Interface CodeAttribute

All Superinterfaces:

AttributePREVIEW<CodeAttributePREVIEW>, AttributedElementPREVIEW, ClassFileElementPREVIEW, CodeModelPREVIEW, CompoundElementPREVIEW<CodeElementPREVIEW>, Iterable<CodeElementPREVIEW>, MethodElementPREVIEW

public sealed interface CodeAttribute
extends AttributePREVIEW<CodeAttributePREVIEW>, CodeModelPREVIEW

CodeAttribute is a preview API of the Java platform.

Programs can only use CodeAttribute when preview features are enabled.

Preview features may be removed in a future release, or upgraded to permanent features of the Java platform.

Models the Code attribute (JVMS 4.7.3), appears on non-native, non-abstract methods and contains the bytecode of the method body. Delivered as a MethodElement^PREVIEW when traversing the elements of a MethodModel^PREVIEW.

The attribute does not permit multiple instances in a given location. Subsequent occurrence of the attribute takes precedence during the attributed element build or transformation.

Since:

22

Method Summary

Modifier and Type	Method	Description
byte[]	codeArray()	Returns the bytes (bytecode) of the code array.
int	codeLength()	Returns The length of the code array in bytes.
int	labelToBci(LabelPREVIEW label)	Returns the position of the label in the codeArray.
int	maxLocals()	Returns the maximum size of the local variable table.
int	maxStack()	Returns the maximum size of the operand stack.

Methods declared in interface java.lang.classfile.Attribute^PREVIEW

attributeMapper, attributeName

Methods declared in interface java.lang.classfile.AttributedElement^PREVIEW

attributes, findAttribute, findAttributes

Methods declared in interface java.lang.classfile.CodeModel^PREVIEW

exceptionHandlers, parent

Methods declared in interface java.lang.classfile.CompoundElement^PREVIEW

elementList, elementStream, forEach, iterator

Methods declared in interface java.lang.Iterable

spliterator

Method Details

maxLocals

int maxLocals()

Returns the maximum size of the local variable table.

Returns:

the maximum size of the local variable table

maxStack

int maxStack()

Returns the maximum size of the operand stack.

Returns:

the maximum size of the operand stack

codeLength

int codeLength()

Returns The length of the code array in bytes.

Returns:

The length of the code array in bytes

codeArray

byte[] codeArray()

Returns the bytes (bytecode) of the code array.

Returns:

the bytes (bytecode) of the code array

labelToBci

int labelToBci(LabelPREVIEW label)

Returns the position of the label in the codeArray.

Parameters:

label - a marker for a position within this CodeAttribute

Returns:

the position of the label in the codeArray

Throws:

IllegalArgumentException - if the label is not from this attribute