//===- FrontendOptions.cpp ------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Coding style: https://mlir.llvm.org/getting_started/DeveloperGuide/
//
//===----------------------------------------------------------------------===//

#include "flang/Frontend/FrontendOptions.h"

using namespace Fortran::frontend;

bool Fortran::frontend::isFixedFormSuffix(llvm::StringRef suffix) {
  // Note: Keep this list in-sync with flang/test/lit.cfg.py
  return suffix == "f77" || suffix == "f" || suffix == "F" || suffix == "ff" ||
      suffix == "for" || suffix == "FOR" || suffix == "fpp" || suffix == "FPP";
}

bool Fortran::frontend::isFreeFormSuffix(llvm::StringRef suffix) {
  // Note: Keep this list in-sync with flang/test/lit.cfg.py
  // TODO: Add Cuda Fortan files (i.e. `*.cuf` and `*.CUF`).
  return suffix == "f90" || suffix == "F90" || suffix == "ff90" ||
      suffix == "f95" || suffix == "F95" || suffix == "ff95" ||
      suffix == "f03" || suffix == "F03" || suffix == "f08" ||
      suffix == "F08" || suffix == "f18" || suffix == "F18";
}

bool Fortran::frontend::isToBePreprocessed(llvm::StringRef suffix) {
  return suffix == "F" || suffix == "FOR" || suffix == "fpp" ||
      suffix == "FPP" || suffix == "F90" || suffix == "F95" ||
      suffix == "F03" || suffix == "F08" || suffix == "F18";
}

InputKind FrontendOptions::getInputKindForExtension(llvm::StringRef extension) {
  if (isFixedFormSuffix(extension) || isFreeFormSuffix(extension)) {
    return Language::Fortran;
  }

  if (extension == "bc" || extension == "ll")
    return Language::LLVM_IR;
  if (extension == "fir" || extension == "mlir")
    return Language::MLIR;

  return Language::Unknown;
}
