import {InstructionMajorVersionVerifier} from 'jvm/lib/core/jvm/verify/InstructionMajorVersionVerifier.js'

public class | source

InstructionMajorVersionVerifier

Utility class for verifying that all methods for a given class do not use instructions that are not available in their Java SE runtime.

Constructor Summary

Public Constructor
public	constructor(classInfo: ClassInfo)

Private Members
private	classInfo: ClassInfo
private	unusableOpcodes: Array<Number>

Public Methods
public	findInvalidMethodOpcodes(method: MethodInfo): Array<Number> Finds the intersection between the unusable opcodes and the opcodes present in MethodInfo.instructions.
public	findUnusableOpcodes(): Array<Number> Finds all opcodes with a version higher than the ClassInfo object being verified.
public	verify(): Boolean Determines if the ClassInfo object only has opcodes that are usable for the given Java SE runtime.

Name	Type	Attribute	Description
classInfo	ClassInfo

Finds the intersection between the unusable opcodes and the opcodes present in MethodInfo.instructions.

Name	Type	Attribute	Description
method	MethodInfo

Finds all opcodes with a version higher than the ClassInfo object being verified.

Checks against Opcodes.OPCODE_VERSIONS

flat array of opcodes that are not available in the Java SE runtime of the JVM Class File.

Determines if the ClassInfo object only has opcodes that are usable for the given Java SE runtime.