fr.umlv.corosol.classfile.constant.impl
Class DefaultJConstantPool

java.lang.Object
  fr.umlv.corosol.classfile.constant.impl.DefaultJConstantPool

All Implemented Interfaces:

JConstantPool, JClassFileItem, JObject

public class DefaultJConstantPool
extends java.lang.Object
implements JConstantPool

The default implementation of the fr.umlv.corosol.classfile.constant.JConstantPool interface.

Author:

Christophe Deleray

Constructor Summary

DefaultJConstantPool()
Default constructor.

Method Summary

int	addConstant(JConstant constant) Adds the specified constant in this constant pool.
int	addConstantClass(java.lang.String className) Adds a new CONSTANT_Class_info entry corresponding to the specified class name.
int	addConstantDouble(double doubleValue) Adds a new CONSTANT_Double_info entry initialized with the specified value.
int	addConstantFieldref(java.lang.String className, java.lang.String name, java.lang.String desc) Adds a new CONSTANT_Fieldref_info entry.
int	addConstantFloat(float floatValue) Adds a new CONSTANT_Float_info entry initialized with the specified value.
int	addConstantInteger(int intValue) Adds a new CONSTANT_Integer_info entry initialized with the specified value.
int	addConstantInterfaceMethodref(java.lang.String className, java.lang.String name, java.lang.String desc) Adds a new CONSTANT_InterfaceMethodref_info entry.
int	addConstantLong(long longValue) Adds a new CONSTANT_Long_info entry initialized with the specified value.
int	addConstantMethodref(java.lang.String className, java.lang.String name, java.lang.String desc) Adds a new CONSTANT_Methodref_info entry.
int	addConstantNameAndType(java.lang.String name, java.lang.String descriptor) Adds a new CONSTANT_NameAndType_info entry.
int	addConstantString(java.lang.String string) Adds a new CONSTANT_String_info entry initialized with the specified string value.
int	addConstantUtf8(java.lang.String string) Adds a new CONSTANT_Utf8_info entry initialized with the specified string value.
JConstant	getConstant(int index) Returns the entry at the specified position in this constant pool.
JConstantPool	getConstantPool() Returns the constant pool of this classfile item.
JConstant[]	getConstants() Returns an array containing all the constant pool entries.
int	length() Returns the number of entries in this constant pool.
void	readItem(JClassFileInput in) Extracts the data of this classfile item via the specified input stream.
void	setConstantPool(JConstantPool constantPool) Sets the constant pool of this classfile item.
java.lang.String	toString() Returns a string representation of this constant pool, containing the String representation of each entry.
void	writeItem(JClassFileOutput out) Writes the data of this classfile part into a file via the specified output stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultJConstantPool

public DefaultJConstantPool()

Default constructor.

Method Detail

addConstant

public int addConstant(JConstant constant)

Adds the specified constant in this constant pool.

Specified by:

addConstant in interface JConstantPool

Parameters:

constant - entry to be added to this constant pool

Returns:

the index of this entry int this constant pool

addConstantUtf8

public int addConstantUtf8(java.lang.String string)

Adds a new CONSTANT_Utf8_info entry initialized with the specified string value.

Specified by:

addConstantUtf8 in interface JConstantPool

Parameters:

string - the string to be stored in the new entry

Returns:

the index of this new constant pool entry

addConstantString

public int addConstantString(java.lang.String string)

Adds a new CONSTANT_String_info entry initialized with the specified string value.

Specified by:

addConstantString in interface JConstantPool

Parameters:

string - the string to be stored in the new entry

Returns:

the index of this new constant pool entry

addConstantClass

public int addConstantClass(java.lang.String className)

Adds a new CONSTANT_Class_info entry corresponding to the specified class name.

Specified by:

addConstantClass in interface JConstantPool

Parameters:

className - a class name

Returns:

the index of this new constant pool entry

addConstantFieldref

public int addConstantFieldref(java.lang.String className,
                               java.lang.String name,
                               java.lang.String desc)

Adds a new CONSTANT_Fieldref_info entry.

