import java.io.DataInput;

import java.io.DataOutputStream;

import java.io.IOException;

import com.sun.org.apache.bcel.internal.Const;

 * @version $Id: ExceptionTable.java 1749603 2016-06-21 20:50:19Z ggregory $

    private int[] exception_index_table; // constant pool

    /**

     * Initialize from another object. Note that both objects use the same

     * references (shallow copy). Use copy() for a physical copy.

     */

    public ExceptionTable(final ExceptionTable c) {

        this(c.getNameIndex(), c.getLength(), c.getExceptionIndexTable(), c.getConstantPool());

    }

    /**

     * @param name_index Index in constant pool

     * @param length Content length in bytes

     * @param exception_index_table Table of indices in constant pool

     * @param constant_pool Array of constants

     */

    public ExceptionTable(final int name_index, final int length, final int[] exception_index_table,

            final ConstantPool constant_pool) {

        super(Const.ATTR_EXCEPTIONS, name_index, length, constant_pool);

        this.exception_index_table = exception_index_table != null ? exception_index_table : new int[0];

    }

    /**

     * 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

     */

    ExceptionTable(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool) throws IOException {

        this(name_index, length, (int[]) null, constant_pool);

        final int number_of_exceptions = input.readUnsignedShort();

        exception_index_table = new int[number_of_exceptions];

        for (int i = 0; i < number_of_exceptions; i++) {

            exception_index_table[i] = input.readUnsignedShort();

        }

    }

    /**

     * Called by objects that are traversing the nodes of the tree implicitely

     * 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.visitExceptionTable(this);

    }

    /**

     * Dump exceptions 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(exception_index_table.length);

        for (final int index : exception_index_table) {

            file.writeShort(index);

        }

    /**

     * @return Array of indices into constant pool of thrown exceptions.

     */

    public final int[] getExceptionIndexTable() {

        return exception_index_table;

    }

    /**

     * @return Length of exception table.

     */

    public final int getNumberOfExceptions() {

        return exception_index_table == null ? 0 : exception_index_table.length;

    }

    /**

     * @return class names of thrown exceptions

     */

    public final String[] getExceptionNames() {

        final String[] names = new String[exception_index_table.length];

        for (int i = 0; i < exception_index_table.length; i++) {

            names[i] = super.getConstantPool().getConstantString(exception_index_table[i],

                    Const.CONSTANT_Class).replace('/', '.');

        }

        return names;

    }

    /**

     * @param exception_index_table the list of exception indexes

     * Also redefines number_of_exceptions according to table length.

     */

    public final void setExceptionIndexTable( final int[] exception_index_table ) {

        this.exception_index_table = exception_index_table != null ? exception_index_table : new int[0];

    }

    /**

     * @return String representation, i.e., a list of thrown exceptions.

     */

    @Override

    public final String toString() {

        final StringBuilder buf = new StringBuilder();

        String str;

        buf.append("Exceptions: ");

        for (int i = 0; i < exception_index_table.length; i++) {

            str = super.getConstantPool().getConstantString(exception_index_table[i], Const.CONSTANT_Class);

            buf.append(Utility.compactClassName(str, false));

            if (i < exception_index_table.length - 1) {

                buf.append(", ");

            }

        }

        return buf.toString();

    }

    /**

     * @return deep copy of this attribute

     */

    @Override

    public Attribute copy( final ConstantPool _constant_pool ) {

        final ExceptionTable c = (ExceptionTable) clone();

        if (exception_index_table != null) {

            c.exception_index_table = new int[exception_index_table.length];

            System.arraycopy(exception_index_table, 0, c.exception_index_table, 0,

                    exception_index_table.length);

        }

        c.setConstantPool(_constant_pool);

        return c;

    }