diff -r bc131735c940 -r 438459a8e48b testing4/re_test.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing4/re_test.sh	Thu Nov 22 17:35:30 2018 +0000
@@ -0,0 +1,162 @@
+#!/bin/bash
+set -e
+
+out=${1:-output}
+
+echo "" > $out
+
+echo "Below is the feedback for your submission of CW 8, Part 1." >> $out
+echo "" >> $out
+
+
+# compilation tests
+
+function scala_compile {
+  (ulimit -t 30 -m 1024000 ; scala "$1" 2>> $out 1>> $out) 
+}
+
+# functional tests
+
+function scala_assert {
+  (ulimit -t 30 -m 1024000 ; scala -i "$1" "$2" -e "" 2> /dev/null 1> /dev/null)
+}
+
+# purity test
+
+function scala_vars {
+   (egrep '\bvar\b|\breturn\b|\.par|ListBuffer|mutable|new Array' "$1" 2> /dev/null 1> /dev/null)
+}
+
+
+# var, return, ListBuffer test
+#
+echo "re.scala does not contain vars, returns etc?" >> $out
+
+if (scala_vars re.scala)
+then
+  echo "  --> fail" >> $out
+  tsts0=$(( 1 ))
+else
+  echo "  --> yes" >> $out
+  tsts0=$(( 0 )) 
+fi
+
+
+# compilation test
+if  [ $tsts0 -eq 0 ]
+then    
+  echo "re.scala runs?" >> $out
+
+  if (scala_compile re.scala)
+  then
+    echo "  --> yes" >> $out
+    tsts1=$(( 0 ))
+  else
+    echo "  --> scala re.scala did not run successfully" >> $out
+    tsts1=$(( 1 )) 
+  fi
+else
+  tsts1=$(( 1 ))     
+fi
+
+
+
+if [ $tsts1 -eq 0 ]
+then
+  echo " nullable(ZERO) == false" >> $out
+  echo " nullable(ONE) == true" >> $out
+  echo " nullable(CHAR('a')) == false" >> $out
+  echo " nullable(ZERO | ONE) == true" >> $out
+  echo " nullable(ZERO | CHAR('a')) == false" >> $out
+  echo " nullable(ONE ~  ONE) == true" >> $out
+  echo " nullable(ONE ~ CHAR('a')) == false" >> $out
+  echo " nullable(STAR(ZERO)) == true" >> $out
+  
+  if (scala_assert "re.scala" "re1a_test.scala")
+  then
+    echo "  --> success" >> $out
+  else
+    echo "  --> test failed" >> $out
+  fi
+fi
+
+
+
+if [ $tsts1 -eq 0 ]
+then
+  echo " der('a', ZERO | ONE) == (ZERO | ZERO)" >> $out
+  echo " der('a', (CHAR('a') | ONE) ~ CHAR('a')) == ALT((ONE | ZERO) ~ CHAR('a'), ONE)" >> $out
+  echo " der('a', STAR(CHAR('a'))) == (ONE ~ STAR(CHAR('a')))" >> $out
+  echo " der('b', STAR(CHAR('a'))) == (ZERO ~ STAR(CHAR('a')))" >> $out
+  
+  if (scala_assert "re.scala" "re1b_test.scala")
+  then
+    echo "  --> success" >> $out
+  else
+    echo "  --> test failed" >> $out
+  fi
+fi
+
+
+
+if [ $tsts1 -eq 0 ]
+then
+  echo " simp(ZERO | ONE) == ONE" >> $out
+  echo " simp(STAR(ZERO | ONE)) == STAR(ZERO | ONE)" >> $out
+  echo " simp(ONE ~ (ONE ~ (ONE ~ CHAR('a')))) == CHAR('a')" >> $out
+  echo " simp(ONE ~ (ONE ~ (ONE ~ ZERO))) == ZERO" >> $out
+  echo " simp(ALT(ONE ~ (ONE ~ (ONE ~ ZERO)), CHAR('a'))) == CHAR('a')" >> $out
+  echo " simp(CHAR('a') | CHAR('a')) == CHAR('a')" >> $out
+  echo " simp(ONE | CHAR('a')) == (ONE | CHAR('a'))" >> $out
+  echo " simp(ALT((CHAR('a') | ZERO) ~ ONE," >> $out
+  echo "          ((ONE | CHAR('b')) | CHAR('c')) ~ (CHAR('d') ~ ZERO))) == CHAR('a')" >> $out
+  if (scala_assert "re.scala" "re1c_test.scala")
+  then
+    echo "  --> success" >> $out
+  else
+    echo "  --> test failed" >> $out
+  fi
+fi
+
+
+if [ $tsts1 -eq 0 ]
+then
+  echo " val EVIL = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))" >> $out
+  echo " ders(List.fill(5)('a'),EVIL) == SEQ(SEQ(STAR(CHAR('a')),STAR(STAR(CHAR('a')))),CHAR('b'))" >> $out
+  echo " ders(List('b'),EVIL) == ONE" >> $out
+  echo " ders(List('b','b'),EVIL) == ZERO" >> $out
+  echo " matcher(EVIL, \"a\" * 5 ++ \"b\") == true" >> $out
+  echo " matcher(EVIL, \"b\") == true" >> $out
+  echo " matcher(EVIL, \"bb\") == false" >> $out
+  echo " matcher(\"abc\", \"abc\") == true" >> $out
+  echo " matcher((\"ab\" | \"a\") ~ (ONE | \"bc\"), \"abc\") == true" >> $out
+  echo " matcher(ONE, \"\") == true" >> $out
+  echo " matcher(ZERO, \"\") == false" >> $out
+  echo " matcher(ONE | CHAR('a'), \"\") == true" >> $out
+  echo " matcher(ONE | CHAR('a'), \"a\") == true" >> $out
+  
+  if (scala_assert "re.scala" "re1d_test.scala")
+  then
+    echo "  --> success" >> $out
+  else
+    echo "  --> test failed" >> $out
+  fi
+fi
+
+
+if [ $tsts1 -eq 0 ]
+then
+  echo " val EVIL = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))" >> $out  
+  echo " size(der('a', der('a', EVIL))) == 28" >> $out
+  echo " size(der('a', der('a', der('a', EVIL)))) == 58" >> $out
+  echo " size(ders(\"aaaaaa\".toList, EVIL)) == 8" >> $out
+  
+  if (scala_assert "re.scala" "re1e_test.scala")
+  then
+    echo "  --> success" >> $out
+  else
+    echo "  --> test failed" >> $out
+  fi
+fi
+
+