-/*******************************************************************************
- * 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.ast;
-import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
-import net.sourceforge.phpdt.internal.compiler.flow.*;
-import net.sourceforge.phpdt.internal.compiler.lookup.*;
-
+/**
+ * A break statement.
+ * @author Matthieu Casanova
+ */
public class Break extends BranchStatement {
-
- public Break(char[] label, int sourceStart, int e) {
- super(label, 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;
- if (label == null) {
- targetContext = flowContext.getTargetContextForDefaultBreak();
- } else {
- targetContext = flowContext.getTargetContextForBreakLabel(label);
- }
- if (targetContext == null) {
- if (label == null) {
- currentScope.problemReporter().invalidBreak(this);
- } else {
- currentScope.problemReporter().undefinedLabel(this); // need to improve
- }
- } else {
- targetLabel = targetContext.breakLabel();
- targetContext.recordBreakFrom(flowInfo);
- FlowContext traversedContext = flowContext;
- int subIndex = 0, maxSub = 5;
- subroutines = new AstNode[maxSub];
- while (true) {
- 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;
- }
- }
- // remember the initialization at this
- // point for dealing with blank final variables.
- traversedContext.recordReturnFrom(flowInfo.unconditionalInits());
-
- if (traversedContext == targetContext) {
- break;
- } else {
- traversedContext = traversedContext.parent;
- }
- }
- // resize subroutines
- if (subIndex != maxSub) {
- System.arraycopy(
- subroutines,
- 0,
- (subroutines = new AstNode[subIndex]),
- 0,
- subIndex);
- }
- }
- return FlowInfo.DeadEnd;
- }
-
- public String toString(int tab) {
-
- String s = tabString(tab);
- s = s + "break "; //$NON-NLS-1$
- if (label != null)
- s = s + new String(label);
- return s;
- }
-
- public void traverse(
- IAbstractSyntaxTreeVisitor visitor,
- BlockScope blockscope) {
+ public Break(final Expression expression, final int sourceStart, final int sourceEnd) {
+ super(expression, sourceStart, sourceEnd);
+ }
- visitor.visit(this, blockscope);
- visitor.endVisit(this, blockscope);
+ public String toString(final int tab) {
+ final String s = tabString(tab);
+ if (expression != null) {
+ return s + "break " + expression.toString();//$NON-NLS-1$
+ }
+ return s + "break";//$NON-NLS-1$
}
-}
\ No newline at end of file
+}