first scanner /parser copied from the jdt java version

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/flow/InsideSubRoutineFlowContext.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/flow/InsideSubRoutineFlowContext.java
new file mode 100644 (file)
index 0000000..3ed888f
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/flow/InsideSubRoutineFlowContext.java
@@ -0,0 +1,42 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v0.5 
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v05.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ ******************************************************************************/
+package net.sourceforge.phpdt.internal.compiler.flow;
+
+import net.sourceforge.phpdt.internal.compiler.ast.AstNode;
+
+/**
+ * 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.DeadEnd;                          
+       }
+       
+       public boolean isNonReturningContext() {
+               return associatedNode.cannotReturn();
+       }
+       
+       public AstNode subRoutine() {
+               return associatedNode;
+       }
+       
+       public void recordReturnFrom(UnconditionalFlowInfo flowInfo) {
+               // record initializations which were performed at the return point
+               initsOnReturn = initsOnReturn.mergedWith(flowInfo);
+       }
+}
\ No newline at end of file