#!/usr/bin/env bash

set -e

function usage {
  cat <<-EOF
USAGE

  $0 [-adDg] [-s SEED] [-l LANGUAGE] [-e EXAMPLE]

OPTIONS

  -h  Print this message

  -a  Compile C code with the Clang static analyzer

  -e  Run only the corpus tests whose name contain the given string

  -i  Run the given number of iterations of randomized tests (default 10)

  -s  Set the seed used to control random behavior

  -d  Print parsing log to stderr

  -D  Generate an SVG graph of parsing logs

  -g  Run the tests with a debugger

EOF
}

export RUST_BACKTRACE=full

mode=normal
test_flags=""

while getopts "adDghl:e:s:i:" option; do
  case ${option} in
    h)
      usage
      exit
      ;;
    a)
      export RUSTFLAGS="-Z sanitizer=address"
      # Specify a `--target` explicitly. For some reason, this is required for
      # address sanitizer support.
      toolchain=$(rustup show active-toolchain)
      toolchain_regex='(stable|beta|nightly)-([_a-z0-9-]+).*'
      if [[ $toolchain =~ $toolchain_regex ]]; then
        release=${BASH_REMATCH[1]}
        current_target=${BASH_REMATCH[2]}
      else
        echo "Failed to parse toolchain '${toolchain}'"
      fi
      test_flags="${test_flags} --target ${current_target}"
      ;;
    e)
      export TREE_SITTER_EXAMPLE=${OPTARG}
      ;;
    s)
      export TREE_SITTER_SEED=${OPTARG}
      ;;
    i)
      export TREE_SITTER_ITERATIONS=${OPTARG}
      ;;
    d)
      export TREE_SITTER_LOG=1
      ;;
    D)
      export TREE_SITTER_LOG_GRAPHS=1
      ;;
    g)
      mode=debug
      ;;
  esac
done

shift $(expr $OPTIND - 1)

if [[ "${mode}" == "debug" ]]; then
  test_binary=$(
    cargo test $test_flags --no-run --message-format=json 2> /dev/null |\
    jq -rs 'map(select(.target.name == "tree-sitter-cli" and .executable))[0].executable'
  )
  lldb "${test_binary}" -- $1
else
  cargo test $test_flags $1 -- --nocapture
fi