Package org.eolang.jeo.representation.bytecode

Class BytecodeLabel

java.lang.Object

org.eolang.jeo.representation.bytecode.BytecodeLabel

All Implemented Interfaces:

BytecodeEntry

public final class BytecodeLabel
extends Object
implements BytecodeEntry

Mark label instruction.

Since:

0.1

Constructor Summary

Constructors

Constructor	Description
BytecodeLabel(byte[] uid)	Constructor.
BytecodeLabel(String identifier)	Constructor.
BytecodeLabel(String identifier, AllLabels labels)	Constructor.
BytecodeLabel(org.objectweb.asm.Label label)	Constructor.

Method Summary

Modifier and Type	Method	Description
Iterable<org.xembly.Directive>	directives(boolean counting)
int	impact()	Impact of the instruction on the stack.
boolean	isGoto()	Is this instruction a goto?
boolean	isIf()	Is this instruction a conditional branch?
boolean	isLabel()	Is this instruction a label?
boolean	isOpcode()	Is this instruction a regular opcode?
boolean	isReturn()	Is this instruction a return statement?
boolean	isSwitch()	Is this instruction a switch?
boolean	isThrow()	Is this instruction a throw statement?
List<org.objectweb.asm.Label>	jumps()	Jump to a label.
void	writeTo(org.objectweb.asm.MethodVisitor visitor)	Write instruction to the method visitor.

Methods inherited from class java.lang.Object

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

Constructor Details

BytecodeLabel

public BytecodeLabel(byte[] uid)

Constructor.

Parameters:

uid - Label identifier.

BytecodeLabel

public BytecodeLabel(String identifier)

Constructor.

Parameters:

identifier - Label identifier.

BytecodeLabel

public BytecodeLabel(String identifier,
 AllLabels labels)

Constructor.

Parameters:

identifier - Label identifier.

labels - All labels.

BytecodeLabel

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

Constructor.

Parameters:

label - Label.

Method Details

writeTo

public void writeTo(org.objectweb.asm.MethodVisitor visitor)

Description copied from interface: BytecodeEntry

Write instruction to the method visitor.

Specified by:

writeTo in interface BytecodeEntry

Parameters:

visitor - Method visitor.

directives

public Iterable<org.xembly.Directive> directives(boolean counting)

Specified by:

directives in interface BytecodeEntry

isLabel

public boolean isLabel()

Description copied from interface: BytecodeEntry

Is this instruction a label?

Specified by:

isLabel in interface BytecodeEntry

Returns:

True if it is.

isSwitch

public boolean isSwitch()

Description copied from interface: BytecodeEntry

Is this instruction a switch?

Specified by:

isSwitch in interface BytecodeEntry

Returns:

True if it is.

isGoto

public boolean isGoto()

Description copied from interface: BytecodeEntry

Is this instruction a goto?

Specified by:

isGoto in interface BytecodeEntry

Returns:

True if it is.

isIf

public boolean isIf()

Description copied from interface: BytecodeEntry

Is this instruction a conditional branch?

Specified by:

isIf in interface BytecodeEntry

Returns:

True if it is.

isReturn

public boolean isReturn()

Description copied from interface: BytecodeEntry

Is this instruction a return statement?

Specified by:

isReturn in interface BytecodeEntry

Returns:

True if it is.

isThrow

public boolean isThrow()

Description copied from interface: BytecodeEntry

Is this instruction a throw statement?

Specified by:

isThrow in interface BytecodeEntry

Returns:

True if it is.

isOpcode

public boolean isOpcode()

Description copied from interface: BytecodeEntry

Is this instruction a regular opcode?

Specified by:

isOpcode in interface BytecodeEntry

Returns:

True if it is.

impact

public int impact()

Description copied from interface: BytecodeEntry

Impact of the instruction on the stack.

Specified by:

impact in interface BytecodeEntry

Returns:

Stack impact.

jumps

public List<org.objectweb.asm.Label> jumps()

Description copied from interface: BytecodeEntry

Jump to a label. Where to jump.

Specified by:

jumps in interface BytecodeEntry

Returns:

Jumps.