Initial commit: New file.

* .gitignore: New file.
* org.eclipse.cdt.codan.checkers.ui/.classpath: New file.
* org.eclipse.cdt.codan.checkers.ui/.project: New file.
* org.eclipse.cdt.codan.checkers.ui/.settings/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/.settings/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/.settings/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/.settings/org.eclipse.jdt.core.prefs: New file.
* org.eclipse.cdt.codan.checkers.ui/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/CVS/Template: New file.
* org.eclipse.cdt.codan.checkers.ui/META-INF/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/META-INF/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/META-INF/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/META-INF/MANIFEST.MF: New file.
* org.eclipse.cdt.codan.checkers.ui/build.properties: New file.
* org.eclipse.cdt.codan.checkers.ui/plugin.xml: New file.
* org.eclipse.cdt.codan.checkers.ui/src/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/src/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/src/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/CheckersUiActivator.java: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/quickfix/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/quickfix/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/quickfix/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/quickfix/CodanProblemMarkerResolutionGenerator.java: New file.
* org.eclipse.cdt.codan.checkers.ui/src/org/eclipse/cdt/codan/checkers/ui/quickfix/QuickFixAssignmentInCondition.java: New file.
* org.eclipse.cdt.codan.checkers/.classpath: New file.
* org.eclipse.cdt.codan.checkers/.project: New file.
* org.eclipse.cdt.codan.checkers/.settings/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/.settings/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/.settings/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/.settings/org.eclipse.jdt.core.prefs: New file.
* org.eclipse.cdt.codan.checkers/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/CVS/Template: New file.
* org.eclipse.cdt.codan.checkers/META-INF/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/META-INF/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/META-INF/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/META-INF/MANIFEST.MF: New file.
* org.eclipse.cdt.codan.checkers/build.properties: New file.
* org.eclipse.cdt.codan.checkers/plugin.xml: New file.
* org.eclipse.cdt.codan.checkers/src/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/src/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/src/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/src/org/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/src/org/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/src/org/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/Activator.java: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/CloseOpenedFilesChecker.java: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/AssignmentInConditionChecker.java: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/CVS/Entries: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/CVS/Repository: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/CVS/Root: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/NonVirtualDestructor.java: New file.
* org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/StatementHasNoEffectChecker.java: New file.
* org.eclipse.cdt.codan.core/.classpath: New file.
* org.eclipse.cdt.codan.core/.project: New file.
* org.eclipse.cdt.codan.core/.settings/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/.settings/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/.settings/CVS/Root: New file.
* org.eclipse.cdt.codan.core/.settings/org.eclipse.jdt.core.prefs: New file.
* org.eclipse.cdt.codan.core/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/CVS/Root: New file.
* org.eclipse.cdt.codan.core/CVS/Template: New file.
* org.eclipse.cdt.codan.core/META-INF/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/META-INF/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/META-INF/CVS/Root: New file.
* org.eclipse.cdt.codan.core/META-INF/MANIFEST.MF: New file.
* org.eclipse.cdt.codan.core/build.properties: New file.
* org.eclipse.cdt.codan.core/plugin.xml: New file.
* org.eclipse.cdt.codan.core/schema/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/schema/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/schema/CVS/Root: New file.
* org.eclipse.cdt.codan.core/schema/checkers.exsd: New file.
* org.eclipse.cdt.codan.core/src/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/CodanApplication.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/CodanCorePlugin.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/CodanPreferencesLoader.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/CodanRuntime.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/PreferenceConstants.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/AbstractChecker.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/AbstractIndexAstChecker.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CodanSeverity.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICAstChecker.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IChecker.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICheckersRegistry.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICodanAstReconciler.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICodanBuilder.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblem.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemCategory.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemElement.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemLocation.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemProfile.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemReporter.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ProblemLocation.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ProblemProfile.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/CheckersRegisry.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/CodanBuilder.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/CodeAnlysisNature.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/model/CVS/Entries: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/model/CVS/Repository: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/model/CVS/Root: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/model/CodanMarkerProblemReporter.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/model/CodanProblem.java: New file.
* org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/internal/core/model/CodanProblemCategory.java: New file.
