-/*******************************************************************************
- * 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.codegen.CodeStream;
-import net.sourceforge.phpdt.internal.compiler.codegen.Label;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
-import net.sourceforge.phpdt.internal.compiler.flow.LabelFlowContext;
-import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import java.util.List;
+/**
+ * @author Matthieu Casanova
+ */
public class LabeledStatement extends Statement {
-
- public Statement statement;
- public char[] label;
- public Label targetLabel;
- // for local variables table attributes
- int mergedInitStateIndex = -1;
-
- /**
- * LabeledStatement constructor comment.
- */
- public LabeledStatement(char[] l, Statement st, int s, int e) {
-
- this.statement = st;
- this.label = l;
- this.sourceStart = s;
- this.sourceEnd = e;
- }
-
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
-
- // need to stack a context to store explicit label, answer inits in case of normal completion merged
- // with those relative to the exit path from break statement occurring inside the labeled statement.
- if (statement == null) {
- return flowInfo;
- } else {
- LabelFlowContext labelContext;
- FlowInfo mergedInfo =
- statement
- .analyseCode(
- currentScope,
- (labelContext =
- new LabelFlowContext(
- flowContext,
- this,
- label,
- (targetLabel = new Label()),
- currentScope)),
- flowInfo)
- .mergedWith(labelContext.initsOnBreak);
- mergedInitStateIndex =
- currentScope.methodScope().recordInitializationStates(mergedInfo);
- return mergedInfo;
- }
- }
-
- public AstNode concreteStatement() {
-
- return statement.concreteStatement();
- }
-
- /**
- * Code generation for labeled statement
- *
- * may not need actual source positions recording
- *
- * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
- * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
- */
- public void generateCode(BlockScope currentScope, CodeStream codeStream) {
-
- int pc = codeStream.position;
- if (targetLabel != null) {
- targetLabel.codeStream = codeStream;
- if (statement != null) {
- statement.generateCode(currentScope, codeStream);
- }
- targetLabel.place();
- }
- // May loose some local variable initializations : affecting the local variable attributes
- if (mergedInitStateIndex != -1) {
- codeStream.removeNotDefinitelyAssignedVariables(
- currentScope,
- mergedInitStateIndex);
- }
- codeStream.recordPositionsFrom(pc, this.sourceStart);
- }
-
- public void resolve(BlockScope scope) {
-
- statement.resolve(scope);
- }
-
- public String toString(int tab) {
-
- String s = tabString(tab);
- s += new String(label) + ": " + statement.toString(0); //$NON-NLS-1$
- return s;
- }
-
- public void traverse(
- IAbstractSyntaxTreeVisitor visitor,
- BlockScope blockScope) {
-
- if (visitor.visit(this, blockScope)) {
- statement.traverse(visitor, blockScope);
- }
- visitor.endVisit(this, blockScope);
- }
-
- public void resetStateForCodeGeneration() {
-
- this.targetLabel.resetStateForCodeGeneration();
- }
-}
\ No newline at end of file
+ public char[] label;
+
+ public Statement statement;
+
+ public LabeledStatement(final char[] label, final Statement statement, final int sourceStart, final int sourceEnd) {
+ super(sourceStart, sourceEnd);
+ this.label = label;
+ this.statement = statement;
+ }
+
+ /**
+ * Return the object into String.
+ * It should be overriden
+ * @return a String
+ */
+ public String toString() {
+ return new String(label) + statement.toString();
+ }
+
+ /**
+ * Return the object into String.
+ * @param tab how many tabs (not used here
+ * @return a String
+ */
+ public String toString(final int tab) {
+ return tabString(tab) + toString();
+ }
+
+ /**
+ * Get the variables from outside (parameters, globals ...)
+ * @return the variables from outside
+ */
+ public List getOutsideVariable() {
+ return statement.getOutsideVariable();
+ }
+
+ /**
+ * get the modified variables.
+ * @return the variables modified
+ */
+ public List getModifiedVariable() {
+ return statement.getModifiedVariable();
+ }
+
+ /**
+ * Get the variables used.
+ * @return the variables used
+ */
+ public List getUsedVariable() {
+ return statement.getUsedVariable();
+ }
+}
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