1 files changed, 80 insertions, 0 deletions
diff --git a/dsf/org.eclipse.cdt.examples.dsf.pda.ui/src/org/eclipse/cdt/examples/dsf/pda/ui/editor/WordFinder.java b/dsf/org.eclipse.cdt.examples.dsf.pda.ui/src/org/eclipse/cdt/examples/dsf/pda/ui/editor/WordFinder.java
new file mode 100644
index 00000000000..e67e1adfaaa
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+++ b/dsf/org.eclipse.cdt.examples.dsf.pda.ui/src/org/eclipse/cdt/examples/dsf/pda/ui/editor/WordFinder.java
@@ -0,0 +1,80 @@
+/*******************************************************************************
+ * Copyright (c) 2005, 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *     Bjorn Freeman-Benson - initial API and implementation
+ *     Wind River Systems - adopted to use with DSF
+ *******************************************************************************/
+package org.eclipse.cdt.examples.dsf.pda.ui.editor;
+
+ 
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.Region;
+
+/**
+ * Looks for an identifier in a source file
+ */
+public class WordFinder {
+	
+    /**
+     * Returns the region in the given document that contains an identifier, or
+     * <code>null</code> if none.
+     * 
+     * @param document document to search
+     * @param offset offset at which to look for an identifier
+     * @return region containing an identifier, or <code>null</code>
+     */
+	public static IRegion findWord(IDocument document, int offset) {
+		
+		int start= -1;
+		int end= -1;
+		
+		
+		try {
+			
+			int pos= offset;
+			char c;
+			
+			while (pos >= 0) {
+				c= document.getChar(pos);
+				if (!Character.isJavaIdentifierPart(c))
+					break;
+				--pos;
+			}
+			
+			start= pos;
+			
+			pos= offset;
+			int length= document.getLength();
+			
+			while (pos < length) {
+				c= document.getChar(pos);
+				if (!Character.isJavaIdentifierPart(c))
+					break;
+				++pos;
+			}
+			
+			end= pos;
+			
+		} catch (BadLocationException x) {
+		}
+		
+		if (start > -1 && end > -1) {
+			if (start == offset && end == offset)
+				return new Region(offset, 0);
+			else if (start == offset)
+				return new Region(start, end - start);
+			else
+				return new Region(start + 1, end - start - 1);
+		}
+		
+		return null;
+	}
+}