* org.eclipse.cdt.codan.ui/.classpath: New file.
* org.eclipse.cdt.codan.ui/.project: New file.
* org.eclipse.cdt.codan.ui/.settings/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/.settings/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/.settings/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/.settings/org.eclipse.jdt.core.prefs: New file.
* org.eclipse.cdt.codan.ui/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/CVS/Template: New file.
* org.eclipse.cdt.codan.ui/META-INF/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/META-INF/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/META-INF/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/META-INF/MANIFEST.MF: New file.
* org.eclipse.cdt.codan.ui/build.properties: New file.
* org.eclipse.cdt.codan.ui/plugin.xml: New file.
* org.eclipse.cdt.codan.ui/src/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/BuildPropertyPage.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/CheckedTreeEditor.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/CodanPreferencePage.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/FieldEditorOverlayPage.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/Messages.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/Messages.properties: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/PreferenceInitializer.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/preferences/ProblemsTreeEditor.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/Activator.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/CodanCReconciler.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/Startup.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/actions/CVS/Entries: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/actions/CVS/Repository: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/actions/CVS/Root: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/actions/RunCodeAnalysis.java: New file.
* org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/ui/actions/ToggleNatureAction.java: New file.

19 files changed, 823 insertions, 0 deletions

diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/AbstractChecker.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/AbstractChecker.java
new file mode 100644
index 0000000..f1e5028
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/AbstractChecker.java
@@ -0,0 +1,76 @@
+/*******************************************************************************
+ * 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.model;
+
+import org.eclipse.cdt.codan.core.CodanRuntime;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.IResource;
+
+public abstract class AbstractChecker implements IChecker {
+	protected String name;
+
+	public AbstractChecker() {
+	}
+
+	/**
+	 * @return true if checker is enabled in context of resource, if returns
+	 *         false checker's "processResource" method won't be called
+	 */
+	public boolean enabledInContext(IResource res) {
+		return true;
+	}
+
+	/**
+	 * Reports a simple problem for given file and line
+	 * 
+	 * @param id
+	 *            - problem id
+	 * @param file
+	 *            - file
+	 * @param lineNumber
+	 *            - line
+	 * @param arg
+	 *            - problem argument, if problem does not define error message
+	 *            it will be error message (not recommended because of
+	 *            internationalization)
+	 */
+	public void reportProblem(String id, IFile file, int lineNumber, String arg) {
+		getProblemReporter().reportProblem(id,
+				new ProblemLocation(file, lineNumber), arg);
+	}
+
+	/**
+	 * Reports a simple problem for given file and line, error message comes
+	 * from problem definition
+	 * 
+	 * @param id
+	 *            - problem id
+	 * @param file
+	 *            - file
+	 * @param lineNumber
+	 *            - line
+	 */
+	public void reportProblem(String id, IFile file, int lineNumber) {
+		getProblemReporter().reportProblem(id,
+				new ProblemLocation(file, lineNumber), new Object[] {});
+	}
+
+	/**
+	 * @return problem reporter for given checker
+	 */
+	protected IProblemReporter getProblemReporter() {
+		return CodanRuntime.getInstance().getProblemReporter();
+	}
+
+	public boolean runInEditor() {
+		return false;
+	}
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/AbstractIndexAstChecker.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/AbstractIndexAstChecker.java
new file mode 100644
index 0000000..2c87b07
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/AbstractIndexAstChecker.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.model;
+
+import org.eclipse.cdt.codan.core.CodanCorePlugin;
+import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.dom.ast.IASTFileLocation;
+import org.eclipse.cdt.core.dom.ast.IASTNode;
+import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
+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.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.Path;
+
+/**
+ * @author Alena
+ * 
+ */
+public abstract class AbstractIndexAstChecker extends AbstractChecker implements
+		ICAstChecker {
+	private IFile file;
+
+	protected IFile getFile() {
+		return file;
+	}
+
+	void processFile(IFile file) throws CoreException, InterruptedException {
+		// create translation unit and access index
+		ICElement model = CoreModel.getDefault().create(file);
+		if (!(model instanceof ITranslationUnit))
+			return;
+		ITranslationUnit tu = (ITranslationUnit) model;
+		if (tu == null)
+			return; // not a C/C++ file
+		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.
