gt:     	if (constructorInSuperClass == null || from == null) 
context: /*
   * FindBugs - Find Bugs in Java programs
   * Copyright (C) 2003-2007 University of Maryland
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   * 
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   * 
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package edu.umd.cs.findbugs.ba;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Iterator;
  import java.util.Map;
  import java.util.Set;
  
  import javax.annotation.CheckForNull;
  
  import org.apache.bcel.generic.Type;
  
  import edu.umd.cs.findbugs.OpcodeStack;
  import edu.umd.cs.findbugs.Priorities;
  import edu.umd.cs.findbugs.ProgramPoint;
  import edu.umd.cs.findbugs.SystemProperties;
  import edu.umd.cs.findbugs.OpcodeStack.Item;
  import edu.umd.cs.findbugs.classfile.CheckedAnalysisException;
  import edu.umd.cs.findbugs.classfile.ClassDescriptor;
  import edu.umd.cs.findbugs.classfile.Global;
  import edu.umd.cs.findbugs.detect.UnreadFields;
  import edu.umd.cs.findbugs.util.Util;
  
  /**
   * Interprocedural analysis summary
   * @author pugh
   */
  public class FieldSummary {
  	private Set<XField> writtenOutsideOfConstructor = new HashSet<XField>();
  	private Map<XField, OpcodeStack.Item> summary = new HashMap<XField, OpcodeStack.Item>();
  	private Map<XMethod, Set<XField>> fieldsWritten = new HashMap<XMethod, Set<XField>>();
  	private Map<XMethod, XMethod> nonVoidSuperConstructorsCalled = new HashMap<XMethod, XMethod>();
  	
  	private Map<XMethod, Set<ProgramPoint>> selfMethodsCalledFromConstructor = new HashMap<XMethod, Set<ProgramPoint>>();
  	private Set<ClassDescriptor> callsOverriddenMethodsFromConstructor = new HashSet<ClassDescriptor>();
  
  	private boolean complete = false;
  	public OpcodeStack.Item getSummary(XField field) {
  		if (field == null) 
  			return new OpcodeStack.Item();
  		OpcodeStack.Item result = summary.get(field);
  		if (result == null || field.isVolatile()) {
  	        String signature = field.getSignature();
  	        return new OpcodeStack.Item(signature);
          }
  		return result;
  	}
  
  	public boolean  callsOverriddenMethodsFromConstructor(ClassDescriptor c) {
  		return callsOverriddenMethodsFromConstructor.contains(c);
  	}
  
  	public boolean callsOverriddenMethodsFromSuperConstructor(ClassDescriptor c) {
  		try {
  			while (true) {
  				XClass cx = Global.getAnalysisCache().getClassAnalysis(XClass.class, c);
  				c = cx.getSuperclassDescriptor();
  				if (c == null)
  					return false;
  				if (callsOverriddenMethodsFromConstructor(c))
  					return true;
  			}
  		} catch (CheckedAnalysisException e) {
  			return false;
  		}
  		
  	}
  	public void setCalledFromSuperConstructor(ProgramPoint from, XMethod calledFromConstructor) {
  		 Set<ProgramPoint> set = selfMethodsCalledFromConstructor.get(calledFromConstructor);
  		 if (set == null) {
  			 set = new HashSet<ProgramPoint>();
  			 selfMethodsCalledFromConstructor.put(calledFromConstructor, set);
  		 }
  		 set.add(from);
  		 callsOverriddenMethodsFromConstructor.add(from.method.getClassDescriptor());
  		 
  	}
  	public Set<ProgramPoint> getCalledFromSuperConstructor(ClassDescriptor superClass, XMethod calledFromConstructor) {
  		
  		if (!callsOverriddenMethodsFromConstructor.contains(superClass))
  			return Collections.emptySet();
  		for(Map.Entry<XMethod, Set<ProgramPoint>> e : selfMethodsCalledFromConstructor.entrySet()) {
  			XMethod m = e.getKey();
  			if (m.getName().equals(calledFromConstructor.getName() )
  					&& m.getClassDescriptor().equals(calledFromConstructor.getClassDescriptor())) {
  				String sig1 = m.getSignature();
  				String sig2 = calledFromConstructor.getSignature();
  				sig1 = sig1.substring(0, sig1.indexOf(')'));
  				sig2 = sig2.substring(0, sig2.indexOf(')'));
  				if (sig1.equals(sig2))
  					return e.getValue();
  			}
  		}
  
  		return Collections.emptySet();
  
