Class GETFIELD

java.lang.Object

org.apache.bcel.generic.Instruction

org.apache.bcel.generic.CPInstruction

org.apache.bcel.generic.FieldOrMethod

org.apache.bcel.generic.FieldInstruction

org.apache.bcel.generic.GETFIELD

All Implemented Interfaces:

Cloneable, ExceptionThrower, IndexedInstruction, LoadClass, StackConsumer, StackProducer, TypedInstruction

public class GETFIELD
extends FieldInstruction
implements ExceptionThrower, StackConsumer, StackProducer

GETFIELD - Fetch field from object

Stack: ..., objectref -> ..., value

OR

Stack: ..., objectref -> ..., value.word1, value.word2

Field Summary

Fields inherited from class CPInstruction

index

Fields inherited from class Instruction

length, opcode

Constructor Summary

Constructors

Constructor	Description
GETFIELD(int index)	Constructs a GETFIELD instruction.

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor v)	Call corresponding visitor method(s).
Class<?>[]	getExceptions()	Gets the exceptions that may be thrown by this instruction.
int	produceStack(ConstantPoolGen cpg)	This method also gives right results for instructions whose effect on the stack depends on the constant pool entry they reference.

Methods inherited from class FieldInstruction

getFieldName, getFieldSize, getFieldType, getType, toString

Methods inherited from class FieldOrMethod

getClassName, getClassType, getLoadClassType, getName, getReferenceType, getSignature

Methods inherited from class CPInstruction

dump, getIndex, initFromFile, setIndex, toString

Methods inherited from class Instruction

consumeStack, copy, equals, getComparator, getLength, getName, getOpcode, hashCode, isValidByte, isValidShort, readInstruction, setComparator, toString

Methods inherited from class Object

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

Methods inherited from interface StackConsumer

consumeStack

Constructor Details

GETFIELD

public GETFIELD(int index)

Constructs a GETFIELD instruction.

Parameters:

index - the constant pool index.

Method Details

accept

public void accept(Visitor v)

Call corresponding visitor method(s). The order is: Call visitor methods of implemented interfaces first, then call methods according to the class hierarchy in descending order, that is, the most specific visitXXX() call comes last.

Specified by:

accept in class Instruction

Parameters:

v - Visitor object.

getExceptions

public Class<?>[] getExceptions()

Description copied from interface: ExceptionThrower

Gets the exceptions that may be thrown by this instruction.

Specified by:

getExceptions in interface ExceptionThrower

Returns:

the exceptions that may be thrown by this instruction.

produceStack

public int produceStack(ConstantPoolGen cpg)

Description copied from class: Instruction

This method also gives right results for instructions whose effect on the stack depends on the constant pool entry they reference.

Specified by:

produceStack in interface StackProducer

Overrides:

produceStack in class Instruction

Parameters:

cpg - the constant pool generator.

Returns:

Number of words produced onto stack by this instruction, or Constants.UNPREDICTABLE, if this cannot be computed statically