harpoon.Interpret.Tree
Class StringPointer

java.lang.Object
  harpoon.Util.Tuple
      harpoon.Interpret.Tree.StringPointer

All Implemented Interfaces:

Serializable, Comparable

public class StringPointer
extends Tuple

The StringPointer class represents a pointer to an string constant. This pointer can be dereferenced with getValue().

Version:

$Id: StringPointer.java,v 1.2 2002/02/25 21:06:01 cananian Exp $

Author:

Duncan Bryce <duncan@lcs.mit.edu>

See Also:

Serialized Form

Field Summary

static int	ARRAY_PTR
static int	CLAZ_PTR
static int	CONST_PTR
static int	FIELD_PTR
static int	IFACE_PTR
static int	STRING_PTR
static int	UNDEF_PTR

Method Summary

harpoon.Interpret.Tree.Pointer	add(long offset) Throws an error, as StringPointers are constant.
boolean	equals(Object obj) Returns true if obj is a StringPointer that points to the same location as this StringPointer.
Object	getBase() Returns a Label representing the base of this StringPointer
long	getOffset() Returns the offset of this StringPointer.
Object	getValue() Returns the value obtained by dereferencing this StringPointer.
boolean	isConst() Always returns true.
boolean	isDerived() Always returns false.
int	kind() Returns an integer enumeration of the kind of this Pointer.
String	toString() Returns a human-readable description of this Tuple.
void	updateValue(Object value) Throws an error, as StringPointers are constant.

Methods inherited from class harpoon.Util.Tuple

asList, compareTo, hashCode, proj

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ARRAY_PTR

public static final int ARRAY_PTR

See Also:

Constant Field Values

CLAZ_PTR

public static final int CLAZ_PTR

See Also:

Constant Field Values

CONST_PTR

public static final int CONST_PTR

See Also:

Constant Field Values

FIELD_PTR

public static final int FIELD_PTR

See Also:

Constant Field Values

IFACE_PTR

public static final int IFACE_PTR

See Also:

Constant Field Values

STRING_PTR

public static final int STRING_PTR

See Also:

Constant Field Values

UNDEF_PTR

public static final int UNDEF_PTR

See Also:

Constant Field Values

Method Detail

add

public harpoon.Interpret.Tree.Pointer add(long offset)

Throws an error, as StringPointers are constant.

equals

public boolean equals(Object obj)

Returns true if obj is a StringPointer that points to the same location as this StringPointer.

Overrides:

equals in class Tuple

getBase

public Object getBase()

Returns a Label representing the base of this StringPointer

getOffset

public long getOffset()

Returns the offset of this StringPointer.

getValue

public Object getValue()

Returns the value obtained by dereferencing this StringPointer. This value is in non-native format.

isConst

public boolean isConst()

Always returns true.

isDerived

public boolean isDerived()

Always returns false.

kind

public int kind()

Returns an integer enumeration of the kind of this Pointer. The enumerated values are public fields of the Pointer class.

updateValue

public void updateValue(Object value)

Throws an error, as StringPointers are constant.

toString

public String toString()

Description copied from class: Tuple

Returns a human-readable description of this Tuple.

Overrides:

toString in class Tuple