Source Code Cross Referenced for Edge.java in  » Code-Analyzer » javapathfinder » gov » nasa » ltl » graph » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Code Analyzer » javapathfinder » gov.nasa.ltl.graph 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        //
002:        // Copyright (C) 2005 United States Government as represented by the
003:        // Administrator of the National Aeronautics and Space Administration
004:        // (NASA).  All Rights Reserved.
005:        // 
006:        // This software is distributed under the NASA Open Source Agreement
007:        // (NOSA), version 1.3.  The NOSA has been approved by the Open Source
008:        // Initiative.  See the file NOSA-1.3-JPF at the top of the distribution
009:        // directory tree for the complete NOSA document.
010:        // 
011:        // THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
012:        // KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
013:        // LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
014:        // SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
015:        // A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
016:        // THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
017:        // DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
018:        //
019:        package gov.nasa.ltl.graph;
020:
021:        import java.io.PrintStream;
022:
023:        import java.util.StringTokenizer;
024:
025:        /**
026:         * DOCUMENT ME!
027:         */
028:        public class Edge {
029:            private Node source;
030:            private Node next;
031:            private String guard;
032:            private String action;
033:            private Attributes attributes;
034:
035:            public Edge(Node s, Node n, String g, String a, Attributes as) {
036:                init(s, n, g, a, as);
037:            }
038:
039:            public Edge(Node s, Node n, String g, String a) {
040:                init(s, n, g, a, null);
041:            }
042:
043:            public Edge(Node s, Node n, String g) {
044:                init(s, n, g, "-", null);
045:            }
046:
047:            public Edge(Node s, Node n) {
048:                init(s, n, "-", "-", null);
049:            }
050:
051:            public Edge(Node s, Edge e) {
052:                init(s, e.next, new String(e.guard), new String(e.action),
053:                        new Attributes(e.attributes));
054:            }
055:
056:            public Edge(Edge e, Node n) {
057:                init(e.source, n, new String(e.guard), new String(e.action),
058:                        new Attributes(e.attributes));
059:            }
060:
061:            public Edge(Edge e) {
062:                init(e.source, e.next, new String(e.guard),
063:                        new String(e.action), new Attributes(e.attributes));
064:            }
065:
066:            public String getAction() {
067:                return action;
068:            }
069:
070:            public synchronized void setAttributes(Attributes a) {
071:                attributes = new Attributes(a);
072:            }
073:
074:            public Attributes getAttributes() {
075:                return attributes;
076:            }
077:
078:            public void setBooleanAttribute(String name, boolean value) {
079:                attributes.setBoolean(name, value);
080:            }
081:
082:            public boolean getBooleanAttribute(String name) {
083:                return attributes.getBoolean(name);
084:            }
085:
086:            public String getGuard() {
087:                return guard;
088:            }
089:
090:            public void setIntAttribute(String name, int value) {
091:                attributes.setInt(name, value);
092:            }
093:
094:            public int getIntAttribute(String name) {
095:                return attributes.getInt(name);
096:            }
097:
098:            public Node getNext() {
099:                return next;
100:            }
101:
102:            public Node getSource() {
103:                return source;
104:            }
105:
106:            public void setStringAttribute(String name, String value) {
107:                attributes.setString(name, value);
108:            }
109:
110:            public String getStringAttribute(String name) {
111:                return attributes.getString(name);
112:            }
113:
114:            public synchronized void remove() {
115:                source.removeOutgoingEdge(this );
116:                next.removeIncomingEdge(this );
117:            }
118:
119:            // Modified by robbyjo - Jul 15, 2002
120:            void save(PrintStream out, int format) {
121:                switch (format) {
122:                case Graph.SM_FORMAT:
123:                    save_sm(out);
124:
125:                    break;
126:
127:                case Graph.FSP_FORMAT:
128:                    save_fsp(out);
129:
130:                    break;
131:
132:                case Graph.XML_FORMAT:
133:                    save_xml(out);
134:
135:                    break;
136:
137:                case Graph.SPIN_FORMAT:
138:                    save_spin(out);
139:
140:                    break;
141:
142:                default:
143:                    throw new RuntimeException("Unknown format!");
144:                }
145:            }
146:
147:            private void init(Node s, Node n, String g, String a, Attributes as) {
148:                source = s;
149:                next = n;
150:                guard = g;
151:                action = a;
152:
153:                if (as == null) {
154:                    attributes = new Attributes();
155:                } else {
156:                    attributes = as;
157:                }
158:
159:                s.addOutgoingEdge(this );
160:                n.addIncomingEdge(this );
161:            }
162:
163:            // Modified by ckong - Sept 7, 2001
164:            private void save_fsp(PrintStream out) {
165:                String g;
166:                String accs = "";
167:
168:                if (guard.equals("-")) {
169:                    g = "TRUE";
170:                } else {
171:                    g = guard;
172:                }
173:
174:                int nsets = source.getGraph().getIntAttribute("nsets");
175:
176:                if (nsets == 0) {
177:                    if (getBooleanAttribute("accepting")) {
178:                        accs = "@";
179:                    }
180:                } else {
181:                    boolean first = true;
182:                    StringBuffer sb = new StringBuffer();
183:
184:                    for (int i = 0; i < nsets; i++) {
185:                        if (getBooleanAttribute("acc" + i)) {
186:                            if (first) {
187:                                first = false;
188:                            } else {
189:                                sb.append(",");
190:                            }
191:
192:                            sb.append(i);
193:                        }
194:                    }
195:
196:                    if (!first) {
197:                        accs = "{" + sb.toString() + "}";
198:                    }
199:                }
200:
201:                //System.out.print(g + " -" + accs + "-> S" + next.getId());
202:                out.print(g + accs + "-> S" + next.getId());
203:            }
204:
205:            private void save_sm(PrintStream out) {
206:                out.print("    ");
207:                out.println(next.getId());
208:                out.print("    ");
209:                out.println(guard);
210:                out.print("    ");
211:                out.println(action);
212:                out.print("    ");
213:                out.println(attributes);
214:            }
215:
216:            // robbyjo's contribution
217:            private void save_spin(PrintStream out) {
218:                String ln = System.getProperty("line.separator");
219:                String g = guard.equals("-") ? "1" : guard;
220:                String accs = "";
221:
222:                StringTokenizer tok = new StringTokenizer(new String(g), "&");
223:                g = "";
224:
225:                while (tok.hasMoreTokens()) {
226:                    g += tok.nextToken();
227:
228:                    if (tok.hasMoreTokens()) {
229:                        g += " && ";
230:                    }
231:                }
232:
233:                tok = new StringTokenizer(new String(g), "|");
234:                g = "";
235:
236:                while (tok.hasMoreTokens()) {
237:                    g += tok.nextToken();
238:
239:                    if (tok.hasMoreTokens()) {
240:                        g += " || ";
241:                    }
242:                }
243:
244:                int nsets = source.getGraph().getIntAttribute("nsets");
245:
246:                if (nsets == 0) {
247:                    if (getBooleanAttribute("accepting")) {
248:                        accs = "@";
249:                    }
250:                } else {
251:                    boolean first = true;
252:                    StringBuffer sb = new StringBuffer();
253:
254:                    for (int i = 0; i < nsets; i++) {
255:                        if (getBooleanAttribute("acc" + i)) {
256:                            if (first) {
257:                                first = false;
258:                            } else {
259:                                sb.append(",");
260:                            }
261:
262:                            sb.append(i);
263:                        }
264:                    }
265:
266:                    if (!first) {
267:                        accs = "{" + sb.toString() + "}";
268:                    }
269:                }
270:
271:                out.print("(" + g + ") " + accs + "-> goto ");
272:
273:                if (next.getBooleanAttribute("accepting")) {
274:                    out.print("accept_");
275:                }
276:
277:                out.print("S" + next.getId());
278:            }
279:
280:            private void save_xml(PrintStream out) {
281:                out.println("<transition to=\"" + next.getId() + "\">");
282:
283:                if (!guard.equals("-")) {
284:                    out.println("<guard>" + xml_quote(guard) + "</guard>");
285:                }
286:
287:                if (!action.equals("-")) {
288:                    out.println("<action>" + xml_quote(action) + "</action>");
289:                }
290:
291:                attributes.save(out, Graph.XML_FORMAT);
292:                out.println("</transition>");
293:            }
294:
295:            private String xml_quote(String s) {
296:                StringBuffer sb = new StringBuffer();
297:
298:                for (int i = 0; i < s.length(); i++) {
299:                    char ch = s.charAt(i);
300:
301:                    switch (ch) {
302:                    case '&':
303:                        sb.append("&amp;");
304:
305:                        break;
306:
307:                    case '<':
308:                        sb.append("&lt;");
309:
310:                        break;
311:
312:                    case '>':
313:                        sb.append("&gt;");
314:
315:                        break;
316:
317:                    default:
318:                        sb.append(ch);
319:
320:                        break;
321:                    }
322:                }
323:
324:                return sb.toString();
325:            }
326:        }
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