com.ibm.wala.shrikeCT

Class ConstantValueWriter

java.lang.Object

com.ibm.wala.shrikeCT.ClassWriter.Element

com.ibm.wala.shrikeCT.ConstantValueWriter

public final class ConstantValueWriter
extends ClassWriter.Element

This class builds serializable ConstantValue attributes. These attributes are associated with final fields.

After constructing a ConstantValueWriter, you must call setValueCPIndex.

Constructor Summary

Constructors

Constructor and Description
ConstantValueWriter(ClassWriter w) Build an empty writer.
ConstantValueWriter(ClassWriter w, double v) Build an writer for a 'double' constant value.
ConstantValueWriter(ClassWriter w, float v) Build an writer for a 'float' constant value.
ConstantValueWriter(ClassWriter w, int v) Build an writer for an 'int' constant value.
ConstantValueWriter(ClassWriter w, long v) Build an writer for a 'long' constant value.
ConstantValueWriter(ClassWriter w, java.lang.String v) Build an writer for a 'String' constant value.

Method Summary

Modifier and Type	Method and Description
int	copyInto(byte[] buf, int offset) Copy the bytes into 'buf' at offset 'offset'.
int	getSize()
void	setDouble(double value) Set the constant value to a double.
void	setFloat(float value) Set the constant value to a float.
void	setInt(int value) Set the constant value to an int.
void	setLong(long value) Set the constant value to a long.
void	setString(java.lang.String value) Set the constant value to a String.
void	setValueCPIndex(int index) Set the index of the constant pool item holding the constant value.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantValueWriter

public ConstantValueWriter(ClassWriter w)

Build an empty writer.

Throws:

java.lang.IllegalArgumentException - if w is null

ConstantValueWriter

public ConstantValueWriter(ClassWriter w,
                           long v)

Build an writer for a 'long' constant value.

ConstantValueWriter

public ConstantValueWriter(ClassWriter w,
                           int v)

Build an writer for an 'int' constant value.

ConstantValueWriter

public ConstantValueWriter(ClassWriter w,
                           float v)

Build an writer for a 'float' constant value.

ConstantValueWriter

public ConstantValueWriter(ClassWriter w,
                           double v)

Build an writer for a 'double' constant value.

ConstantValueWriter

public ConstantValueWriter(ClassWriter w,
                           java.lang.String v)

Build an writer for a 'String' constant value.

Method Detail

getSize

public int getSize()

Specified by:

getSize in class ClassWriter.Element

Returns:

the number of bytes that will be generated.

copyInto

public int copyInto(byte[] buf,
                    int offset)
             throws java.lang.IllegalArgumentException

Description copied from class: ClassWriter.Element

Copy the bytes into 'buf' at offset 'offset'.

Specified by:

copyInto in class ClassWriter.Element

Returns:

the number of bytes copies, which must be equal to getSize()

Throws:

java.lang.IllegalArgumentException

setLong

public void setLong(long value)

Set the constant value to a long.

setDouble

public void setDouble(double value)

Set the constant value to a double.

setInt

public void setInt(int value)

Set the constant value to an int.

setFloat

public void setFloat(float value)

Set the constant value to a float.

setString

public void setString(java.lang.String value)

Set the constant value to a String.

setValueCPIndex

public void setValueCPIndex(int index)
                     throws java.lang.IllegalArgumentException

Set the index of the constant pool item holding the constant value.

Throws:

java.lang.IllegalArgumentException