Extended Galileo parser to support parsing of Erlang distributions

src/storm-dft/parser/DFTGalileoParser.cpp

@@ -218,15 +218,23 @@ namespace storm {
                 STORM_LOG_THROW(distribution == Distribution::None, storm::exceptions::WrongFormatException, "A different distribution was already defined for this basic element.");
                 firstValDistribution = result.second;
                 distribution = Distribution::Constant;
-                STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Constant distribution is not supported.");
             }
             // Exponential distribution
             result = parseValue("lambda", line, valueParser);
             if (result.first) {
-                STORM_LOG_THROW(distribution == Distribution::None, storm::exceptions::WrongFormatException, "A different distribution was already defined for this basic element.");
+                STORM_LOG_THROW(distribution == Distribution::None || distribution == Distribution::Erlang, storm::exceptions::WrongFormatException, "A different distribution was already defined for this basic element.");
                 firstValDistribution = result.second;
+                if (distribution == Distribution::None) {
                     distribution = Distribution::Exponential;
                 }
+            }
+            // Erlang distribution
+            result = parseValue("phases", line, valueParser);
+            if (result.first) {
+                STORM_LOG_THROW(distribution == Distribution::None || distribution == Distribution::Exponential, storm::exceptions::WrongFormatException, "A different distribution was already defined for this basic element.");
+                secondValDistribution = result.second;
+                distribution = Distribution::Erlang;
+            }
             // Weibull distribution
             result = parseValue("rate", line, valueParser);
             if (result.first) {
@@ -263,10 +271,14 @@ namespace storm {
                 STORM_LOG_WARN("Restoration is not supported and will be ignored.");
             }
             std::pair<bool, unsigned> resultNum = parseNumber("repl", line);
-            if (result.first) {
+            if (resultNum.first) {
                 replication = resultNum.second;
                 STORM_LOG_THROW(replication == 1, storm::exceptions::NotSupportedException, "Replication > 1 is not supported.");
             }
+            result = parseValue("interval", line, valueParser);
+            if (result.first) {
+                STORM_LOG_WARN("Interval is not supported and will be ignored.");
+            }
             result = parseValue("dorm", line, valueParser);
             if (result.first) {
                 dormancyFactor = result.second;
@@ -283,8 +295,21 @@ namespace storm {
                 case Exponential:
                     return builder.addBasicElement(parseName(name), firstValDistribution, dormancyFactor, false); // TODO set transient BEs
                     break;
+                case Erlang:
+                    if (storm::utility::isOne<ValueType>(secondValDistribution)) {
+                        // Erlang distribution reduces to exponential distribution
+                        return builder.addBasicElement(parseName(name), firstValDistribution, dormancyFactor, false); // TODO set transient BEs
+                    } else {
+                        STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Erlang distribution is not supported.");
+                    }
+                    break;
                 case Weibull:
+                    if (storm::utility::isOne<ValueType>(secondValDistribution)) {
+                        // Weibull distribution reduces to exponential distribution
+                        return builder.addBasicElement(parseName(name), firstValDistribution, dormancyFactor, false); // TODO set transient BEs
+                    } else {
                         STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "Weibull distribution is not supported.");
+                    }
                     break;
                 case LogNormal:
                     STORM_LOG_THROW(false, storm::exceptions::NotSupportedException, "LogNormal distribution is not supported.");

src/storm-dft/parser/DFTGalileoParser.h

@@ -75,7 +75,7 @@ namespace storm {
              */
             static std::pair<bool, unsigned> parseNumber(std::string name, std::string& line);
 
-            enum Distribution { None, Constant, Exponential, Weibull, LogNormal };
+            enum Distribution { None, Constant, Exponential, Erlang, Weibull, LogNormal };
         };
     }
 }