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77 lines
3.1 KiB
77 lines
3.1 KiB
/*!
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* SparseStateRewardParser.cpp
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*
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* Created on: 23.12.2012
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* Author: Christian Dehnert
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*/
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#include <iostream>
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#include "src/parser/SparseStateRewardParser.h"
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#include "src/exceptions/WrongFormatException.h"
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#include "src/exceptions/OutOfRangeException.h"
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#include "src/exceptions/FileIoException.h"
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#include "src/utility/cstring.h"
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#include "src/parser/MappedFile.h"
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#include "log4cplus/logger.h"
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#include "log4cplus/loggingmacros.h"
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extern log4cplus::Logger logger;
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namespace storm {
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namespace parser {
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using namespace storm::utility::cstring;
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std::vector<double> SparseStateRewardParser::parseSparseStateReward(uint_fast64_t stateCount, std::string const & filename) {
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// Open file.
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if (!MappedFile::fileExistsAndIsReadable(filename.c_str())) {
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LOG4CPLUS_ERROR(logger, "Error while parsing " << filename << ": File does not exist or is not readable.");
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throw storm::exceptions::FileIoException() << "Error while parsing " << filename << ": File does not exist or is not readable.";
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}
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MappedFile file(filename.c_str());
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char const* buf = file.getData();
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// Create state reward vector with given state count.
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std::vector<double> stateRewards(stateCount);
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// Now parse state reward assignments.
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uint_fast64_t state = 0;
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uint_fast64_t lastState = (uint_fast64_t)-1;
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uint_fast64_t const startIndexComparison = lastState;
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double reward;
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// Iterate over states.
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while (buf[0] != '\0') {
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// Parse state number and reward value.
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state = checked_strtol(buf, &buf);
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// If the state has already been read or skipped once there might be a problem with the file (doubled lines, or blocks).
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// Note: The value -1 shows that lastState has not yet been set, i.e. this is the first run of the loop (state index (2^64)-1 is a really bad starting index).
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if (state <= lastState && lastState != startIndexComparison) {
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LOG4CPLUS_ERROR(logger, "Error while parsing " << filename << ": State " << state << " was found but has already been read or skipped previously.");
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throw storm::exceptions::WrongFormatException() << "Error while parsing " << filename << ": State " << state << " was found but has already been read or skipped previously.";
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}
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if(stateCount <= state) {
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LOG4CPLUS_ERROR(logger, "Error while parsing " << filename << ": Found reward for a state of an invalid index \"" << state << "\". The model has only " << stateCount << " states.");
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throw storm::exceptions::OutOfRangeException() << "Error while parsing " << filename << ": Found reward for a state of an invalid index \"" << state << "\"";
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}
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reward = checked_strtod(buf, &buf);
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if (reward < 0.0) {
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LOG4CPLUS_ERROR(logger, "Error while parsing " << filename << ": Expected positive reward value but got \"" << reward << "\".");
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throw storm::exceptions::WrongFormatException() << "Error while parsing " << filename << ": State reward file specifies illegal reward value.";
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}
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stateRewards[state] = reward;
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buf = trimWhitespaces(buf);
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lastState = state;
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}
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return stateRewards;
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}
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} // namespace parser
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} // namespace storm
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