Dynamic.kt

package org.jire

import java.util.*

abstract class DynamicBody<T>(val parent: DynamicBody<*>?, val body: T.() -> Any) {

	protected val map = HashMap<String, Any>()

	infix fun String.to(value: Any): Any {
		map[this] = value
		return value
	}

	operator fun String.unaryPlus() = try {
		map[this]!!
	} catch (e: Exception) {
		parent?.map!![this]!!
	}

	infix fun String.func(body: DynamicFunc.() -> Any) {
		map[this] = DynamicFunc(this@DynamicBody, body)
	}

	operator fun String.invoke(): Any {
		val func = +this as DynamicFunc
		return func.body(func)
	}

	operator fun String.invoke(vararg args: Any): Any {
		val func = +this as DynamicFunc
		func.arg.array = args
		return func.body(func)
	}

}

class DynamicHead(body: DynamicHead.() -> Any) : DynamicBody<DynamicHead>(null, body)

class DynamicFunc(parent: DynamicBody<*>, body: DynamicFunc.() -> Any) : DynamicBody<DynamicFunc>(parent, body) {

	val arg = DynamicArgs()

}

class DynamicArgs {

	internal var array: Array<out Any>? = null

	operator fun get(index: Int) = array!![index]

}

fun dynamic(body: DynamicHead.() -> Any) {
	DynamicHead(body).body()
}

fun main(args: Array<String>) = dynamic {
	"country" to "USA"
	"say" func {
		println("${arg[0]} ${arg[1]}")
	}
	"say"("Hello world! You're currently in", +"country")
}