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261 lines
8.0 KiB
261 lines
8.0 KiB
//==============================================================================
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//
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// Copyright (c) 2002-
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// Authors:
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// * Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford)
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// * Christian von Essen <christian.vonessen@imag.fr> (Verimag, Grenoble)
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//
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//------------------------------------------------------------------------------
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//
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// This file is part of PRISM.
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//
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// PRISM is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// PRISM is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with PRISM; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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//==============================================================================
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package explicit;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.util.BitSet;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.TreeMap;
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import prism.ModelType;
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import prism.PrismException;
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import prism.PrismLog;
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import prism.PrismUtils;
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import strat.MDStrategy;
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import explicit.graphviz.Decorator;
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/**
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* Base class for explicit-state representations of an MDP.
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*/
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public abstract class MDPExplicit extends ModelExplicit implements MDP
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{
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// Accessors (for Model)
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@Override
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public ModelType getModelType()
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{
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return ModelType.MDP;
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}
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@Override
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public String infoString()
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{
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String s = "";
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s += numStates + " states (" + getNumInitialStates() + " initial)";
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s += ", " + getNumTransitions() + " transitions";
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s += ", " + getNumChoices() + " choices";
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s += ", dist max/avg = " + getMaxNumChoices() + "/" + PrismUtils.formatDouble2dp(((double) getNumChoices()) / numStates);
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return s;
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}
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@Override
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public String infoStringTable()
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{
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String s = "";
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s += "States: " + numStates + " (" + getNumInitialStates() + " initial)\n";
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s += "Transitions: " + getNumTransitions() + "\n";
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s += "Choices: " + getNumChoices() + "\n";
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s += "Max/avg: " + getMaxNumChoices() + "/" + PrismUtils.formatDouble2dp(((double) getNumChoices()) / numStates) + "\n";
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return s;
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}
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@Override
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public void exportToPrismExplicitTra(PrismLog out)
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{
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int i, j, numChoices;
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Object action;
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TreeMap<Integer, Double> sorted;
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// Output transitions to .tra file
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out.print(numStates + " " + getNumChoices() + " " + getNumTransitions() + "\n");
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sorted = new TreeMap<Integer, Double>();
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for (i = 0; i < numStates; i++) {
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numChoices = getNumChoices(i);
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for (j = 0; j < numChoices; j++) {
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// Extract transitions and sort by destination state index (to match PRISM-exported files)
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Iterator<Map.Entry<Integer, Double>> iter = getTransitionsIterator(i, j);
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while (iter.hasNext()) {
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Map.Entry<Integer, Double> e = iter.next();
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sorted.put(e.getKey(), e.getValue());
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}
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// Print out (sorted) transitions
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for (Map.Entry<Integer, Double> e : sorted.entrySet()) {
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// Note use of PrismUtils.formatDouble to match PRISM-exported files
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out.print(i + " " + j + " " + e.getKey() + " " + PrismUtils.formatDouble(e.getValue()));
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action = getAction(i, j);
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out.print(action == null ? "\n" : (" " + action + "\n"));
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}
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sorted.clear();
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}
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}
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}
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@Override
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public void exportTransitionsToDotFile(int i, PrismLog out, Iterable<explicit.graphviz.Decorator> decorators)
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{
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int j, numChoices;
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String nij;
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Object action;
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numChoices = getNumChoices(i);
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for (j = 0; j < numChoices; j++) {
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action = getAction(i, j);
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nij = "n" + i + "_" + j;
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out.print(i + " -> " + nij + " ");
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explicit.graphviz.Decoration d = new explicit.graphviz.Decoration();
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d.attributes().put("arrowhead", "none");
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d.setLabel(j + (action != null ? ":" + action : ""));
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if (decorators != null) {
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for (Decorator decorator : decorators) {
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d = decorator.decorateTransition(i, j, d);
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}
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}
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out.print(d);
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out.println(";");
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out.print(nij + " [ shape=point,width=0.1,height=0.1,label=\"\" ];\n");
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Iterator<Map.Entry<Integer, Double>> iter = getTransitionsIterator(i, j);
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while (iter.hasNext()) {
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Map.Entry<Integer, Double> e = iter.next();
