ExceptionConst.java
- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.apache.bcel;
- import org.apache.commons.lang3.ArrayUtils;
- /**
- * Exception constants.
- *
- * @since 6.0 (intended to replace the InstructionConstant interface)
- */
- public final class ExceptionConst {
- /**
- * Enum corresponding to the various Exception Class arrays, used by
- * {@link ExceptionConst#createExceptions(EXCS, Class...)}
- */
- public enum EXCS {
- EXCS_CLASS_AND_INTERFACE_RESOLUTION, EXCS_FIELD_AND_METHOD_RESOLUTION, EXCS_INTERFACE_METHOD_RESOLUTION, EXCS_STRING_RESOLUTION, EXCS_ARRAY_EXCEPTION,
- }
- /**
- * The mother of all exceptions
- */
- public static final Class<Throwable> THROWABLE = Throwable.class;
- /**
- * Super class of any run-time exception
- */
- public static final Class<RuntimeException> RUNTIME_EXCEPTION = RuntimeException.class;
- /**
- * Super class of any linking exception (aka Linkage Error)
- */
- public static final Class<LinkageError> LINKING_EXCEPTION = LinkageError.class;
- /**
- * Linking Exceptions
- */
- public static final Class<ClassCircularityError> CLASS_CIRCULARITY_ERROR = ClassCircularityError.class;
- public static final Class<ClassFormatError> CLASS_FORMAT_ERROR = ClassFormatError.class;
- public static final Class<ExceptionInInitializerError> EXCEPTION_IN_INITIALIZER_ERROR = ExceptionInInitializerError.class;
- public static final Class<IncompatibleClassChangeError> INCOMPATIBLE_CLASS_CHANGE_ERROR = IncompatibleClassChangeError.class;
- public static final Class<AbstractMethodError> ABSTRACT_METHOD_ERROR = AbstractMethodError.class;
- public static final Class<IllegalAccessError> ILLEGAL_ACCESS_ERROR = IllegalAccessError.class;
- public static final Class<InstantiationError> INSTANTIATION_ERROR = InstantiationError.class;
- public static final Class<NoSuchFieldError> NO_SUCH_FIELD_ERROR = NoSuchFieldError.class;
- public static final Class<NoSuchMethodError> NO_SUCH_METHOD_ERROR = NoSuchMethodError.class;
- public static final Class<NoClassDefFoundError> NO_CLASS_DEF_FOUND_ERROR = NoClassDefFoundError.class;
- public static final Class<UnsatisfiedLinkError> UNSATISFIED_LINK_ERROR = UnsatisfiedLinkError.class;
- public static final Class<VerifyError> VERIFY_ERROR = VerifyError.class;
- /* UnsupportedClassVersionError is new in JDK 1.2 */
- // public static final Class UnsupportedClassVersionError = UnsupportedClassVersionError.class;
- /**
- * Run-Time Exceptions
- */
- public static final Class<NullPointerException> NULL_POINTER_EXCEPTION = NullPointerException.class;
- public static final Class<ArrayIndexOutOfBoundsException> ARRAY_INDEX_OUT_OF_BOUNDS_EXCEPTION = ArrayIndexOutOfBoundsException.class;
- public static final Class<ArithmeticException> ARITHMETIC_EXCEPTION = ArithmeticException.class;
- public static final Class<NegativeArraySizeException> NEGATIVE_ARRAY_SIZE_EXCEPTION = NegativeArraySizeException.class;
- public static final Class<ClassCastException> CLASS_CAST_EXCEPTION = ClassCastException.class;
- public static final Class<IllegalMonitorStateException> ILLEGAL_MONITOR_STATE = IllegalMonitorStateException.class;
- /**
- * Pre-defined exception arrays according to chapters 5.1-5.4 of the Java Virtual Machine Specification
- */
- private static final Class<?>[] EXCS_CLASS_AND_INTERFACE_RESOLUTION = {NO_CLASS_DEF_FOUND_ERROR, CLASS_FORMAT_ERROR, VERIFY_ERROR, ABSTRACT_METHOD_ERROR,
- EXCEPTION_IN_INITIALIZER_ERROR, ILLEGAL_ACCESS_ERROR}; // Chapter 5.1
- private static final Class<?>[] EXCS_FIELD_AND_METHOD_RESOLUTION = {NO_SUCH_FIELD_ERROR, ILLEGAL_ACCESS_ERROR, NO_SUCH_METHOD_ERROR}; // Chapter 5.2
- /**
- * Empty array.
- */
- private static final Class<?>[] EXCS_INTERFACE_METHOD_RESOLUTION = new Class[0]; // Chapter 5.3 (as below)
- /**
- * Empty array.
- */
- private static final Class<?>[] EXCS_STRING_RESOLUTION = new Class[0];
- // Chapter 5.4 (no errors but the ones that _always_ could happen! How stupid.)
- private static final Class<?>[] EXCS_ARRAY_EXCEPTION = {NULL_POINTER_EXCEPTION, ARRAY_INDEX_OUT_OF_BOUNDS_EXCEPTION};
- /**
- * Creates a copy of the specified Exception Class array combined with any additional Exception classes.
- *
- * @param type the basic array type
- * @param extraClasses additional classes, if any
- * @return the merged array
- */
- public static Class<?>[] createExceptions(final EXCS type, final Class<?>... extraClasses) {
- switch (type) {
- case EXCS_CLASS_AND_INTERFACE_RESOLUTION:
- return mergeExceptions(EXCS_CLASS_AND_INTERFACE_RESOLUTION, extraClasses);
- case EXCS_ARRAY_EXCEPTION:
- return mergeExceptions(EXCS_ARRAY_EXCEPTION, extraClasses);
- case EXCS_FIELD_AND_METHOD_RESOLUTION:
- return mergeExceptions(EXCS_FIELD_AND_METHOD_RESOLUTION, extraClasses);
- case EXCS_INTERFACE_METHOD_RESOLUTION:
- return mergeExceptions(EXCS_INTERFACE_METHOD_RESOLUTION, extraClasses);
- case EXCS_STRING_RESOLUTION:
- return mergeExceptions(EXCS_STRING_RESOLUTION, extraClasses);
- default:
- throw new AssertionError("Cannot happen; unexpected enum value: " + type);
- }
- }
- // helper method to merge exception class arrays
- private static Class<?>[] mergeExceptions(final Class<?>[] input, final Class<?>... extraClasses) {
- return ArrayUtils.addAll(input, extraClasses);
- }
- }