| /******************************************************************************* |
| * Copyright (c) 2000, 2011 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.flow; |
| |
| import org.eclipse.jdt.internal.compiler.ast.ASTNode; |
| import org.eclipse.jdt.internal.compiler.lookup.Binding; |
| import org.eclipse.jdt.internal.compiler.lookup.BlockScope; |
| import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeBinding; |
| |
| /** |
| * Reflects the context of code analysis, keeping track of enclosing |
| * try statements, exception handlers, etc... |
| */ |
| public class InitializationFlowContext extends ExceptionHandlingFlowContext { |
| public int exceptionCount; |
| public TypeBinding[] thrownExceptions = new TypeBinding[5]; |
| public ASTNode[] exceptionThrowers = new ASTNode[5]; |
| public FlowInfo[] exceptionThrowerFlowInfos = new FlowInfo[5]; |
| public FlowInfo initsBeforeContext; |
| |
| public InitializationFlowContext(FlowContext parent, ASTNode associatedNode, FlowInfo initsBeforeContext, FlowContext initializationParent, BlockScope scope) { |
| super( |
| parent, |
| associatedNode, |
| Binding.NO_EXCEPTIONS, // no exception allowed by default |
| initializationParent, |
| scope, |
| FlowInfo.DEAD_END); |
| this.initsBeforeContext = initsBeforeContext; |
| } |
| |
| public void checkInitializerExceptions( |
| BlockScope currentScope, |
| FlowContext initializerContext, |
| FlowInfo flowInfo) { |
| for (int i = 0; i < this.exceptionCount; i++) { |
| initializerContext.checkExceptionHandlers( |
| this.thrownExceptions[i], |
| this.exceptionThrowers[i], |
| this.exceptionThrowerFlowInfos[i], |
| currentScope); |
| } |
| } |
| |
| @Override |
| public FlowContext getInitializationContext() { |
| return this; |
| } |
| |
| @Override |
| public String individualToString() { |
| |
| StringBuffer buffer = new StringBuffer("Initialization flow context"); //$NON-NLS-1$ |
| for (int i = 0; i < this.exceptionCount; i++) { |
| buffer.append('[').append(this.thrownExceptions[i].readableName()); |
| buffer.append('-').append(this.exceptionThrowerFlowInfos[i].toString()).append(']'); |
| } |
| return buffer.toString(); |
| } |
| |
| @Override |
| public void recordHandlingException( |
| ReferenceBinding exceptionType, |
| UnconditionalFlowInfo flowInfo, |
| TypeBinding raisedException, |
| TypeBinding caughtException, |
| ASTNode invocationSite, |
| boolean wasMasked) { |
| |
| // even if unreachable code, need to perform unhandled exception diagnosis |
| int size = this.thrownExceptions.length; |
| if (this.exceptionCount == size) { |
| System.arraycopy( |
| this.thrownExceptions, |
| 0, |
| (this.thrownExceptions = new TypeBinding[size * 2]), |
| 0, |
| size); |
| System.arraycopy( |
| this.exceptionThrowers, |
| 0, |
| (this.exceptionThrowers = new ASTNode[size * 2]), |
| 0, |
| size); |
| System.arraycopy( |
| this.exceptionThrowerFlowInfos, |
| 0, |
| (this.exceptionThrowerFlowInfos = new FlowInfo[size * 2]), |
| 0, |
| size); |
| } |
| this.thrownExceptions[this.exceptionCount] = raisedException; |
| this.exceptionThrowers[this.exceptionCount] = invocationSite; |
| this.exceptionThrowerFlowInfos[this.exceptionCount++] = flowInfo.copy(); |
| } |
| } |