1) Moved net.sourceforge.phpeclipse.ui\src\net\sourceforge\phpdt back to net.sourcefo...

[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 23f88d3..d158440 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
@@ -1,21 +1,63 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
 package net.sourceforge.phpdt.internal.compiler.ast;
 
-import test.Token;
+import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
 
-/**
- * @author Matthieu Casanova
- */
-public final class NullLiteral extends MagicLiteral {
+public class NullLiteral extends MagicLiteral {
 
-  public NullLiteral(final Token token) {
-    super(token.sourceStart, token.sourceEnd);
-  }
+       static final char[] source = { 'n', 'u', 'l', 'l' };
 
-  /**
-   * Return the expression as String.
-   * @return the expression
-   */
-  public String toStringExpression() {
-    return "null";
-  }
+       public NullLiteral(int s, int e) {
+
+               super(s, e);
+       }
+
+       public void computeConstant() {
+
+               constant = NotAConstant;
+       }
+
+       /**
+        * Code generation for the null literal
+        * 
+        * @param currentScope
+        *            net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
+        * @param codeStream
+        *            net.sourceforge.phpdt.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;
+       }
+
+       /**
+        * 
+        */
+       public char[] source() {
+               return source;
+       }
+
+       public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
+               visitor.visit(this, scope);
+               visitor.endVisit(this, scope);
+       }
 }