- added control flow graph - initial commit

codan/org.eclipse.cdt.codan.core.cxx/META-INF/MANIFEST.MF

@@ -11,6 +11,7 @@ Require-Bundle: org.eclipse.core.runtime,
 Bundle-ActivationPolicy: lazy
 Export-Package: org.eclipse.cdt.codan.core.cxx,
  org.eclipse.cdt.codan.core.cxx.internal.model;x-friends:="org.eclipse.cdt.codan.checkers.ui,org.eclipse.cdt.codan.ui,org.eclipse.cdt.codan.ui.cxx",
+ org.eclipse.cdt.codan.core.cxx.internal.model.cfg;x-friends:="org.eclipse.cdt.codan.core.test",
  org.eclipse.cdt.codan.core.cxx.model
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
 Bundle-Vendor: Eclipse CDT

codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/internal/model/cfg/ControlFlowGraphBuilder.java

@@ -0,0 +1,106 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.core.cxx.internal.model.cfg;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import org.eclipse.cdt.codan.internal.core.cfg.AbstractBasicBlock;
+import org.eclipse.cdt.codan.internal.core.cfg.ConnectorNode;
+import org.eclipse.cdt.codan.internal.core.cfg.DecisionNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IExitNode;
+import org.eclipse.cdt.core.dom.ast.IASTCompoundStatement;
+import org.eclipse.cdt.core.dom.ast.IASTDeclarationStatement;
+import org.eclipse.cdt.core.dom.ast.IASTExpressionStatement;
+import org.eclipse.cdt.core.dom.ast.IASTFunctionDefinition;
+import org.eclipse.cdt.core.dom.ast.IASTIfStatement;
+import org.eclipse.cdt.core.dom.ast.IASTNode;
+import org.eclipse.cdt.core.dom.ast.IASTReturnStatement;
+import org.eclipse.cdt.core.dom.ast.IASTStatement;
+
+/**
+ * TODO: add description
+ */
+public class ControlFlowGraphBuilder {
+	CxxStartNode start;
+	Collection<IExitNode> exits;
+	Collection<IBasicBlock> dead;
+	CxxExitNode returnExit;
+
+	/**
+	 * @param def
+	 * @return
+	 */
+	public CxxControlFlowGraph build(IASTFunctionDefinition def) {
+		IASTStatement body = def.getBody();
+		start = new CxxStartNode(null);
+		exits = new ArrayList<IExitNode>();
+		dead = new ArrayList<IBasicBlock>();
+		IBasicBlock last = createSubGraph(start, body);
+		if (!(last instanceof IExitNode)) {
+			returnExit = new CxxExitNode(last, start, null);
+			addOutgoing(last, returnExit);
+		}
+		return new CxxControlFlowGraph(start, exits);
+	}
+
+	/**
+	 * @param start2
+	 * @param body
+	 */
+	private IBasicBlock createSubGraph(IBasicBlock prev, IASTNode body) {
+		if (body instanceof IASTCompoundStatement) {
+			IASTCompoundStatement comp = (IASTCompoundStatement) body;
+			IASTNode[] children = comp.getChildren();
+			for (int i = 0; i < children.length; i++) {
+				IASTNode node = children[i];
+				IBasicBlock last = createSubGraph(prev, node);
+				prev = last;
+			}
+		} else if (body instanceof IASTExpressionStatement
+				|| body instanceof IASTDeclarationStatement) {
+			CxxPlainNode node = new CxxPlainNode(prev, body);
+			addOutgoing(prev, node);
+			return node;
+		} else if (body instanceof IASTIfStatement) {
+			DecisionNode node = new DecisionNode(prev);
+			addOutgoing(prev, node);
+			ConnectorNode conn = new ConnectorNode();
+			node.setConnectorNode(conn);
+			IBasicBlock els = createSubGraph(node, ((IASTIfStatement) body)
+					.getElseClause());
+			conn.addIncoming(els);
+			addOutgoing(els, conn);
+			IBasicBlock then = createSubGraph(node, ((IASTIfStatement) body)
+					.getThenClause());
+			conn.addIncoming(then);
+			addOutgoing(then, conn);
+			return conn;
+		} else if (body instanceof IASTReturnStatement) {
+			CxxExitNode node = new CxxExitNode(prev, start, body);
+			addOutgoing(prev, node);
+			return node;
+		}
+		return prev;
+	}
+
+	/**
+	 * @param prev
+	 * @param node
+	 */
+	private void addOutgoing(IBasicBlock prev, IBasicBlock node) {
+		if (prev instanceof IExitNode) {
+			dead.add(node);
+		} else if (prev instanceof AbstractBasicBlock) {
+			((AbstractBasicBlock) prev).addOutgoing(node);
+		}
+	}
+}

codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/internal/model/cfg/CxxControlFlowGraph.java

@@ -0,0 +1,45 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.core.cxx.internal.model.cfg;
+
+import java.util.Collection;
+
+import org.eclipse.cdt.codan.internal.core.cfg.ControlFlowGraph;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IExitNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IStartNode;
+import org.eclipse.cdt.core.dom.ast.IASTFunctionDefinition;
+
+/**
+ * TODO: add description
+ */
+public class CxxControlFlowGraph extends ControlFlowGraph {
+	/**
+	 * @param start
+	 * @param exitNodes
+	 */
+	public CxxControlFlowGraph(IStartNode start, Collection<IExitNode> exitNodes) {
+		super(start, exitNodes);
+	}
+
+	public static CxxControlFlowGraph build(IASTFunctionDefinition def) {
+		return new ControlFlowGraphBuilder().build(def);
+	}
+	
+	/* (non-Javadoc)
+	 * @see java.lang.Object#toString()
+	 */
+	@Override
+	public String toString() {
+		// TODO Auto-generated method stub
+		return super.toString();
+	}
+
+}

codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/internal/model/cfg/CxxExitNode.java

@@ -0,0 +1,66 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.core.cxx.internal.model.cfg;
+
+import org.eclipse.cdt.codan.internal.core.cfg.ExitNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IExitNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IStartNode;
+import org.eclipse.cdt.core.dom.ast.IASTNode;
+
+/**
+ * TODO: add description
+ */
+public class CxxExitNode extends ExitNode implements IExitNode {
+	/**
+	 * @param prev
+	 * @param start
+	 */
+	public CxxExitNode(IBasicBlock prev, IStartNode start, IASTNode node) {
+		super(prev, start);
+		setNode(node);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see java.lang.Object#toString()
+	 */
+	@Override
+	public String toString() {
+		if (getNode()!=null)
+			return getNode().getRawSignature();
+		return "return; // fake";
+	}
+
+	/**
+	 * @param node
+	 *            the node to set
+	 */
+	public void setNode(IASTNode node) {
+		setData(node);
+	}
+
+	/**
+	 * @return the node
+	 */
+	public IASTNode getNode() {
+		return (IASTNode) getData();
+	}
+	/**
+	 * @return
+	 */
+	public String toStringData() {
+		if (getNode() == null)
+			return "";
+		return getNode().getRawSignature();
+	}
+}

codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/internal/model/cfg/CxxPlainNode.java

