#!/bin/sh

# Use `./bin/check-compiler-flag FLAG` to check the behaviour of the given compiler flag.
# This is useful if `crystal build` is affected when using `-DFLAG` option.
#
# This script will
#   * run the compiler_spec using the flag
#   * build the compiler to have the flag available (in case the flag is introduced in this version)
#   * run the std_spec and primitives_spec with and without the flag
#   * check the compiler_spec built with and without the flag (eg: the specs build with the flag can generate a compiler without the flag)
#   * build a 2nd generation of the compiler using the flag
#   * repeat the checks for the spec suites with and without the flag

set -eux

COMPILER_FLAG=$1

# test compiler_specs
make clean_cache clean_crystal
CRYSTAL_LIBRARY_PATH=$(./bin/crystal env CRYSTAL_LIBRARY_PATH) CRYSTAL_SPEC_COMPILER_FLAGS="$COMPILER_FLAG" make compiler_spec

# first gen compiler
make clean_cache clean_crystal crystal
./bin/crystal --version
md5 .build/crystal

# run specs
make clean_cache std_spec
make clean_cache std_spec FLAGS="-D$COMPILER_FLAG"
make clean_cache primitives_spec
make clean_cache primitives_spec FLAGS="-D$COMPILER_FLAG"

# test compiler_specs
make clean_cache
CRYSTAL_LIBRARY_PATH=$(./bin/crystal env CRYSTAL_LIBRARY_PATH) CRYSTAL_SPEC_COMPILER_FLAGS="$COMPILER_FLAG" make compiler_spec FLAGS="-D$COMPILER_FLAG"
make clean_cache
CRYSTAL_LIBRARY_PATH=$(./bin/crystal env CRYSTAL_LIBRARY_PATH) make compiler_spec FLAGS="-D$COMPILER_FLAG"
make clean_cache
CRYSTAL_LIBRARY_PATH=$(./bin/crystal env CRYSTAL_LIBRARY_PATH) make compiler_spec

# building 2nd gen compiler
make clean_crystal clean_cache crystal # first
md5 .build/crystal
touch src/compiler/crystal.cr
sleep 2
make clean_cache crystal FLAGS="-D$COMPILER_FLAG" # second
md5 .build/crystal

# run specs
make clean_cache std_spec
make clean_cache std_spec FLAGS="-D$COMPILER_FLAG"
make clean_cache primitives_spec
make clean_cache primitives_spec FLAGS="-D$COMPILER_FLAG"

# run compiler specs
make clean_cache
CRYSTAL_LIBRARY_PATH=$(./bin/crystal env CRYSTAL_LIBRARY_PATH) CRYSTAL_SPEC_COMPILER_FLAGS="$COMPILER_FLAG" make compiler_spec FLAGS="-D$COMPILER_FLAG"
make clean_cache
CRYSTAL_LIBRARY_PATH=$(./bin/crystal env CRYSTAL_LIBRARY_PATH) make compiler_spec FLAGS="-D$COMPILER_FLAG"
make clean_cache
CRYSTAL_LIBRARY_PATH=$(./bin/crystal env CRYSTAL_LIBRARY_PATH) make compiler_spec