#!/bin/bash

set -euo pipefail

scalafile=${1:-bfc.scala}

out=${2:-output}

echo -e "" > $out

echo -e "Below is the feedback for your submission of bfc.scala" >> $out

echo -e "" >> $out

# compilation tests

function scala_compile {

  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -Xprint:parser "$1" 2> c$out 1> c$out)

}

# functional tests

function scala_assert {

  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -i "$1" -- "$2" -e "" 2> /dev/null 1> /dev/null)

}

# purity test

function scala_vars {

    (sed 's/immutable/ok/g' c$out > cb$out;

     egrep '\bvar\b|\breturn\b|\.par\.|\.par |ListBuffer|AtomicInteger|mutable|util.control|new Array' cb$out 2> /dev/null 1> /dev/null)

}

# compilation test

echo -e "bfc.scala runs?" >> $out

if (scala_compile $scalafile)

then

    echo -e "  --> passed" >> $out

    tsts1=$(( 0 ))

else

    echo -e "  --> SCALA DID NOT RUN BFC.SCALA\n" >> $out

    tsts1=$(( 1 )) 

fi

# var, return, ListBuffer test

#

if [ $tsts1 -eq 0 ]

then

    echo -e "bfc.scala does not contain vars, returns etc?" >> $out

    if (scala_vars $scalafile)

    then

	echo -e "   --> FAIL (make triple-sure your program conforms to the required format)" >> $out  

	tsts1=$(( 1 ))

    else

	echo -e "  --> passed" >> $out

	tsts1=$(( 0 )) 

    fi

fi

### bfc tests

if [ $tsts1 -eq 0 ]

then

  echo -e " jtable(\"\"\"+++++[->++++++++++<]>--<+++[->>++++++++++<<]>>++<<----------[+>.>.<+<]\"\"\") ==" >> $out

  echo -e "     Map(69 -> 61, 5 -> 20, 60 -> 70, 27 -> 44, 43 -> 28, 19 -> 6)" >> $out  

  if (scala_assert $scalafile "bf_test5.scala")

  then

    echo -e "  --> success" >> $out

  else

    echo -e "  --> \n ONE TEST FAILED\n" >> $out

  fi

fi

if [ $tsts1 -eq 0 ]

then

    echo -e " optimise(load_bff(\"benchmark.bf\")).length == 181" >> $out

    echo -e " optimise(load_bff(\"mandelbrot.bf\")).length == 11203" >> $out  

  if (scala_assert $scalafile "bf_test6.scala")

  then

    echo -e "  --> success" >> $out

  else

    echo -e "  --> \n ONE TEST FAILED\n" >> $out

  fi

fi

if [ $tsts1 -eq 0 ]

then

    echo -e " combine(optimise(load_bff(\"benchmark.bf\"))).length == 134" >> $out

  if (scala_assert $scalafile "bf_test7.scala")

  then

    echo -e "  --> success" >> $out

  else

    echo -e "  --> \n ONE TEST FAILED\n" >> $out   

  fi

fi