Source Code Cross Referenced for ITNode.java in  » Testing » KeY » de » uka » ilkd » key » visualdebugger » executiontree » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » KeY » de.uka.ilkd.key.visualdebugger.executiontree 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // This file is part of KeY - Integrated Deductive Software Design
002:        // Copyright (C) 2001-2007 Universitaet Karlsruhe, Germany
003:        //                         Universitaet Koblenz-Landau, Germany
004:        //                         Chalmers University of Technology, Sweden
005:        //
006:        // The KeY system is protected by the GNU General Public License. 
007:        // See LICENSE.TXT for details.
008:        package de.uka.ilkd.key.visualdebugger.executiontree;
009:
010:        import java.util.HashMap;
011:        import java.util.HashSet;
012:        import java.util.Iterator;
013:        import java.util.LinkedList;
014:
015:        import de.uka.ilkd.key.java.Expression;
016:        import de.uka.ilkd.key.java.Services;
017:        import de.uka.ilkd.key.java.SourceElement;
018:        import de.uka.ilkd.key.java.abstraction.ClassType;
019:        import de.uka.ilkd.key.java.abstraction.KeYJavaType;
020:        import de.uka.ilkd.key.java.abstraction.PrimitiveType;
021:        import de.uka.ilkd.key.java.declaration.ArrayOfParameterDeclaration;
022:        import de.uka.ilkd.key.java.expression.Assignment;
023:        import de.uka.ilkd.key.java.expression.literal.IntLiteral;
024:        import de.uka.ilkd.key.java.expression.operator.CopyAssignment;
025:        import de.uka.ilkd.key.java.reference.ExecutionContext;
026:        import de.uka.ilkd.key.java.reference.MethodReference;
027:        import de.uka.ilkd.key.java.reference.ReferencePrefix;
028:        import de.uka.ilkd.key.java.reference.TypeRef;
029:        import de.uka.ilkd.key.java.statement.MethodBodyStatement;
030:        import de.uka.ilkd.key.java.statement.MethodFrame;
031:        import de.uka.ilkd.key.java.statement.Throw;
032:        import de.uka.ilkd.key.logic.*;
033:        import de.uka.ilkd.key.logic.op.*;
034:        import de.uka.ilkd.key.proof.Node;
035:        import de.uka.ilkd.key.proof.ProgVarReplacer;
036:        import de.uka.ilkd.key.rule.ListOfRuleSet;
037:        import de.uka.ilkd.key.rule.PosTacletApp;
038:        import de.uka.ilkd.key.rule.RuleSet;
039:        import de.uka.ilkd.key.rule.Taclet;
040:        import de.uka.ilkd.key.rule.inst.ContextInstantiationEntry;
041:        import de.uka.ilkd.key.visualdebugger.SourceElementId;
042:        import de.uka.ilkd.key.visualdebugger.VisualDebugger;
043:
044:        public class ITNode {
045:            private SourceElement activeStatement;
046:
047:            ListOfTerm bc = SLListOfTerm.EMPTY_LIST;
048:
049:            private LinkedList children = new LinkedList();
050:
051:            private boolean exprEnd;
052:
053:            private ProgramVariable expressionResultVar = null;
054:
055:            private SourceElementId exprId = null;
056:
057:            private final int id;
058:
059:            private HashSet idsOfNonPVExpressions = new HashSet();
060:
061:            private boolean isMethodInvokation = false;
062:
063:            private ITNode lastExpressionId;
064:
065:            private boolean methodInvocationForET;
066:
067:            private ITNode methodNode;
068:
069:            private Term methodReference;
070:
071:            private boolean methodReturn;
072:
073:            private Term methodReturnResult;
074:
075:            private boolean nobc = false;
076:
077:            private final Node node;
078:
079:            private ListOfProgramVariable parameter;
080:
081:            private final ITNode parent;
082:
083:            ListOfTerm pc = SLListOfTerm.EMPTY_LIST;
084:
085:            private ProgramMethod programMethod;
086:
087:            private Services serv = VisualDebugger.getVisualDebugger()
088:                    .getMediator().getServices();
089:
090:            private SourceElementId statementId = null;
091:
092:            private ListOfTerm values = null;
093:
094:            private VisualDebugger vd = VisualDebugger.getVisualDebugger();
095:
096:            public ITNode(ListOfTerm bc, ListOfTerm pc, Node n, ITNode parent) {
097:                this .bc = bc;
098:                this .parent = parent;
099:
100:                this .id = n.serialNr();
101:                this .pc = pc;
102:                this .node = n;
103:                if (parent != null)
104:                    this .idsOfNonPVExpressions = (HashSet) parent.idsOfNonPVExpressions
105:                            .clone();
106:                this .activeStatement = calcActStatement();
107:                statementId = calcStatementId();
