import org.gradle.api.Project
import java.io.ByteArrayOutputStream
import java.io.File


/**
 * `dir / "sub"` is the same as `dir.resolve("sub")`.
 *
 * @see [File.resolve]
 */
operator fun File.div(child: String): File =
    resolve(child)


fun Project.execAndGetStdout(workingDir: File, ignoreExitValue: Boolean, vararg args: String): String {
    val out = ByteArrayOutputStream()
    exec {

    val entryPoints: MutableSet<ClassDetails> = linkedSetOf()

    val shadowPackagePrefix =
        shadowPackage.takeIf(String::isNotEmpty)
            ?.let { it.replace('.', '/') + "/" }
            ?: ""

    operator fun get(className: String) =
        classes.computeIfAbsent(className) {
            val outputClassName = if (unshadedPackages.matches(className)) className else shadowPackagePrefix + className

        def infixChanged = oldIsInfix != newIsInfix

        if (operatorChanged || infixChanged) {
            List<String> changes = []
            if (operatorChanged) {
                changes.add(modifierChangeDetail("operator", newIsOperator))
            }
            if (infixChanged) {
                changes.add(modifierChangeDetail("infix", newIsInfix))
            }

    @Test
    fun `operator or infix modifier change is breaking`() {

        checkNotBinaryCompatibleKotlin(
            v1 = """
                fun Int.invoke(some: Int) {}
                operator fun Boolean.invoke(some: Int) {}

                fun String.invoke(some: Int) {}
                operator fun Long.invoke(some: Int) {}

                fun Float.invoke(some: Int) {}

                    fun foo(bar: String) {}
                }
                operator fun Source.invoke(arg: String) {}
            """,
            v2 = """
                class Source(some: String?) {
                    fun foo(bar: String?) {}
                }
                operator fun Source.invoke(arg: String?) {}
            """
        ) {
            assertHasNoError()

        if (Modifier.isPrivate(ctMember.modifiers)) false
        else hasKotlinFlag(ctMember, Flag.IS_INTERNAL)

    fun isKotlinOperatorFunction(ctMethod: CtMethod): Boolean =
        hasKotlinFlag(ctMethod, Flag.Function.IS_OPERATOR)

    fun isKotlinInfixFunction(ctMethod: CtMethod): Boolean =
        hasKotlinFlag(ctMethod, Flag.Function.IS_INFIX)

    private
    fun hasKotlinFlag(ctClass: CtClass, flag: Flag): Boolean =

                    }
                ]
            }
        """)

        then:
        changes.acceptedChanges.size() == 1
        def acceptedChange = changes.acceptedChanges.entrySet().iterator().next()
        def change = acceptedChange.key
        change.type == "org.gradle.api.initialization.ConfigurableIncludedBuild"
        change.member == "Implemented interface org.gradle.api.initialization.IncludedBuild"