org.eclipse.jdt.internal.compiler.ast.BranchStatement Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of ecj Show documentation
This is Eclipse JDT Core Batch Compiler used by Scout SDK
The newest version!
/*******************************************************************************
 * Copyright (c) 2000, 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.compiler.ast;

import org.eclipse.jdt.internal.compiler.codegen.*;
import org.eclipse.jdt.internal.compiler.lookup.*;

public abstract class BranchStatement extends Statement {

	public char[] label;
	public BranchLabel targetLabel;
	public SubRoutineStatement[] subroutines;
	public int initStateIndex = -1;

/**
 * BranchStatement constructor comment.
 */
public BranchStatement(char[] label, int sourceStart,int sourceEnd) {
	this.label = label ;
	this.sourceStart = sourceStart;
	this.sourceEnd = sourceEnd;
}

/**
 * Branch code generation
 *
 *   generate the finallyInvocationSequence.
 */
public void generateCode(BlockScope currentScope, CodeStream codeStream) {
	if ((this.bits & ASTNode.IsReachable) == 0) {
		return;
	}
	int pc = codeStream.position;

	// generation of code responsible for invoking the finally
	// blocks in sequence
	if (this.subroutines != null){
		for (int i = 0, max = this.subroutines.length; i < max; i++){
			SubRoutineStatement sub = this.subroutines[i];
			boolean didEscape = sub.generateSubRoutineInvocation(currentScope, codeStream, this.targetLabel, this.initStateIndex, null);
			if (didEscape) {
					codeStream.recordPositionsFrom(pc, this.sourceStart);
					SubRoutineStatement.reenterAllExceptionHandlers(this.subroutines, i, codeStream);
					if (this.initStateIndex != -1) {
						codeStream.removeNotDefinitelyAssignedVariables(currentScope, this.initStateIndex);
						codeStream.addDefinitelyAssignedVariables(currentScope, this.initStateIndex);
					}
					return;
			}
		}
	}
	codeStream.goto_(this.targetLabel);
	codeStream.recordPositionsFrom(pc, this.sourceStart);
	SubRoutineStatement.reenterAllExceptionHandlers(this.subroutines, -1, codeStream);
	if (this.initStateIndex != -1) {
		codeStream.removeNotDefinitelyAssignedVariables(currentScope, this.initStateIndex);
		codeStream.addDefinitelyAssignedVariables(currentScope, this.initStateIndex);
	}
}

public void resolve(BlockScope scope) {
	// nothing to do during name resolution
}
}