#!/usr/bin/env bash
# Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.

# Script for running AOT snapshots in Dart 2 mode: with strong mode semantics
# and reified generics enabled.

set -e

function follow_links() {
  file="$1"
  while [ -h "$file" ]; do
    # On Mac OS, readlink -f doesn't work.
    file="$(readlink "$file")"
  done
  echo "$file"
}

# Unlike $0, $BASH_SOURCE points to the absolute path of this file.
PROG_NAME="$(follow_links "$BASH_SOURCE")"

# Handle the case where dart-sdk/bin has been symlinked to.
CUR_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"

. "$CUR_DIR/shared_functions.sh"

if [[ `uname` == 'Darwin' ]];
then
  OUT_DIR="$CUR_DIR"/../../../xcodebuild/
else
  OUT_DIR="$CUR_DIR"/../../../out/
fi

HOST_ARCH="$(host_arch)"

export DART_CONFIGURATION=${DART_CONFIGURATION:-ReleaseX64}
TARGET_ARCH="$(parse_target_arch "$DART_CONFIGURATION")"
BIN_DIR="$OUT_DIR$DART_CONFIGURATION"
if [ ! -d "$BIN_DIR" ]; then
  echo "$BIN_DIR is not a directory" >&2
  exit 1
fi

QEMU=""
# If the target architecture differs from the host architecture, use qemu
# to run the cross-compiled binary. Cross compilation is denoted by an X
# between the build mode and the architecture name, re.g., ReleaseXARM64 on X64.
if [[ "$DART_CONFIGURATION" =~ (Debug|Release|Product)X[^6] ]] && \
      is_cross_compiled "$HOST_ARCH" "$TARGET_ARCH"; then
  case "$TARGET_ARCH" in
    "ARM64")
    QEMU="qemu-aarch64 -L /usr/aarch64-linux-gnu/"
    ;;
    "ARM")
    QEMU="qemu-arm -L /usr/arm-linux-gnueabihf/"
    ;;
    *)
    echo "No qemu handling for running $TARGET_ARCH binaries on $HOST_ARCH" >&2
    exit 1
    ;;
  esac
fi

exec $QEMU "$BIN_DIR"/dartaotruntime "$@"