Add a new method "resolveValue" to TaskContext that resolves values according to ant rules and using that particular context.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270513 13f79535-47bb-0310-9956-ffa450edef68

proposal/myrmidon/src/java/org/apache/myrmidon/api/TaskContext.java

@@ -60,6 +60,18 @@ public interface TaskContext
     File resolveFile( String filename )
         throws TaskException;
 
+    /**
+     * Resolve a value according to the context.
+     * This involves evaluating the string and thus removing
+     * ${} sequences according to the rules specified at
+     * ............
+     *
+     * @param value the value to resolve
+     * @return the resolved value
+     */
+    Object resolveValue( String value )
+        throws TaskException;
+
     /**
      * Retrieve property for name.
      *