#!/bin/bash

set -e

out=${1:-output}

echo "" > $out

echo "Below is the feedback and provisional mark for your submission" >> $out

echo "for CW 8, Part 2.  Please note all marks are provisional until" >> $out

echo "ratified by the assessment board -- this is not an official" >> $out

echo "results transcript." >> $out

echo "" >> $out

function scala_vars {

   (egrep '\bvar\b|\breturn\b|ListBuffer|mutable' "$1" 2> /dev/null 1> /dev/null)

}

# compilation tests

function scala_compile {

  (scala "$1" 2> /dev/null 1> /dev/null) 

}

# functional tests

function scala_assert {

  (scala -i "$1" "$2" -e "" 2> /dev/null 1> /dev/null)

}

# marks for CW

marks=$(( 0 ))

# var, return, ListBuffer test

#

echo "re2.scala does not contain vars, returns etc?" | tee -a $out

if (scala_vars re2.scala)

then

  echo "  --> fail" | tee -a $out

  tsts0=$(( 1 ))

else

  echo "  --> yes" | tee -a $out

  tsts0=$(( 0 )) 

fi

# compilation test

if  [ $tsts0 -eq 0 ]

then    

  echo "re2.scala runs?" | tee -a $out

  if (scala_compile re2.scala)

  then

    echo "  --> yes" | tee -a $out

    tsts1=$(( 0 ))

  else

    echo "  --> scala re2.scala did not run successfully" | tee -a $out

    tsts1=$(( 1 )) 

  fi

else

  tsts1=$(( 1 ))     

fi

if [ $tsts1 -eq 0 ]

then

  echo " iterT(200000, (x: Int) => x + 1, 0) == 200000" | tee -a $out

  echo " iterT(100, (x: BigInt) => x * 2, BigInt(2)) == BigInt(\"2535301200456458802993406410752\")" | tee -a $out

  echo " iterT(10, (x: String) => x ++ \"a\", \"a\") == \"aaaaaaaaaaa\"" | tee -a $out

  if (scala_assert "re2.scala" "../../../marking/re2a_test.scala")

  then

    echo "  --> success" | tee -a $out

    marks=$(( marks + 2 ))

  else

    echo "  --> test failed" | tee -a $out

  fi

fi

if [ $tsts1 -eq 0 ]

then

  echo " size(iterT(20, (r: Rexp) => der('a', r), EVIL)) == 7340068" | tee -a $out

  echo " size(iterT(20, (r: Rexp) => simp(der('a', r)), EVIL)) == 8" | tee -a $out

  if (scala_assert "re2.scala" "../../../marking/re2b_test.scala")

  then

    echo "  --> success" | tee -a $out

    marks=$(( marks + 1 ))

  else

    echo "  --> test failed" | tee -a $out

  fi

fi

if [ $tsts1 -eq 0 ]

then

  echo " fixpT((x:Int) => if (200000 < x) x else x + 1, 0) == 200001" | tee -a $out

  echo " fixpT((x:Long) => if (20 < x) x else x + 1, 0L) == 21L" | tee -a $out

  if (scala_assert "re2.scala" "../../../marking/re2c_test.scala")

  then

    echo "  --> success" | tee -a $out

    marks=$(( marks + 1 ))

  else

    echo "  --> test failed" | tee -a $out

  fi

fi

## final marks

echo "Overall mark for CW 8, Part 2" | tee -a $out

echo "$marks" | tee -a $out