  	}
  	public void setFieldsWritten(XMethod method, Collection<XField> fields) {
  		if (fields.isEmpty()) return;
  		if (fields.size() == 1) {
  			fieldsWritten.put(method, Collections.singleton(Util.first(fields)));
  			return;
  		}
  		 HashSet<XField> set = new HashSet<XField>(10*fields.size()/7 + 1);
  		 set.addAll(fields);
  		fieldsWritten.put(method, set);
  	}
  	
  	public Set<XField> getFieldsWritten(XMethod method) {
  		Set<XField> result = fieldsWritten.get(method);
  		if (result == null) return Collections.<XField>emptySet();
  		return result;
  	}
  	public boolean isWrittenOutsideOfConstructor(XField field) {
  		if (field.isFinal())
  			return false;
  		if (writtenOutsideOfConstructor.contains(field))
  			return true;
  		if (!AnalysisContext.currentAnalysisContext().unreadFieldsAvailable())
  			return true;
  		UnreadFields unreadFields = AnalysisContext.currentAnalysisContext().getUnreadFields();
  		if (unreadFields.isReflexive(field)) 
  			return true;
  		return false;
  	}
  
  	
  	public boolean addWrittenOutsideOfConstructor(XField field) {
  		return writtenOutsideOfConstructor.add(field);
  	}
  
  	public void mergeSummary(XField fieldOperand, OpcodeStack.Item mergeValue) {
  		if (SystemProperties.ASSERTIONS_ENABLED) {
  			String mSignature = mergeValue.getSignature();
  			
  			Type mergeType = Type.getType(mSignature);
  			Type fieldType = Type.getType(fieldOperand.getSignature());
  			IncompatibleTypes check = IncompatibleTypes.getPriorityForAssumingCompatible(mergeType, fieldType, false);
  			if (check.getPriority() <= Priorities.NORMAL_PRIORITY) {
  				AnalysisContext.logError(fieldOperand + " not compatible with " + mergeValue, 
  						new IllegalArgumentException(check.toString()));
  			}
  			
  		}
  		
  		OpcodeStack.Item oldSummary = summary.get(fieldOperand);
  		if (oldSummary != null) {
  			Item newValue = OpcodeStack.Item.merge(mergeValue, oldSummary);
  			newValue.clearNewlyAllocated();
  			summary.put(fieldOperand, newValue);
  		} else { 
  			if (mergeValue.isNewlyAllocated()) {
  				mergeValue = new OpcodeStack.Item(mergeValue);
  				mergeValue.clearNewlyAllocated();
  			}
  			summary.put(fieldOperand, mergeValue);
  		}
      }
  
  	
  	/**
       * @param complete The complete to set.
       */
      public void setComplete(boolean complete) {
      	int fields = 0;
      	int removed = 0;
      	int retained = 0;
  	    this.complete = complete;
  	    if (isComplete()) {
  	    	for(Iterator<Map.Entry<XField, OpcodeStack.Item>> i =  summary.entrySet().iterator(); i.hasNext(); ) {
  	    		Map.Entry<XField, OpcodeStack.Item> entry = i.next();
  	    		OpcodeStack.Item defaultItem = new OpcodeStack.Item(entry.getKey().getSignature());
  	    		fields++;
  	    		Item value = entry.getValue();
  	    		value.makeCrossMethod();
  				if (defaultItem.equals(value)) {
  	    			i.remove();
  	    			removed++;
  	    		} else {
  	    			retained++;
  	    		}
  	    	}
  	    }
      }
  	/**
       * @return Returns the complete.
       */
      public boolean isComplete() {
  	    return complete;
      }
  
  	/**
       * @param method
       * @param methodOperand
       */
      public void sawSuperCall(XMethod from, XMethod constructorInSuperClass) {
  