Package com.yworks.yguard.obf.classfile

Class CodeAttrInfo

java.lang.Object

com.yworks.yguard.obf.classfile.AttrInfo

com.yworks.yguard.obf.classfile.CodeAttrInfo

All Implemented Interfaces:

ClassConstants

public class CodeAttrInfo
extends AttrInfo

Representation of an attribute.

Field Summary

Fields

Modifier and Type	Field	Description
protected AttrInfo[]	attributes	The Attributes.
static int	CONSTANT_FIELD_SIZE	The constant CONSTANT_FIELD_SIZE.
protected int	u2attributesCount	The attributes count.

Fields inherited from class com.yworks.yguard.obf.classfile.AttrInfo

owner, u4attrLength

Fields inherited from interface com.yworks.yguard.obf.classfile.ClassConstants

ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ATTR_AnnotationDefault, ATTR_BootstrapMethods, ATTR_Bridge, ATTR_Code, ATTR_ConstantValue, ATTR_Deprecated, ATTR_EnclosingMethod, ATTR_Enum, ATTR_Exceptions, ATTR_InnerClasses, ATTR_LineNumberTable, ATTR_LocalVariableTable, ATTR_LocalVariableTypeTable, ATTR_MethodParameters, ATTR_Module, ATTR_ModuleMainClass, ATTR_ModulePackages, ATTR_NestHost, ATTR_NestMembers, ATTR_PermittedSubclasses, ATTR_Record, ATTR_RuntimeInvisibleAnnotations, ATTR_RuntimeInvisibleParameterAnnotations, ATTR_RuntimeInvisibleTypeAnnotations, ATTR_RuntimeVisibleAnnotations, ATTR_RuntimeVisibleParameterAnnotations, ATTR_RuntimeVisibleTypeAnnotations, ATTR_Signature, ATTR_SourceDebug, ATTR_SourceDebugExtension, ATTR_SourceFile, ATTR_StackMapTable, ATTR_Synthetic, ATTR_Unknown, ATTR_Varargs, CONSTANT_Class, CONSTANT_Double, CONSTANT_Dynamic, CONSTANT_Fieldref, CONSTANT_Float, CONSTANT_Integer, CONSTANT_InterfaceMethodref, CONSTANT_InvokeDynamic, CONSTANT_Long, CONSTANT_MethodHandle, CONSTANT_Methodref, CONSTANT_MethodType, CONSTANT_Module, CONSTANT_NameAndType, CONSTANT_Package, CONSTANT_String, CONSTANT_Utf8, KNOWN_ATTRS, MAGIC, MAJOR_VERSION, MINOR_VERSION_MAX, REF_getField, REF_getStatic, REF_invokeInterface, REF_invokeSpecial, REF_invokeStatic, REF_invokeVirtual, REF_newInvokeSpecial, REF_putField, REF_putStatic, REQUIRED_ATTRS

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CodeAttrInfo(ClassFile cf, int attrNameIndex, int attrLength)	Instantiates a new Code attr info.

Method Summary

Modifier and Type	Method	Description
protected int	getAttrInfoLength()	Return the length in bytes of the attribute.
protected java.lang.String	getAttrName()	Return the String name of the attribute; over-ride this in sub-classes.
protected void	markUtf8RefsInInfo(ConstantPool pool)	Check for references in the 'info' data to the constant pool and mark them.
protected void	readInfo(java.io.DataInput din)	Read the data following the header.
protected void	trimAttrsExcept(java.lang.String[] keepAttrs)	Trim attributes from the classfile ('Code', 'Exceptions', 'ConstantValue' are preserved, all others except the list in the String[] are killed).
void	writeInfo(java.io.DataOutput dout)	Export data following the header to a DataOutput stream.

Methods inherited from class com.yworks.yguard.obf.classfile.AttrInfo

create, getAttrNameIndex, markUtf8Refs, toString, write

Methods inherited from class java.lang.Object

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

Field Detail

CONSTANT_FIELD_SIZE

public static final int CONSTANT_FIELD_SIZE

The constant CONSTANT_FIELD_SIZE.

See Also:

Constant Field Values

u2attributesCount

protected int u2attributesCount

The attributes count.

attributes

protected AttrInfo[] attributes

The Attributes.

Constructor Detail

CodeAttrInfo

protected CodeAttrInfo(ClassFile cf,
                       int attrNameIndex,
                       int attrLength)

Instantiates a new Code attr info.

Parameters:

cf - the cf

attrNameIndex - the attr name index

attrLength - the attr length

Method Detail

getAttrInfoLength

protected int getAttrInfoLength()

Return the length in bytes of the attribute.

Overrides:

getAttrInfoLength in class AttrInfo

Returns:

the attr info length

getAttrName

protected java.lang.String getAttrName()

Return the String name of the attribute; over-ride this in sub-classes.

Overrides:

getAttrName in class AttrInfo

Returns:

the attr name

trimAttrsExcept

protected void trimAttrsExcept(java.lang.String[] keepAttrs)

Trim attributes from the classfile ('Code', 'Exceptions', 'ConstantValue' are preserved, all others except the list in the String[] are killed).

Overrides:

trimAttrsExcept in class AttrInfo

Parameters:

keepAttrs - the keep attrs

markUtf8RefsInInfo

protected void markUtf8RefsInInfo(ConstantPool pool)

Check for references in the 'info' data to the constant pool and mark them.

Overrides:

markUtf8RefsInInfo in class AttrInfo

Parameters:

pool - the pool

readInfo

protected void readInfo(java.io.DataInput din)
                 throws java.io.IOException

Read the data following the header.

Overrides:

readInfo in class AttrInfo

Parameters:

din - the din

Throws:

java.io.IOException - the io exception

writeInfo

public void writeInfo(java.io.DataOutput dout)
               throws java.io.IOException

Export data following the header to a DataOutput stream.

Overrides:

writeInfo in class AttrInfo

Parameters:

dout - the dout

Throws:

java.io.IOException - the io exception