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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 represents a BootstrapMethods attribute.
See Also:
Since:6.0
/** * This class represents a BootstrapMethods attribute. * * @see <a href="http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.23"> * The class File Format : The BootstrapMethods Attribute</a> * @since 6.0 */
public class BootstrapMethods extends Attribute { private BootstrapMethod[] bootstrap_methods; // TODO this could be made final (setter is not used)
Initialize from another object. Note that both objects use the same references (shallow copy). Use clone() for a physical copy.
/** * Initialize from another object. Note that both objects use the same * references (shallow copy). Use clone() for a physical copy. */
public BootstrapMethods(final BootstrapMethods c) { this(c.getNameIndex(), c.getLength(), c.getBootstrapMethods(), c.getConstantPool()); }
Params:
  • name_index – Index in constant pool to CONSTANT_Utf8
  • length – Content length in bytes
  • bootstrap_methods – array of bootstrap methods
  • constant_pool – Array of constants
/** * @param name_index Index in constant pool to CONSTANT_Utf8 * @param length Content length in bytes * @param bootstrap_methods array of bootstrap methods * @param constant_pool Array of constants */
public BootstrapMethods(final int name_index, final int length, final BootstrapMethod[] bootstrap_methods, final ConstantPool constant_pool) { super(Const.ATTR_BOOTSTRAP_METHODS, name_index, length, constant_pool); this.bootstrap_methods = bootstrap_methods; }
Construct object from Input stream.
Params:
  • name_index – Index in constant pool to CONSTANT_Utf8
  • length – Content length in bytes
  • input – Input stream
  • constant_pool – Array of constants
Throws:
/** * Construct object from Input stream. * * @param name_index Index in constant pool to CONSTANT_Utf8 * @param length Content length in bytes * @param input Input stream * @param constant_pool Array of constants * @throws IOException */
BootstrapMethods(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool) throws IOException { this(name_index, length, (BootstrapMethod[]) null, constant_pool); final int num_bootstrap_methods = input.readUnsignedShort(); bootstrap_methods = new BootstrapMethod[num_bootstrap_methods]; for (int i = 0; i < num_bootstrap_methods; i++) { bootstrap_methods[i] = new BootstrapMethod(input); } }
Returns:array of bootstrap method "records"
/** * @return array of bootstrap method "records" */
public final BootstrapMethod[] getBootstrapMethods() { return bootstrap_methods; }
Params:
  • bootstrap_methods – the array of bootstrap methods
/** * @param bootstrap_methods the array of bootstrap methods */
public final void setBootstrapMethods(final BootstrapMethod[] bootstrap_methods) { this.bootstrap_methods = bootstrap_methods; }
Params:
  • v – Visitor object
/** * @param v Visitor object */
@Override public void accept(final Visitor v) { v.visitBootstrapMethods(this); }
Returns:deep copy of this attribute
/** * @return deep copy of this attribute */
@Override public BootstrapMethods copy(final ConstantPool _constant_pool) { final BootstrapMethods c = (BootstrapMethods) clone(); c.bootstrap_methods = new BootstrapMethod[bootstrap_methods.length]; for (int i = 0; i < bootstrap_methods.length; i++) { c.bootstrap_methods[i] = bootstrap_methods[i].copy(); } c.setConstantPool(_constant_pool); return c; }
Dump bootstrap methods attribute to file stream in binary format.
Params:
  • file – Output file stream
Throws:
/** * Dump bootstrap methods attribute to file stream in binary format. * * @param file Output file stream * @throws IOException */
@Override public final void dump(final DataOutputStream file) throws IOException { super.dump(file); file.writeShort(bootstrap_methods.length); for (final BootstrapMethod bootstrap_method : bootstrap_methods) { bootstrap_method.dump(file); } }
Returns:String representation.
/** * @return String representation. */
@Override public final String toString() { final StringBuilder buf = new StringBuilder(); buf.append("BootstrapMethods("); buf.append(bootstrap_methods.length); buf.append("):"); for (int i = 0; i < bootstrap_methods.length; i++) { buf.append("\n"); final int start = buf.length(); buf.append(" ").append(i).append(": "); final int indent_count = buf.length() - start; final String[] lines = (bootstrap_methods[i].toString(super.getConstantPool())).split("\\r?\\n"); buf.append(lines[0]); for (int j = 1; j < lines.length; j++) { buf.append("\n").append(" ".substring(0,indent_count)).append(lines[j]); } } return buf.toString(); } }