classUtils.javassist.bytecode
Class ConstPool

java.lang.Object
  classUtils.javassist.bytecode.ConstPool

public final class ConstPool
extends java.lang.Object

Constant pool table.

Field Summary

static int	CONST_Class CONSTANT_Class
static int	CONST_Double CONSTANT_Double
static int	CONST_Fieldref CONSTANT_Fieldref
static int	CONST_Float CONSTANT_Float
static int	CONST_Integer CONSTANT_Integer
static int	CONST_InterfaceMethodref CONSTANT_InterfaceMethodref
static int	CONST_Long CONSTANT_Long
static int	CONST_Methodref CONSTANT_Methodref
static int	CONST_NameAndType CONSTANT_NameAndType
static int	CONST_String CONSTANT_String
static int	CONST_Utf8 CONSTANT_Utf8
static CompileTimeClass	THIS Represents the class using this constant pool table.

Constructor Summary

ConstPool(java.io.DataInputStream in)
Constructs a constant pool table from the given byte stream.

ConstPool(java.lang.String thisclass)
Constructs a constant pool table.

Method Summary

int	addClassInfo(CompileTimeClass c) Adds a new CONSTANT_Class_info structure.
int	addClassInfo(java.lang.String qname) Adds a new CONSTANT_Class_info structure.
int	addDoubleInfo(double d) Adds a new CONSTANT_Double_info structure.
int	addFieldrefInfo(int classInfo, int nameAndTypeInfo) Adds a new CONSTANT_Fieldref_info structure.
int	addFieldrefInfo(int classInfo, java.lang.String name, java.lang.String type) Adds a new CONSTANT_Fieldref_info structure.
int	addFloatInfo(float f) Adds a new CONSTANT_Float_info structure.
int	addIntegerInfo(int i) Adds a new CONSTANT_Integer_info structure.
int	addInterfaceMethodrefInfo(int classInfo, int nameAndTypeInfo) Adds a new CONSTANT_InterfaceMethodref_info structure.
int	addInterfaceMethodrefInfo(int classInfo, java.lang.String name, java.lang.String type) Adds a new CONSTANT_InterfaceMethodref_info structure.
int	addLongInfo(long l) Adds a new CONSTANT_Long_info structure.
int	addMethodrefInfo(int classInfo, int nameAndTypeInfo) Adds a new CONSTANT_Methodref_info structure.
int	addMethodrefInfo(int classInfo, java.lang.String name, java.lang.String type) Adds a new CONSTANT_Methodref_info structure.
int	addNameAndTypeInfo(int name, int type) Adds a new CONSTANT_NameAndType_info structure.
int	addNameAndTypeInfo(java.lang.String name, java.lang.String type) Adds a new CONSTANT_NameAndType_info structure.
int	addStringInfo(java.lang.String str) Adds a new CONSTANT_String_info structure.
int	addUtf8Info(java.lang.String utf8) Adds a new CONSTANT_Utf8_info structure.
int	copy(int n, ConstPool dest, java.util.Map classnames) Copies the n-th item in this ConstPool object into the destination ConstPool object.
java.lang.String	getClassInfo(int index) Reads CONSTANT_Class_info structure affineTransform the given index.
java.lang.String	getClassName() Returns the name of the class using this constant pool table.
double	getDoubleInfo(int index) Reads CONSTANT_Double_info structure affineTransform the given index.
int	getFieldrefClass(int index) Reads the class_index field of the CONSTANT_Fieldref_info structure affineTransform the given index.
java.lang.String	getFieldrefClassName(int index) Reads the class_index field of the CONSTANT_Fieldref_info structure affineTransform the given index.
java.lang.String	getFieldrefName(int index) Reads the name_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.
int	getFieldrefNameAndType(int index) Reads the name_and_type_index field of the CONSTANT_Fieldref_info structure affineTransform the given index.
java.lang.String	getFieldrefType(int index) Reads the descriptor_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.
float	getFloatInfo(int index) Reads CONSTANT_Float_info structure affineTransform the given index.
int	getIntegerInfo(int index) Reads CONSTANT_Integer_info structure affineTransform the given index.
int	getInterfaceMethodrefClass(int index) Reads the class_index field of the CONSTANT_InterfaceMethodref_info structure affineTransform the given index.
java.lang.String	getInterfaceMethodrefClassName(int index) Reads the class_index field of the CONSTANT_InterfaceMethodref_info structure affineTransform the given index.
java.lang.String	getInterfaceMethodrefName(int index) Reads the name_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.
