Package org.apache.bcel.classfile

Class StackMapType

java.lang.Object

org.apache.bcel.classfile.StackMapType

All Implemented Interfaces:

Cloneable, Node

public final class StackMapType
extends Object
implements Node, Cloneable

This class represents the type of a local variable or item on stack used in the StackMap entries.

See Also:

• StackMapEntry
• StackMap
• Const

Field Summary

Fields

Modifier and Type	Field	Description
static final StackMapType[]	EMPTY_ARRAY	Empty array constant.

Constructor Summary

Constructors

Constructor	Description
StackMapType(byte type, int index, ConstantPool constantPool)	Constructs a StackMapType.

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor v)	Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
StackMapType	copy()	Creates a deep copy of this object.
void	dump(DataOutputStream file)	Dumps type entries to file.
String	getClassName()	Gets the class name of this StackMapType from the constant pool at index position.
ConstantPool	getConstantPool()	Gets the constant pool.
int	getIndex()	Gets the index.
byte	getType()	Gets the type.
boolean	hasIndex()	Checks if this type has an index.
void	setConstantPool(ConstantPool constantPool)	Sets the constant pool.
void	setIndex(int index)	Sets the index.
void	setType(byte type)	Sets the type.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

EMPTY_ARRAY

public static final StackMapType[] EMPTY_ARRAY

Empty array constant.

Constructor Details

StackMapType

public StackMapType(byte type,
 int index,
 ConstantPool constantPool)

Constructs a StackMapType.

Parameters:

type - type tag as defined in the Constants interface.

index - index to constant pool, or byte code offset.

constantPool - The constant pool.

Method Details

accept

public void accept(Visitor v)

Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.

Specified by:

accept in interface Node

Parameters:

v - Visitor object.

Since:

6.8.0

copy

public StackMapType copy()

Creates a deep copy of this object.

Returns:

deep copy of this object.

dump

public void dump(DataOutputStream file)
          throws IOException

Dumps type entries to file.

Parameters:

file - Output file stream.

Throws:

IOException - Thrown if an I/O error occurs.

getClassName

public String getClassName()

Gets the class name of this StackMapType from the constant pool at index position.

Returns:

The fully qualified name of the class for this StackMapType.

Since:

6.8.0

getConstantPool

public ConstantPool getConstantPool()

Gets the constant pool.

Returns:

Constant pool used by this object.

getIndex

public int getIndex()

Gets the index.

Returns:

index to constant pool if type == ITEM_Object, or offset in byte code, if type == ITEM_NewObject, and -1 otherwise.

getType

public byte getType()

Gets the type.

Returns:

The type.

hasIndex

public boolean hasIndex()

Checks if this type has an index.

Returns:

true, if type is either ITEM_Object or ITEM_NewObject.

setConstantPool

public void setConstantPool(ConstantPool constantPool)

Sets the constant pool.

Parameters:

constantPool - Constant pool to be used for this object.

setIndex

public void setIndex(int index)

Sets the index.

Parameters:

index - The index.

setType

public void setType(byte type)

Sets the type.

Parameters:

type - The type.

toString

public String toString()

Overrides:

toString in class Object

Returns:

String representation.