Some minor changes

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/NullLiteral.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/NullLiteral.java
index 3010590..23f88d3 100644 (file)
--- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/NullLiteral.java
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/NullLiteral.java
@@ -1,52 +1,21 @@
-/*******************************************************************************
- * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
- * All rights reserved. This program and the accompanying materials 
- * are made available under the terms of the Common Public License v0.5 
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v05.html
- * 
- * Contributors:
- *     IBM Corporation - initial API and implementation
- ******************************************************************************/
 package net.sourceforge.phpdt.internal.compiler.ast;
 
-import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
-import net.sourceforge.phpdt.internal.compiler.impl.*;
-import net.sourceforge.phpdt.internal.compiler.codegen.*;
-import net.sourceforge.phpdt.internal.compiler.lookup.*;
+import test.Token;
 
-public class NullLiteral extends MagicLiteral {
-       static final char[] source = {'n' , 'u' , 'l' , 'l'};
-public NullLiteral(int s , int e) {
-       super(s,e);
-}
-public void computeConstant() {
-
-       constant = Constant.fromValue(null);}
-/**
- * Code generation for the null literal
- *
- * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
- * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
- * @param valueRequired boolean
- */ 
-public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
-       int pc = codeStream.position;
-       if (valueRequired)
-               codeStream.aconst_null();
-       codeStream.recordPositionsFrom(pc, this.sourceStart);
-}
-public TypeBinding literalType(BlockScope scope) {
-       return NullBinding;
-}
 /**
- * 
+ * @author Matthieu Casanova
  */
-public char[] source() {
-       return source;
-}
-public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
-       visitor.visit(this, scope);
-       visitor.endVisit(this, scope);
-}
+public final class NullLiteral extends MagicLiteral {
+
+  public NullLiteral(final Token token) {
+    super(token.sourceStart, token.sourceEnd);
+  }
+
+  /**
+   * Return the expression as String.
+   * @return the expression
+   */
+  public String toStringExpression() {
+    return "null";
+  }
 }