org.objectweb.asm
public class Attribute extends Object
Field Summary | |
---|---|
String | type
The type of this attribute. |
Constructor Summary | |
---|---|
protected | Attribute(String type)
Constructs a new empty attribute.
|
Method Summary | |
---|---|
protected Label[] | getLabels()
Returns the labels corresponding to this attribute.
|
boolean | isCodeAttribute()
Returns true if this type of attribute is a code attribute.
|
boolean | isUnknown()
Returns true if this type of attribute is unknown. |
protected Attribute | read(ClassReader cr, int off, int len, char[] buf, int codeOff, Label[] labels)
Reads a type attribute. |
protected ByteVector | write(ClassWriter cw, byte[] code, int len, int maxStack, int maxLocals)
Returns the byte array form of this attribute.
|
Parameters: type the type of the attribute.
Returns: the labels corresponding to this attribute, or null if this attribute is not a code attribute that contains labels.
Returns: true if this type of attribute is a code attribute.
Returns: true if this type of attribute is unknown.
type
attribute. This method must return a new
Attribute object, of type type
, corresponding to
the len bytes starting at the given offset, in the given class
reader.
Parameters: cr the class that contains the attribute to be read. off index of the first byte of the attribute's content in cr.b
. The 6 attribute header bytes, containing the
type and the length of the attribute, are not taken into account
here. len the length of the attribute's content. buf buffer to be used to call
readUTF8
,
(int,char[]) readClass
or
readConst
. codeOff index of the first byte of code's attribute content in
cr.b
, or -1 if the attribute to be read is
not a code attribute. The 6 attribute header bytes, containing the
type and the length of the attribute, are not taken into account
here. labels the labels of the method's code, or null if the
attribute to be read is not a code attribute.
Returns: a new Attribute object corresponding to the given bytes.
Parameters: cw the class to which this attribute must be added. This parameter can be used to add to the constant pool of this class the items that corresponds to this attribute. code the bytecode of the method corresponding to this code attribute, or null if this attribute is not a code attributes. len the length of the bytecode of the method corresponding to this code attribute, or null if this attribute is not a code attribute. maxStack the maximum stack size of the method corresponding to this code attribute, or -1 if this attribute is not a code attribute. maxLocals the maximum number of local variables of the method corresponding to this code attribute, or -1 if this attribute is not a code attribute.
Returns: the byte array form of this attribute.