Package org.apache.bcel.classfile

Class Signature

java.lang.Object

org.apache.bcel.classfile.Attribute

org.apache.bcel.classfile.Signature

All Implemented Interfaces:

java.lang.Cloneable, Node

public final class Signature
extends Attribute

This class is derived from Attribute and represents a reference to a GJ attribute.

See Also:

Attribute

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	Signature.MyByteArrayInputStream	Extends ByteArrayInputStream to make 'unreading' chars possible.

Field Summary

Fields

Modifier and Type	Field	Description
private int	signature_index

Fields inherited from class org.apache.bcel.classfile.Attribute

constant_pool, length, name_index, tag

Constructor Summary

Constructors

Constructor	Description
Signature(int name_index, int length, int signature_index, ConstantPool constant_pool)
Signature(int name_index, int length, java.io.DataInput input, ConstantPool constant_pool)	Construct object from file stream.
Signature(Signature c)	Initialize from another object.

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor v)	Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
Attribute	copy(ConstantPool _constant_pool)
void	dump(java.io.DataOutputStream file)	Dump source file attribute to file stream in binary format.
java.lang.String	getSignature()
int	getSignatureIndex()
private static boolean	identStart(int ch)
static boolean	isActualParameterList(java.lang.String s)
static boolean	isFormalParameterList(java.lang.String s)
private static void	matchGJIdent(Signature.MyByteArrayInputStream in, java.lang.StringBuilder buf)
private static void	matchIdent(Signature.MyByteArrayInputStream in, java.lang.StringBuilder buf)
void	setSignatureIndex(int signature_index)
java.lang.String	toString()
static java.lang.String	translate(java.lang.String s)

Methods inherited from class org.apache.bcel.classfile.Attribute

addAttributeReader, addAttributeReader, clone, getConstantPool, getLength, getName, getNameIndex, getTag, println, readAttribute, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex

Methods inherited from class java.lang.Object

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

Field Detail

signature_index

private int signature_index

Constructor Detail

Signature

public Signature(Signature c)

Initialize from another object. Note that both objects use the same references (shallow copy). Use clone() for a physical copy.

Signature

Signature(int name_index,
          int length,
          java.io.DataInput input,
          ConstantPool constant_pool)
   throws java.io.IOException

Construct object from file stream.

Parameters:

name_index - Index in constant pool to CONSTANT_Utf8

length - Content length in bytes

input - Input stream

constant_pool - Array of constants

Throws:

java.io.IOException

Signature

public Signature(int name_index,
                 int length,
                 int signature_index,
                 ConstantPool constant_pool)

Parameters:

name_index - Index in constant pool to CONSTANT_Utf8

length - Content length in bytes

signature_index - Index in constant pool to CONSTANT_Utf8

constant_pool - Array of constants

Method Detail

accept

public void accept(Visitor v)

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.

Specified by:

accept in interface Node

Specified by:

accept in class Attribute

Parameters:

v - Visitor object

dump

public void dump(java.io.DataOutputStream file)
          throws java.io.IOException

Dump source file attribute to file stream in binary format.

Overrides:

dump in class Attribute

Parameters:

file - Output file stream

Throws:

java.io.IOException

getSignatureIndex

public int getSignatureIndex()

Returns:

Index in constant pool of source file name.

setSignatureIndex

public void setSignatureIndex(int signature_index)

Parameters:

signature_index - the index info the constant pool of this signature

getSignature

public java.lang.String getSignature()

Returns:

GJ signature.

identStart

private static boolean identStart(int ch)

matchIdent

private static void matchIdent(Signature.MyByteArrayInputStream in,
                               java.lang.StringBuilder buf)

matchGJIdent

private static void matchGJIdent(Signature.MyByteArrayInputStream in,
                                 java.lang.StringBuilder buf)

translate

public static java.lang.String translate(java.lang.String s)

isFormalParameterList

public static boolean isFormalParameterList(java.lang.String s)

isActualParameterList

public static boolean isActualParameterList(java.lang.String s)

toString

public java.lang.String toString()

Overrides:

toString in class Attribute

Returns:

String representation

copy

public Attribute copy(ConstantPool _constant_pool)

Specified by:

copy in class Attribute

Returns:

deep copy of this attribute