OpenJDK 27 · java.lang.classfile.instruction.IncrementInstruction

Models a local variable increment instruction in the code array of a Code attribute. Corresponding opcodes have a kind of Opcode.Kind#INCREMENT. Delivered as a CodeElement when traversing the elements of a CodeModel.

A local variable increment instruction is composite:

IncrementInstruction(
    int slot,
    int constant
)

where

slot must be u2.
constant must be within [-32768, 32767].

Method Summary

Modifier and Type	Method and Description
public int	Returns: the value to increment by constant() Returns the value to increment by.
public static IncrementInstruction	Returns: an increment instruction of(int the local variable slot to increment slot, int the value to increment by constant) Returns an increment instruction.
public static IncrementInstruction	Returns: an increment instruction of(Opcode the opcode for the specific type of increment instruction, which must be of kind `Opcode.Kind#INCREMENT` op, int the local variable slot to increment slot, int the increment constant constant) Returns an increment instruction.
public int	Returns: the local variable slot to increment slot() Returns the local variable slot to increment.

Inherited from java.lang.classfile.Instruction:: opcode sizeInBytes

Method Detail

constant	back to summary
public int constant() Returns the value to increment by. Returns:int the value to increment by

constant

back to summary

public int constant()

Returns the value to increment by.

Returns:int: the value to increment by

of back to summary

of	back to summary
public static IncrementInstruction of(int slot, int constant) Returns an increment instruction. `slot` must be `u2`. `constant` must be within `[-32768, 32767]`. Parameters slot:int the local variable slot to increment constant:int the value to increment by Returns:IncrementInstruction an increment instruction Exceptions IllegalArgumentException: if `slot` or `constant` is out of range

public static IncrementInstruction of(int slot, int constant)

Returns an increment instruction.

slot must be u2.
constant must be within [-32768, 32767].

Parameters

slot:int: the local variable slot to increment
constant:int: the value to increment by

Returns:IncrementInstruction

an increment instruction

Exceptions

IllegalArgumentException:: if slot or constant is out of range

of back to summary

of	back to summary
public static IncrementInstruction of(Opcode op, int slot, int constant) Returns an increment instruction. `slot` must be `u1` and `constant` must be within `[-128, 127]` for `iinc`, or `slot` must be `u2` and `constant` must be within `[-32768, 32767]` for `wide iinc`. API Note The explicit `op` argument allows creating `wide` or regular increment instructions when `slot` and `constant` can be encoded with more optimized increment instructions. Parameters op:Opcode the opcode for the specific type of increment instruction, which must be of kind `Opcode.Kind#INCREMENT` slot:int the local variable slot to increment constant:int the increment constant Returns:IncrementInstruction an increment instruction Exceptions IllegalArgumentException: if the opcode kind is not `Opcode.Kind#INCREMENT` or `slot` or `constant` is out of range Since 27

public static IncrementInstruction of(Opcode op, int slot, int constant)

Returns an increment instruction.

slot must be u1 and constant must be within [-128, 127] for iinc, or slot must be u2 and constant must be within [-32768, 32767] for wide iinc.

API Note

The explicit op argument allows creating wide or regular increment instructions when slot and constant can be encoded with more optimized increment instructions.

Parameters

op:Opcode: the opcode for the specific type of increment instruction, which must be of kind Opcode.Kind#INCREMENT
slot:int: the local variable slot to increment
constant:int: the increment constant

Returns:IncrementInstruction

an increment instruction

Exceptions

IllegalArgumentException:: if the opcode kind is not Opcode.Kind#INCREMENT or slot or constant is out of range

Since

slot	back to summary
public int slot() Returns the local variable slot to increment. Returns:int the local variable slot to increment

slot

back to summary

public int slot()

Returns the local variable slot to increment.

Returns:int: the local variable slot to increment

public sealed Interface IncrementInstruction

Method Summary

Method Detail