X-Git-Url: http://git.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Literal.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Literal.java
index 72571ba..9ab2ad8 100644
--- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Literal.java
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Literal.java
@@ -1,5 +1,8 @@
 package net.sourceforge.phpdt.internal.compiler.ast;
 
+import java.util.List;
+import java.util.ArrayList;
+
 /**
  * Here is the Superclass of the Literal expressions.
  * @author Matthieu Casanova
@@ -11,9 +14,33 @@ public abstract class Literal extends Expression {
    * @param sourceStart starting offset
    * @param sourceEnd ending offset
    */
-  public Literal(int sourceStart, int sourceEnd) {
+  public Literal(final int sourceStart, final int sourceEnd) {
     super(sourceStart, sourceEnd);
   }
 
   public abstract char[] source();
+
+  /**
+   * Get the variables from outside (parameters, globals ...)
+   * @return an empty list
+   */
+  public List getOutsideVariable() {
+    return new ArrayList();
+  }
+
+  /**
+   * get the modified variables.
+   * @return an empty list
+   */
+  public List getModifiedVariable() {
+    return new ArrayList();
+  }
+
+  /**
+   * Get the variables used.
+   * @return an empty list
+   */
+  public List getUsedVariable() {
+    return new ArrayList();
+  }
 }