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 * this work for additional information regarding copyright ownership.
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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();
    }
}