// Glue code for CW4

//===================

// generates j-files and runs class-files

//

//

// needs 

//

//  tokenise(s: String) : List[Token]

//

//  Stmts - parser consuming Tokens

//

//  compile(bl: Block, class_name: String) : String

import ammonite.ops._

def parse_tks(tks : List[Token]) = {

  Stmts.parse_all(tks).head

}

def compile_to_file(bl: Block, class_name: String) : Unit = {

  println(s"Start of compilation")

  write.over(pwd / s"$class_name.j", compile(bl, class_name))  

  println(s"generated $class_name.j file")

  os.proc("java", "-jar", "jasmin.jar", s"$class_name.j").call()

  println(s"generated $class_name.class file ")

}

@main

def main(fname: String) = {

    val path = os.pwd / fname

    val class_name = fname.stripSuffix("." ++ path.ext)

    val tks = tokenise(os.read(path))

    val ast = parse_tks(tks)

    compile_to_file(ast, class_name)

}

@main

def run(fname: String) = {

    val path = os.pwd / fname

    val class_name = fname.stripSuffix("." ++ path.ext)

    val tks = tokenise(os.read(path))

    val ast = parse_tks(tks)

    compile_to_file(ast, class_name)

    os.proc("java", s"${class_name}/${class_name}").call(stdout = os.Inherit, stdin = os.Inherit)

    println(s"done.")

}