override fun transform()

in jvm-agent/src/main/org/jetbrains/lincheck/jvm/agent/LincheckClassFileTransformer.kt [47:78]

• 24 lines of code
• 7 McCabe index (conditional complexity)

    override fun transform(
        loader: ClassLoader?,
        internalClassName: String?,
        classBeingRedefined: Class<*>?,
        protectionDomain: ProtectionDomain?,
        classBytes: ByteArray
    ): ByteArray? = runInsideIgnoredSection {
        if (classBeingRedefined != null) {
            require(internalClassName != null) {
                "Internal class name of redefined class ${classBeingRedefined.name} must not be null"
            }
        }
        // Internal class name could be `null` in some cases (can be witnessed on JDK-8),
        // this can be related to the Kotlin compiler bug:
        // - https://youtrack.jetbrains.com/issue/KT-16727/
        if (internalClassName == null) return null
        // If the class should not be transformed, return immediately.
        if (!shouldTransform(internalClassName.toCanonicalClassName(), instrumentationMode)) {
            return null
        }
        // If lazy mode is used, transform classes lazily,
        // once they are used in the testing code.
        if (instrumentationStrategy == InstrumentationStrategy.LAZY &&
            // do not re-transform already instrumented classes
            internalClassName.toCanonicalClassName() !in instrumentedClasses &&
            // always transform eagerly instrumented classes
            !isEagerlyInstrumentedClass(internalClassName.toCanonicalClassName())
        ) {
            return null
        }
        return transformImpl(loader, internalClassName, classBytes)
    }