@@ -0,0 +1,61 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.core.cxx.internal.model.cfg;
+
+import org.eclipse.cdt.codan.internal.core.cfg.PlainNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.core.dom.ast.IASTNode;
+
+/**
+ * TODO: add description
+ */
+public class CxxPlainNode extends PlainNode {
+
+
+	/**
+	 * @param prev
+	 * @param body
+	 */
+	public CxxPlainNode(IBasicBlock prev, IASTNode body) {
+		super(prev, null);
+		this.setNode(body);
+	}
+	
+	/* (non-Javadoc)
+	 * @see java.lang.Object#toString()
+	 */
+	@Override
+	public String toString() {
+		return getNode().getRawSignature();
+	}
+
+	/**
+	 * @param node the node to set
+	 */
+	public void setNode(IASTNode node) {
+		setData(node);
+	}
+
+	/**
+	 * @return the node
+	 */
+	public IASTNode getNode() {
+		return (IASTNode) getData();
+	}
+	/**
+	 * @return
+	 */
+	public String toStringData() {
+		if (getNode() == null)
+			return "";
+		return getNode().getRawSignature();
+	}
+}

codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/internal/model/cfg/CxxStartNode.java

@@ -0,0 +1,36 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.codan.core.cxx.internal.model.cfg;
+
+import org.eclipse.cdt.codan.internal.core.cfg.StartNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+
+/**
+ * TODO: add description
+ */
+public class CxxStartNode extends StartNode {
+
+	/**
+	 * @param next
+	 */
+	public CxxStartNode(IBasicBlock next) {
+		super(next);
+	}
+	
+	/* (non-Javadoc)
+	 * @see java.lang.Object#toString()
+	 */
+	@Override
+	public String toString() {
+		return "start";
+	}
+}

codan/org.eclipse.cdt.codan.core.test/META-INF/MANIFEST.MF

@@ -10,7 +10,8 @@ Require-Bundle: org.eclipse.core.runtime,
  org.eclipse.core.resources;bundle-version="3.5.0",
  org.eclipse.cdt.core.tests,
  org.junit;bundle-version="3.8.2",
- org.eclipse.cdt.codan.core;bundle-version="1.0.0"
+ org.eclipse.cdt.codan.core;bundle-version="1.0.0",
+ org.eclipse.cdt.codan.core.cxx;bundle-version="1.0.0"
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
 Bundle-Vendor: Eclipse CDT

codan/org.eclipse.cdt.codan.core.test/src/org/eclipse/cdt/codan/core/cfg/ControlFlowGraphTest.java

@@ -0,0 +1,97 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.core.cfg;
+
+import org.eclipse.cdt.codan.core.cxx.internal.model.cfg.ControlFlowGraphBuilder;
+import org.eclipse.cdt.codan.core.test.CodanTestCase;
+import org.eclipse.cdt.codan.internal.core.cfg.ControlFlowGraph;
+import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
+import org.eclipse.cdt.core.dom.ast.IASTFunctionDefinition;
+import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
+import org.eclipse.cdt.core.dom.ast.c.CASTVisitor;
+import org.eclipse.cdt.core.index.IIndex;
+import org.eclipse.cdt.core.model.CoreModel;
+import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.core.model.ITranslationUnit;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.Path;
+
+/**
+ * TODO: add description
+ */
+public class ControlFlowGraphTest extends CodanTestCase {
+	ControlFlowGraph graph;
+	void processFile(IFile file) throws CoreException, InterruptedException {
+		// create translation unit and access index
+		ICElement model = CoreModel.getDefault().create(file);
+		if (!(model instanceof ITranslationUnit))
+			return; // not a C/C++ file
+		ITranslationUnit tu = (ITranslationUnit) model;
+		IIndex index = CCorePlugin.getIndexManager().getIndex(tu.getCProject());
+		// lock the index for read access
+		index.acquireReadLock();
+		try {
+			// create index based ast
+			IASTTranslationUnit ast = tu.getAST(index,
+					ITranslationUnit.AST_SKIP_INDEXED_HEADERS);
+			// traverse the ast using the visitor pattern.
+			processAst(ast);
+		} finally {
+			index.releaseReadLock();
+		}
+	}
+
+	/**
+	 * @param ast
+	 */
+	private void processAst(IASTTranslationUnit ast) {
+		CASTVisitor visitor = new CASTVisitor() {
+			{
+				shouldVisitDeclarations = true;
+			}
+			public int visit(IASTDeclaration decl) {
+				if (decl instanceof IASTFunctionDefinition) {
+					graph = new ControlFlowGraphBuilder().build((IASTFunctionDefinition) decl);
+					return PROCESS_ABORT;
+				}
+				return PROCESS_CONTINUE;
+			}
+		};
+		ast.accept(visitor);
+	
+	}
+	void buildCfg() {
+		try {
+			Path path = new Path(currentFile.toString());
+			IResource el = cproject.getProject().findMember(currentFile.getName());
+			processFile((IFile) el);
+		} catch (Exception e) {
+			e.printStackTrace();
+			fail(e.getMessage());
+		}
+	}
+	/*-
+	 <code file="test1.c">
+	 main() {
+	   int a;
+	   a=1; 
+	 }
+	 </code>
+	 */
+	public void test1() {
+		load("test1.c");
+		buildCfg();
+		graph.print(graph.getStartNode());
+	}
+}

codan/org.eclipse.cdt.codan.core.test/src/org/eclipse/cdt/codan/core/test/CheckerTestCase.java

@@ -10,208 +10,20 @@
  *******************************************************************************/
 package org.eclipse.cdt.codan.core.test;
 