+			this.file = file;
+			processAst(ast);
+		} finally {
+			this.file = null;
+			index.releaseReadLock();
+		}
+	}
+
+	public boolean processResource(IResource resource) {
+		if (resource instanceof IFile) {
+			IFile file = (IFile) resource;
+			try {
+				processFile(file);
+			} catch (CoreException e) {
+				CodanCorePlugin.log(e);
+			} catch (InterruptedException e) {
+				// ignore
+			}
+			return false;
+		}
+		return true;
+	}
+
+	public void reportProblem(String id, IASTNode astNode, String message) {
+		IASTFileLocation astLocation = astNode.getFileLocation();
+		IPath location = new Path(astLocation.getFileName());
+		IFile astFile = ResourcesPlugin.getWorkspace().getRoot()
+				.getFileForLocation(location);
+		if (astFile == null) {
+			astFile = file;
+		}
+		getProblemReporter().reportProblem(
+				id,
+				new ProblemLocation(astFile, astLocation
+						.getStartingLineNumber()), message);
+	}
+
+	public boolean runInEditor() {
+		return true;
+	}
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Entries b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Entries
new file mode 100644
index 0000000..9043127
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Entries
@@ -0,0 +1,16 @@
+/AbstractChecker.java/1.4/Sat Aug 22 21:31:29 2009//
+/AbstractIndexAstChecker.java/1.5/Sat Aug 22 21:31:29 2009//
+/CodanSeverity.java/1.2/Wed Apr 22 01:26:56 2009//
+/ICAstChecker.java/1.1/Thu Apr  9 12:46:50 2009//
+/IChecker.java/1.2/Sat Aug 22 21:31:29 2009//
+/ICheckersRegistry.java/1.1/Sat Aug 22 21:16:48 2009//
+/ICodanAstReconciler.java/1.1/Sat Aug 22 21:16:48 2009//
+/ICodanBuilder.java/1.1/Sat Aug 22 21:16:48 2009//
+/IProblem.java/1.3/Sat Aug 22 21:16:48 2009//
+/IProblemCategory.java/1.2/Thu Apr 16 01:46:57 2009//
+/IProblemElement.java/1.1/Thu Apr 16 01:46:57 2009//
+/IProblemLocation.java/1.1/Sat Aug 22 21:16:48 2009//
+/IProblemProfile.java/1.3/Sat May  9 01:54:38 2009//
+/IProblemReporter.java/1.1/Sat Aug 22 21:16:48 2009//
+/ProblemLocation.java/1.1/Sat Aug 22 21:16:48 2009//
+/ProblemProfile.java/1.4/Sat Aug 22 21:16:48 2009//
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Repository b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Repository
new file mode 100644
index 0000000..48894f7
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Repository
@@ -0,0 +1 @@
+org.eclipse.cdt/codan/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Root b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Root
new file mode 100644
index 0000000..04efa23
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@dev.eclipse.org:/cvsroot/tools
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CodanSeverity.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CodanSeverity.java
new file mode 100644
index 0000000..acfa4d1
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/CodanSeverity.java
@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * 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.model;
+
+import org.eclipse.core.resources.IMarker;
+
+public enum CodanSeverity {
+	Info(IMarker.SEVERITY_INFO), Warning(IMarker.SEVERITY_WARNING), Error(
+			IMarker.SEVERITY_ERROR);
+	private int value;
+
+	private CodanSeverity(int value) {
+		this.value = value;
+	}
+
+	public int intValue() {
+		return value;
+	}
+
+	/**
+	 * @return
+	 */
+	public static String[] stringValues() {
+		CodanSeverity[] values = values();
+		String[] svalues = new String[values.length];
+		for (int i = 0; i < values.length; i++) {
+			CodanSeverity sev = values[i];
+			svalues[i] = sev.toString();
+		}
+		return svalues;
+	}
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICAstChecker.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICAstChecker.java
new file mode 100644
index 0000000..461c0fa
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICAstChecker.java
@@ -0,0 +1,21 @@
+/*******************************************************************************
+ * 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.model;
+
+import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
+
+/**
+ * @author Alena
+ * 
+ */
+public interface ICAstChecker extends IChecker {
+	void processAst(IASTTranslationUnit ast);
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IChecker.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IChecker.java
new file mode 100644
index 0000000..4f995db
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IChecker.java
@@ -0,0 +1,28 @@
+/*******************************************************************************
+ * 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.model;
+
+import org.eclipse.core.resources.IResource;
+
+public interface IChecker {
+	public boolean processResource(IResource resource);
+
+	boolean enabledInContext(IResource resource);
+
+	/**
+	 * Checker must implement this method to determine if it can run in editor
+	 * "as you type", checker must be really light weight to run in this mode
+	 * 
+	 * @return true if need to be run in editor as user types, and false
+	 *         otherwise
+	 */
+	boolean runInEditor();
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICheckersRegistry.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICheckersRegistry.java
new file mode 100644
index 0000000..052d868
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICheckersRegistry.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.model;
