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69 lines
4.5 KiB
69 lines
4.5 KiB
#include "src/utility/prism.h"
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#include "src/storage/expressions/ExpressionManager.h"
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#include "src/storage/prism/Program.h"
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#include "src/exceptions/InvalidArgumentException.h"
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#include "macros.h"
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namespace storm {
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namespace utility {
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namespace prism {
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std::map<storm::expressions::Variable, storm::expressions::Expression> parseConstantDefinitionString(storm::prism::Program const& program, std::string const& constantDefinitionString) {
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std::map<storm::expressions::Variable, storm::expressions::Expression> constantDefinitions;
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std::set<storm::expressions::Variable> definedConstants;
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if (!constantDefinitionString.empty()) {
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// Parse the string that defines the undefined constants of the model and make sure that it contains exactly
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// one value for each undefined constant of the model.
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std::vector<std::string> definitions;
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boost::split(definitions, constantDefinitionString, boost::is_any_of(","));
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for (auto& definition : definitions) {
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boost::trim(definition);
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// Check whether the token could be a legal constant definition.
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uint_fast64_t positionOfAssignmentOperator = definition.find('=');
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if (positionOfAssignmentOperator == std::string::npos) {
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throw storm::exceptions::InvalidArgumentException() << "Illegal constant definition string: syntax error.";
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}
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// Now extract the variable name and the value from the string.
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std::string constantName = definition.substr(0, positionOfAssignmentOperator);
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boost::trim(constantName);
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std::string value = definition.substr(positionOfAssignmentOperator + 1);
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boost::trim(value);
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// Check whether the constant is a legal undefined constant of the program and if so, of what type it is.
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if (program.hasConstant(constantName)) {
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// Get the actual constant and check whether it's in fact undefined.
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auto const& constant = program.getConstant(constantName);
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storm::expressions::Variable variable = constant.getExpressionVariable();
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STORM_LOG_THROW(!constant.isDefined(), storm::exceptions::InvalidArgumentException, "Illegally trying to define already defined constant '" << constantName <<"'.");
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STORM_LOG_THROW(definedConstants.find(variable) == definedConstants.end(), storm::exceptions::InvalidArgumentException, "Illegally trying to define constant '" << constantName <<"' twice.");
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definedConstants.insert(variable);
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if (constant.getType().isBooleanType()) {
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if (value == "true") {
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constantDefinitions[variable] = program.getManager().boolean(true);
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} else if (value == "false") {
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constantDefinitions[variable] = program.getManager().boolean(false);
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} else {
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throw storm::exceptions::InvalidArgumentException() << "Illegal value for boolean constant: " << value << ".";
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}
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} else if (constant.getType().isIntegerType()) {
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int_fast64_t integerValue = std::stoi(value);
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constantDefinitions[variable] = program.getManager().integer(integerValue);
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} else if (constant.getType().isRationalType()) {
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double doubleValue = std::stod(value);
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constantDefinitions[variable] = program.getManager().rational(doubleValue);
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}
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} else {
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STORM_LOG_THROW(false, storm::exceptions::InvalidArgumentException, "Illegal constant definition string: unknown undefined constant " << constantName << ".");
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}
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}
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}
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return constantDefinitions;
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}
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}
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}
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}
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