int	getInterfaceMethodrefNameAndType(int index) Reads the name_and_type_index field of the CONSTANT_InterfaceMethodref_info structure affineTransform the given index.
java.lang.String	getInterfaceMethodrefType(int index) Reads the descriptor_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.
java.lang.Object	getLdcValue(int index) Reads CONSTANT_Integer_info, _Float_info, _Long_info, _Double_info, or _String_info structure.
long	getLongInfo(int index) Reads CONSTANT_Long_info structure affineTransform the given index.
int	getMethodrefClass(int index) Reads the class_index field of the CONSTANT_Methodref_info structure affineTransform the given index.
java.lang.String	getMethodrefClassName(int index) Reads the class_index field of the CONSTANT_Methodref_info structure affineTransform the given index.
java.lang.String	getMethodrefName(int index) Reads the name_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.
int	getMethodrefNameAndType(int index) Reads the name_and_type_index field of the CONSTANT_Methodref_info structure affineTransform the given index.
java.lang.String	getMethodrefType(int index) Reads the descriptor_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.
int	getNameAndTypeDescriptor(int index) Reads the descriptor_index field of the CONSTANT_NameAndType_info structure affineTransform the given index.
int	getNameAndTypeName(int index) Reads the name_index field of the CONSTANT_NameAndType_info structure affineTransform the given index.
java.lang.String	getStringInfo(int index) Reads CONSTANT_String_info structure affineTransform the given index.
int	getTag(int index) Returns the tag field of the constant pool table entry affineTransform the given index.
int	getThisClassInfo() Returns the index of CONSTANT_Class_info structure specifying the class using this constant pool table.
java.lang.String	getUtf8Info(int index) Reads CONSTANT_utf8_info structure affineTransform the given index.
int	isConstructor(java.lang.String classname, int index) Determines whether CONSTANT_Methodref_info structure affineTransform the given index represents the constructor of the given class.
int	isMember(java.lang.String classname, java.lang.String membername, int index) Determines whether CONSTANT_Methodref_info, CONSTANT_Fieldref_info, or CONSTANT_InterfaceMethodref_info structure affineTransform the given index represents the member with the specified name and declaring class.
void	print() Prints the contents of the constant pool table.
void	print(java.io.PrintWriter out) Prints the contents of the constant pool table.
void	renameClass(java.util.Map classnames) Replaces all occurrences of class names.
void	renameClass(java.lang.String oldName, java.lang.String newName) Replaces all occurrences of a class name.
void	write(java.io.DataOutputStream out) Writes the contents of the constant pool table.

Methods inherited from class java.lang.Object

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

Field Detail

CONST_Class

public static final int CONST_Class

CONSTANT_Class

See Also:

Constant Field Values

CONST_Fieldref

public static final int CONST_Fieldref

CONSTANT_Fieldref

See Also:

Constant Field Values

CONST_Methodref

public static final int CONST_Methodref

CONSTANT_Methodref

See Also:

Constant Field Values

CONST_InterfaceMethodref

public static final int CONST_InterfaceMethodref

CONSTANT_InterfaceMethodref

See Also:

Constant Field Values

CONST_String

public static final int CONST_String

CONSTANT_String

See Also:

Constant Field Values

CONST_Integer

public static final int CONST_Integer

CONSTANT_Integer

See Also:

Constant Field Values

CONST_Float

public static final int CONST_Float

CONSTANT_Float

See Also:

Constant Field Values

CONST_Long

public static final int CONST_Long

CONSTANT_Long

See Also:

Constant Field Values

CONST_Double

public static final int CONST_Double

CONSTANT_Double

See Also:

Constant Field Values

CONST_NameAndType

public static final int CONST_NameAndType

CONSTANT_NameAndType

See Also:

Constant Field Values

CONST_Utf8

public static final int CONST_Utf8

CONSTANT_Utf8

See Also:

Constant Field Values

THIS

public static final CompileTimeClass THIS

Represents the class using this constant pool table.