+
+import java.util.Iterator;
+
+import org.eclipse.core.resources.IResource;
+
+/**
+ * @author Alena
+ * 
+ */
+public interface ICheckersRegistry {
+	public abstract Iterator<IChecker> iterator();
+
+	public abstract void addChecker(IChecker checker);
+
+	public abstract void addProblem(IProblem p, String category);
+
+	public abstract void addCategory(IProblemCategory p, String category);
+
+	public abstract void addRefProblem(IChecker c, IProblem p);
+
+	/**
+	 * @return
+	 */
+	public abstract IProblemProfile getDefaultProfile();
+
+	/**
+	 * @return
+	 */
+	public abstract IProblemProfile getWorkspaceProfile();
+
+	/**
+	 * @param element
+	 * @return
+	 */
+	public abstract IProblemProfile getResourceProfile(IResource element);
+
+	/**
+	 * @param element
+	 * @return
+	 */
+	public abstract IProblemProfile getResourceProfileWorkingCopy(
+			IResource element);
+
+	/**
+	 * Set profile for resource. This method is called by UI, and should not be
+	 * called by clients directly
+	 * 
+	 * @param resource
+	 *            - resource
+	 * @param profile
+	 *            - problems profile
+	 */
+	public abstract void updateProfile(IResource resource,
+			IProblemProfile profile);
+}
\ No newline at end of file
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICodanAstReconciler.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICodanAstReconciler.java
new file mode 100644
index 0000000..17bc8f7
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICodanAstReconciler.java
@@ -0,0 +1,22 @@
+/*******************************************************************************
+ * 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.model;
+
+import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
+import org.eclipse.core.runtime.IProgressMonitor;
+
+/**
+ * @author Alena
+ * 
+ */
+public interface ICodanAstReconciler {
+	public void reconcileAst(IASTTranslationUnit ast, IProgressMonitor monitor);
+}
\ No newline at end of file
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICodanBuilder.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICodanBuilder.java
new file mode 100644
index 0000000..ce1f668
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ICodanBuilder.java
@@ -0,0 +1,22 @@
+/*******************************************************************************
+ * 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.model;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.IProgressMonitor;
+
+/**
+ * @author Alena
+ * 
+ */
+public interface ICodanBuilder {
+	public void processResource(IResource resource, IProgressMonitor monitor);
+}
\ No newline at end of file
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblem.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblem.java
new file mode 100644
index 0000000..52cfff2
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblem.java
@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * 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.model;
+
+import java.util.Collection;
+
+public interface IProblem extends IProblemElement {
+	String getName();
+
+	String getId();
+
+	boolean isEnabled();
+
+	CodanSeverity getSeverity();
+
+	String getMessagePattern();
+
+	void setSeverity(CodanSeverity sev);
+
+	void setEnabled(boolean checked);
+
+	void setMessagePattern(String message);
+
+	public void setProperty(Object key, Object value);
+
+	public Object getProperty(Object key);
+
+	public Collection<Object> getPropertyKeys();
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemCategory.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemCategory.java
new file mode 100644
index 0000000..45a62a0
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemCategory.java
@@ -0,0 +1,31 @@
+/*******************************************************************************
+ * 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.model;
+
+public interface IProblemCategory extends IProblemElement {
+	String getName();
+
+	String getId();
+
+	Object[] getChildren();
+
+	/**
+	 * @param id
+	 * @return
+	 */
+	IProblem findProblem(String id);
+
+	/**
+	 * @param id
+	 * @return
+	 */
+	IProblemCategory findCategory(String id);
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemElement.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemElement.java
new file mode 100644
index 0000000..b9f7fb8
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemElement.java
@@ -0,0 +1,19 @@
+/*******************************************************************************
+ * 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.model;
+
+/**
+ * @author Alena
+ * 
+ */
+public interface IProblemElement extends Cloneable {
+	Object clone() throws CloneNotSupportedException;
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemLocation.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemLocation.java
new file mode 100644
index 0000000..f5e4f23
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemLocation.java
@@ -0,0 +1,54 @@
+/*******************************************************************************
+ * 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.model;
+
+import org.eclipse.core.resources.IFile;
+
+/**
+ * Interface to describe problem location. Usually contains file and linenumber,
+ * also supports character positions for sophisticated errors.
