Package org.openjdk.asmtools.jdis

Class ConstantPool

java.lang.Object

org.openjdk.asmtools.jdis.ConstantPool

public class ConstantPool
extends Object

ConstantPool Class representing the ConstantPool

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	ConstantPool.Constant	Constant Base class of all constant entries
(package private) class	ConstantPool.CP_Double	CP_Double Constant entries that contain double-precision float data.
(package private) class	ConstantPool.CP_Float	CP_Float Constant entries that contain Float data.
(package private) class	ConstantPool.CP_Int	CP_Int Constant entries that contain Integer data.
(package private) class	ConstantPool.CP_Long	CP_Long Constant entries that contain LongInteger data.
(package private) class	ConstantPool.CP_Str	CP_Str Constant entries that contain String data.
(package private) class	ConstantPool.CPX	CPX Constant entries that contain a single constant-pool index.
(package private) class	ConstantPool.CPX2	CPX2 Constant entries that contain two constant-pool indices.
(package private) class	ConstantPool.Indent
static enum	ConstantPool.SUBTAG	SUBTAG A Tag descriptor of form method-handle constants
static enum	ConstantPool.TAG	TAG A Tag descriptor of constants in the constant pool

Field Summary

Fields

Modifier and Type	Field	Description
private ClassData	cd	Reference to the class data
private final ConstantPool.Indent	indent
ArrayList<ConstantPool.Constant>	pool	The actual pool of Constants
private boolean	printTAG
private static final Hashtable<Byte,ConstantPool.SUBTAG>	subtaghash
private static final Hashtable<Byte,ConstantPool.TAG>	taghash

Constructor Summary

Constructors

Constructor	Description
ConstantPool(ClassData cd)
ConstantPool(ClassData cd, int size)

Method Summary

Modifier and Type	Method	Description
private String	_getClassName(int nameIndex)	_getClassName Helper for getting class name.
String	ConstantStrValue(int cpx)	ConstantStrValue Safely gets the string value of any Constant at any CP index.
String	decodeClassDescriptor(int cpx)	decodeClassDescriptor Pulls the class name out of a string (at the CP index).
String	getClassName(int cpx)	getClassName Safely gets a Java class name from a ConstantClass from the CP at a given index.
String	getClassName(ConstantPool.CPX classConst)	getClassName Safely gets a Java class name from a ConstantClass from a CPX constant pool object.
String	getClassName(ConstantPool.CPX2 classConst)	getClassName Safely gets a Java class name from a ConstantClass from a CPX2 constant pool object.
ConstantPool.Constant	getConst(int cpx)	getConst Public getter - Safely gets a Constant from the CP at a given index.
String	getModule(int cpx)	getModule Public string val - Safely gets the string-rep of a ConstantModule from the CP at a given index.
String	getName(int cpx)	getTypeName Safely gets a Java name from a ConstantUTF8 from the CP at a given index.
String	getPackage(int cpx)	getPackage Public string val - Safely gets the string-rep of a ConstantPackage from the CP at a given index.
String	getPrintedTAG(ConstantPool.TAG tag)
String	getShortClassName(int cpx, String pkgPrefix)	getShortClassName shortens a class name (if the class is in the given package).
String	getShortClassName(String className, String pkgPrefix)	getShortClassName shortens a class name (if the class is in the given package).
String	getString(int cpx)	getString Public string val - Safely gets the string-rep of a ConstantUTF8 from the CP at a given index.
private boolean	inbounds(int cpx)	inbounds bounds-check a CP index.
void	print(PrintWriter out)	prints the entire constant pool.
(package private) void	PrintConstant(PrintWriter out, int cpx)	prints the Constant value at a given CP index.
void	printlnClassId(PrintWriter out, int cpx)	prints a constant value, with the print format based on the print options.
void	printlnClassId(PrintWriter out, int cpx, boolean addComma)
(package private) void	read(DataInputStream in)	read decodes a ConstantPool and it's constants from a data stream.
void	setPrintTAG(boolean value)
String	StringTag(int cpx)	StringTag Public string val - Safely gets the string-rep of a Constant from the CP at a given index.
String	StringValue(int cpx)	StringValue Safely gets the string value of any Constant at any CP index.
private String	subtagToString(int subtag)	subtagToString Getter that safely gets the string descriptor of a subtag