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out.print(nij + " -> " + e.getKey() + " ");
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d = new explicit.graphviz.Decoration();
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d.setLabel(e.getValue().toString());
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if (decorators != null) {
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for (Decorator decorator : decorators) {
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d = decorator.decorateProbability(i, e.getKey(), j, e.getValue(), d);
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}
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}
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out.print(d);
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out.println(";");
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}
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}
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}
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@Override
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public void exportToDotFileWithStrat(PrismLog out, BitSet mark, int strat[])
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{
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int i, j, numChoices;
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String nij;
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Object action;
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String style;
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out.print("digraph " + getModelType() + " {\nnode [shape=box];\n");
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for (i = 0; i < numStates; i++) {
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if (mark != null && mark.get(i))
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out.print(i + " [style=filled fillcolor=\"#cccccc\"]\n");
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numChoices = getNumChoices(i);
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for (j = 0; j < numChoices; j++) {
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style = (strat[i] == j) ? ",color=\"#ff0000\",fontcolor=\"#ff0000\"" : "";
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action = getAction(i, j);
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nij = "n" + i + "_" + j;
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out.print(i + " -> " + nij + " [ arrowhead=none,label=\"" + j);
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if (action != null)
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out.print(":" + action);
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out.print("\"" + style + " ];\n");
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out.print(nij + " [ shape=point,height=0.1,label=\"\"" + style + " ];\n");
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Iterator<Map.Entry<Integer, Double>> iter = getTransitionsIterator(i, j);
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while (iter.hasNext()) {
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Map.Entry<Integer, Double> e = iter.next();
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out.print(nij + " -> " + e.getKey() + " [ label=\"" + e.getValue() + "\"" + style + " ];\n");
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}
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}
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}
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out.print("}\n");
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}
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@Override
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public void exportToPrismLanguage(String filename) throws PrismException
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{
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int i, j, numChoices;
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boolean first;
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FileWriter out;
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TreeMap<Integer, Double> sorted;
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Object action;
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try {
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// Output transitions to PRISM language file
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out = new FileWriter(filename);
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out.write(getModelType().keyword() + "\n");
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out.write("module M\nx : [0.." + (numStates - 1) + "];\n");
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sorted = new TreeMap<Integer, Double>();
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for (i = 0; i < numStates; i++) {
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numChoices = getNumChoices(i);
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for (j = 0; j < numChoices; j++) {
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// Extract transitions and sort by destination state index (to match PRISM-exported files)
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Iterator<Map.Entry<Integer, Double>> iter = getTransitionsIterator(i, j);
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while (iter.hasNext()) {
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Map.Entry<Integer, Double> e = iter.next();
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sorted.put(e.getKey(), e.getValue());
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}
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// Print out (sorted) transitions
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action = getAction(i, j);
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out.write(action != null ? ("[" + action + "]") : "[]");
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out.write("x=" + i + "->");
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first = true;
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for (Map.Entry<Integer, Double> e : sorted.entrySet()) {
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if (first)
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first = false;
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else
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out.write("+");
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// Note use of PrismUtils.formatDouble to match PRISM-exported files
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out.write(PrismUtils.formatDouble(e.getValue()) + ":(x'=" + e.getKey() + ")");
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}
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out.write(";\n");
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sorted.clear();
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}
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}
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out.write("endmodule\n");
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out.close();
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} catch (IOException e) {
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throw new PrismException("Could not export " + getModelType() + " to file \"" + filename + "\"" + e);
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}
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}
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// Accessors (for NondetModel)
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@Override
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public boolean areAllChoiceActionsUnique()
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{
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HashSet<Object> sActions = new HashSet<Object>();
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for (int s = 0; s < numStates; s++) {
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int n = getNumChoices(s);
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if (n > 1) {
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sActions.clear();
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for (int i = 0; i < n; i++) {
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if (!sActions.add(getAction(s, i))) {
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return false;
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}
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}
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}
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}
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return true;
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}
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// Accessors (for MDP)
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@Override
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public Model constructInducedModel(MDStrategy strat)
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{
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return new DTMCFromMDPAndMDStrategy(this, strat);
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}
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}
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