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.PrintStream;
-import java.net.URL;
-import java.util.ArrayList;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 import org.eclipse.cdt.codan.core.CodanRuntime;
 import org.eclipse.cdt.codan.core.model.IProblemReporter;
-import org.eclipse.cdt.core.CCorePlugin;
-import org.eclipse.cdt.core.dom.IPDOMManager;
-import org.eclipse.cdt.core.model.ICProject;
-import org.eclipse.cdt.core.testplugin.CProjectHelper;
-import org.eclipse.cdt.core.testplugin.util.BaseTestCase;
 import org.eclipse.core.resources.IMarker;
-import org.eclipse.core.resources.IProject;
-import org.eclipse.core.resources.IResource;
-import org.eclipse.core.resources.IWorkspace;
-import org.eclipse.core.resources.IWorkspaceRunnable;
-import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
-import org.eclipse.core.runtime.IProgressMonitor;
-import org.eclipse.core.runtime.NullProgressMonitor;
 
 /**
  * @author Alena
  * 
  */
-public class CheckerTestCase extends BaseTestCase {
-	ArrayList<File> tempFiles = new ArrayList<File>();
-	protected File tmpDir;
-	private ICProject cproject;
+public class CheckerTestCase extends CodanTestCase {
 	private IMarker[] markers;
-	private File currentFile;
 
-	/**
-	 * Override for c++
-	 * 
-	 * @return is c++ tests
-	 */
-	public boolean isCpp() {
-		return false;
-	}
-
-	public void setUp() throws Exception {
-		super.setUp();
-		removeLeftOverProjects();
-		cproject = createProject(isCpp());
-		tmpDir = cproject.getProject().getLocation().makeAbsolute().toFile();
-	}
-
-	public File load(String file) {
-		CodanCoreTestActivator plugin = CodanCoreTestActivator.getDefault();
-		String name = getClass().getName();
-		String classFile = name.replaceAll("\\.", "/");
-		classFile += ".java";
-		InputStream st = null;
-		File f = null;
-		try {
-			if (plugin != null) {
-				URL resource = plugin.getBundle().getResource(
-						"src/" + classFile);
-				st = resource.openStream();
-			} else {
-				st = getClass().getResourceAsStream(classFile);
-			}
-		} catch (IOException e) {
-			fail("Cannot find java file: " + classFile);
-		}
-		try {
-			f = saveFile(st, file);
-			st.close();
-			currentFile = f;
-		} catch (IOException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		}
-		return f;
-	}
-	static final Pattern filePattern = Pattern.compile("file=\"(.*)\"");
-
-	/**
-	 * @param st
-	 * @param file
-	 * @return
-	 * @throws IOException
-	 */
-	private File saveFile(InputStream st, String file) throws IOException {
-		BufferedReader r = new BufferedReader(new InputStreamReader(st));
-		String line;
-		File testFile = new File(tmpDir, file);
-		tempFiles.add(testFile);
-		PrintStream wr = new PrintStream(testFile);
-		try {
-			boolean print = false;
-			while ((line = r.readLine()) != null) {
-				if (line.contains("<code ")) {
-					Matcher m = filePattern.matcher(line);
-					if (m.find()) {
-						String userFile = m.group(1);
-						if (userFile.equals(file)) {
-							print = true;
-						}
-					}
-				} else if (line.contains("</code>")) {
-					print = false;
-				} else if (print) {
-					wr.println(line);
-				}
-			}
-		} finally {
-			wr.close();
-		}
-		return testFile;
-	}
-
-	public void tearDown() throws CoreException {
-		if (cproject != null) {
-			try {
-				cproject.getProject().delete(
-						IResource.FORCE
-								| IResource.ALWAYS_DELETE_PROJECT_CONTENT,
-						new NullProgressMonitor());
-			} catch (CoreException e) {
-				throw e;
-			}
-		}
-	}
-
-	/**
-	 * @throws CoreException
-	 */
-	private void removeLeftOverProjects() throws CoreException {
-		final IWorkspace workspace = ResourcesPlugin.getWorkspace();
-		IProject[] projects = workspace.getRoot().getProjects();
-		for (int i = 0; i < projects.length; i++) {
-			IProject p = projects[i];
-			if (p.getName().startsWith("Codan")) {
-				p.delete(IResource.FORCE
-						| IResource.ALWAYS_DELETE_PROJECT_CONTENT,
-						new NullProgressMonitor());
-			}
-		}
-	}
-
-	protected ICProject createProject(final boolean cpp) throws CoreException {
-		final ICProject cprojects[] = new ICProject[1];
-		ModelJoiner mj = new ModelJoiner();
-		try {
-			// Create the cproject
-			final String projectName = "CodanProjTest_"
-					+ System.currentTimeMillis();
-			final IWorkspace workspace = ResourcesPlugin.getWorkspace();
-			workspace.run(new IWorkspaceRunnable() {
-				public void run(IProgressMonitor monitor) throws CoreException {
-					// Create the cproject
-					ICProject cproject = cpp ? CProjectHelper.createCCProject(
-							projectName, null, IPDOMManager.ID_NO_INDEXER)
-							: CProjectHelper.createCProject(projectName, null,
-									IPDOMManager.ID_NO_INDEXER);
-					cprojects[0] = cproject;
-				}
-			}, null);
-			mj.join();
-			// Index the cproject
-			CCorePlugin.getIndexManager().setIndexerId(cprojects[0],
-					IPDOMManager.ID_FAST_INDEXER);
-			// wait until the indexer is done
-			assertTrue(CCorePlugin.getIndexManager().joinIndexer(360000,
-					new NullProgressMonitor()));
-		} finally {
-			mj.dispose();
-		}
-		return cprojects[0];
-	}
-
-	protected void loadFiles() throws CoreException {
-		ModelJoiner mj = new ModelJoiner();
-		try {
-			final IWorkspace workspace = ResourcesPlugin.getWorkspace();
-			workspace.run(new IWorkspaceRunnable() {
-				public void run(IProgressMonitor monitor) throws CoreException {
-					cproject.getProject().refreshLocal(1, monitor);
-				}
-			}, null);
-			mj.join();
-			// Index the cproject
-			CCorePlugin.getIndexManager().setIndexerId(cproject,
-					IPDOMManager.ID_FAST_INDEXER);
-			// wait until the indexer is done
-			assertTrue(CCorePlugin.getIndexManager().joinIndexer(360000,
-					new NullProgressMonitor()));
-		} finally {
-			mj.dispose();
-		}
-		return;
-	}
 
 	/**
 	 * @param i
@@ -243,31 +55,6 @@ public class CheckerTestCase extends BaseTestCase {
 		assertTrue("Error on line " + i + " not found ", found);
 	}
 
