| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * 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 com.sun.org.apache.bcel.internal.generic; |
| |
| import com.sun.org.apache.bcel.internal.Constants; |
| |
| /** |
| * Denotes array type, such as int[][] |
| * |
| * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> |
| */ |
| public final class ArrayType extends ReferenceType { |
| private int dimensions; |
| private Type basic_type; |
| |
| /** |
| * Convenience constructor for array type, e.g. int[] |
| * |
| * @param type array type, e.g. T_INT |
| */ |
| public ArrayType(byte type, int dimensions) { |
| this(BasicType.getType(type), dimensions); |
| } |
| |
| /** |
| * Convenience constructor for reference array type, e.g. Object[] |
| * |
| * @param class_name complete name of class (java.lang.String, e.g.) |
| */ |
| public ArrayType(String class_name, int dimensions) { |
| this(new ObjectType(class_name), dimensions); |
| } |
| |
| /** |
| * Constructor for array of given type |
| * |
| * @param type type of array (may be an array itself) |
| */ |
| public ArrayType(Type type, int dimensions) { |
| super(Constants.T_ARRAY, "<dummy>"); |
| |
| if((dimensions < 1) || (dimensions > Constants.MAX_BYTE)) |
| throw new ClassGenException("Invalid number of dimensions: " + dimensions); |
| |
| switch(type.getType()) { |
| case Constants.T_ARRAY: |
| ArrayType array = (ArrayType)type; |
| this.dimensions = dimensions + array.dimensions; |
| basic_type = array.basic_type; |
| break; |
| |
| case Constants.T_VOID: |
| throw new ClassGenException("Invalid type: void[]"); |
| |
| default: // Basic type or reference |
| this.dimensions = dimensions; |
| basic_type = type; |
| break; |
| } |
| |
| StringBuffer buf = new StringBuffer(); |
| for(int i=0; i < this.dimensions; i++) |
| buf.append('['); |
| |
| buf.append(basic_type.getSignature()); |
| |
| signature = buf.toString(); |
| } |
| |
| /** |
| * @return basic type of array, i.e., for int[][][] the basic type is int |
| */ |
| public Type getBasicType() { |
| return basic_type; |
| } |
| |
| /** |
| * @return element type of array, i.e., for int[][][] the element type is int[][] |
| */ |
| public Type getElementType() { |
| if(dimensions == 1) |
| return basic_type; |
| else |
| return new ArrayType(basic_type, dimensions - 1); |
| } |
| |
| /** @return number of dimensions of array |
| */ |
| public int getDimensions() { return dimensions; } |
| |
| /** @return a hash code value for the object. |
| */ |
| public int hashCode() { return basic_type.hashCode() ^ dimensions; } |
| |
| /** @return true if both type objects refer to the same array type. |
| */ |
| public boolean equals(Object type) { |
| if(type instanceof ArrayType) { |
| ArrayType array = (ArrayType)type; |
| return (array.dimensions == dimensions) && array.basic_type.equals(basic_type); |
| } else |
| return false; |
| } |
| } |