108:                this .exprId = calcExprId();
109:                this .exprEnd = calcExprEnd();
110:                this .methodReturn = calcMethodReturn();
111:                this .isMethodInvokation = this .calcIsMethodInvocation();
112:                setMethodNode();
113:            }
114:
115:            public ITNode(Node n) {
116:                this .parent = null;
117:                this .id = n.serialNr();
118:                this .node = n;
119:                this .methodNode = null;
120:                this .activeStatement = calcActStatement();
121:                this .statementId = calcStatementId();
122:                this .exprEnd = calcExprEnd();
123:                this .exprId = calcExprId();
124:                this .isMethodInvokation = this .calcIsMethodInvocation();
125:            }
126:
127:            public void addChild(ITNode n) {
128:                children.add(n);
129:            }
130:
131:            private SourceElement calcActStatement() {
132:                return vd.determineFirstAndActiveStatement(node);
133:
134:            }
135:
136:            private boolean calcExprEnd() {
137:
138:                if (activeStatement instanceof  MethodBodyStatement) {
139:                    final MethodBodyStatement mbs = (MethodBodyStatement) activeStatement;
140:                    // FIXME: do not lookup for method using Strings use the real AST
141:                    // objects instead
142:                    // This is likely to break as soon as a method ending with sep is
143:                    // present
144:                    if (mbs.getMethodReference().getMethodName().toString()
145:                            .endsWith("sep")) {
146:                        if (mbs.getArguments().size() > 1) { // is expression sep, no
147:                            // statment sep
148:                            this .expressionResultVar = (ProgramVariable) mbs
149:                                    .getArguments().getExpression(1);
150:
151:                            return true;
152:                        }
153:
154:                    }
155:                }
156:
157:                // FIXME: What happens here?
158:                if (true)
159:                    return false;
160:
161:                if (activeStatement != null
162:                        && node.getAppliedRuleApp() instanceof  PosTacletApp) {
163:                    PosTacletApp pta = (PosTacletApp) node.getAppliedRuleApp();
164:
165:                    MethodFrame mf = getMethodFrame(pta);
166:                    if (mf == null || mf.getProgramMethod() == null)
167:                        return false;
168:
169:                    if (mf.getProgramMethod().name().toString().endsWith("sep") // TODO
170:                            // remove
171:                            // taclet
172:                            // names...
173:                            // with
174:                            // special
175:                            // tacltes
176:                            // for
177:                            // sep,
178:                            // eg.
179:                            && node.getAppliedRuleApp().rule().displayName()
180:                                    .toString().equals("method_call_return"))
181:                        return true;
182:                }
183:                return false;
184:            }
185:
186:            /**
187:             * active statement of the form int b = sep(12,expr);
188:             * 
189:             * @return
190:             */
191:            private SourceElementId calcExprId() {
192:                if (parent != null && parent.getExprId() != null)
193:                    this .lastExpressionId = parent;
194:                else if (isExprEnd())
195:                    lastExpressionId = parent.getLastExpressionId()
196:                            .getLastExpressionId();
197:                else if (parent != null)
198:                    lastExpressionId = parent.getLastExpressionId();
199:                else
200:                    this .lastExpressionId = null;
201:
202:                final SourceElement statement = activeStatement;
203:
204:                if (statement != null && statement instanceof  CopyAssignment) {
205:
206:                    final SourceElement act = ((Assignment) statement)
207:                            .getChildAt(1);
208:
209:                    if (act != null && act instanceof  MethodReference) {
210:                        MethodReference mr = (MethodReference) act;
211:                        // FIXME: do not lookup for method using Strings use the real
212:                        // AST objects instead
213:                        // This is likely to break.
