first scanner /parser copied from the jdt java version

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/flow/InitializationFlowContext.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/flow/InitializationFlowContext.java
new file mode 100644 (file)
index 0000000..b5a4b2b
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/flow/InitializationFlowContext.java
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * 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;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.ReferenceBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
+
+/**
+ * Reflects the context of code analysis, keeping track of enclosing
+ *     try statements, exception handlers, etc...
+ */
+public class InitializationFlowContext extends ExceptionHandlingFlowContext {
+
+       public int exceptionCount;
+       public TypeBinding[] thrownExceptions = new TypeBinding[5];
+       public AstNode[] exceptionThrowers = new AstNode[5];
+       public FlowInfo[] exceptionThrowerFlowInfos = new FlowInfo[5];
+
+       public InitializationFlowContext(
+               FlowContext parent,
+               AstNode associatedNode,
+               BlockScope scope) {
+               super(
+                       parent,
+                       associatedNode,
+                       new ReferenceBinding[] { scope.getJavaLangThrowable()},
+               // tolerate any kind of exception, but record them
+               scope, FlowInfo.DeadEnd);
+       }
+
+       public void checkInitializerExceptions(
+               BlockScope currentScope,
+               FlowContext initializerContext,
+               FlowInfo flowInfo) {
+               for (int i = 0; i < exceptionCount; i++) {
+                       initializerContext.checkExceptionHandlers(
+                               thrownExceptions[i],
+                               exceptionThrowers[i],
+                               exceptionThrowerFlowInfos[i],
+                               currentScope);
+               }
+       }
+
+       public void recordHandlingException(
+               ReferenceBinding exceptionType,
+               UnconditionalFlowInfo flowInfo,
+               TypeBinding raisedException,
+               AstNode invocationSite,
+               boolean wasMasked) {
+                       
+               int size = thrownExceptions.length;
+               if (exceptionCount == size) {
+                       System.arraycopy(
+                               thrownExceptions,
+                               0,
+                               (thrownExceptions = new TypeBinding[size * 2]),
+                               0,
+                               size);
+                       System.arraycopy(
+                               exceptionThrowers,
+                               0,
+                               (exceptionThrowers = new AstNode[size * 2]),
+                               0,
+                               size);
+                       System.arraycopy(
+                               exceptionThrowerFlowInfos,
+                               0,
+                               (exceptionThrowerFlowInfos = new FlowInfo[size * 2]),
+                               0,
+                               size);
+               }
+               thrownExceptions[exceptionCount] = raisedException;
+               exceptionThrowers[exceptionCount] = invocationSite;
+               exceptionThrowerFlowInfos[exceptionCount++] = flowInfo.copy();
+       }       
+}
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