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

Models a primitive conversion instruction in the code array of a Code attribute, such as i2l. Corresponding opcodes have a kind of Opcode.Kind#CONVERT. Delivered as a CodeElement when traversing the elements of a CodeModel.

A primitive conversion instruction is composite:

ConvertInstruction(
    TypeKind fromType,
    TypeKind toType
)

where these conversions are valid:

Between int, long, float, and double, where fromType != toType;
From int to byte, char, and short.

Method Summary

Modifier and Type	Method and Description
public TypeKind	Returns: the source type to convert from fromType() Returns the source type to convert from.
public static ConvertInstruction	Returns: a conversion instruction of(TypeKind the type to convert from fromType, TypeKind the type to convert to toType) Returns a conversion instruction.
public static ConvertInstruction	Returns: a conversion instruction of(Opcode the opcode for the specific type of conversion instruction, which must be of kind `Opcode.Kind#CONVERT` op) Returns a conversion instruction.
public TypeKind	Returns: the destination type to convert to toType() Returns the destination type to convert to.

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

Method Detail

fromType	back to summary
public TypeKind fromType() Returns the source type to convert from. Returns:TypeKind the source type to convert from

fromType

back to summary

public TypeKind fromType()

Returns the source type to convert from.

Returns:TypeKind: the source type to convert from

of back to summary

of	back to summary
public static ConvertInstruction of(TypeKind fromType, TypeKind toType) Returns a conversion instruction. Valid conversions are: Between `int`, `long`, `float`, and `double`, where `fromType != toType`; From `int` to `byte`, `char`, and `short`. Parameters fromType:TypeKind the type to convert from toType:TypeKind the type to convert to Returns:ConvertInstruction a conversion instruction Exceptions IllegalArgumentException: if this is not a valid conversion

public static ConvertInstruction of(TypeKind fromType, TypeKind toType)

Returns a conversion instruction. Valid conversions are:

Between int, long, float, and double, where fromType != toType;
From int to byte, char, and short.

Parameters

fromType:TypeKind: the type to convert from
toType:TypeKind: the type to convert to

Returns:ConvertInstruction

a conversion instruction

Exceptions

IllegalArgumentException:: if this is not a valid conversion

of back to summary

of	back to summary
public static ConvertInstruction of(Opcode op) Returns a conversion instruction. Parameters op:Opcode the opcode for the specific type of conversion instruction, which must be of kind `Opcode.Kind#CONVERT` Returns:ConvertInstruction a conversion instruction Exceptions IllegalArgumentException: if the opcode kind is not `Opcode.Kind#CONVERT`.

public static ConvertInstruction of(Opcode op)

Returns a conversion instruction.

Parameters

op:Opcode: the opcode for the specific type of conversion instruction, which must be of kind Opcode.Kind#CONVERT

Returns:ConvertInstruction

a conversion instruction

Exceptions

IllegalArgumentException:: if the opcode kind is not Opcode.Kind#CONVERT.

toType	back to summary
public TypeKind toType() Returns the destination type to convert to. Returns:TypeKind the destination type to convert to

toType

back to summary

public TypeKind toType()

Returns the destination type to convert to.

Returns:TypeKind: the destination type to convert to

public sealed Interface ConvertInstruction

Method Summary

Method Detail