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diff --git a/sources/scalac/CompilationUnit.java b/sources/scalac/CompilationUnit.java
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+/*     ____ ____  ____ ____  ______                                     *\
+**    / __// __ \/ __// __ \/ ____/    SOcos COmpiles Scala             **
+**  __\_ \/ /_/ / /__/ /_/ /\_ \       (c) 2002, LAMP/EPFL              **
+** /_____/\____/\___/\____/____/                                        **
+**                                                                      **
+** $Id$
+\*                                                                      */
+
+package scalac;
+
+import scala.tools.util.Position;
+import scala.tools.util.SourceFile;
+
+import scalac.ast.Tree;
+import scalac.atree.ARepository;
+import scalac.util.FreshNameCreator;
+import java.util.HashMap;
+
+
+/** A representation for a compilation unit in scala
+ *
+ *  @author     Matthias Zenger
+ *  @version    1.0
+ */
+public class CompilationUnit {
+
+    /** the global compilation environment
+     */
+    public final Global global;
+
+    /** the associated source code file
+     */
+    public final SourceFile source;
+
+    /** does this unit come from the interpreter console
+     */
+    public final boolean console;
+
+    /** is this unit only there for mixin expansion?
+     */
+    public final boolean mixinOnly;
+
+    /** the fresh name creator
+     */
+    public final FreshNameCreator fresh;
+
+    /** the content of the compilation unit in tree form
+     */
+    public Tree[] body;
+    public ARepository repository;
+
+    public CompilationUnit(Global global, SourceFile source,
+		boolean console, boolean mixinOnly) {
+        this.global = global;
+        this.source = source;
+        this.console = console;
+	this.mixinOnly = mixinOnly;
+        this.fresh = new FreshNameCreator();
+    }
+
+    public CompilationUnit(Global global, SourceFile source, boolean console) {
+	this(global, source, console, false);
+    }
+
+    /** return the position representing the given encoded position
+     */
+    public Position position(int pos) {
+        return new Position(source, pos);
+    }
+
+    /** issue an error in this compilation unit at a specific location
+     */
+    public void error(int pos, String message) {
+        global.reporter.error(position(pos), message);
+    }
+
+    /** issue a warning in this compilation unit at a specific location
+     */
+    public void warning(int pos, String message) {
+        global.reporter.warning(position(pos), message);
+    }
+
+    /** return a string representation
+     */
+    public String toString() {
+        return source.toString();
+    }
+
+}