Specified by:

addConstantFieldref in interface JConstantPool

Parameters:

className - the name of a class

name - the name of the field

desc - the descriptor of the field

Returns:

the index of this new constant pool entry

addConstantMethodref

public int addConstantMethodref(java.lang.String className,
                                java.lang.String name,
                                java.lang.String desc)

Adds a new CONSTANT_Methodref_info entry.

Specified by:

addConstantMethodref in interface JConstantPool

Parameters:

className - the name of a class

name - the name of the field

desc - the descriptor of the field

Returns:

the index of this new constant pool entry

addConstantInterfaceMethodref

public int addConstantInterfaceMethodref(java.lang.String className,
                                         java.lang.String name,
                                         java.lang.String desc)

Adds a new CONSTANT_InterfaceMethodref_info entry.

Specified by:

addConstantInterfaceMethodref in interface JConstantPool

Parameters:

className - the name of a class

name - the name of the interface method

desc - the descriptor of the interface method

Returns:

the index of this new constant pool entry

addConstantNameAndType

public int addConstantNameAndType(java.lang.String name,
                                  java.lang.String descriptor)

Adds a new CONSTANT_NameAndType_info entry.

Specified by:

addConstantNameAndType in interface JConstantPool

Parameters:

name - the name of a field or a method

descriptor - the descriptor of a field or a method

Returns:

the index of this new constant pool entry

addConstantInteger

public int addConstantInteger(int intValue)

Adds a new CONSTANT_Integer_info entry initialized with the specified value.

Specified by:

addConstantInteger in interface JConstantPool

Parameters:

intValue - the value to be stored in the new entry

Returns:

the index of this new constant pool entry

addConstantFloat

public int addConstantFloat(float floatValue)

Adds a new CONSTANT_Float_info entry initialized with the specified value.

Specified by:

addConstantFloat in interface JConstantPool

Parameters:

floatValue - the value to be stored in the new entry

Returns:

the index of this new constant pool entry

addConstantLong

public int addConstantLong(long longValue)

Adds a new CONSTANT_Long_info entry initialized with the specified value.

Specified by:

addConstantLong in interface JConstantPool

Parameters:

longValue - the value to be stored in the new entry

Returns:

the index of this new constant pool entry

addConstantDouble

public int addConstantDouble(double doubleValue)

Adds a new CONSTANT_Double_info entry initialized with the specified value.

Specified by:

addConstantDouble in interface JConstantPool

Parameters:

doubleValue - the value to be stored in the new entry

Returns:

the index of this new constant pool entry

length

public int length()

Returns the number of entries in this constant pool.

Specified by:

length in interface JConstantPool

Returns:

the number of entries in this constant pool

getConstant

public JConstant getConstant(int index)

Returns the entry at the specified position in this constant pool.

Specified by:

getConstant in interface JConstantPool

Parameters:

index - index of entry to return

Returns:

the entry at the specified position

getConstants

public JConstant[] getConstants()

Returns an array containing all the constant pool entries.

Specified by:

getConstants in interface JConstantPool

Returns:

an array containing all the constant pool entries.

toString

public java.lang.String toString()

Returns a string representation of this constant pool, containing the String representation of each entry.

Specified by:

toString in interface JConstantPool

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this constant pool

getConstantPool

public JConstantPool getConstantPool()

Returns the constant pool of this classfile item.

Specified by:

getConstantPool in interface JClassFileItem

setConstantPool

public void setConstantPool(JConstantPool constantPool)

Sets the constant pool of this classfile item.

Specified by:

setConstantPool in interface JClassFileItem

Parameters:

constantPool - the constant Pool

readItem

public void readItem(JClassFileInput in)
              throws java.io.IOException

Extracts the data of this classfile item via the specified input stream.

Specified by:

readItem in interface JClassFileItem

Parameters:

in - a class file input stream

Throws:

java.io.IOException - if an I/O error occurs when reading this classfile item datas

writeItem

public void writeItem(JClassFileOutput out)
               throws java.io.IOException

Writes the data of this classfile part into a file via the specified output stream.

Specified by:

writeItem in interface JClassFileItem

Parameters:

out - a class file output stream

Throws:

java.io.IOException - if an I/O error occurs when writing into the classfile