-	/**
-	 * @param pos
-	 * @return
-	 * @throws IOException
-	 */
-	private int pos2line(int pos) throws IOException {
-		FileInputStream st = new FileInputStream(currentFile);
-		try {
-			int c;
-			int line = 1;
-			int cur = 0;
-			while ((c = st.read()) != -1) {
-				if (c == '\n')
-					line++;
-				if (cur >= pos)
-					return line;
-				cur++;
-			}
-			;
-		} finally {
-			st.close();
-		}
-		return 0;
-	}
-
 	public void checkNoErrors() {
 		assertTrue("Found errors but should not", markers == null
 				|| markers.length == 0);

codan/org.eclipse.cdt.codan.core.test/src/org/eclipse/cdt/codan/core/test/CodanTestCase.java

@@ -0,0 +1,205 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.core.test;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+
+import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.dom.IPDOMManager;
+import org.eclipse.cdt.core.model.ICProject;
+import org.eclipse.cdt.core.testplugin.CProjectHelper;
+import org.eclipse.cdt.core.testplugin.util.BaseTestCase;
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.IWorkspace;
+import org.eclipse.core.resources.IWorkspaceRunnable;
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.NullProgressMonitor;
+
+/**
+ * TODO: add description
+ */
+public class CodanTestCase extends BaseTestCase {
+	ArrayList<File> tempFiles = new ArrayList<File>();
+	protected File tmpDir;
+	protected ICProject cproject;
+	protected File currentFile;
+
+	/**
+	 * 
+	 */
+	public CodanTestCase() {
+		super();
+	}
+
+	/**
+	 * @param name
+	 */
+	public CodanTestCase(String name) {
+		super(name);
+	}
+
+	/**
+	 * Override for c++
+	 * 
+	 * @return is c++ tests
+	 */
+	public boolean isCpp() {
+		return false;
+	}
+
+	public void setUp() throws Exception {
+		super.setUp();
+		removeLeftOverProjects();
+		cproject = createProject(isCpp());
+		tmpDir = cproject.getProject().getLocation().makeAbsolute().toFile();
+	}
+
+	public File load(String file) {
+		Class clazz = getClass();
+		InputStream st = null;
+		try {
+			st = TestUtils.getJavaFileText(clazz);
+		} catch (IOException e) {
+			fail("Cannot find java file: " + clazz + ": " + e.getMessage());
+		}
+	
+		try {
+			File testFile = new File(tmpDir, file);
+			tempFiles.add(testFile);
+			TestUtils.saveFile(st, testFile);
+			st.close();
+			currentFile = testFile;
+			try {
+				cproject.getProject().refreshLocal(1, null);
+			} catch (CoreException e) {
+				//  hmm
+			}
+			return testFile;
+		} catch (IOException e) {
+			fail("Cannot save test: " + file + ": " + e.getMessage());
+			return null;
+		}
+	}
+
+	public void tearDown() throws CoreException {
+		if (cproject != null) {
+			try {
+				cproject.getProject().delete(
+						IResource.FORCE
+								| IResource.ALWAYS_DELETE_PROJECT_CONTENT,
+						new NullProgressMonitor());
+			} catch (CoreException e) {
+				throw e;
+			}
+		}
+	}
+
+	/**
+	 * @throws CoreException
+	 */
+	private void removeLeftOverProjects() throws CoreException {
+		final IWorkspace workspace = ResourcesPlugin.getWorkspace();
+		IProject[] projects = workspace.getRoot().getProjects();
+		for (int i = 0; i < projects.length; i++) {
+			IProject p = projects[i];
+			if (p.getName().startsWith("Codan")) {
+				p.delete(IResource.FORCE
+						| IResource.ALWAYS_DELETE_PROJECT_CONTENT,
+						new NullProgressMonitor());
+			}
+		}
+	}
+
+	protected ICProject createProject(final boolean cpp) throws CoreException {
+		final ICProject cprojects[] = new ICProject[1];
+		ModelJoiner mj = new ModelJoiner();
+		try {
+			// Create the cproject
+			final String projectName = "CodanProjTest_"
+					+ System.currentTimeMillis();
+			final IWorkspace workspace = ResourcesPlugin.getWorkspace();
+			workspace.run(new IWorkspaceRunnable() {
+				public void run(IProgressMonitor monitor) throws CoreException {
+					// Create the cproject
+					ICProject cproject = cpp ? CProjectHelper.createCCProject(
+							projectName, null, IPDOMManager.ID_NO_INDEXER)
+							: CProjectHelper.createCProject(projectName, null,
+									IPDOMManager.ID_NO_INDEXER);
+					cprojects[0] = cproject;
+				}
+			}, null);
+			mj.join();
+			// Index the cproject
+			CCorePlugin.getIndexManager().setIndexerId(cprojects[0],
+					IPDOMManager.ID_FAST_INDEXER);
+			// wait until the indexer is done
+			assertTrue(CCorePlugin.getIndexManager().joinIndexer(360000,
+					new NullProgressMonitor()));
+		} finally {
+			mj.dispose();
+		}
+		return cprojects[0];
+	}
+
+	protected void loadFiles() throws CoreException {
+		ModelJoiner mj = new ModelJoiner();
+		try {
+			final IWorkspace workspace = ResourcesPlugin.getWorkspace();
+			workspace.run(new IWorkspaceRunnable() {
+				public void run(IProgressMonitor monitor) throws CoreException {
+					cproject.getProject().refreshLocal(1, monitor);
+				}
+			}, null);
+			mj.join();
+			// Index the cproject
+			CCorePlugin.getIndexManager().setIndexerId(cproject,
+					IPDOMManager.ID_FAST_INDEXER);
+			// wait until the indexer is done
+			assertTrue(CCorePlugin.getIndexManager().joinIndexer(360000,
+					new NullProgressMonitor()));
+		} finally {
+			mj.dispose();
+		}
+		return;
+	}
+
+	/**
+	 * @param pos
+	 * @return
+	 * @throws IOException
+	 */
+	protected int pos2line(int pos) throws IOException {
+		FileInputStream st = new FileInputStream(currentFile);
+		try {
+			int c;
+			int line = 1;
+			int cur = 0;
+			while ((c = st.read()) != -1) {
+				if (c == '\n')
+					line++;
+				if (cur >= pos)
+					return line;
+				cur++;
+			}
+			;
+		} finally {
+			st.close();
+		}
+		return 0;
+	}
+}

codan/org.eclipse.cdt.codan.core.test/src/org/eclipse/cdt/codan/core/test/TestUtils.java

