Package javassist.bytecode

Class AttributeInfo

java.lang.Object

javassist.bytecode.AttributeInfo

Direct Known Subclasses:

AnnotationDefaultAttribute, AnnotationsAttribute, BootstrapMethodsAttribute, CodeAttribute, ConstantAttribute, DeprecatedAttribute, EnclosingMethodAttribute, ExceptionsAttribute, InnerClassesAttribute, LineNumberAttribute, LocalVariableAttribute, MethodParametersAttribute, NestHostAttribute, NestMembersAttribute, ParameterAnnotationsAttribute, SignatureAttribute, SourceFileAttribute, StackMap, StackMapTable, SyntheticAttribute, TypeAnnotationsAttribute

public class AttributeInfo
extends Object

attribute_info structure.

See Also:

• ClassFile.getAttribute(String)
• MethodInfo.getAttribute(String)
• FieldInfo.getAttribute(String)

Field Summary

Fields

Modifier and Type	Field	Description
protected ConstPool	constPool
(package private) byte[]	info
(package private) int	name

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AttributeInfo(ConstPool cp, int attrname, byte[] attrinfo)
protected	AttributeInfo(ConstPool cp, int n, DataInputStream in)
protected	AttributeInfo(ConstPool cp, String attrname)
	AttributeInfo(ConstPool cp, String attrname, byte[] attrinfo)	Constructs an attribute_info structure.

Method Summary

Modifier and Type	Method	Description
AttributeInfo	copy(ConstPool newCp, Map<String,String> classnames)	Makes a copy.
(package private) static List<AttributeInfo>	copyAll(List<AttributeInfo> attributes, ConstPool cp)
byte[]	get()	Returns the info field of this attribute_info structure.
ConstPool	getConstPool()	Returns a constant pool table.
(package private) static int	getLength(List<AttributeInfo> attributes)
String	getName()	Returns an attribute name.
(package private) static void	getRefClasses(List<AttributeInfo> attributes, Map<String,String> classnames)
(package private) void	getRefClasses(Map<String,String> classnames)
int	length()	Returns the length of this attribute_info structure.
(package private) static AttributeInfo	lookup(List<AttributeInfo> attributes, String name)
(package private) static AttributeInfo	read(ConstPool cp, DataInputStream in)
(package private) static AttributeInfo	remove(List<AttributeInfo> attributes, String name)
(package private) void	renameClass(String oldname, String newname)
(package private) static void	renameClass(List<AttributeInfo> attributes, String oldname, String newname)
(package private) static void	renameClass(List<AttributeInfo> attributes, Map<String,String> classnames)
(package private) void	renameClass(Map<String,String> classnames)
void	set(byte[] newinfo)	Sets the info field of this attribute_info structure.
(package private) void	write(DataOutputStream out)
(package private) static void	writeAll(List<AttributeInfo> attributes, DataOutputStream out)

Methods inherited from class java.lang.Object

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

Field Details

constPool

protected ConstPool constPool

name

int name

info

byte[] info

Constructor Details

AttributeInfo

protected AttributeInfo(ConstPool cp,
 int attrname,
 byte[] attrinfo)

AttributeInfo

protected AttributeInfo(ConstPool cp,
 String attrname)

AttributeInfo

public AttributeInfo(ConstPool cp,
 String attrname,
 byte[] attrinfo)

Constructs an attribute_info structure.

Parameters:

cp - constant pool table

attrname - attribute name

attrinfo - info field of attribute_info structure.

AttributeInfo

protected AttributeInfo(ConstPool cp,
 int n,
 DataInputStream in)
                 throws IOException

Throws:

IOException

Method Details

read

static AttributeInfo read(ConstPool cp,
 DataInputStream in)
                   throws IOException

Throws:

IOException

getName

public String getName()

Returns an attribute name.

getConstPool

public ConstPool getConstPool()

Returns a constant pool table.

length

public int length()

Returns the length of this attribute_info structure. The returned value is attribute_length + 6.

get

public byte[] get()

Returns the info field of this attribute_info structure.

This method is not available if the object is an instance of CodeAttribute.

set

public void set(byte[] newinfo)

Sets the info field of this attribute_info structure.

This method is not available if the object is an instance of CodeAttribute.

copy

public AttributeInfo copy(ConstPool newCp,
 Map<String,String> classnames)

Makes a copy. Class names are replaced according to the given Map object.

Parameters:

newCp - the constant pool table used by the new copy.

classnames - pairs of replaced and substituted class names.

write

void write(DataOutputStream out)
    throws IOException

Throws:

IOException

getLength

static int getLength(List<AttributeInfo> attributes)

lookup

static AttributeInfo lookup(List<AttributeInfo> attributes,
 String name)

remove

static AttributeInfo remove(List<AttributeInfo> attributes,
 String name)

writeAll

static void writeAll(List<AttributeInfo> attributes,
 DataOutputStream out)
              throws IOException

Throws:

IOException

copyAll

static List<AttributeInfo> copyAll(List<AttributeInfo> attributes,
 ConstPool cp)

renameClass

void renameClass(String oldname,
 String newname)

renameClass

void renameClass(Map<String,String> classnames)

renameClass

static void renameClass(List<AttributeInfo> attributes,
 String oldname,
 String newname)

renameClass

static void renameClass(List<AttributeInfo> attributes,
 Map<String,String> classnames)

getRefClasses

void getRefClasses(Map<String,String> classnames)

getRefClasses

static void getRefClasses(List<AttributeInfo> attributes,
 Map<String,String> classnames)