org.apache.bcel.classfile

Class Signature

Implemented Interfaces:
Cloneable, Node, Serializable

public final class Signature
extends Attribute

This class is derived from Attribute and represents a reference to a GJ attribute.
Version:
$Id: Signature.java 386056 2006-03-15 11:31:56Z tcurdt $
Author:
M. Dahm
See Also:
Attribute

Nested Class Summary

private static class
Signature.MyByteArrayInputStream
Extends ByteArrayInputStream to make 'unreading' chars possible.

Field Summary

private int
signature_index

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

constant_pool, length, name_index, readers, tag

Constructor Summary

Signature(int name_index, int length, DataInputStream file, ConstantPool constant_pool)
Construct object from file stream.
Signature(int name_index, int length, int signature_index, ConstantPool constant_pool)
Signature(Signature c)
Initialize from another object.

Method Summary

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(DataOutputStream file)
Dump source file attribute to file stream in binary format.
String
getSignature()
int
getSignatureIndex()
private static boolean
identStart(int ch)
static boolean
isActualParameterList(String s)
static boolean
isFormalParameterList(String s)
private static void
matchGJIdent(Signature.MyByteArrayInputStream in, StringBuffer buf)
private static void
matchIdent(Signature.MyByteArrayInputStream in, StringBuffer buf)
void
setSignatureIndex(int signature_index)
String
toString()
static String
translate(String s)

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

accept, addAttributeReader, clone, copy, dump, getConstantPool, getLength, getNameIndex, getTag, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex, toString

Field Details

signature_index

private int signature_index

Constructor Details

Signature

(package private)  Signature(int name_index,
                             int length,
                             DataInputStream file,
                             ConstantPool constant_pool)
            throws IOException
Construct object from file stream.
Parameters:
name_index - Index in constant pool to CONSTANT_Utf8
length - Content length in bytes
file - Input stream
constant_pool - Array of constants

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

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.

Method Details

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
Overrides:
accept in interface Attribute
Parameters:
v - Visitor object

copy

public Attribute copy(ConstantPool _constant_pool)
Overrides:
copy in interface Attribute
Returns:
deep copy of this attribute

dump

public final void dump(DataOutputStream file)
            throws IOException
Dump source file attribute to file stream in binary format.
Overrides:
dump in interface Attribute
Parameters:
file - Output file stream

getSignature

public final String getSignature()
Returns:
GJ signature.

getSignatureIndex

public final int getSignatureIndex()
Returns:
Index in constant pool of source file name.

identStart

private static boolean identStart(int ch)

isActualParameterList

public static final boolean isActualParameterList(String s)

isFormalParameterList

public static final boolean isFormalParameterList(String s)

matchGJIdent

private static final void matchGJIdent(Signature.MyByteArrayInputStream in,
                                       StringBuffer buf)

matchIdent

private static final void matchIdent(Signature.MyByteArrayInputStream in,
                                     StringBuffer buf)

setSignatureIndex

public final void setSignatureIndex(int signature_index)
Parameters:
signature_index - the index info the constant pool of this signature

toString

public final String toString()
Overrides:
toString in interface Attribute
Returns:
String representation

translate

public static String translate(String s)