org.eclipse.jdt.internal.compiler.ast.EmptyStatement Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-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 int complainIfUnreachable(FlowInfo flowInfo, BlockScope scope, int complaintLevel) {
// before 1.4, empty statements are tolerated anywhere
if (scope.compilerOptions().complianceLevel < ClassFileConstants.JDK1_4) {
return complaintLevel;
}
return super.complainIfUnreachable(flowInfo, scope, complaintLevel);
}
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 ((this.bits & IsUsefulEmptyStatement) == 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);
}
}