@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.codan.core.test;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.PrintStream;
+import java.net.URL;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * TODO: add description
+ */
+public class TestUtils {
+	static final Pattern filePattern = Pattern.compile("file=\"(.*)\"");
+	/**
+	 * @param st
+	 * @param testFile
+	 * @return
+	 * @throws FileNotFoundException
+	 * @throws IOException
+	 */
+	public static File saveFile(InputStream st, File testFile)
+			throws FileNotFoundException, IOException {
+		BufferedReader r = new BufferedReader(new InputStreamReader(st));
+		String line;
+		PrintStream wr = new PrintStream(testFile);
+		try {
+			boolean print = false;
+			while ((line = r.readLine()) != null) {
+				if (line.contains("<code ")) {
+					Matcher m = filePattern.matcher(line);
+					if (m.find()) {
+						String userFile = m.group(1);
+						if (userFile.equals(testFile.getName())) {
+							print = true;
+						}
+					}
+				} else if (line.contains("</code>")) {
+					print = false;
+				} else if (print) {
+					wr.println(line);
+				}
+			}
+		} finally {
+			wr.close();
+		}
+		return testFile;
+	}
+
+	/**
+	 * @param clazz
+	 * @return
+	 * @throws IOException
+	 */
+	public static InputStream getJavaFileText(Class clazz) throws IOException {
+		CodanCoreTestActivator plugin = CodanCoreTestActivator.getDefault();
+		String classFile = clazz.getName().replaceAll("\\.", "/");
+		classFile += ".java";
+		InputStream st = null;
+
+			if (plugin != null) {
+				URL resource = plugin.getBundle().getResource(
+						"src/" + classFile);
+				st = resource.openStream();
+			} else {
+				st = clazz.getResourceAsStream(classFile);
+			}
+
+		return st;
+	}
+}

codan/org.eclipse.cdt.codan.core/META-INF/MANIFEST.MF

@@ -16,4 +16,6 @@ Export-Package: org.eclipse.cdt.codan.core,
    org.eclipse.cdt.codan.core.cxx,
    org.eclipse.cdt.codan.core.test,
    org.eclipse.cdt.codan.ui",
- org.eclipse.cdt.codan.internal.core.model;x-friends:="org.eclipse.cdt.codan.core.cxx,org.eclipse.cdt.codan.core.test,org.eclipse.cdt.codan.ui"
+ org.eclipse.cdt.codan.internal.core.cfg;x-friends:="org.eclipse.cdt.codan.core.cxx",
+ org.eclipse.cdt.codan.internal.core.model;x-friends:="org.eclipse.cdt.codan.core.cxx,org.eclipse.cdt.codan.core.test,org.eclipse.cdt.codan.ui",
+ org.eclipse.cdt.codan.provisional.core.model.cfg

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/AbstarctBasicBlock.java

@@ -1,29 +0,0 @@
-package org.eclipse.cdt.codan.internal.core.cfg;
-
-import java.util.Iterator;
-
-import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
-
-public abstract class AbstarctBasicBlock implements IBasicBlock {
-	static class OneElementIterator<T> implements Iterator<T> {
-		private T o;
-
-		public OneElementIterator(T o) {
-			this.o = o;
-		}
-
-		public boolean hasNext() {
-			return o != null;
-		}
-
-		public T next() {
-			T x = o;
-			o = null;
-			return x;
-		}
-
-		public void remove() {
-			throw new UnsupportedOperationException();
-		}
-	}
-}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/AbstractBasicBlock.java

@@ -0,0 +1,49 @@
+package org.eclipse.cdt.codan.internal.core.cfg;
+
+import java.util.Iterator;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+
+public abstract class AbstractBasicBlock implements IBasicBlock {
+	private Object data;
+
+	public Object getData() {
+		return data;
+	}
+
+	public void setData(Object data) {
+		this.data = data;
+	}
+
+	static class OneElementIterator<V> implements Iterator<V> {
+		private V o;
+
+		public OneElementIterator(V o) {
+			this.o = o;
+		}
+
+		public boolean hasNext() {
+			return o != null;
+		}
+
+		public V next() {
+			V x = o;
+			o = null;
+			return x;
+		}
+
+		public void remove() {
+			throw new UnsupportedOperationException();
+		}
+	}
+
+	public abstract void addOutgoing(IBasicBlock node);
+
+	/**
+	 * @return
+	 */
+	public String toStringData() {
+		if (getData() == null)
+			return "";
+		return getData().toString();
+	}
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/AbstractSingleIncomingNode.java

@@ -0,0 +1,31 @@
+package org.eclipse.cdt.codan.internal.core.cfg;
+
+import java.util.Iterator;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.ISingleIncoming;
+
+/**
+ * Abstrat node with one incoming arc
+ * 
+ */
+public abstract class AbstractSingleIncomingNode extends AbstractBasicBlock
+		implements ISingleIncoming {
+	final IBasicBlock prev;
+
+	public AbstractSingleIncomingNode(IBasicBlock prev) {
+		super();
+		this.prev = prev;
+	}
+
+	public Iterator<IBasicBlock> getIncomingIterator() {
+		return new OneElementIterator<IBasicBlock>(prev);
+	}
+
+	public int getIncomingSize() {
+		return 1;
+	}
+
+	public IBasicBlock getIncoming() {
+		return prev;
+	}
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/AbstractSingleOutgoingNode.java

@@ -0,0 +1,51 @@
+package org.eclipse.cdt.codan.internal.core.cfg;
+
+import java.util.Iterator;
+
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.ISingleOutgoing;
+
+/**
+ * Abstract impl of basic block with single outgoing arc
+ * 
+ */
+public abstract class AbstractSingleOutgoingNode extends AbstractBasicBlock
+		implements ISingleOutgoing {
+	private IBasicBlock next;
+
+	public AbstractSingleOutgoingNode(IBasicBlock next) {
+		super();
+		this.next = next;
+	}
+
+	public Iterator<IBasicBlock> getOutgoingIterator() {
+		return new OneElementIterator<IBasicBlock>(next);
+	}
+
+	public int getOutgoingSize() {
+		return 1;
+	}
+
+	public IBasicBlock getOutgoing() {
+		return next;
+	}
+
+	public void setOutgoing(IBasicBlock exit) {
+		if (this.next != null)
+			throw new IllegalArgumentException(
+					"Cannot modify already exiting connector"); //$NON-NLS-1$
+		this.next = exit;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see
+	 * org.eclipse.cdt.codan.internal.core.cfg.AbstractBasicBlock#addOutgoing
+	 * (org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock)
+	 */
+	@Override
+	public void addOutgoing(IBasicBlock node) {
+		setOutgoing(node);
+	}
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/ConnectorNode.java