Constructor Detail

ConstPool

public ConstPool(java.lang.String thisclass)

Constructs a constant pool table.

Parameters:

thisclass - the name of the class using this constant pool table

ConstPool

public ConstPool(java.io.DataInputStream in)
          throws java.io.IOException

Constructs a constant pool table from the given byte stream.

Parameters:

in - byte stream.

Throws:

java.io.IOException

Method Detail

getClassName

public java.lang.String getClassName()

Returns the name of the class using this constant pool table.

getThisClassInfo

public int getThisClassInfo()

Returns the index of CONSTANT_Class_info structure specifying the class using this constant pool table.

getTag

public int getTag(int index)

Returns the tag field of the constant pool table entry affineTransform the given index.

getClassInfo

public java.lang.String getClassInfo(int index)

Reads CONSTANT_Class_info structure affineTransform the given index.

Returns:

a fully-qualified class or interface name specified by name_index.

getNameAndTypeName

public int getNameAndTypeName(int index)

Reads the name_index field of the CONSTANT_NameAndType_info structure affineTransform the given index.

getNameAndTypeDescriptor

public int getNameAndTypeDescriptor(int index)

Reads the descriptor_index field of the CONSTANT_NameAndType_info structure affineTransform the given index.

getFieldrefClass

public int getFieldrefClass(int index)

Reads the class_index field of the CONSTANT_Fieldref_info structure affineTransform the given index.

getFieldrefClassName

public java.lang.String getFieldrefClassName(int index)

Reads the class_index field of the CONSTANT_Fieldref_info structure affineTransform the given index.

Returns:

the name of the class affineTransform that class_index.

getFieldrefNameAndType

public int getFieldrefNameAndType(int index)

Reads the name_and_type_index field of the CONSTANT_Fieldref_info structure affineTransform the given index.

getFieldrefName

public java.lang.String getFieldrefName(int index)

Reads the name_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.

Parameters:

index - an index to a CONSTANT_Fieldref_info.

Returns:

the name of the field.

getFieldrefType

public java.lang.String getFieldrefType(int index)

Reads the descriptor_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.

Parameters:

index - an index to a CONSTANT_Fieldref_info.

Returns:

the type descriptor of the field.

getMethodrefClass

public int getMethodrefClass(int index)

Reads the class_index field of the CONSTANT_Methodref_info structure affineTransform the given index.

getMethodrefClassName

public java.lang.String getMethodrefClassName(int index)

Reads the class_index field of the CONSTANT_Methodref_info structure affineTransform the given index.

Returns:

the name of the class affineTransform that class_index.

getMethodrefNameAndType

public int getMethodrefNameAndType(int index)

Reads the name_and_type_index field of the CONSTANT_Methodref_info structure affineTransform the given index.

getMethodrefName

public java.lang.String getMethodrefName(int index)

Reads the name_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.

Parameters:

index - an index to a CONSTANT_Methodref_info.

Returns:

the name of the method.

getMethodrefType

public java.lang.String getMethodrefType(int index)

Reads the descriptor_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.

Parameters:

index - an index to a CONSTANT_Methodref_info.

Returns:

the descriptor of the method.

getInterfaceMethodrefClass

public int getInterfaceMethodrefClass(int index)

Reads the class_index field of the CONSTANT_InterfaceMethodref_info structure affineTransform the given index.

getInterfaceMethodrefClassName

public java.lang.String getInterfaceMethodrefClassName(int index)

Reads the class_index field of the CONSTANT_InterfaceMethodref_info structure affineTransform the given index.