Methods inherited from class java.lang.Object

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

Field Details

taghash

private static final Hashtable<Byte,ConstantPool.TAG> taghash

subtaghash

private static final Hashtable<Byte,ConstantPool.SUBTAG> subtaghash

printTAG

private boolean printTAG

indent

private final ConstantPool.Indent indent

pool

public ArrayList<ConstantPool.Constant> pool

The actual pool of Constants

cd

private ClassData cd

Reference to the class data

Constructor Details

ConstantPool

public ConstantPool(ClassData cd)

ConstantPool

public ConstantPool(ClassData cd,
 int size)

Method Details

setPrintTAG

public void setPrintTAG(boolean value)

getPrintedTAG

public String getPrintedTAG(ConstantPool.TAG tag)

read

void read(DataInputStream in)
   throws IOException

read decodes a ConstantPool and it's constants from a data stream.

Throws:

IOException

inbounds

private boolean inbounds(int cpx)

inbounds bounds-check a CP index.

getConst

public ConstantPool.Constant getConst(int cpx)

getConst Public getter - Safely gets a Constant from the CP at a given index.

StringTag

public String StringTag(int cpx)

StringTag Public string val - Safely gets the string-rep of a Constant from the CP at a given index.

getString

public String getString(int cpx)

getString Public string val - Safely gets the string-rep of a ConstantUTF8 from the CP at a given index. Returns either null (if invalid), or the string value of the UTF8

getModule

public String getModule(int cpx)

getModule Public string val - Safely gets the string-rep of a ConstantModule from the CP at a given index. Returns either null (if invalid), or the string value of the ConstantModule

getPackage

public String getPackage(int cpx)

getPackage Public string val - Safely gets the string-rep of a ConstantPackage from the CP at a given index. Returns either null (if invalid), or the string value of the ConstantPackage

getName

public String getName(int cpx)

getTypeName Safely gets a Java name from a ConstantUTF8 from the CP at a given index. Returns either null (if invalid), or the Java name value of the UTF8

getClassName

public String getClassName(int cpx)

getClassName Safely gets a Java class name from a ConstantClass from the CP at a given index. Returns either the Java class name, or a CP index reference string.

getClassName

public String getClassName(ConstantPool.CPX2 classConst)

getClassName Safely gets a Java class name from a ConstantClass from a CPX2 constant pool object. (eg. Method/Field/Interface Ref) Returns either the Java class name, or a CP index reference string.

getClassName

public String getClassName(ConstantPool.CPX classConst)

getClassName Safely gets a Java class name from a ConstantClass from a CPX constant pool object. (eg. Class Ref) Returns either the Java class name, or a CP index reference string.

_getClassName

private String _getClassName(int nameIndex)

_getClassName Helper for getting class name. Checks bounds, does name conversion.

getShortClassName

public String getShortClassName(String className,
 String pkgPrefix)

getShortClassName shortens a class name (if the class is in the given package). works with a string-encoded classname.

getShortClassName

public String getShortClassName(int cpx,
 String pkgPrefix)

getShortClassName shortens a class name (if the class is in the given package). works with a CP index to a ConstantClass.

decodeClassDescriptor

public String decodeClassDescriptor(int cpx)

decodeClassDescriptor Pulls the class name out of a string (at the CP index). (drops any array descriptors, and the class descriptors ("L" and ";")

subtagToString

private String subtagToString(int subtag)

subtagToString Getter that safely gets the string descriptor of a subtag

StringValue

public String StringValue(int cpx)

StringValue Safely gets the string value of any Constant at any CP index.

ConstantStrValue

public String ConstantStrValue(int cpx)

ConstantStrValue Safely gets the string value of any Constant at any CP index. This string is either a Constant's String value, or a CP index reference string. The Constant string has a tag descriptor in the beginning.

print

public void print(PrintWriter out)
           throws IOException

prints the entire constant pool.

Throws:

IOException

PrintConstant

void PrintConstant(PrintWriter out,
 int cpx)

prints the Constant value at a given CP index.

printlnClassId

public void printlnClassId(PrintWriter out,
 int cpx)
                    throws IOException

prints a constant value, with the print format based on the print options.

Throws:

IOException

printlnClassId

public void printlnClassId(PrintWriter out,
 int cpx,
 boolean addComma)
                    throws IOException

Throws:

IOException