--- /dev/null 2017-06-17 22:58:47.330661897 -0700 +++ new/src/java.xml/share/classes/com/sun/org/apache/bcel/internal/classfile/BootstrapMethod.java 2017-08-08 16:06:22.876887188 -0700 @@ -0,0 +1,173 @@ +/* + * 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 java.util.Arrays; + +import com.sun.org.apache.bcel.internal.Const; + +/** + * This class represents a bootstrap method attribute, i.e., the bootstrap + * method ref, the number of bootstrap arguments and an array of the + * bootstrap arguments. + * + * @see + * The class File Format : The BootstrapMethods Attribute + * @since 6.0 + */ +public class BootstrapMethod implements Cloneable { + + /** Index of the CONSTANT_MethodHandle_info structure in the constant_pool table */ + private int bootstrap_method_ref; + + /** Array of references to the constant_pool table */ + private int[] bootstrap_arguments; + + + /** + * Initialize from another object. + */ + public BootstrapMethod(final BootstrapMethod c) { + this(c.getBootstrapMethodRef(), c.getBootstrapArguments()); + } + + /** + * Construct object from input stream. + * + * @param input Input stream + * @throws IOException + */ + BootstrapMethod(final DataInput input) throws IOException { + this(input.readUnsignedShort(), input.readUnsignedShort()); + + for (int i = 0; i < bootstrap_arguments.length; i++) { + bootstrap_arguments[i] = input.readUnsignedShort(); + } + } + + // helper method + private BootstrapMethod(final int bootstrap_method_ref, final int num_bootstrap_arguments) { + this(bootstrap_method_ref, new int[num_bootstrap_arguments]); + } + + /** + * @param bootstrap_method_ref int index into constant_pool of CONSTANT_MethodHandle + * @param bootstrap_arguments int[] indices into constant_pool of CONSTANT__info + */ + public BootstrapMethod(final int bootstrap_method_ref, final int[] bootstrap_arguments) { + this.bootstrap_method_ref = bootstrap_method_ref; + this.bootstrap_arguments = bootstrap_arguments; + } + + /** + * @return index into constant_pool of bootstrap_method + */ + public int getBootstrapMethodRef() { + return bootstrap_method_ref; + } + + /** + * @param bootstrap_method_ref int index into constant_pool of CONSTANT_MethodHandle + */ + public void setBootstrapMethodRef(final int bootstrap_method_ref) { + this.bootstrap_method_ref = bootstrap_method_ref; + } + + /** + * @return int[] of bootstrap_method indices into constant_pool of CONSTANT__info + */ + public int[] getBootstrapArguments() { + return bootstrap_arguments; + } + + /** + * @return count of number of boostrap arguments + */ + public int getNumBootstrapArguments() { + return bootstrap_arguments.length; + } + + /** + * @param bootstrap_arguments int[] indices into constant_pool of CONSTANT__info + */ + public void setBootstrapArguments(final int[] bootstrap_arguments) { + this.bootstrap_arguments = bootstrap_arguments; + } + + /** + * @return String representation. + */ + @Override + public final String toString() { + return "BootstrapMethod(" + bootstrap_method_ref + ", " + bootstrap_arguments.length + ", " + + Arrays.toString(bootstrap_arguments) + ")"; + } + + /** + * @return Resolved string representation + */ + public final String toString( final ConstantPool constant_pool ) { + final StringBuilder buf = new StringBuilder(); + String bootstrap_method_name; + bootstrap_method_name = constant_pool.constantToString(bootstrap_method_ref, + Const.CONSTANT_MethodHandle); + buf.append(Utility.compactClassName(bootstrap_method_name)); + final int num_bootstrap_arguments = bootstrap_arguments.length; + if (num_bootstrap_arguments > 0) { + buf.append("\n Method Arguments:"); + for (int i = 0; i < num_bootstrap_arguments; i++) { + buf.append("\n ").append(i).append(": "); + buf.append(constant_pool.constantToString(constant_pool.getConstant(bootstrap_arguments[i]))); + } + } + return buf.toString(); + } + + /** + * Dump object to file stream in binary format. + * + * @param file Output file stream + * @throws IOException + */ + public final void dump(final DataOutputStream file) throws IOException { + file.writeShort(bootstrap_method_ref); + file.writeShort(bootstrap_arguments.length); + for (final int bootstrap_argument : bootstrap_arguments) { + file.writeShort(bootstrap_argument); + } + } + + /** + * @return deep copy of this object + */ + public BootstrapMethod copy() { + try { + return (BootstrapMethod) clone(); + } catch (final CloneNotSupportedException e) { + // TODO should this throw? + } + return null; + } +}