@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.internal.core.cfg;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IConnectorNode;
+
+/**
+ * TODO: add description
+ */
+public class ConnectorNode extends AbstractSingleOutgoingNode implements
+		IConnectorNode {
+	ArrayList<IBasicBlock> incoming = new ArrayList<IBasicBlock>(2);
+
+	/**
+	 * @param next
+	 */
+	public ConnectorNode() {
+		super(null);
+	}
+
+	public void addIncoming(IBasicBlock node) {
+		incoming.add(node);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @seeorg.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock#
+	 * getIncomingIterator()
+	 */
+	public Iterator<IBasicBlock> getIncomingIterator() {
+		return incoming.iterator();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see
+	 * org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock#getIncomingSize
+	 * ()
+	 */
+	public int getIncomingSize() {
+		// TODO Auto-generated method stub
+		return incoming.size();
+	}
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/ControlFlowGraph.java

@@ -0,0 +1,99 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.internal.core.cfg;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IConnectorNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IControlFlowGraph;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IDecisionArc;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IDecisionNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IExitNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.ISingleOutgoing;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IStartNode;
+
+/**
+ * TODO: add description
+ */
+public class ControlFlowGraph implements IControlFlowGraph {
+	private List<IExitNode> exitNodes;
+	private IStartNode start;
+
+	public ControlFlowGraph(IStartNode start, Collection<IExitNode> exitNodes) {
+		setExitNodes(exitNodes);
+		this.start = start;
+	}
+
+	public Iterator<IExitNode> getExitNodeIterator() {
+		return exitNodes.iterator();
+	}
+
+	public int getExitNodeSize() {
+		return exitNodes.size();
+	}
+
+	public void setExitNodes(Collection<IExitNode> exitNodes) {
+		if (this.exitNodes != null)
+			throw new IllegalArgumentException(
+					"Cannot modify already exiting connector"); //$NON-NLS-1$
+		this.exitNodes = Collections.unmodifiableList(new ArrayList<IExitNode>(
+				exitNodes));
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @seeorg.eclipse.cdt.codan.provisional.core.model.cfg.IControlFlowGraph#
+	 * getStartNode()
+	 */
+	public IStartNode getStartNode() {
+		return start;
+	}
+
+	void setStartNode(IStartNode start) {
+		this.start = start;
+	}
+
+	public void print(IBasicBlock node) {
+		System.out.println(node.toString());
+		if (node instanceof IConnectorNode)
+			return;
+		if (node instanceof IDecisionNode) {
+			// todo
+			Iterator<IDecisionArc> decisionArcs = ((IDecisionNode) node)
+					.getDecisionArcs();
+			for (; decisionArcs.hasNext();) {
+				IDecisionArc arc = decisionArcs.next();
+				System.out.println("{" + arc.getIndex() + ":");
+				print(arc.getOutgoing());
+				System.out.println("}");
+			}
+			print(((IDecisionNode) node).getConnectionNode());
+		} else if (node instanceof ISingleOutgoing) {
+			print(((ISingleOutgoing) node).getOutgoing());
+		}
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @seeorg.eclipse.cdt.codan.provisional.core.model.cfg.IControlFlowGraph#
+	 * getUnconnectedNodeIterator()
+	 */
+	public Iterator<IBasicBlock> getUnconnectedNodeIterator() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/DecisionNode.java

@@ -0,0 +1,153 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.internal.core.cfg;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IConnectorNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IDecisionArc;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IDecisionNode;
+
+/**
+ * @see {@link IDecisionNode}
+ */
+public class DecisionNode extends AbstractSingleIncomingNode implements
+		IDecisionNode {
+	private List<IDecisionArc> next = new ArrayList<IDecisionArc>(2);
+	private IConnectorNode conn;
+
+	class DecisionArc implements IDecisionArc {
+		int index;
+		IBasicBlock node;
+
+		DecisionArc(int i, IBasicBlock node) {
+			this.index = i;
+			this.node = node;
+		}
+
+		public int getIndex() {
+			return index;
+		}
+
+		public IBasicBlock getOutgoing() {
+			return node;
+		}
+
+		public IDecisionNode getDecisionNode() {
+			return DecisionNode.this;
+		}
+
+		/*
+		 * (non-Javadoc)
+		 * 
+		 * @see java.lang.Object#toString()
+		 */
+		@Override
+		public String toString() {
+			return index + "";
+		}
+	}
+
+	/**
+	 * @param prev
+	 */
+	public DecisionNode(IBasicBlock prev) {
+		super(prev);
+	}
+
+	public void setDecisionArcs(Collection<IDecisionArc> next) {
+		this.next = Collections.unmodifiableList(new ArrayList<IDecisionArc>(
+				next));
+	}
+
+	@Override
+	public void addOutgoing(IBasicBlock node) {
+		DecisionArc arc = new DecisionArc(getDecisionArcSize(), node);
+		next.add(arc);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @seeorg.eclipse.cdt.codan.provisional.core.model.cfg.IDecisionNode#
+	 * getDecisionArcs()
+	 */
+	public Iterator<IDecisionArc> getDecisionArcs() {
+		return next.iterator();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @seeorg.eclipse.cdt.codan.provisional.core.model.cfg.IDecisionNode#
+	 * getDecisionArcSize()
+	 */
+	public int getDecisionArcSize() {
+		return next.size();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @seeorg.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock#
+	 * getOutgoingIterator()
+	 */
+	public Iterator<IBasicBlock> getOutgoingIterator() {
+		return new Iterator<IBasicBlock>() {
+			private Iterator<IDecisionArc> it;
+			{
+				it = next.iterator();
+			}
+
+			public boolean hasNext() {
+				return it.hasNext();
+			}
+
+			public IBasicBlock next() {
+				IDecisionArc arc = it.next();
+				return arc.getOutgoing();
+			}
+
+			public void remove() {
+				throw new UnsupportedOperationException();
+			}
+		};
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see
+	 * org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock#getOutgoingSize
+	 * ()
+	 */
+	public int getOutgoingSize() {
+		return next.size();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @seeorg.eclipse.cdt.codan.provisional.core.model.cfg.IDecisionNode#
+	 * getConnectionNode()
+	 */
+	public IConnectorNode getConnectionNode() {
+		return conn;
+	}
+
+	public void setConnectorNode(IConnectorNode conn) {
+		this.conn = conn;
+	}
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/ExitNode.java

