程序包 cn.taketoday.bytecode.commons

类 ModuleHashesAttribute

java.lang.Object

cn.taketoday.bytecode.Attribute

cn.taketoday.bytecode.commons.ModuleHashesAttribute

public final class ModuleHashesAttribute
extends Attribute

A ModuleHashes attribute. This attribute is specific to the OpenJDK and may change in the future.

作者:

Remi Forax

字段概要

字段

修饰符和类型	字段	说明
String	algorithm	The name of the hashing algorithm.
List<byte[]>	hashes	The hash of the modules in modules.
List<String>	modules	A list of module names.

从类继承的字段 cn.taketoday.bytecode.Attribute

type

构造器概要

构造器

构造器	说明
ModuleHashesAttribute()	Constructs an empty ModuleHashesAttribute.
ModuleHashesAttribute(String algorithm, List<String> modules, List<byte[]> hashes)	Constructs a new ModuleHashesAttribute.

方法概要

修饰符和类型	方法	说明
protected Attribute	read(ClassReader classReader, int offset, int length, char[] charBuffer, int codeAttributeOffset, Label[] labels)	Reads a Attribute.type attribute.
protected ByteVector	write(ClassWriter classWriter, byte[] code, int codeLength, int maxStack, int maxLocals)	Returns the byte array form of the content of this attribute.

从类继承的方法 cn.taketoday.bytecode.Attribute

getLabels, isCodeAttribute, isUnknown

从类继承的方法 java.lang.Object

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

字段详细资料

algorithm

public String algorithm

The name of the hashing algorithm.

modules

public List<String> modules

A list of module names.

hashes

public List<byte[]> hashes

The hash of the modules in modules. The two lists must have the same size.

构造器详细资料

ModuleHashesAttribute

public ModuleHashesAttribute(String algorithm,
 List<String> modules,
 List<byte[]> hashes)

Constructs a new ModuleHashesAttribute.

参数:

algorithm - the name of the hashing algorithm.

modules - a list of module names.

hashes - the hash of the modules in 'modules'. The two lists must have the same size.

ModuleHashesAttribute

public ModuleHashesAttribute()

Constructs an empty ModuleHashesAttribute. This object can be passed as a prototype to the ClassReader.accept(ClassVisitor, Attribute[], int) method.

方法详细资料

read

protected Attribute read(ClassReader classReader,
 int offset,
 int length,
 char[] charBuffer,
 int codeAttributeOffset,
 Label[] labels)

从类复制的说明: Attribute

Reads a Attribute.type attribute. This method must return a new Attribute object, of type Attribute.type, corresponding to the 'length' bytes starting at 'offset', in the given ClassReader.

覆盖:

read 在类中 Attribute

参数:

classReader - the class that contains the attribute to be read.

offset - index of the first byte of the attribute's content in ClassReader. The 6 attribute header bytes (attribute_name_index and attribute_length) are not taken into account here.

length - the length of the attribute's content (excluding the 6 attribute header bytes).

charBuffer - the buffer to be used to call the ClassReader methods requiring a 'charBuffer' parameter.

codeAttributeOffset - index of the first byte of content of the enclosing Code attribute in ClassReader, or -1 if the attribute to be read is not a Code attribute. The 6 attribute header bytes (attribute_name_index and attribute_length) 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.

返回:

a new Attribute object corresponding to the specified bytes.

write

protected ByteVector write(ClassWriter classWriter,
 byte[] code,
 int codeLength,
 int maxStack,
 int maxLocals)

从类复制的说明: Attribute

Returns the byte array form of the content of this attribute. The 6 header bytes (attribute_name_index and attribute_length) must not be added in the returned ByteVector.

覆盖:

write 在类中 Attribute

参数:

classWriter - the class to which this attribute must be added. This parameter can be used to add the items that corresponds to this attribute to the constant pool of this class.

code - the bytecode of the method corresponding to this Code attribute, or null if this attribute is not a Code attribute. Corresponds to the 'code' field of the Code attribute.

codeLength - the length of the bytecode of the method corresponding to this code attribute, or 0 if this attribute is not a Code attribute. Corresponds to the 'code_length' field of the 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.

返回:

the byte array form of this attribute.