Attribute_info (emma 2.1.2 API)

java.lang.Object
- com.vladium.jcd.cls.attribute.Attribute_info

所有已实现的接口:

IClassFormatOutput, Cloneable

直接已知子类:

BridgeAttribute_info, CodeAttribute_info, ConstantValueAttribute_info, ExceptionsAttribute_info, GenericAttribute_info, InnerClassesAttribute_info, LineNumberTableAttribute_info, SourceFileAttribute_info, SyntheticAttribute_info
```
public abstract class Attribute_info
extends Object
implements Cloneable, IClassFormatOutput
```
Abstract base for all XXXAttribute_info structures. It also works in conjunction with GenericAttribute_info class to process all unrecognized attributes.
Attributes are used in the ClassDef, Field_info, Method_info, and CodeAttribute_info structures of the .class file format. All attributes have the following general format:
```
  attribute_info {
          u2 attribute_name_index;
          u4 attribute_length;
          u1 info[attribute_length];
  }
 
```
For all attributes, the attribute_name_index must be a valid unsigned 16-bit index into the constant pool of the class. The constant pool entry at attribute_name_index must be a CONSTANT_Utf8_info string representing the name of the attribute. The value of the attribute_length item indicates the length of the subsequent information in bytes. The length does not include the initial six bytes that contain the attribute_name_index and attribute_length items.
作者:

(C) 2001, Vlad Roubtsov

另请参阅:

GenericAttribute_info

字段概要

字段
限定符和类型	字段和说明
`static String`	`ATTRIBUTE_BRIDGE`
`static String`	`ATTRIBUTE_CODE`
`static String`	`ATTRIBUTE_CONSTANT_VALUE`
`static String`	`ATTRIBUTE_EXCEPTIONS`
`static String`	`ATTRIBUTE_INNERCLASSES`
`static String`	`ATTRIBUTE_LINE_NUMBER_TABLE`
`static String`	`ATTRIBUTE_SOURCEFILE`
`static String`	`ATTRIBUTE_SYNTHETIC`
`protected long`	`m_attribute_length`
`int`	`m_name_index` Constant pool index for `CONSTANT_Utf8_info` string representing the name of this attribute [always positive].

构造器概要

构造器
限定符构造器和说明

protected Attribute_info(int attribute_name_index, long attribute_length)

构造器
限定符	构造器和说明
`protected`	`Attribute_info(int attribute_name_index, long attribute_length)`

方法概要

所有方法静态方法实例方法抽象方法具体方法
限定符和类型	方法和说明
`abstract void`	`accept(IAttributeVisitor visitor, Object ctx)`
`Object`	`clone()` Chains to super.clone() and removes CloneNotSupportedException from the method signature.
`String`	`getName(ClassDef cls)` Returns the name for this attribute within the constant pool context of 'cls' class definition.
`abstract long`	`length()` Returns the total length of this attribute when converted to .class format [including the 6-byte header]
`static Attribute_info`	`new_Attribute_info(IConstantCollection constants, UDataInputStream bytes)` Parses out a single Attribute_info element out of .class data in 'bytes'.
`abstract String`	`toString()`
`void`	`writeInClassFormat(UDataOutputStream out)`

从类继承的方法 java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - ATTRIBUTE_CODE
```
public static final String ATTRIBUTE_CODE
```
    另请参阅:
    
    常量字段值
  - ATTRIBUTE_CONSTANT_VALUE
```
public static final String ATTRIBUTE_CONSTANT_VALUE
```
    另请参阅:
    
    常量字段值
  - ATTRIBUTE_LINE_NUMBER_TABLE
```
public static final String ATTRIBUTE_LINE_NUMBER_TABLE
```
    另请参阅:
    
    常量字段值
  - ATTRIBUTE_EXCEPTIONS
```
public static final String ATTRIBUTE_EXCEPTIONS
```
    另请参阅:
    
    常量字段值
  - ATTRIBUTE_SYNTHETIC
```
public static final String ATTRIBUTE_SYNTHETIC
```
    另请参阅:
    
    常量字段值
  - ATTRIBUTE_BRIDGE
```
public static final String ATTRIBUTE_BRIDGE
```
    另请参阅:
    
    常量字段值
  - ATTRIBUTE_SOURCEFILE
```
public static final String ATTRIBUTE_SOURCEFILE
```
    另请参阅:
    
    常量字段值
  - ATTRIBUTE_INNERCLASSES
```
public static final String ATTRIBUTE_INNERCLASSES
```
    另请参阅:
    
    常量字段值
  - m_name_index
```
public int m_name_index
```
    Constant pool index for CONSTANT_Utf8_info string representing the name of this attribute [always positive].
  - m_attribute_length
```
protected long m_attribute_length
```
- 构造器详细资料
  - Attribute_info
```
protected Attribute_info(int attribute_name_index,
                         long attribute_length)
```
- 方法详细资料
  - getName
```
public String getName(ClassDef cls)
```
    Returns the name for this attribute within the constant pool context of 'cls' class definition.
    
    参数:
    
    cls - class that contains this attribute
    
    返回:
    
    attribute name
  - length
```
public abstract long length()
```
    Returns the total length of this attribute when converted to .class format [including the 6-byte header]
  - accept
```
public abstract void accept(IAttributeVisitor visitor,
                            Object ctx)
```
  - toString
```
public abstract String toString()
```
    覆盖:
    
    toString 在类中 Object
  - new_Attribute_info
```
public static Attribute_info new_Attribute_info(IConstantCollection constants,
                                                UDataInputStream bytes)
                                         throws IOException
```
    Parses out a single Attribute_info element out of .class data in 'bytes'.
    
    参数:
    
    constants - constant pool for the parent class [may not be null; not validated]
    
    bytes - input .class data stream [may not be null; not validated]
    
    返回:
    
    a single parsed attribute
    
    抛出:
    
    IOException - on input errors
  - clone
```
public Object clone()
```
    Chains to super.clone() and removes CloneNotSupportedException from the method signature.
    
    覆盖:
    
    clone 在类中 Object
  - writeInClassFormat
```
public void writeInClassFormat(UDataOutputStream out)
                        throws IOException
```
    指定者:
    
    writeInClassFormat 在接口中 IClassFormatOutput
    
    抛出:
    
    IOException

类 Attribute_info

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

ATTRIBUTE_CODE

ATTRIBUTE_CONSTANT_VALUE

ATTRIBUTE_LINE_NUMBER_TABLE

ATTRIBUTE_EXCEPTIONS

ATTRIBUTE_SYNTHETIC

ATTRIBUTE_BRIDGE

ATTRIBUTE_SOURCEFILE

ATTRIBUTE_INNERCLASSES

m_name_index

m_attribute_length

构造器详细资料

Attribute_info

方法详细资料

getName

length

accept

toString

new_Attribute_info

clone

writeInClassFormat