#!/bin/sh -e

# ----------------------------------------------------------------------
# Compile base class C++ files with guards for conditional compilation
#
# By default, each file is compiled with three different sets of values of F
# Prime guards: 
# - Default values as found in fprime/config/FpConfig.h
# - All guards turned on
# - All guards turned off (except FW_PORT_SERIALIZATION for components
#   containing serial ports)
#
# If this script is run with the --all flag, each file is compiled with all
# possible combinations of values of F Prime guards with these exceptions:
# - FW_SERIALIZABLE_TO_STRING and FW_ARRAY_TO_STRING always have the same value
# - FW_PORT_SERIALIZATION is always on for components containing serial ports
# ----------------------------------------------------------------------

# Parse command line arguments
all_flag=false
for i in "$@"
do
  if [[ "$i" = "--all" ]]
  then
    all_flag=true
  fi
done

fprime_gcc=../../../../../scripts/fprime-gcc

# Set compiler flags
include_flags="-I.. -I../.. -I../../fprime -I../../fprime/config"
# F Prime components sometimes provide parameter arguments that are unused
# F Prime components use variable-length arrays for managing buffers
warning_flags="
-Wno-unused-parameter
-Wno-vla
"
gcc_flags="$include_flags $warning_flags $LOCAL_CPP_FLAGS"

# Find all guards used in generated component base class files
guards=`grep '#if FW_' *.ref.hpp *.ref.cpp | cut -f 2 -d ' ' | sort -u | sed 's/^/-D/g'`
# All guards set to 1
guards_on=`echo $guards | sed 's/ /\n/g' | sed 's/$/=1/g'`
# All guards set to 0
guards_off=`echo $guards | sed 's/ /\n/g' | sed 's/$/=0/g'`
# All guards except FW_PORT_SERIALIZATION set to 0
guards_off_serial_on=`echo $guards_off | sed 's/FW_PORT_SERIALIZATION=0/FW_PORT_SERIALIZATION=1/g'`

compile_cpp() {
  files=$*
  hpp_files=`echo $files | sed 's/\.cpp/.hpp/g'`

  if [ "$all_flag" = true ]
  then
    for g in `python3 ../gen_guards.py $guards`
    do
      g=`echo $g | sed 's/,/ /g'`

      if grep -q -s static_assert $hpp_files
      then
        g=`echo $g | sed 's/FW_PORT_SERIALIZATION=0/FW_PORT_SERIALIZATION=1/g'`
      fi
      echo "compiling $files with $g"
      $fprime_gcc -c $files $gcc_flags $g
     done
  else
    echo "compiling $files with default guards"
    $fprime_gcc -c $files $gcc_flags

    g=`echo $guards_on`
    echo "compiling $files with $g"
    $fprime_gcc -c $files $gcc_flags $g

    g=`echo $guards_off`
    if grep -q -s static_assert $hpp_files
    then
      g=$guards_off_serial_on
    fi
    echo "compiling $files with $g"
    $fprime_gcc -c $files $gcc_flags $g
  fi
}

# Compile cpp files
for file in `find . -name '*.ref.cpp' | sort`
do
  base=`basename $file .ref.cpp`
  cp $file $base.cpp
  compile_cpp $base.cpp
done