214:                        if (mr.getMethodName().toString().equals("sep")
215:                                && mr.getArgumentAt(0) instanceof  IntLiteral) {// TODO
216:                            // sep(11,expr)
217:
218:                            if (node.getAppliedRuleApp() instanceof  PosTacletApp) {
219:
220:                                final ProgramVariable pv = (ProgramVariable) ((Assignment) statement)
221:                                        .getChildAt(0);
222:
223:                                PosTacletApp pta = (PosTacletApp) node
224:                                        .getAppliedRuleApp();
225:                                MethodFrame mf = getMethodFrame(pta);
226:                                ExecutionContext ec = (ExecutionContext) mf
227:                                        .getExecutionContext();
228:                                final SourceElementId sid = new SourceElementId(
229:                                        ec.getTypeReference().toString(),
230:                                        ((IntLiteral) (mr.getArgumentAt(0)))
231:                                                .getValue(),
232:                                        false,
233:                                        pv.getKeYJavaType().getJavaType() == PrimitiveType.JAVA_BOOLEAN);
234:
235:                                if (!isTempVar(mr.getArgumentAt(1), sid))
236:
237:                                    return sid;
238:                            }
239:
240:                        }
241:
242:                    }
243:                }
244:                return null;
245:            }
246:
247:            private boolean calcIsMethodInvocation() {
248:                if (node.getAppliedRuleApp() != null
249:                        && node.getAppliedRuleApp().rule().name().toString()
250:                                .equals("introduce_post_predicate"))
251:                    return false;
252:
253:                if (activeStatement instanceof  MethodBodyStatement) {
254:                    final MethodBodyStatement mbs = (MethodBodyStatement) activeStatement;
255:                    final String name = mbs.getMethodReference()
256:                            .getMethodName().toString();
257:                    // FIXME: do no use Strings to identify these methods
258:                    if (name.startsWith("<alloc") || name.endsWith("sep")) {
259:                        return false; // no element added to method stack
260:                    }
261:                    this .methodInvocationForET = true;
262:
263:                    if (this .inExecutionTree(mbs))
264:                        this .methodInvocationForET = true;
265:                    else
266:                        this .methodInvocationForET = false;
267:
268:                    ReferencePrefix refPre = mbs.getMethodReference()
269:                            .getReferencePrefix();
270:
271:                    if (refPre instanceof  TypeRef) {
272:                        final KeYJavaType kjt = ((TypeRef) refPre)
273:                                .getKeYJavaType();
274:                        final ClassType type = (ClassType) kjt.getJavaType();
275:                        // so = getStaticObject(type, symbolicObjects);
276:
277:                        programMethod = (mbs.getProgramMethod(serv));
278:
279:                    } else {
280:
281:                        final Term t = serv.getTypeConverter()
282:                                .convertToLogicElement(refPre);
283:                        methodReference = t;
284:                        HashMap map = new HashMap();
285:                        Term baseVar = getPref(t);
286:
287:                        PosInOccurrence pio = vd.getProgramPIO(getNode()
288:                                .sequent());
289:                        HashSet set = new HashSet();
290:                        set.add(baseVar.op());
291:                        HashMap result = vd.getValuesForLocation(set, pio);
292:                        Term val = (Term) result.get(TermFactory.DEFAULT
293:                                .createVariableTerm((ProgramVariable) baseVar
294:                                        .op()));
295:                        map.put(baseVar.op(), val);
296:                        ProgVarReplacer pvr = new ProgVarReplacer(map);
297:                        Term res = pvr.replace(t);
298:                        programMethod = mbs.getProgramMethod(serv);
299:
300:                        methodReference = res;
301:                    }
302:
303:                    HashSet set = vd.getParam(mbs);
304:                    ListOfProgramVariable inputPara = vd
305:                            .arrayOfExpression2ListOfProgVar(
306:                                    mbs.getArguments(), 0);
307:                    ProgramVariable[] inputParaArray = inputPara.toArray();
308:
309:                    ArrayOfParameterDeclaration paraDecl = mbs
310:                            .getProgramMethod(serv).getParameters();
311:                    final HashMap loc2val = vd.getValuesForLocation(set, vd
312:                            .getProgramPIO(node.sequent()));
313:
314:                    ListOfProgramVariable paramDeclAsPVList = SLListOfProgramVariable.EMPTY_LIST;
315:
316:                    this .values = SLListOfTerm.EMPTY_LIST;
317:
318:                    for (int i = 0; i < paraDecl.size(); i++) {
319:                        ProgramVariable next = (ProgramVariable) paraDecl
320:                                .getParameterDeclaration(i)
321:                                .getVariableSpecification()
322:                                .getProgramVariable();
323:                        Term val = (Term) loc2val.get(TermFactory.DEFAULT
324:                                .createVariableTerm(inputParaArray[i]));// TODO
325:                        this .values = this .values.append(val);
326:                        paramDeclAsPVList = paramDeclAsPVList.append(next);
327:
328:                    }
329:                    parameter = (paramDeclAsPVList);
330:
331:                    return true;
332:
333:                }
334:
335:                return false;
336:
337:            }
338:
339:            /**
340:             * The method computes if this node represents a method return node, i.e. if
341:             * it describes a state exactly after a method has returned. This is the
342:             * case iff. the parent's node method stack has at least a depth of
343:             * <tt>1</tt> (it must be inside a method) and the difference between the
344:             * method stack depths is exactly once and the reason for the decrease is
345:             * not a thrown exception.
