com.vladium.jcd.cls.attribute

Class ExceptionsAttribute_info

java.lang.Object

com.vladium.jcd.cls.attribute.Attribute_info

com.vladium.jcd.cls.attribute.ExceptionsAttribute_info

All Implemented Interfaces:

IClassFormatOutput, java.lang.Cloneable

public final class ExceptionsAttribute_info
extends Attribute_info

The Exceptions attribute is a variable-length attribute used in the attributes table of a Method_info structure. The Exceptions attribute indicates which checked exceptions a method may throw. There must be exactly one Exceptions attribute in each method_info structure.

The Exceptions attribute has the following format:

 Exceptions_attribute {
          u2 attribute_name_index;
          u4 attribute_length;
          u2 number_of_exceptions;
          u2 exception_index_table[number_of_exceptions];
  }
 

The value of the number_of_exceptions item indicates the number of entries in the exception_index_table.

Each nonzero value in the exception_index_table array must be a valid index into the constant_pool table. For each table item, if exception_index_table[i] != 0 , where 0 < i < number_of_exceptions, then the constant_pool entry at index exception_index_table[i] must be a CONSTANT_Class_info structure representing a class type that this method is declared to throw -- see DeclaredExceptionTable.

Author:

(C) 2001, Vlad Roubtsov

Field Summary

Fields

Modifier and Type	Field and Description
private IDeclaredExceptionTable	m_exceptions

Fields inherited from class com.vladium.jcd.cls.attribute.Attribute_info

ATTRIBUTE_BRIDGE, ATTRIBUTE_CODE, ATTRIBUTE_CONSTANT_VALUE, ATTRIBUTE_EXCEPTIONS, ATTRIBUTE_INNERCLASSES, ATTRIBUTE_LINE_NUMBER_TABLE, ATTRIBUTE_SOURCEFILE, ATTRIBUTE_SYNTHETIC, m_attribute_length, m_name_index

Constructor Summary

Constructors

Constructor and Description
ExceptionsAttribute_info(int attribute_name_index, IDeclaredExceptionTable exceptions)
ExceptionsAttribute_info(int attribute_name_index, long attribute_length, UDataInputStream bytes)

Method Summary

Methods

Modifier and Type	Method and Description
void	accept(IAttributeVisitor visitor, java.lang.Object ctx)
java.lang.Object	clone() Performs a deep copy.
IDeclaredExceptionTable	getDeclaredExceptions()
long	length() Returns the total length of this attribute when converted to .class format [including the 6-byte header]
java.lang.String	toString()
void	writeInClassFormat(UDataOutputStream out)

Methods inherited from class com.vladium.jcd.cls.attribute.Attribute_info

getName, new_Attribute_info

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m_exceptions

private IDeclaredExceptionTable m_exceptions

Constructor Detail

ExceptionsAttribute_info

public ExceptionsAttribute_info(int attribute_name_index,
                        IDeclaredExceptionTable exceptions)

ExceptionsAttribute_info

ExceptionsAttribute_info(int attribute_name_index,
                        long attribute_length,
                        UDataInputStream bytes)
                   throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getDeclaredExceptions

public IDeclaredExceptionTable getDeclaredExceptions()

length

public long length()

Description copied from class: Attribute_info

Returns the total length of this attribute when converted to .class format [including the 6-byte header]

Specified by:

length in class Attribute_info

accept

public void accept(IAttributeVisitor visitor,
          java.lang.Object ctx)

Specified by:

accept in class Attribute_info

toString

public java.lang.String toString()

Specified by:

toString in class Attribute_info

clone

public java.lang.Object clone()

Performs a deep copy.

Overrides:

clone in class Attribute_info

writeInClassFormat

public void writeInClassFormat(UDataOutputStream out)
                        throws java.io.IOException

Specified by:

writeInClassFormat in interface IClassFormatOutput

Overrides:

writeInClassFormat in class Attribute_info

Throws:

java.io.IOException