#!/bin/bash

rm -f ssbcc;
ln -s ../../../../ssbcc;

NAME=ifdef;

for INCLUDE_UART in false true; do
  for INCLUDE_I2C in false true; do
    FLAGS="";
    if ${INCLUDE_UART}; then
      FLAGS+=" -D D_INCLUDE_UART";
    fi
    if ${INCLUDE_I2C}; then
      FLAGS+=" -D D_INCLUDE_I2C";
    fi
    ssbcc -q ${FLAGS} uc.9x8 || { echo "FATAL ERROR:  ssbcc failed" > /dev/stderr; exit 1; }
    FAILED=false;
    # Validate existence/non-existence of UART peripheral.
    RESULT="`grep 'PERIPHERAL UART_Tx:' uc.v`";
    if ${INCLUDE_UART}; then
      if [ -z "${RESULT}" ]; then FAILED=true; fi
    else
      if [ -n "${RESULT}" ]; then FAILED=true; fi
    fi
    # Validate existence/non-existence of "NO I2C BUS" message.
    RESULT="`grep '// WARNING -- NO I2C BUS' uc.v`";
    if ${INCLUDE_I2C}; then
      if [ -n "${RESULT}" ]; then FAILED=true; fi
    else
      if [ -z "${RESULT}" ]; then FAILED=true; fi
    fi
    # Validate existence/non-existence of I2C bus signals.
    RESULT="`grep 'io_scl' uc.v`";
    if ${INCLUDE_I2C}; then
      if [ -z "${RESULT}" ]; then FAILED=true; fi
    else
      if [ -n "${RESULT}" ]; then FAILED=true; fi
    fi
    # Validate use of ":infinite_1" for existence/non-existence of I2C bus in uc.s
    RESULT="`grep ':infinite_1' uc.v`";
    if ${INCLUDE_I2C}; then
      if [ -z "${RESULT}" ]; then FAILED=true; fi
    else
      if [ -n "${RESULT}" ]; then FAILED=true; fi
    fi
    # Validate use of :loop_2 for existence/non-existence of UART use in uc.s
    RESULT="`grep ':loop_2' uc.v`";
    if ${INCLUDE_UART}; then
      if [ -z "${RESULT}" ]; then FAILED=true; fi
    else
      if [ -n "${RESULT}" ]; then FAILED=true; fi
    fi
    # Print error message if test failed.
    if $FAILED; then
      echo "ifdef test failed for ${FLAGS}" > /dev/stderr;
      exit 1;
    fi
  done
done

# Remove the temporary output files.
rm -f ssbcc uc.9x8-meta uc.v;

# Print success message and return success indication.
echo "Passed:  ${NAME}";
exit 0;