| /******************************************************************************* |
| * Copyright (c) 2000, 2009 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * 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. |
| */ |
| @Override |
| 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); |
| } |
| } |
| |
| @Override |
| public void resolve(BlockScope scope) { |
| // nothing to do during name resolution |
| } |
| } |