Refactored packagename to net.sourceforge.phpdt.internal.compiler.ast

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / BreakStatement.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/BreakStatement.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/BreakStatement.java
new file mode 100644 (file)
index 0000000..a033e1e
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/BreakStatement.java
@@ -0,0 +1,103 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.compiler.ast;
+
+import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+
+public class BreakStatement extends BranchStatement {
+       
+       public BreakStatement(Expression expr, int sourceStart, int e) {
+               super(expr, sourceStart, e);
+       }
+
+       public FlowInfo analyseCode(
+               BlockScope currentScope,
+               FlowContext flowContext,
+               FlowInfo flowInfo) {
+
+               // here requires to generate a sequence of finally blocks invocations depending corresponding
+               // to each of the traversed try statements, so that execution will terminate properly.
+
+               // lookup the label, this should answer the returnContext
+//             FlowContext targetContext = (label == null) 
+//                     ? flowContext.getTargetContextForDefaultBreak()
+//                     : flowContext.getTargetContextForBreakLabel(label);
+//
+//             if (targetContext == null) {
+//                     if (label == null) {
+//                             currentScope.problemReporter().invalidBreak(this);
+//                     } else {
+//                             currentScope.problemReporter().undefinedLabel(this); 
+//                     }
+//                     return flowInfo; // pretend it did not break since no actual target
+//             }
+//             
+//             targetLabel = targetContext.breakLabel();
+//             FlowContext traversedContext = flowContext;
+//             int subIndex = 0, maxSub = 5;
+//             subroutines = new ASTNode[maxSub];
+//             
+//             do {
+//                     ASTNode sub;
+//                     if ((sub = traversedContext.subRoutine()) != null) {
+//                             if (subIndex == maxSub) {
+//                                     System.arraycopy(subroutines, 0, (subroutines = new ASTNode[maxSub*=2]), 0, subIndex); // grow
+//                             }
+//                             subroutines[subIndex++] = sub;
+//                             if (sub.cannotReturn()) {
+//                                     break;
+//                             }
+//                     }
+//                     traversedContext.recordReturnFrom(flowInfo.unconditionalInits());
+//
+//                     ASTNode node;
+//                     if ((node = traversedContext.associatedNode) instanceof TryStatement) {
+//                             TryStatement tryStatement = (TryStatement) node;
+//                             flowInfo.addInitializationsFrom(tryStatement.subRoutineInits); // collect inits                 
+//                     } else if (traversedContext == targetContext) {
+//                             // only record break info once accumulated through subroutines, and only against target context
+//                             targetContext.recordBreakFrom(flowInfo);
+//                             break;
+//                     }
+//             } while ((traversedContext = traversedContext.parent) != null);
+//             
+//             // resize subroutines
+//             if (subIndex != maxSub) {
+//                     System.arraycopy(subroutines, 0, (subroutines = new ASTNode[subIndex]), 0, subIndex);
+//             }
+               return FlowInfo.DEAD_END;
+       }
+       
+       public String toString(int tab) {
+
+               String s = tabString(tab);
+               s += "break "; //$NON-NLS-1$
+               if (expression != null)
+                       s += expression.toString();
+               return s;
+       }
+       public StringBuffer printStatement(int tab, StringBuffer output) {
+
+               printIndent(tab, output).append("break "); //$NON-NLS-1$
+               if (expression != null) output.append(expression);
+               return output.append(';');
+       }
+       public void traverse(
+               IAbstractSyntaxTreeVisitor visitor,
+               BlockScope blockscope) {
+
+               visitor.visit(this, blockscope);
+               visitor.endVisit(this, blockscope);
+       }
+}