javassist.bytecode

Class SignatureAttribute

java.lang.Object

javassist.bytecode.AttributeInfo

javassist.bytecode.SignatureAttribute

public class SignatureAttribute
extends AttributeInfo

Signature_attribute.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SignatureAttribute.ArrayType Array types.
static class	SignatureAttribute.BaseType Primitive types.
static class	SignatureAttribute.ClassSignature Class signature.
static class	SignatureAttribute.ClassType Class types.
static class	SignatureAttribute.MethodSignature Method type signature.
static class	SignatureAttribute.NestedClassType Nested class types.
static class	SignatureAttribute.ObjectType Class types, array types, and type variables.
static class	SignatureAttribute.Type Primitive types and object types.
static class	SignatureAttribute.TypeArgument Type argument.
static class	SignatureAttribute.TypeParameter Formal type parameters.
static class	SignatureAttribute.TypeVariable Type variables.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	tag The name of this attribute "Signature".

Constructor Summary

Constructors

Constructor and Description
SignatureAttribute(ConstPool cp, java.lang.String signature) Constructs a Signature attribute.

Method Summary

Modifier and Type	Method and Description
AttributeInfo	copy(ConstPool newCp, java.util.Map classnames) Makes a copy.
java.lang.String	getSignature() Returns the generic signature indicated by signature_index.
void	setSignature(java.lang.String sig) Sets signature_index to the index of the given generic signature, which is added to a constant pool.
static SignatureAttribute.ClassSignature	toClassSignature(java.lang.String sig) Parses the given signature string as a class signature.
static SignatureAttribute.ObjectType	toFieldSignature(java.lang.String sig) Parses the given signature string as a field type signature.
static SignatureAttribute.MethodSignature	toMethodSignature(java.lang.String sig) Parses the given signature string as a method type signature.
static SignatureAttribute.Type	toTypeSignature(java.lang.String sig) Parses the given signature string as a type signature.

Methods inherited from class javassist.bytecode.AttributeInfo

get, getConstPool, getName, length, set

Methods inherited from class java.lang.Object

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

Field Detail

tag

public static final java.lang.String tag

The name of this attribute "Signature".

See Also:

Constant Field Values

Constructor Detail

SignatureAttribute

public SignatureAttribute(ConstPool cp,
                          java.lang.String signature)

Constructs a Signature attribute.

Parameters:

cp - a constant pool table.

signature - the signature represented by this attribute.

Method Detail

getSignature

public java.lang.String getSignature()

Returns the generic signature indicated by signature_index.

See Also:

toClassSignature(String), toMethodSignature(String), toFieldSignature(String)

setSignature

public void setSignature(java.lang.String sig)

Sets signature_index to the index of the given generic signature, which is added to a constant pool.

Parameters:

sig - new signature.

Since:

3.11

copy

public AttributeInfo copy(ConstPool newCp,
                          java.util.Map classnames)

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

Overrides:

copy in class AttributeInfo

Parameters:

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

classnames - pairs of replaced and substituted class names.

toClassSignature

public static SignatureAttribute.ClassSignature toClassSignature(java.lang.String sig)
                                                          throws BadBytecode

Parses the given signature string as a class signature.

Parameters:

sig - the signature obtained from the SignatureAttribute of a ClassFile.

Returns:

a tree-like data structure representing a class signature. It provides convenient accessor methods.

Throws:

BadBytecode - thrown when a syntactical error is found.

Since:

3.5

See Also:

getSignature()

toMethodSignature

public static SignatureAttribute.MethodSignature toMethodSignature(java.lang.String sig)
                                                            throws BadBytecode

Parses the given signature string as a method type signature.

Parameters:

sig - the signature obtained from the SignatureAttribute of a MethodInfo.

Returns:

@return a tree-like data structure representing a method signature. It provides convenient accessor methods.

Throws:

BadBytecode - thrown when a syntactical error is found.

Since:

3.5

See Also:

getSignature()

toFieldSignature

public static SignatureAttribute.ObjectType toFieldSignature(java.lang.String sig)
                                                      throws BadBytecode

Parses the given signature string as a field type signature.

Parameters:

sig - the signature string obtained from the SignatureAttribute of a FieldInfo.

Returns:

the field type signature.

Throws:

BadBytecode - thrown when a syntactical error is found.

Since:

3.5

See Also:

getSignature()

toTypeSignature

public static SignatureAttribute.Type toTypeSignature(java.lang.String sig)
                                               throws BadBytecode

Parses the given signature string as a type signature. The type signature is either the field type signature or a base type descriptor including void type.

Throws:

BadBytecode - thrown when a syntactical error is found.

Since:

3.18