Gonna need that name before we try to load it

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@6122 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/tools/GenDObjectTask.java

@@ -29,6 +29,7 @@ import java.lang.reflect.Type;
 import java.util.ArrayList;
 
 import java.io.File;
+import java.io.IOException;
 import java.io.StringWriter;
 
 import org.apache.tools.ant.BuildException;
@@ -79,10 +80,14 @@ public class GenDObjectTask extends GenTask
     protected void processObject (File source)
     {
         // load up the file and determine it's package and classname
-        String name = null;
-        Class<?> klass = loadClass(name);
+        String name;
         try{
             name = GenUtil.readClassName(source);
+        } catch (IOException io) {
+            throw new BuildException("Couldn't read class name: " + source, io);
+        }
+        Class<?> klass = loadClass(name);
+        try {
             processObject(source, klass);
         } catch (Exception e) {
             throw new BuildException("Failed to process " + source.getName(), e);