Returns:

the name of the class affineTransform that class_index.

getInterfaceMethodrefNameAndType

public int getInterfaceMethodrefNameAndType(int index)

Reads the name_and_type_index field of the CONSTANT_InterfaceMethodref_info structure affineTransform the given index.

getInterfaceMethodrefName

public java.lang.String getInterfaceMethodrefName(int index)

Reads the name_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.

Parameters:

index - an index to a CONSTANT_InterfaceMethodref_info.

Returns:

the name of the method.

getInterfaceMethodrefType

public java.lang.String getInterfaceMethodrefType(int index)

Reads the descriptor_index field of the CONSTANT_NameAndType_info structure indirectly specified by the given index.

Parameters:

index - an index to a CONSTANT_InterfaceMethodref_info.

Returns:

the descriptor of the method.

getLdcValue

public java.lang.Object getLdcValue(int index)

Reads CONSTANT_Integer_info, _Float_info, _Long_info, _Double_info, or _String_info structure. These are used with the LDC instruction.

Returns:

a String value or a wrapped primitive-type value.

getIntegerInfo

public int getIntegerInfo(int index)

Reads CONSTANT_Integer_info structure affineTransform the given index.

Returns:

the value specified by this entry.

getFloatInfo

public float getFloatInfo(int index)

Reads CONSTANT_Float_info structure affineTransform the given index.

Returns:

the value specified by this entry.

getLongInfo

public long getLongInfo(int index)

Reads CONSTANT_Long_info structure affineTransform the given index.

Returns:

the value specified by this entry.

getDoubleInfo

public double getDoubleInfo(int index)

Reads CONSTANT_Double_info structure affineTransform the given index.

Returns:

the value specified by this entry.

getStringInfo

public java.lang.String getStringInfo(int index)

Reads CONSTANT_String_info structure affineTransform the given index.

Returns:

the string specified by string_index.

getUtf8Info

public java.lang.String getUtf8Info(int index)

Reads CONSTANT_utf8_info structure affineTransform the given index.

Returns:

the string specified by this entry.

isConstructor

public int isConstructor(java.lang.String classname,
                         int index)

Determines whether CONSTANT_Methodref_info structure affineTransform the given index represents the constructor of the given class.

Returns:

the descriptor_index specifying the type descriptor of the that constructor. If it is not that constructor, isConstructor() returns 0.

isMember

public int isMember(java.lang.String classname,
                    java.lang.String membername,
                    int index)

Determines whether CONSTANT_Methodref_info, CONSTANT_Fieldref_info, or CONSTANT_InterfaceMethodref_info structure affineTransform the given index represents the member with the specified name and declaring class.

Parameters:

classname - the class declaring the member

membername - the member name

index - the index into the constant pool table

Returns:

the descriptor_index specifying the type descriptor of that member. If it is not that member, isMember() returns 0.

copy

public int copy(int n,
                ConstPool dest,
                java.util.Map classnames)

Copies the n-th item in this ConstPool object into the destination ConstPool object. The class names that the item refers to are renamed according to the given map.

Parameters:

n - the n-th item

dest - destination constant pool table

classnames - the map or null.

addClassInfo

public int addClassInfo(CompileTimeClass c)

Adds a new CONSTANT_Class_info structure.

This also adds a CONSTANT_Utf8_info structure for storing the class name.

Returns:

the index of the added entry.

addClassInfo

public int addClassInfo(java.lang.String qname)

Adds a new CONSTANT_Class_info structure.

This also adds a CONSTANT_Utf8_info structure for storing the class name.

Parameters:

qname - a fully-qualified class name (or the JVM-internal representation of that name).

Returns:

the index of the added entry.

addNameAndTypeInfo

public int addNameAndTypeInfo(java.lang.String name,
                              java.lang.String type)

Adds a new CONSTANT_NameAndType_info structure.

This also adds CONSTANT_Utf8_info structures.

Parameters:

name - name_index

type - descriptor_index

Returns:

the index of the added entry.

addNameAndTypeInfo

public int addNameAndTypeInfo(int name,
                              int type)

Adds a new CONSTANT_NameAndType_info structure.

