| /* |
| * 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 java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| import com.sun.org.apache.bcel.internal.ExceptionConst; |
| import com.sun.org.apache.bcel.internal.classfile.ConstantPool; |
| import com.sun.org.apache.bcel.internal.util.ByteSequence; |
| |
| /** |
| * MULTIANEWARRAY - Create new mutidimensional array of references |
| * <PRE>Stack: ..., count1, [count2, ...] -> ..., arrayref</PRE> |
| * |
| */ |
| public class MULTIANEWARRAY extends CPInstruction implements LoadClass, AllocationInstruction, |
| ExceptionThrower { |
| |
| private short dimensions; |
| |
| |
| /** |
| * Empty constructor needed for Instruction.readInstruction. |
| * Not to be used otherwise. |
| */ |
| MULTIANEWARRAY() { |
| } |
| |
| |
| public MULTIANEWARRAY(final int index, final short dimensions) { |
| super(com.sun.org.apache.bcel.internal.Const.MULTIANEWARRAY, index); |
| if (dimensions < 1) { |
| throw new ClassGenException("Invalid dimensions value: " + dimensions); |
| } |
| this.dimensions = dimensions; |
| super.setLength(4); |
| } |
| |
| |
| /** |
| * Dump instruction as byte code to stream out. |
| * @param out Output stream |
| */ |
| @Override |
| public void dump( final DataOutputStream out ) throws IOException { |
| out.writeByte(super.getOpcode()); |
| out.writeShort(super.getIndex()); |
| out.writeByte(dimensions); |
| } |
| |
| |
| /** |
| * Read needed data (i.e., no. dimension) from file. |
| */ |
| @Override |
| protected void initFromFile( final ByteSequence bytes, final boolean wide ) throws IOException { |
| super.initFromFile(bytes, wide); |
| dimensions = bytes.readByte(); |
| super.setLength(4); |
| } |
| |
| |
| /** |
| * @return number of dimensions to be created |
| */ |
| public final short getDimensions() { |
| return dimensions; |
| } |
| |
| |
| /** |
| * @return mnemonic for instruction |
| */ |
| @Override |
| public String toString( final boolean verbose ) { |
| return super.toString(verbose) + " " + super.getIndex() + " " + dimensions; |
| } |
| |
| |
| /** |
| * @return mnemonic for instruction with symbolic references resolved |
| */ |
| @Override |
| public String toString( final ConstantPool cp ) { |
| return super.toString(cp) + " " + dimensions; |
| } |
| |
| |
| /** |
| * Also works for instructions whose stack effect depends on the |
| * constant pool entry they reference. |
| * @return Number of words consumed from stack by this instruction |
| */ |
| @Override |
| public int consumeStack( final ConstantPoolGen cpg ) { |
| return dimensions; |
| } |
| |
| |
| @Override |
| public Class<?>[] getExceptions() { |
| return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_CLASS_AND_INTERFACE_RESOLUTION, |
| ExceptionConst.ILLEGAL_ACCESS_ERROR, |
| ExceptionConst.NEGATIVE_ARRAY_SIZE_EXCEPTION); |
| } |
| |
| |
| @Override |
| public ObjectType getLoadClassType( final ConstantPoolGen cpg ) { |
| Type t = getType(cpg); |
| if (t instanceof ArrayType) { |
| t = ((ArrayType) t).getBasicType(); |
| } |
| return (t instanceof ObjectType) ? (ObjectType) t : null; |
| } |
| |
| |
| /** |
| * Call corresponding visitor method(s). The order is: |
| * Call visitor methods of implemented interfaces first, then |
| * call methods according to the class hierarchy in descending order, |
| * i.e., the most specific visitXXX() call comes last. |
| * |
| * @param v Visitor object |
| */ |
| @Override |
| public void accept( final Visitor v ) { |
| v.visitLoadClass(this); |
| v.visitAllocationInstruction(this); |
| v.visitExceptionThrower(this); |
| v.visitTypedInstruction(this); |
| v.visitCPInstruction(this); |
| v.visitMULTIANEWARRAY(this); |
| } |
| } |