org.eclipse.persistence.internal.libraries.asm.tree.analysis

Class SourceValue

java.lang.Object

org.eclipse.persistence.internal.libraries.asm.tree.analysis.SourceValue

All Implemented Interfaces:

Value

public class SourceValue
extends Object
implements Value

A Value which keeps track of the bytecode instructions that can produce it.

Author:

Eric Bruneton

Field Summary

Fields

Modifier and Type	Field and Description
Set<AbstractInsnNode>	insns The instructions that can produce this value.
int	size The size of this value, in 32 bits words.

Constructor Summary

Constructors

Constructor and Description
SourceValue(int size) Constructs a new SourceValue.
SourceValue(int size, AbstractInsnNode insnNode) Constructs a new SourceValue.
SourceValue(int size, Set<AbstractInsnNode> insnSet) Constructs a new SourceValue.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object value)
int	getSize() Returns the size of this value.
int	hashCode()

Methods inherited from class java.lang.Object

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

Field Detail

size

public final int size

The size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.

insns

public final Set<AbstractInsnNode> insns

The instructions that can produce this value. For example, for the Java code below, the instructions that can produce the value of i at line 5 are the two ISTORE instructions at line 1 and 3:

 1: i = 0;
 2: if (...) {
 3:   i = 1;
 4: }
 5: return i;
 

Constructor Detail

SourceValue

public SourceValue(int size)

Constructs a new SourceValue.

Parameters:

size - the size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.

SourceValue

public SourceValue(int size,
                   AbstractInsnNode insnNode)

Constructs a new SourceValue.

Parameters:

size - the size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.

insnNode - an instruction that can produce this value.

SourceValue

public SourceValue(int size,
                   Set<AbstractInsnNode> insnSet)

Constructs a new SourceValue.

Parameters:

size - the size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.

insnSet - the instructions that can produce this value.

Method Detail

getSize

public int getSize()

Returns the size of this value.

Specified by:

getSize in interface Value

Returns:

the size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.

equals

public boolean equals(Object value)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object