
xmlNodePtr variableNode = xpathObj->nodesetval->nodeTab[i];
variable->line = variableNode->line;
variable->name = getStringAttribute(variableNode, "name");
variable->min = getStringAttribute(variableNode, "min");
variable->max = getStringAttribute(variableNode, "max");
variable->nominal = getStringAttribute(variableNode, "nominal");
variable->start = getStringAttribute(variableNode, "start");
variable->description = getStringAttribute(variableNode, "description");
const char* unit = (char*)xmlGetProp(variableNode, (xmlChar*)"unit");
if (unit) {
variable->unit = FMIUnitForName(modelDescription, unit);
if (!variable->unit) {
FMILogError("Unit \"%s\" of model variable \"%s\" (line %hu) is not defined.", unit, variable->name, variable->line);
nProblems++;
}
xmlFree((void*)unit);
}
const char* declaredType = (char*)xmlGetProp(variableNode, (xmlChar*)"declaredType");
if (declaredType) {
variable->declaredType = FMITypeDefintionForName(modelDescription, declaredType);
if (!variable->declaredType) {
FMILogError("Declared type \"%s\" of model variable \"%s\" (line %hu) is not defined.", declaredType, variable->name, variable->line);
nProblems++;
}
xmlFree((void*)declaredType);
}
FMIVariableType type;
const char* name = (char*)variableNode->name;
const char* variability = (char*)xmlGetProp(variableNode, (xmlChar*)"variability");
if (!variability) {
variable->variability = -1; // infer from type
} else if (!strcmp(variability, "constant")) {
variable->variability = FMIConstant;
} else if (!strcmp(variability, "fixed")) {
variable->variability = FMIFixed;