net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/flow/InsideSubRoutineFlowContext.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v0.5
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v05.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  ******************************************************************************/
  11 package net.sourceforge.phpdt.internal.compiler.flow;
  12
  13 import net.sourceforge.phpdt.internal.compiler.ast.AstNode;
  14
  15 /**
  16  * Reflects the context of code analysis, keeping track of enclosing
  17  *      try statements, exception handlers, etc...
  18  */
  19 public class InsideSubRoutineFlowContext extends FlowContext {
  20
  21         public UnconditionalFlowInfo initsOnReturn;
  22
  23         public InsideSubRoutineFlowContext(
  24                 FlowContext parent,
  25                 AstNode associatedNode) {
  26                 super(parent, associatedNode);
  27                 this.initsOnReturn = FlowInfo.DeadEnd;
  28         }
  29
  30         public boolean isNonReturningContext() {
  31                 return associatedNode.cannotReturn();
  32         }
  33
  34         public AstNode subRoutine() {
  35                 return associatedNode;
  36         }
  37
  38         public void recordReturnFrom(UnconditionalFlowInfo flowInfo) {
  39                 // record initializations which were performed at the return point
  40                 initsOnReturn = initsOnReturn.mergedWith(flowInfo);
  41         }
  42 }