73 lines
3.8 KiB
73 lines
3.8 KiB
#include "src/parser/SparseChoiceLabelingParser.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/parser/MappedFile.h"
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#include "src/utility/cstring.h"
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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<storm::models::sparse::LabelSet> SparseChoiceLabelingParser::parseChoiceLabeling(std::vector<uint_fast64_t> const& nondeterministicChoiceIndices, 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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uint_fast64_t totalNumberOfChoices = nondeterministicChoiceIndices.back();
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// Create choice labeling vector with given choice count.
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std::vector<storm::models::sparse::LabelSet> result(totalNumberOfChoices);
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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 lastChoice = (uint_fast64_t) - 1;
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uint_fast64_t const startIndexComparison = lastState;
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uint_fast64_t const startChoiceIndexComparison = lastChoice;
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uint_fast64_t choice = 0;
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uint_fast64_t label = 0;
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// Iterate over states.
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while (buf[0] != '\0') {
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// Parse state number and choice.
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state = checked_strtol(buf, &buf);
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choice = 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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STORM_LOG_THROW(false, 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 (state == lastState && choice < lastChoice && lastChoice != startChoiceIndexComparison) {
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STORM_LOG_THROW(false, storm::exceptions::WrongFormatException, "Error while parsing " << filename << ": Choice " << choice << " was found but has already been read or skipped previously.");
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}
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if (state >= nondeterministicChoiceIndices.size()) {
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STORM_LOG_THROW(false, storm::exceptions::WrongFormatException, "Error while parsing " << filename << ": Illegal state " << state << ".");
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}
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uint_fast64_t numberOfChoicesForState = nondeterministicChoiceIndices[state + 1] - nondeterministicChoiceIndices[state];
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if (choice >= numberOfChoicesForState) {
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STORM_LOG_THROW(false, storm::exceptions::WrongFormatException, "Error while parsing " << filename << ": Choice " << choice << " is illegal for state " << state << ", because this state has fewer choices.");
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}
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label = checked_strtol(buf, &buf);
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result[nondeterministicChoiceIndices[state] + choice].insert(label);
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buf = trimWhitespaces(buf);
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lastState = state;
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lastChoice = choice;
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}
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return result;
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}
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}
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}
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