@@ -0,0 +1,60 @@
+package org.eclipse.cdt.codan.internal.core.cfg;
+
+import java.util.Collections;
+import java.util.Iterator;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IExitNode;
+import org.eclipse.cdt.codan.provisional.core.model.cfg.IStartNode;
+
+/**
+ * Plain node has one prev one jump
+ * 
+ */
+public class ExitNode extends AbstractBasicBlock implements IExitNode {
+	private IBasicBlock prev;
+	private IStartNode start;
+
+	public ExitNode(IBasicBlock prev, IStartNode start) {
+		super();
+		this.prev = prev;
+		this.start = start;
+	}
+
+	public Iterator<IBasicBlock> getIncomingIterator() {
+		return new OneElementIterator<IBasicBlock>(prev);
+	}
+
+	@SuppressWarnings("unchecked")
+	public Iterator<IBasicBlock> getOutgoingIterator() {
+		return Collections.EMPTY_LIST.iterator();
+	}
+
+	public int getIncomingSize() {
+		return 1;
+	}
+
+	public int getOutgoingSize() {
+		return 0;
+	}
+
+	public IBasicBlock getIncoming() {
+		return prev;
+	}
+
+	public IStartNode getStartNode() {
+		return start;
+	}
+
+	public void setIncoming(IBasicBlock prev) {
+		this.prev = prev;
+	}
+
+	public void setStartNode(IStartNode start) {
+		this.start = start;
+	}
+
+	@Override
+	public void addOutgoing(IBasicBlock node) {
+		throw new UnsupportedOperationException();
+	}
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/JumpNode.java

@@ -1,47 +1,33 @@
 package org.eclipse.cdt.codan.internal.core.cfg;
 
 import java.util.Iterator;
-
 import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
 import org.eclipse.cdt.codan.provisional.core.model.cfg.IConnectorNode;
 import org.eclipse.cdt.codan.provisional.core.model.cfg.IJumpNode;
 
 /**
- * Plain node has one prev one jump
- *
+ * Jump node is node that connects unusual control pass, such as goto, break and
+ * continue
+ * 
  */
-public class JumpNode extends AbstarctBasicBlock implements IJumpNode {
-	final private IBasicBlock entry;
-	private IBasicBlock jump;
+public class JumpNode extends AbstractSingleIncomingNode implements IJumpNode {
+	private IConnectorNode jump;
 	private boolean backward;
 
-	public JumpNode(IBasicBlock entry, IBasicBlock jump, boolean backward) {
-		super();
-		this.entry = entry;
+	public JumpNode(IBasicBlock entry, IConnectorNode jump, boolean backward) {
+		super(entry);
 		this.jump = jump;
 		this.backward = backward;
 	}
 
-	public Iterator<IBasicBlock> getIncomingIterator() {
-		return new OneElementIterator<IBasicBlock>(entry);
-	}
-
 	public Iterator<IBasicBlock> getOutgoingIterator() {
 		return new OneElementIterator<IBasicBlock>(jump);
 	}
 
-	public int getIncomingSize() {
-		return 1;
-	}
-
 	public int getOutgoingSize() {
 		return 1;
 	}
 
-	public IBasicBlock getIncoming() {
-		return entry;
-	}
-
 	public IBasicBlock getOutgoing() {
 		return jump;
 	}
@@ -50,9 +36,10 @@ public class JumpNode extends AbstarctBasicBlock implements IJumpNode {
 		return backward;
 	}
 
-	public void setJump(IBasicBlock jump) {
-		if (!(jump instanceof IConnectorNode))
-			throw new IllegalArgumentException("Jump target must be a connection node"); //$NON-NLS-1$
+	public void setJump(IConnectorNode jump) {
+		if (this.jump != null)
+			throw new IllegalArgumentException(
+					"Cannot modify exiting connector"); //$NON-NLS-1$
 		this.jump = jump;
 	}
 
@@ -60,4 +47,8 @@ public class JumpNode extends AbstarctBasicBlock implements IJumpNode {
 		this.backward = backward;
 	}
 
+	@Override
+	public void addOutgoing(IBasicBlock node) {
+		throw new UnsupportedOperationException();
+	}
 }

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/PlainNode.java

@@ -6,45 +6,45 @@ import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
 import org.eclipse.cdt.codan.provisional.core.model.cfg.IPlainNode;
 
 /**
- * Plain node has one prev one jump
- *
+ * Plain node has one incoming arc and one outgoing arc
+ * 
  */
-public class PlainNode extends AbstarctBasicBlock implements IPlainNode {
-	final IBasicBlock prev;
+public class PlainNode extends AbstractSingleIncomingNode implements IPlainNode {
 	IBasicBlock next;
 
-	public PlainNode(IBasicBlock entry, IBasicBlock exit) {
-		super();
-		this.prev = entry;
-		this.next = exit;
-	}
-
-	public Iterator<IBasicBlock> getIncomingIterator() {
-		return new OneElementIterator<IBasicBlock>(prev);
+	public PlainNode(IBasicBlock prev, IBasicBlock next) {
+		super(prev);
+		this.next = next;
 	}
 
 	public Iterator<IBasicBlock> getOutgoingIterator() {
 		return new OneElementIterator<IBasicBlock>(next);
 	}
 
-	public int getIncomingSize() {
-		return 1;
-	}
-
 	public int getOutgoingSize() {
 		return 1;
 	}
 
-	public IBasicBlock getIncoming() {
-		return prev;
-	}
-
 	public IBasicBlock getOutgoing() {
 		return next;
 	}
 
 	public void setOutgoing(IBasicBlock exit) {
-		if (this.next != null) throw new IllegalArgumentException("Cannot modify already exiting connector"); //$NON-NLS-1$
+		if (this.next != null)
+			throw new IllegalArgumentException(
+					"Cannot modify already exiting connector"); //$NON-NLS-1$
 		this.next = exit;
 	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see
+	 * org.eclipse.cdt.codan.internal.core.cfg.AbstractBasicBlock#addOutgoing
+	 * (org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock)
+	 */
+	@Override
+	public void addOutgoing(IBasicBlock node) {
+		setOutgoing(node);
+	}
 }

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/cfg/StartNode.java

@@ -1,27 +1,17 @@
 package org.eclipse.cdt.codan.internal.core.cfg;
 
-import java.util.ArrayList;
-import java.util.Collection;
 import java.util.Collections;
 import java.util.Iterator;
-import java.util.List;
-
 import org.eclipse.cdt.codan.provisional.core.model.cfg.IBasicBlock;
 import org.eclipse.cdt.codan.provisional.core.model.cfg.IStartNode;
 