+ * 
+ */
+public interface IProblemLocation {
+	/**
+	 * 
+	 * @return File for the problem - absolute full paths
+	 */
+	IFile getFile();
+
+	/**
+	 * 
+	 * @return Primary line for the problem, lines start with 1 for file. If -1
+	 *         char position would be used.
+	 */
+	int getLineNumber();
+
+	/**
+	 * 
+	 * @return character position where problem starts within file, first char
+	 *         is 0, inclusive, tab count as one. If unknown return -1.
+	 */
+	int getStartingChar();
+
+	/**
+	 * 
+	 * @return character position where problem ends within file, first char is
+	 *         0, exclusive, tab count as one. If unknown return -1.
+	 */
+	int getEndingChar();
+
+	/**
+	 * 
+	 * @return extra data for problem location, checker specific, can be
+	 *         backtrace for example
+	 */
+	Object getData();
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemProfile.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemProfile.java
new file mode 100644
index 0000000..9dc465e
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemProfile.java
@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * 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.model;
+
+/**
+ * Problem Profile contains tree of categories and problems. Profiles can have
+ * different categories and different problems set, problems with the same id
+ * can have different severities/enablement in different profiles. To obtain
+ * profile use class {@link CheckersRegisry#getResourceProfile,
+ * CheckersRegisry#getDefaultProfile() or CheckersRegisry#getWorkspaceProfile()}
+ * .
+ * 
+ */
+public interface IProblemProfile extends IProblemElement {
+	/**
+	 * @return root category in profile
+	 */
+	IProblemCategory getRoot();
+
+	/**
+	 * Find and return problem by id
+	 * 
+	 * @param id
+	 *            - problem id
+	 * @return problem instance
+	 */
+	IProblem findProblem(String id);
+
+	/**
+	 * Find and return category by id
+	 * 
+	 * @param id
+	 *            - category id
+	 * @return category instance
+	 */
+	IProblemCategory findCategory(String id);
+
+	/**
+	 * Get all defined problems
+	 * 
+	 * @return array of problems defined in profile
+	 */
+	IProblem[] getProblems();
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemReporter.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemReporter.java
new file mode 100644
index 0000000..814cc40
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/IProblemReporter.java
@@ -0,0 +1,28 @@
+/*******************************************************************************
+ * 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.model;
+
+
+/**
+ * IProblemReporter - interface to report problems
+ *
+ */
+public interface IProblemReporter {
+	/**
+	 * Report a problem with "problemId" id on location determined by "loc", 
+	 * using problem specific error message customised by args.