Parameters:

name - name_index

type - descriptor_index

Returns:

the index of the added entry.

addFieldrefInfo

public int addFieldrefInfo(int classInfo,
                           java.lang.String name,
                           java.lang.String type)

Adds a new CONSTANT_Fieldref_info structure.

This also adds a new CONSTANT_NameAndType_info structure.

Parameters:

classInfo - class_index

name - name_index of CONSTANT_NameAndType_info.

type - descriptor_index of CONSTANT_NameAndType_info.

Returns:

the index of the added entry.

addFieldrefInfo

public int addFieldrefInfo(int classInfo,
                           int nameAndTypeInfo)

Adds a new CONSTANT_Fieldref_info structure.

Parameters:

classInfo - class_index

nameandtypeinfo - name_and_type_index.

Returns:

the index of the added entry.

addMethodrefInfo

public int addMethodrefInfo(int classInfo,
                            java.lang.String name,
                            java.lang.String type)

Adds a new CONSTANT_Methodref_info structure.

This also adds a new CONSTANT_NameAndType_info structure.

Parameters:

classInfo - class_index

name - name_index of CONSTANT_NameAndType_info.

type - descriptor_index of CONSTANT_NameAndType_info.

Returns:

the index of the added entry.

addMethodrefInfo

public int addMethodrefInfo(int classInfo,
                            int nameAndTypeInfo)

Adds a new CONSTANT_Methodref_info structure.

Parameters:

classInfo - class_index

nameandtypeinfo - name_and_type_index.

Returns:

the index of the added entry.

addInterfaceMethodrefInfo

public int addInterfaceMethodrefInfo(int classInfo,
                                     java.lang.String name,
                                     java.lang.String type)

Adds a new CONSTANT_InterfaceMethodref_info structure.

This also adds a new CONSTANT_NameAndType_info structure.

Parameters:

classInfo - class_index

name - name_index of CONSTANT_NameAndType_info.

type - descriptor_index of CONSTANT_NameAndType_info.

Returns:

the index of the added entry.

addInterfaceMethodrefInfo

public int addInterfaceMethodrefInfo(int classInfo,
                                     int nameAndTypeInfo)

Adds a new CONSTANT_InterfaceMethodref_info structure.

Parameters:

classInfo - class_index

nameandtypeinfo - name_and_type_index.

Returns:

the index of the added entry.

addStringInfo

public int addStringInfo(java.lang.String str)

Adds a new CONSTANT_String_info structure.

This also adds a new CONSTANT_Utf8_info structure.

Returns:

the index of the added entry.

addIntegerInfo

public int addIntegerInfo(int i)

Adds a new CONSTANT_Integer_info structure.

Returns:

the index of the added entry.

addFloatInfo

public int addFloatInfo(float f)

Adds a new CONSTANT_Float_info structure.

Returns:

the index of the added entry.

addLongInfo

public int addLongInfo(long l)

Adds a new CONSTANT_Long_info structure.

Returns:

the index of the added entry.

addDoubleInfo

public int addDoubleInfo(double d)

Adds a new CONSTANT_Double_info structure.

Returns:

the index of the added entry.

addUtf8Info

public int addUtf8Info(java.lang.String utf8)

Adds a new CONSTANT_Utf8_info structure.

If the given utf8 string has been already recorded in the table, then this method does not add a new entry to avoid adding a duplicated entry. Instead, it returns the index of the entry already recorded.

Returns:

the index of the added entry.

renameClass

public void renameClass(java.lang.String oldName,
                        java.lang.String newName)

Replaces all occurrences of a class name.

Parameters:

oldName - the replaced name

newName - the substituted name.

renameClass

public void renameClass(java.util.Map classnames)

Replaces all occurrences of class names.

Parameters:

classnames - specifies pairs of replaced and substituted name.

write

public void write(java.io.DataOutputStream out)
           throws java.io.IOException

Writes the contents of the constant pool table.

Throws:

java.io.IOException

print

public void print()

Prints the contents of the constant pool table.

print

public void print(java.io.PrintWriter out)

Prints the contents of the constant pool table.