Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-after / core refactoring / org / eclipse / jdt / internal / corext / refactoring / code / flow / InOutFlowAnalyzer.java

diff --git a/case-study/jdt-after/core refactoring/org/eclipse/jdt/internal/corext/refactoring/code/flow/InOutFlowAnalyzer.java b/case-study/jdt-after/core refactoring/org/eclipse/jdt/internal/corext/refactoring/code/flow/InOutFlowAnalyzer.java
new file mode 100644 (file)
index 0000000..c5539d2
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+++ b/case-study/jdt-after/core refactoring/org/eclipse/jdt/internal/corext/refactoring/code/flow/InOutFlowAnalyzer.java
@@ -0,0 +1,122 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.internal.corext.refactoring.code.flow;
+
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.jdt.core.dom.ASTNode;
+import org.eclipse.jdt.core.dom.Block;
+import org.eclipse.jdt.core.dom.CatchClause;
+import org.eclipse.jdt.core.dom.EnhancedForStatement;
+import org.eclipse.jdt.core.dom.ForStatement;
+import org.eclipse.jdt.core.dom.IVariableBinding;
+import org.eclipse.jdt.core.dom.MethodDeclaration;
+import org.eclipse.jdt.core.dom.ReturnStatement;
+import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
+import org.eclipse.jdt.core.dom.VariableDeclarationExpression;
+import org.eclipse.jdt.core.dom.VariableDeclarationFragment;
+import org.eclipse.jdt.core.dom.VariableDeclarationStatement;
+
+public class InOutFlowAnalyzer extends FlowAnalyzer {
+
+       public InOutFlowAnalyzer(FlowContext context) {
+               super(context);
+       }
+
+       public FlowInfo perform(ASTNode[] selectedNodes) {
+               FlowContext context= getFlowContext();
+               GenericSequentialFlowInfo result= createSequential();
+               for (int i= 0; i < selectedNodes.length; i++) {
+                       ASTNode node= selectedNodes[i];
+                       node.accept(this);
+                       result.merge(getFlowInfo(node), context);
+               }
+               return result;
+       }
+
+       @Override
+       protected boolean traverseNode(ASTNode node) {
+               // we are only traversing the selected nodes.
+               return true;
+       }
+
+       @Override
+       protected boolean createReturnFlowInfo(ReturnStatement node) {
+               // we are only traversing selected nodes.
+               return true;
+       }
+
+       @Override
+       public void endVisit(Block node) {
+               super.endVisit(node);
+               clearAccessMode(accessFlowInfo(node), node.statements());
+       }
+
+       @Override
+       public void endVisit(CatchClause node) {
+               super.endVisit(node);
+               clearAccessMode(accessFlowInfo(node), node.getException());
+       }
+
+       @Override
+       public void endVisit(EnhancedForStatement node) {
+               super.endVisit(node);
+               clearAccessMode(accessFlowInfo(node), node.getParameter());
+       }
+
+       @Override
+       public void endVisit(ForStatement node) {
+               super.endVisit(node);
+               clearAccessMode(accessFlowInfo(node), node.initializers());
+       }
+
+       @Override
+       public void endVisit(MethodDeclaration node) {
+               super.endVisit(node);
+               FlowInfo info= accessFlowInfo(node);
+               for (Iterator<SingleVariableDeclaration> iter= node.parameters().iterator(); iter.hasNext();) {
+                       clearAccessMode(info, iter.next());
+               }
+       }
+
+       private void clearAccessMode(FlowInfo info, SingleVariableDeclaration decl) {
+               IVariableBinding binding= decl.resolveBinding();
+               if (binding != null && !binding.isField())
+                       info.clearAccessMode(binding, fFlowContext);
+       }
+
+       private void clearAccessMode(FlowInfo info, List<? extends ASTNode> nodes) {
+               if (nodes== null || nodes.isEmpty() || info == null)
+                       return;
+               for (Iterator<? extends ASTNode> iter= nodes.iterator(); iter.hasNext(); ) {
+                       Object node= iter.next();
+                       Iterator<VariableDeclarationFragment> fragments= null;
+                       if (node instanceof VariableDeclarationStatement) {
+                               fragments= ((VariableDeclarationStatement)node).fragments().iterator();
+                       } else if (node instanceof VariableDeclarationExpression) {
+                               fragments= ((VariableDeclarationExpression)node).fragments().iterator();
+                       }
+                       if (fragments != null) {
+                               while (fragments.hasNext()) {
+                                       clearAccessMode(info, fragments.next());
+                               }
+                       }
+               }
+       }
+
+       private void clearAccessMode(FlowInfo info, VariableDeclarationFragment fragment) {
+                       IVariableBinding binding= fragment.resolveBinding();
+                       if (binding != null && !binding.isField())
+                               info.clearAccessMode(binding, fFlowContext);
+       }
+}
+