import eclipse core compiler plugin (version 3.0.1)

[org.ibex.tool.git] / src / java / org / eclipse / jdt / internal / compiler / ast / EmptyStatement.java

diff --git a/src/java/org/eclipse/jdt/internal/compiler/ast/EmptyStatement.java b/src/java/org/eclipse/jdt/internal/compiler/ast/EmptyStatement.java
new file mode 100644 (file)
index 0000000..bd570e6
--- /dev/null
+++ b/src/java/org/eclipse/jdt/internal/compiler/ast/EmptyStatement.java
@@ -0,0 +1,64 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 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 org.eclipse.jdt.internal.compiler.ast;
+
+import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
+import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
+import org.eclipse.jdt.internal.compiler.codegen.CodeStream;
+import org.eclipse.jdt.internal.compiler.flow.FlowContext;
+import org.eclipse.jdt.internal.compiler.flow.FlowInfo;
+import org.eclipse.jdt.internal.compiler.ASTVisitor;
+
+public class EmptyStatement extends Statement {
+
+       public EmptyStatement(int startPosition, int endPosition) {
+               this.sourceStart = startPosition;
+               this.sourceEnd = endPosition;
+       }
+
+       public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
+               return flowInfo;
+       }
+
+       // Report an error if necessary
+       public boolean complainIfUnreachable(FlowInfo flowInfo, BlockScope scope, boolean didAlreadyComplain) {
+               
+               // before 1.4, empty statements are tolerated anywhere
+               if (scope.environment().options.complianceLevel < ClassFileConstants.JDK1_4) {
+                       return false;
+               }
+               return super.complainIfUnreachable(flowInfo, scope, didAlreadyComplain);
+       }
+       
+       public void generateCode(BlockScope currentScope, CodeStream codeStream){
+               // no bytecode, no need to check for reachability or recording source positions
+       }
+       
+       public StringBuffer printStatement(int tab, StringBuffer output) {
+               return printIndent(tab, output).append(';');
+       }
+               
+       public void resolve(BlockScope scope) {
+               if ((bits & IsUsefulEmptyStatementMASK) == 0) {
+                       scope.problemReporter().superfluousSemicolon(this.sourceStart, this.sourceEnd);
+               } else {
+                       scope.problemReporter().emptyControlFlowStatement(this.sourceStart, this.sourceEnd);
+               }
+       }
+
+       public void traverse(ASTVisitor visitor, BlockScope scope) {
+               visitor.visit(this, scope);
+               visitor.endVisit(this, scope);
+       }
+       
+
+}
+