text: /*
  Copyright (c) 2015 - present Advanced Micro Devices, Inc. All rights reserved.
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
  */
  
  #include "LLVMCompat.h"
  #include "llvm/Support/Path.h"
  
  namespace llcompat {
  
  void PrintStackTraceOnErrorSignal() {
    // The signature of PrintStackTraceOnErrorSignal changed in llvm 3.9. We don't support
    // anything older than 3.8, so let's specifically detect the one old version we support.
  #if (LLVM_VERSION_MAJOR == 3) && (LLVM_VERSION_MINOR == 8)
    llvm::sys::PrintStackTraceOnErrorSignal();
  #else
    llvm::sys::PrintStackTraceOnErrorSignal(StringRef());
  #endif
  }
  
  ct::Replacements& getReplacements(ct::RefactoringTool& Tool, StringRef file) {
  #if LLVM_VERSION_MAJOR > 3
    // getReplacements() now returns a map from filename to Replacements - so create an entry
    // for this source file and return a reference to it.
    return Tool.getReplacements()[file];
  #else
    return Tool.getReplacements();
  #endif
  }
  
  void insertReplacement(ct::Replacements& replacements, const ct::Replacement& rep) {
  #if LLVM_VERSION_MAJOR > 3
    // New clang added error checking to Replacements, and *insists* that you explicitly check it.
    llvm::consumeError(replacements.add(rep));
  #else
    // In older versions, it's literally an std::set<Replacement>
    replacements.insert(rep);
  #endif
  }
  
  void EnterPreprocessorTokenStream(clang::Preprocessor& _pp, const clang::Token *start, size_t len, bool DisableMacroExpansion) {
  #if (LLVM_VERSION_MAJOR == 3) && (LLVM_VERSION_MINOR == 8)
    _pp.EnterTokenStream(start, len, false, DisableMacroExpansion);
  #else
    #if (LLVM_VERSION_MAJOR < 9)
      _pp.EnterTokenStream(clang::ArrayRef<clang::Token>{start, len}, DisableMacroExpansion);
    #else
      _pp.EnterTokenStream(clang::ArrayRef<clang::Token>{start, len}, DisableMacroExpansion, false);
    #endif
  #endif
  }
  
  clang::SourceLocation getBeginLoc(const clang::Stmt* stmt) {
  #if LLVM_VERSION_MAJOR < 8
    return stmt->getLocStart();
  #else
    return stmt->getBeginLoc();
  #endif
  }
  
  clang::SourceLocation getBeginLoc(const clang::TypeLoc& typeLoc) {
  #if LLVM_VERSION_MAJOR < 8
    return typeLoc.getLocStart();
  #else
    return typeLoc.getBeginLoc();
  #endif
  }
  
  clang::SourceLocation getEndLoc(const clang::Stmt* stmt) {
  #if LLVM_VERSION_MAJOR < 8
    return stmt->getLocEnd();
  #else
    return stmt->getEndLoc();
  #endif
  }
  
  clang::SourceLocation getEndLoc(const clang::TypeLoc& typeLoc) {
  #if LLVM_VERSION_MAJOR < 8
    return typeLoc.getLocEnd();
  #else
    return typeLoc.getEndLoc();
  #endif
  }
  
  std::error_code real_path(const Twine &path, SmallVectorImpl<char> &output,
                            bool expand_tilde) {
  #if LLVM_VERSION_MAJOR < 5
    output.clear();
    std::string s = path.str();
    output.append(s.begin(), s.end());
    if (sys::path::is_relative(path)) {
      return sys::fs::make_absolute(output);
    }
    return std::error_code();
  #else
    return sys::fs::real_path(path, output, expand_tilde);
  #endif
  }
  
  bool pragma_once_outside_header() {
  #if LLVM_VERSION_MAJOR < 4
    return false;
  #else
    return true;
  #endif
  }
  
  } // namespace llcompat
  