 /**
- * Start node has no prev, one jump and it is connect to function exits
- *
+ * Start node has no incoming, one outgoing and it is connect to function exits
+ * 
  */
-public class StartNode extends AbstarctBasicBlock implements IStartNode {
-	private IBasicBlock next;
-	private List<IBasicBlock> exitNodes;
-
-	public StartNode(IBasicBlock next, Collection<IBasicBlock> exitNodes) {
-		super();
-		this.next = next;
-		if (exitNodes != null) this.exitNodes = Collections.unmodifiableList(new ArrayList<IBasicBlock>(exitNodes));
-		else this.exitNodes = null; // incomplete node
+public class StartNode extends AbstractSingleOutgoingNode implements IStartNode {
+	public StartNode(IBasicBlock next) {
+		super(next);
 	}
 
 	@SuppressWarnings("unchecked")
@@ -29,37 +19,12 @@ public class StartNode extends AbstarctBasicBlock implements IStartNode {
 		return Collections.EMPTY_LIST.iterator();
 	}
 
-	public Iterator<IBasicBlock> getOutgoingIterator() {
-		return new OneElementIterator<IBasicBlock>(next);
-	}
-
 	public int getIncomingSize() {
 		return 0;
 	}
 
-	public int getOutgoingSize() {
-		return 1;
-	}
-
-	public IBasicBlock getOutgoing() {
-		return next;
-	}
-
-	public Iterator<IBasicBlock> getExitNodeIterator() {
-		return exitNodes.iterator();
-	}
-
-	public int getExitNodeSize() {
-		return exitNodes.size();
-	}
-
-	public void setOutgoing(IBasicBlock next) {
-		if (this.next != null) throw new IllegalArgumentException("Cannot modify already exiting connector"); //$NON-NLS-1$
-		this.next = next;
-	}
-
-	public void setExitNodes(Collection<IBasicBlock> exitNodes) {
-		if (this.exitNodes != null) throw new IllegalArgumentException("Cannot modify already exiting connector"); //$NON-NLS-1$
-		this.exitNodes = Collections.unmodifiableList(new ArrayList<IBasicBlock>(exitNodes));
+	@Override
+	public void addOutgoing(IBasicBlock node) {
+		setOutgoing(node);
 	}
 }

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/provisional/core/model/cfg/IBasicBlock.java

@@ -2,6 +2,15 @@ package org.eclipse.cdt.codan.provisional.core.model.cfg;
 
 import java.util.Iterator;
 
+/**
+ * 
+ * Control flow graph basic block node - superinterface of all nodes. Each node
+ * has iterator and size over incoming and outgoing arc
+ * <p/>
+ * The following are speciazed versions of the nodes:
+ * <li>{@link IStartNode} - start node of the graph
+ * <li>{@link I}
+ */
 public interface IBasicBlock {
 	Iterator<IBasicBlock> getIncomingIterator();
 
@@ -10,5 +19,4 @@ public interface IBasicBlock {
 	int getIncomingSize();
 
 	int getOutgoingSize();
-
 }

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/provisional/core/model/cfg/IConnectorNode.java

@@ -1,5 +1,5 @@
 package org.eclipse.cdt.codan.provisional.core.model.cfg;
 
-public interface IConnectorNode extends IBasicBlock {
 
+public interface IConnectorNode extends IBasicBlock, ISingleOutgoing {
 }

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/provisional/core/model/cfg/IControlFlowGraph.java

@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.provisional.core.model.cfg;
+
+import java.util.Iterator;
+
+/**
+ * TODO: add description
+ */
+public interface IControlFlowGraph {
+	IStartNode getStartNode();
+
+	/**
+	 * 
+	 * @return
+	 */
+	Iterator<IExitNode> getExitNodeIterator();
+
+	int getExitNodeSize();
+
+	Iterator<IBasicBlock> getUnconnectedNodeIterator();
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/provisional/core/model/cfg/IDecisionArc.java

@@ -1,5 +1,31 @@
 package org.eclipse.cdt.codan.provisional.core.model.cfg;
 
-public interface IDecisionArc {
+/**
+ * Arc that has a condition upon it, for example if branches have true/false
+ * condition, and switch branches have case condition
+ */
+public interface IDecisionArc extends ISingleOutgoing {
+	/**
+	 * Index represent branch index in decision node, as well semantics: <br>
+	 * 0 - always a false (else) branch of if, and default branch for switch,
+	 * even if no code exists <br>
+	 * 1 - is true (then) branch for if
+	 * 
+	 * @return
+	 */
+	int getIndex();
 
+	/**
+	 * Basic block that is at the end of the arc
+	 * 
+	 * @return
+	 */
+	IBasicBlock getOutgoing();
+
+	/**
+	 * Return parent node (decision node) or the decision arc
+	 * 
+	 * @return
+	 */
+	IDecisionNode getDecisionNode();
 }

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/provisional/core/model/cfg/IDecisionNode.java

@@ -1,5 +1,17 @@
 package org.eclipse.cdt.codan.provisional.core.model.cfg;
 
-public interface IDecisionNode extends IBasicBlock {
+import java.util.Iterator;
 
+/**
+ * 
+ * Interface for decision node. This node represent condition node in the graph,
+ * it has one incoming arc and many outgoing, each of them has a value of
+ * condition associated with it.
+ */
+public interface IDecisionNode extends IBasicBlock, ISingleIncoming {
+	Iterator<IDecisionArc> getDecisionArcs();
+
+	int getDecisionArcSize();
+
+	IConnectorNode getConnectionNode();
 }

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/provisional/core/model/cfg/IExitNode.java

@@ -0,0 +1,20 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.provisional.core.model.cfg;
+
+/**
+ * Exit node of the graph. Usually return from the function, can also be throw
+ * or abort, such at exit(0) call.
+ * 
+ */
+public interface IExitNode extends IBasicBlock, ISingleIncoming {
+	IStartNode getStartNode();
+}

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/provisional/core/model/cfg/IPlainNode.java

@@ -1,5 +1,5 @@
 package org.eclipse.cdt.codan.provisional.core.model.cfg;
 
-public interface IPlainNode extends IBasicBlock, ISingleOutgoing, ISingleIncoming {
-
+public interface IPlainNode extends IBasicBlock, ISingleOutgoing,
+		ISingleIncoming {
 }

codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/provisional/core/model/cfg/IStartNode.java

@@ -1,9 +1,10 @@
 package org.eclipse.cdt.codan.provisional.core.model.cfg;
 
-import java.util.Iterator;
 
+/**
+ * Start node of the control flow graph. Each graph has only one start node. It
+ * has no incoming arcs and one outgoing arc. It also contains iterator for
+ * function exit nodes.
+ */
 public interface IStartNode extends IBasicBlock, ISingleOutgoing {
-	Iterator<IBasicBlock> getExitNodeIterator();
-
-	int getExitNodeSize();
 }