run

#!/bin/sh -f
#
# run
# Usage:  run decaf-file
#
# Compiles decaf-file and executes (spim).
#

SPIM=/usr/class/cs143/bin/spim
COMPILER=dcc

if [ $# -lt 1 ]; then
  echo "Run script error: The run script takes one argument, the path to a Decaf file."
  exit 1;
fi
if [ ! -x $COMPILER ]; then
  echo "Run script error: Cannot find $COMPILER executable!"
  echo "(You must run this script from the directory containing your $COMPILER executable.)"
  exit 1;
fi
if [ ! -r $1 ]; then
  echo "Run script error: Cannot find Decaf input file named '$1'."
  exit 1;
fi

echo "-- $COMPILER <$1 >tmp.asm"
./$COMPILER < $1 > tmp.asm 2>tmp.errors
if [ $? -ne 0 -o -s tmp.errors ]; then
  echo "Run script error: errors reported from $COMPILER compiling '$1'."
  echo " "
  cat tmp.errors
  exit 1;
fi

echo "-- spim -file tmp.asm"
echo " "
$SPIM -file tmp.asm

echo " "
echo " "
exit 0;