jef.dna.constantInfo
Interface ConstInfoFactory

All Known Implementing Classes:

ConstantInfoFactory

public interface ConstInfoFactory

This interface defines the methods every factory implementation class meant for instantiating ConstantInfo objects has to provide.

Author:

Francesco Russo frusso@cs.unibo.it

Field Summary

static int	CONSTANT_Class Tag identifying a CONSTANT_Class
static int	CONSTANT_Double Tag identifying a CONSTANT_Double
static int	CONSTANT_Fieldref Tag identifying a CONSTANT_Fieldref
static int	CONSTANT_Float Tag identifying a CONSTANT_Float
static int	CONSTANT_Integer Tag identifying a CONSTANT_Integer
static int	CONSTANT_InterfaceMethodref Tag identifying a CONSTANT_InterfaceMethodref
static int	CONSTANT_Long Tag identifying a CONSTANT_Long
static int	CONSTANT_Methodref Tag identifying a CONSTANT_Methodref
static int	CONSTANT_NameAndType Tag identifying a CONSTANT_NameAndType
static int	CONSTANT_String Tag identifying a CONSTANT_String
static int	CONSTANT_Unusable_Entry Tag identifying an unusable constant pool table entry
static int	CONSTANT_Utf8 Tag identifying a CONSTANT_Utf8

Method Summary

ConstantInfo	getInstance(java.io.DataInputStream dis) This method returns a velid constantInfo instance iff the provided input stream contains at the current position a legal constantInfo identifier (or tag), followed by all the necessary information as defined by the Java VM Specification chapter 4.
ConstantInfo	getInstance(java.io.DataInputStream dis, Dna dna) This method returns a velid constantInfo instance iff the provided input stream contains at the current position a legal constantInfo identifier (or tag), followed by all the necessary information as defined by the Java VM Specification chapter 4.
ConstantInfo	getInstance(int tag) The returned instance belongs to the type defined by the provided tag.
ConstantInfo	getInstance(int tag, java.io.DataInputStream dis) The returned instance belongs to the type defined by the provided tag.

Field Detail

CONSTANT_Class

static final int CONSTANT_Class

Tag identifying a CONSTANT_Class

See Also:

Constant Field Values

CONSTANT_Fieldref

static final int CONSTANT_Fieldref

Tag identifying a CONSTANT_Fieldref

See Also:

Constant Field Values

CONSTANT_Methodref

static final int CONSTANT_Methodref

Tag identifying a CONSTANT_Methodref

See Also:

Constant Field Values

CONSTANT_InterfaceMethodref

static final int CONSTANT_InterfaceMethodref

Tag identifying a CONSTANT_InterfaceMethodref

See Also:

Constant Field Values

CONSTANT_String

static final int CONSTANT_String

Tag identifying a CONSTANT_String

See Also:

Constant Field Values

CONSTANT_Integer

static final int CONSTANT_Integer

Tag identifying a CONSTANT_Integer

See Also:

Constant Field Values

CONSTANT_Float

static final int CONSTANT_Float

Tag identifying a CONSTANT_Float

See Also:

Constant Field Values

CONSTANT_Long

static final int CONSTANT_Long

Tag identifying a CONSTANT_Long

See Also:

Constant Field Values

CONSTANT_Double

static final int CONSTANT_Double

Tag identifying a CONSTANT_Double

See Also:

Constant Field Values

CONSTANT_NameAndType

static final int CONSTANT_NameAndType

Tag identifying a CONSTANT_NameAndType

See Also:

Constant Field Values

CONSTANT_Utf8

static final int CONSTANT_Utf8

Tag identifying a CONSTANT_Utf8

See Also:

Constant Field Values

CONSTANT_Unusable_Entry

static final int CONSTANT_Unusable_Entry

Tag identifying an unusable constant pool table entry

See Also:

Constant Field Values

Method Detail

getInstance

ConstantInfo getInstance(java.io.DataInputStream dis,
                         Dna dna)
                         throws DnaDeserializationException,
                                UnknownConstantPoolTableEntryException

This method returns a velid constantInfo instance iff the provided input stream contains at the current position a legal constantInfo identifier (or tag), followed by all the necessary information as defined by the Java VM Specification chapter 4.

Parameters:

dis - The input stream opened over the Java class file

dna - The current Dna instance the generated ConstantInfo will belong to

Returns:

ConstantInfo a valid constantInfo instance

Throws:

DnaDeserializationException

UnknownConstantPoolTableEntryException

getInstance

ConstantInfo getInstance(java.io.DataInputStream dis)
                         throws DnaDeserializationException,
                                UnknownConstantPoolTableEntryException

This method returns a velid constantInfo instance iff the provided input stream contains at the current position a legal constantInfo identifier (or tag), followed by all the necessary information as defined by the Java VM Specification chapter 4.

Parameters:

dis - The input stream opened over the Java class file

Returns:

ConstantInfo a valid constantInfo instance

Throws:

DnaDeserializationException

UnknownConstantPoolTableEntryException

getInstance

ConstantInfo getInstance(int tag,
                         java.io.DataInputStream dis)
                         throws DnaDeserializationException,
                                UnknownConstantPoolTableEntryException

The returned instance belongs to the type defined by the provided tag. This ConstantInfo implementation will also be populated using the content available from the provided DataInputStream.

Parameters:

tag - The type of the required ConstantInfo

dis - The stream useful for populating the ConstantInfo

Throws:

DnaDeserializationException

UnknownConstantPoolTableEntryException

getInstance

ConstantInfo getInstance(int tag)
                         throws DnaDeserializationException,
                                UnknownConstantPoolTableEntryException

The returned instance belongs to the type defined by the provided tag. This ConstantInfo implementation won't be populated.

Parameters:

tag - The type of the required ConstantInfo

Throws:

DnaDeserializationException

UnknownConstantPoolTableEntryException