| /* |
| * 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.classfile; |
| |
| import java.io.DataInput; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| import com.sun.org.apache.bcel.internal.Const; |
| |
| /** |
| * This class is derived from <em>Attribute</em> and indicates the main class of a module. |
| * There may be at most one ModuleMainClass attribute in a ClassFile structure. |
| * |
| * @see Attribute |
| */ |
| public final class ModuleMainClass extends Attribute { |
| |
| private int main_class_index; |
| |
| |
| /** |
| * Initialize from another object. Note that both objects use the same |
| * references (shallow copy). Use copy() for a physical copy. |
| */ |
| public ModuleMainClass(final ModuleMainClass c) { |
| this(c.getNameIndex(), c.getLength(), c.getHostClassIndex(), c.getConstantPool()); |
| } |
| |
| |
| /** |
| * @param name_index Index in constant pool |
| * @param length Content length in bytes |
| * @param main_class_index Host class index |
| * @param constant_pool Array of constants |
| */ |
| public ModuleMainClass(final int name_index, final int length, final int main_class_index, |
| final ConstantPool constant_pool) { |
| super(Const.ATTR_NEST_MEMBERS, name_index, length, constant_pool); |
| this.main_class_index = main_class_index; |
| } |
| |
| |
| /** |
| * Construct object from input stream. |
| * @param name_index Index in constant pool |
| * @param length Content length in bytes |
| * @param input Input stream |
| * @param constant_pool Array of constants |
| * @throws IOException |
| */ |
| ModuleMainClass(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool) throws IOException { |
| this(name_index, length, 0, constant_pool); |
| main_class_index = input.readUnsignedShort(); |
| } |
| |
| |
| /** |
| * Called by objects that are traversing the nodes of the tree implicitly |
| * defined by the contents of a Java class. I.e., the hierarchy of methods, |
| * fields, attributes, etc. spawns a tree of objects. |
| * |
| * @param v Visitor object |
| */ |
| @Override |
| public void accept( final Visitor v ) { |
| v.visitModuleMainClass(this); |
| } |
| |
| |
| /** |
| * Dump ModuleMainClass attribute to file stream in binary format. |
| * |
| * @param file Output file stream |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public void dump( final DataOutputStream file ) throws IOException { |
| super.dump(file); |
| file.writeShort(main_class_index); |
| } |
| |
| |
| /** |
| * @return index into constant pool of host class name. |
| */ |
| public int getHostClassIndex() { |
| return main_class_index; |
| } |
| |
| |
| /** |
| * @param main_class_index the host class index |
| */ |
| public void setHostClassIndex( final int main_class_index ) { |
| this.main_class_index = main_class_index; |
| } |
| |
| |
| /** |
| * @return String representation |
| */ |
| @Override |
| public String toString() { |
| final StringBuilder buf = new StringBuilder(); |
| buf.append("ModuleMainClass: "); |
| final String class_name = super.getConstantPool().getConstantString(main_class_index, Const.CONSTANT_Class); |
| buf.append(Utility.compactClassName(class_name, false)); |
| return buf.toString(); |
| } |
| |
| |
| /** |
| * @return deep copy of this attribute |
| */ |
| @Override |
| public Attribute copy( final ConstantPool _constant_pool ) { |
| final ModuleMainClass c = (ModuleMainClass) clone(); |
| c.setConstantPool(_constant_pool); |
| return c; |
| } |
| } |