+	 * @param problemId - id of the problem registers with checker
+	 * @param loc - location object
+	 * @param args - custom args, can be null, in this case default message is reported
+	 */
+	public void reportProblem(String problemId,  IProblemLocation loc,
+			Object ... args);
+}
\ No newline at end of file
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ProblemLocation.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ProblemLocation.java
new file mode 100644
index 0000000..ced12f0
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ProblemLocation.java
@@ -0,0 +1,109 @@
+/*******************************************************************************
+ * 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.model;
+
+import org.eclipse.core.resources.IFile;
+
+/**
+ * Implementation of IProblemLocation
+ * 
+ */
+public class ProblemLocation implements IProblemLocation {
+	protected IFile file;
+	protected int line;
+	protected int posStart;
+	protected int posEnd;
+	protected Object extra;
+
+	/**
+	 * @param file
+	 * @param line
+	 * @param lineEnd
+	 * @param posStart
+	 * @param posEnd
+	 */
+	public ProblemLocation(IFile file, int line) {
+		this.file = file;
+		this.line = line;
+		this.posStart = -1;
+		this.posEnd = -1;
+	}
+
+	/**
+	 * @param file
+	 * @param startingLineNumber
+	 * @param endingLineNumber
+	 */
+	public ProblemLocation(IFile file, int startChar, int endChar) {
+		this.file = file;
+		this.line = -1;
+		this.posStart = startChar;
+		this.posEnd = endChar;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.cdt.codan.core.model.IProblemLocation#getData()
+	 */
+	public Object getData() {
+		return extra;
+	}
+
+	public void setData(Object data) {
+		this.extra = data;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.cdt.codan.core.model.IProblemLocation#getFile()
+	 */
+	public IFile getFile() {
+		return file;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.cdt.codan.core.model.IProblemLocation#getLine()
+	 */
+	public int getLineNumber() {
+		return getStartingLineNumber();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.cdt.codan.core.model.IProblemLocation#getStartLine()
+	 */
+	public int getStartingLineNumber() {
+		return line;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.cdt.codan.core.model.IProblemLocation#getStartPos()
+	 */
+	public int getStartingChar() {
+		return posStart;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.cdt.codan.core.model.IProblemLocation#getEndingChar()
+	 */
+	public int getEndingChar() {
+		return posEnd;
+	}
+}
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ProblemProfile.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ProblemProfile.java
new file mode 100644
index 0000000..ae90e76
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/model/ProblemProfile.java
@@ -0,0 +1,103 @@
+/*******************************************************************************
+ * 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.model;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.eclipse.cdt.codan.internal.core.model.CodanProblemCategory;
+
+/**
+ * @author Alena
+ * 
+ */
+public class ProblemProfile implements IProblemProfile, Cloneable {
+	private IProblemCategory rootCategory = new CodanProblemCategory("root",
+			"root");
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see
+	 * org.eclipse.cdt.codan.core.model.IProblemProfile#getProblem(java.lang
+	 * .String)
+	 */
+	public IProblem findProblem(String id) {
+		return getRoot().findProblem(id);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.cdt.codan.core.model.IProblemProfile#getProblems()
+	 */
+	public IProblem[] getProblems() {
+		Collection<IProblem> problems = new ArrayList<IProblem>();
+		collectProblems(getRoot(), problems);
+		return problems.toArray(new IProblem[problems.size()]);
+	}
+
+	/**
+	 * @param root
+	 * @param problems
+	 */
+	protected void collectProblems(IProblemCategory parent,
+			Collection<IProblem> problems) {
+		Object[] children = parent.getChildren();
+		for (Object object : children) {
+			if (object instanceof IProblemCategory) {
+				IProblemCategory cat = (IProblemCategory) object;
+				collectProblems(cat, problems);
+			} else if (object instanceof IProblem) {
+				problems.add((IProblem) object);
+			}
+		}
+	}
+
+	public IProblemCategory getRoot() {
+		return rootCategory;
+	}
+
+	public void addProblem(IProblem p, IProblemCategory cat) {
+		if (cat == null)
+			cat = getRoot();
+		((CodanProblemCategory) cat).addChild(p);
+	}
+
+	public IProblemCategory findCategory(String id) {
+		return getRoot().findCategory(id);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see java.lang.Object#clone()
+	 */
+	@Override
+	public Object clone() {
+		try {
+			ProblemProfile clone = (ProblemProfile) super.clone();
+			clone.rootCategory = (IProblemCategory) ((CodanProblemCategory) this.rootCategory)
+					.clone();
+			return clone;
+		} catch (CloneNotSupportedException e) {
+			return this;
+		}
+	}
+
+	/**
+	 * @param p
+	 * @param cat
+	 */
+	public void addCategory(IProblemCategory category, IProblemCategory parent) {
+		((CodanProblemCategory) parent).addChild(category);
+	}
+}