Package org.eolang.opeo

Class LabelInstruction

java.lang.Object

org.eolang.opeo.LabelInstruction

All Implemented Interfaces:

Instruction

public final class LabelInstruction
extends Object
implements Instruction

Label instruction. This class mimics the bytecode instruction, although it is not an instruction.

Since:

0.1

Nested Class Summary

Nested classes/interfaces inherited from interface org.eolang.opeo.Instruction

Instruction.Nop

Field Summary

Fields

Modifier and Type	Field	Description
static final int	LABEL_OPCODE	Opcode number to mimic the bytecode instruction.

Constructor Summary

Constructors

Constructor	Description
LabelInstruction()	Constructor.
LabelInstruction(String identifier)	Constructor.
LabelInstruction(org.eolang.jeo.representation.xmir.XmlLabel xml)	Constructor.
LabelInstruction(org.objectweb.asm.Label label)	Constructor.

Method Summary

Modifier and Type	Method	Description
int	opcode()	Opcode number.
Object	operand(int index)	Retrieve operand by position index.
List<Object>	operands()	Full list of operands.

Methods inherited from class java.lang.Object

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

Field Details

LABEL_OPCODE

public static final int LABEL_OPCODE

Opcode number to mimic the bytecode instruction. Should be higher than any number of the real instructions. See: instructions

See Also:

• Constant Field Values

Constructor Details

LabelInstruction

public LabelInstruction()

Constructor. Creates a random label.

LabelInstruction

public LabelInstruction(org.eolang.jeo.representation.xmir.XmlLabel xml)

Constructor.

Parameters:

xml - XML representation of label.

LabelInstruction

public LabelInstruction(org.objectweb.asm.Label label)

Constructor.

Parameters:

label - Label.

LabelInstruction

public LabelInstruction(String identifier)

Constructor.

Parameters:

identifier - Label identifier.

Method Details

opcode

public int opcode()

Description copied from interface: Instruction

Opcode number.

Specified by:

opcode in interface Instruction

Returns:

Opcode number.

operand

public Object operand(int index)

Description copied from interface: Instruction

Retrieve operand by position index.

Specified by:

operand in interface Instruction

Parameters:

index - Operand index

Returns:

Operand

operands

public List<Object> operands()

Description copied from interface: Instruction

Full list of operands.

Specified by:

operands in interface Instruction

Returns:

Operands.