Some minor changes

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / ReturnStatement.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ReturnStatement.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ReturnStatement.java
index a30be75..61e5cec 100644 (file)
--- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ReturnStatement.java
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ReturnStatement.java
@@ -1,17 +1,14 @@
 package net.sourceforge.phpdt.internal.compiler.ast;
 
-import net.sourceforge.phpdt.internal.compiler.ast.declarations.VariableUsage;
-
 import java.util.List;
-import java.util.ArrayList;
 
 /**
  * A return statement.
  * @author Matthieu Casanova
  */
-public class ReturnStatement extends Statement {
+public final class ReturnStatement extends Statement {
 
-  public Expression expression;
+  private final Expression expression;
 
   public ReturnStatement(final Expression expression, final int sourceStart, final int sourceEnd) {
     super(sourceStart, sourceEnd);
@@ -26,27 +23,32 @@ public class ReturnStatement extends Statement {
     return s + "return " + expression.toStringExpression();//$NON-NLS-1$
   }
 
-    /**
+  /**
    * Get the variables from outside (parameters, globals ...)
-   * @return the variables from outside
+   *
+   * @param list the list where we will put variables
    */
-  public List getOutsideVariable() {
-    return new ArrayList();
-  }
+  public void getOutsideVariable(final List list) {}
 
   /**
    * get the modified variables.
-   * @return the variables modified
+   *
+   * @param list the list where we will put variables
    */
-  public List getModifiedVariable() {
-    return expression.getModifiedVariable();
+  public void getModifiedVariable(final List list) {
+    if (expression != null) {
+      expression.getModifiedVariable(list);
+    }
   }
 
   /**
    * Get the variables used.
-   * @return the variables used
+   *
+   * @param list the list where we will put variables
    */
-  public List getUsedVariable() {
-    return expression.getUsedVariable();
+  public void getUsedVariable(final List list) {
+    if (expression != null) {
+        expression.getUsedVariable(list);
+    }
   }
 }