| /******************************************************************************* |
| * 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 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.flow; |
| |
| import org.eclipse.jdt.internal.compiler.ast.ASTNode; |
| import org.eclipse.jdt.internal.compiler.ast.SubRoutineStatement; |
| |
| /** |
| * Reflects the context of code analysis, keeping track of enclosing |
| * try statements, exception handlers, etc... |
| */ |
| public class InsideSubRoutineFlowContext extends FlowContext { |
| |
| public UnconditionalFlowInfo initsOnReturn; |
| |
| public InsideSubRoutineFlowContext( |
| FlowContext parent, |
| ASTNode associatedNode) { |
| super(parent, associatedNode); |
| this.initsOnReturn = FlowInfo.DEAD_END; |
| } |
| |
| public String individualToString() { |
| |
| StringBuffer buffer = new StringBuffer("Inside SubRoutine flow context"); //$NON-NLS-1$ |
| buffer.append("[initsOnReturn -").append(initsOnReturn.toString()).append(']'); //$NON-NLS-1$ |
| return buffer.toString(); |
| } |
| |
| public UnconditionalFlowInfo initsOnReturn(){ |
| return this.initsOnReturn; |
| } |
| |
| public boolean isNonReturningContext() { |
| return subRoutine().isSubRoutineEscaping(); |
| } |
| |
| public SubRoutineStatement subRoutine() { |
| return (SubRoutineStatement)associatedNode; |
| } |
| |
| public void recordReturnFrom(FlowInfo flowInfo) { |
| |
| if (!flowInfo.isReachable()) return; |
| if (initsOnReturn == FlowInfo.DEAD_END) { |
| initsOnReturn = flowInfo.copy().unconditionalInits(); |
| } else { |
| initsOnReturn = initsOnReturn.mergedWith(flowInfo.copy().unconditionalInits()); |
| } |
| } |
| } |