346:             * 
347:             * @return true if this node represent the state after a normal method
348:             *         return
349:             */
350:            private boolean calcMethodReturn() {
351:                if (parent == null) {
352:                    return false;
353:                }
354:
355:                final int stackSize1 = vd.getMethodStackSize(parent.node);
356:                final int stackSize2 = vd.getMethodStackSize(node);
357:
358:                if (stackSize1 <= 0) {
359:                    return false;
360:                }
361:
362:                if (this .activeStatement instanceof  Throw) {
363:                    return false;
364:                }
365:
366:                return (stackSize1 - stackSize2) == 1;
367:            }
368:
369:            private synchronized SourceElementId calcStatementId() {
370:                if (node.getAppliedRuleApp() != null
371:                        && node.getAppliedRuleApp().rule() != null
372:                        && node.getAppliedRuleApp().rule() instanceof  Taclet) {
373:                    Taclet taclet = (Taclet) node.getAppliedRuleApp().rule();
374:                    if (!this .tacletIsInRuleSet(taclet, "statement_sep"))
375:                        return null;
376:
377:                } else
378:                    return null;
379:
380:                SourceElement act = this .activeStatement;
381:                if (act != null && act instanceof  MethodReference) {
382:                    MethodReference mr = (MethodReference) act;
383:                    if (mr.getMethodName().toString().equals(
384:                            VisualDebugger.sepName)
385:                            && mr.getArgumentAt(0) instanceof  IntLiteral) {
386:                        if (node.getAppliedRuleApp() != null
387:                                && node.getAppliedRuleApp().rule() != null
388:                                && !node.getAppliedRuleApp().rule().name()
389:                                        .toString().equals(
390:                                                "introduce_post_predicate")) {
391:                            if (node.getAppliedRuleApp() instanceof  PosTacletApp) {
392:
393:                                PosTacletApp pta = (PosTacletApp) node
394:                                        .getAppliedRuleApp();
395:                                MethodFrame mf = getMethodFrame(pta);
396:                                ExecutionContext ec = (ExecutionContext) mf
397:                                        .getExecutionContext();
398:
399:                                return new SourceElementId(ec
400:                                        .getTypeReference().toString(),
401:                                        ((IntLiteral) (mr.getArgumentAt(0)))
402:                                                .getValue());
403:                            }
404:                        }
405:                    }
406:
407:                }
408:
409:                return null;
410:            }
411:
412:            public SourceElement getActStatement() {
413:
414:                return activeStatement;
415:            }
416:
417:            public ListOfTerm getBc() {
418:                return bc;
419:            }
420:
421:            public ITNode[] getChildren() {
422:                return (ITNode[]) children.toArray(new ITNode[children.size()]);
423:            }
424:
425:            public ProgramVariable getExpressionResultVar() {
426:                return expressionResultVar;
427:            }
428:
429:            public SourceElementId getExprId() {
430:                return exprId;
431:            }
432:
433:            public int getId() {
434:                return id;
435:            }
436:
437:            public ITNode getLastExpressionId() {
438:                return lastExpressionId;
439:            }
440:
441:            private MethodFrame getMethodFrame(PosTacletApp pta) {
442:                final ContextInstantiationEntry cie = pta.instantiations()
443:                        .getContextInstantiation();
444:                if (cie == null)
445:                    return null;
446:                else
447:                    return vd.getMethodFrame(cie.contextProgram());
448:
449:            }
450:
451:            public ITNode getMethodNode() {
452:                return methodNode;
453:            }
454:
455:            public Term getMethodReference() {
456:                return methodReference;
457:            }
458:
459:            public Term getMethodReturnResult() {
460:                return methodReturnResult;
461:            }
462:
463:            public Node getNode() {
464:                return node;
465:            }
466:
467:            public ListOfProgramVariable getParameter() {
468:                return parameter;
469:            }
470:
471:            public ITNode getParent() {
472:                return parent;
473:            }
474:
475:            public ListOfTerm getPc() {
476:                // remove implicit
477:                if (!VisualDebugger.showImpliciteAttr)
478:                    return vd.removeImplicite(pc);
479:                return pc;
480:            }
481:
482:            public ListOfTerm getPc(boolean impl) {
483:                // remove implicit
484:                ListOfTerm result = SLListOfTerm.EMPTY_LIST;
485:
486:                for (IteratorOfTerm it = pc.iterator(); it.hasNext();) {
487:                    final Term n = it.next();
488:                    if (!VisualDebugger.containsImplicitAttr(n) || impl)
489:                        result = result.append(n);
490:
491:                }
492:
493:                return result;
494:            }
495:
496:            private Term getPref(Term t) {
497:                while (t.op() instanceof  AttributeOp) {
498:                    t = t.sub(0);
499:
500:                }
501:
502:                // TODO Auto-generated method stub
503:                return t;
504:            }
505:
506:            public ProgramMethod getProgramMethod() {
507:                return programMethod;
508:            }
509:
510:            public SourceElementId getStatementId() {
511:                return statementId;
512:            }
513:
514:            public ListOfTerm getValues() {
515:                return values;
516:            }
517:
518:            public boolean inExecutionTree(MethodBodyStatement mbs) {
519:                final String name = mbs.getMethodReference().getMethodName()
520:                        .toString();
521:                String className = mbs.getProgramMethod(serv)
522:                        .getContainerType().getSort().toString();
523:                if (className.startsWith("java")
524:                        || className.startsWith("System"))
525:                    return false;
526:
527:                if (!name.startsWith("<") || name.startsWith("<init>"))
528:                    return true;
529:
530:                return false;
531:            }
532:
533:            public boolean isExprEnd() {
534:                return this .exprEnd;
535:            }
536:
537:            public boolean isMethodInvocation() {
538:                return isMethodInvokation;
539:            }
540:
541:            public boolean isMethodInvocationForET() {
542:                return methodInvocationForET;
543:            }
544:
545:            public boolean isMethodReturn() {
546:                return methodReturn;
547:            }
548:
549:            public boolean isNobc() {
550:                return nobc;
551:            }
552:
553:            private boolean isTempVar(Expression e, SourceElementId id) {
554:                if (e instanceof  ProgramVariable) {
555:                    if (this .idsOfNonPVExpressions.contains(id))
556:                        return true;
557:                } else {
558:                    this .idsOfNonPVExpressions.add(id);
559:                }
560:
561:                return false;
562:            }
563:
564:            public void removeAllChildren() {
565:                this .children = new LinkedList();
566:            }
567:
568:            private void setMethodNode() {
569:                if (parent.isMethodInvocation()) {
570:                    this .methodNode = parent;
571:                } else if (methodReturn) {
572:                    if (parent.getMethodNode() != null) {
573:                        // compute return value
574:                        methodNode = parent.getMethodNode().getMethodNode();
575:                        MethodBodyStatement mbs = (MethodBodyStatement) parent
576:                                .getMethodNode().getActStatement();
577:                        IProgramVariable resultVar = mbs.getResultVariable();
578:                        if (resultVar != null) {
579:                            final PosInOccurrence pio = vd
580:                                    .getProgramPIO(getNode().sequent());
581:                            HashSet set = new HashSet();
582:                            set.add(resultVar);
583:                            final HashMap result = vd.getValuesForLocation(set,
584:                                    pio);
585:                            // TODO
586:                            this .methodReturnResult = (Term) result
587:                                    .get(TermFactory.DEFAULT
588:                                            .createVariableTerm((ProgramVariable) resultVar));
589:                        }
590:                    }
591:                } else {
592:                    this .methodNode = parent.getMethodNode();
593:                }
594:            }
595:
596:            public void setNobc(boolean nobc) {
597:                this .nobc = nobc;
598:            }
599:
600:            private boolean tacletIsInRuleSet(Taclet t, String ruleSet) {
601:                ListOfRuleSet list = t.getRuleSets();
602:                RuleSet rs;
603:                while (!list.isEmpty()) {
604:                    rs = list.head();
605:                    Name name = rs.name();
606:                    if (name.toString().equals(ruleSet))
607:                        return true;
608:                    list = list.tail();
609:                }
610:                return false;
611:            }
612:
613:            public String toString() {
614:                String result = "";
615:                result = result + " (( " + bc + " Node " + id + " ";
616:                Iterator it = children.iterator();
617:                while (it.hasNext()) {
618:                    result = result + it.next();
619:                }
620:
621:                result = result + " ))";
622:
623:                return result;
624:            }
625:
626:        }
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