org.objectweb.asm.attrs

Class RuntimeVisibleParameterAnnotations

Known Direct Subclasses:
ASMRuntimeVisibleParameterAnnotations

public class RuntimeVisibleParameterAnnotations
extends Attribute

The RuntimeVisibleParameterAnnotations attribute is a variable length attribute in the attributes table of the method_info structure. The RuntimeVisibleParameterAnnotations attribute records runtime-visible Java programming language annotations on the parameters of the corresponding method. Each method_info structure may contain at most one RuntimeVisibleParameterAnnotations attribute, which records all the runtime-visible Java programming language annotations on the parameters of the corresponding method. The JVM must make these annotations available so they can be returned by the appropriate reflective APIs.

The RuntimeVisibleParameterAnnotations attribute has the following format:

   RuntimeVisibleParameterAnnotations_attribute {
     u2 attribute_name_index;
     u4 attribute_length;
     u1 num_parameters;
     {
       u2 num_annotations;
       annotation annotations[num_annotations];
     } parameter_annotations[num_parameters];
   }
 
 The items of the RuntimeVisibleParameterAnnotations structure are as follows:
 
annotation
Author:
Eugene Kuleshov
See Also:
JSR 175 : A Metadata Facility for the Java Programming Language

Field Summary

List
parameters
List of Lists that contains Annotation for each method parameter.

Fields inherited from class org.objectweb.asm.Attribute

next, type

Constructor Summary

RuntimeVisibleParameterAnnotations()

Method Summary

protected Attribute
read(ClassReader cr, int off, int len, char[] buf, int codeOff, Label[] labels)
Reads a type attribute.
String
toString()
protected ByteVector
write(ClassWriter cw, byte[] code, int len, int maxStack, int maxLocals)
Returns the byte array form of this attribute.

Methods inherited from class org.objectweb.asm.Attribute

getLabels, isUnknown, read, write

Field Details

parameters

public List parameters
List of Lists that contains Annotation for each method parameter.

Constructor Details

RuntimeVisibleParameterAnnotations

public RuntimeVisibleParameterAnnotations()

Method Details

read

protected Attribute read(ClassReader cr,
                         int off,
                         int len,
                         char[] buf,
                         int codeOff,
                         Label[] labels)
Reads a 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.
Overrides:
read in interface Attribute
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, 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.

toString

public String toString()

write

protected ByteVector write(ClassWriter cw,
                           byte[] code,
                           int len,
                           int maxStack,
                           int maxLocals)
Returns the byte array form of this attribute.
Overrides:
write in interface Attribute
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.