//===-- Version.cpp -------------------------------------------------------===//
//
// Modifications made to adapt for Ascend, 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
//
//===----------------------------------------------------------------------===//

#include "lldb/Version/Version.h"
#include "VCSVersion.inc"
#include "lldb/Version/Version.inc"
#include "clang/Basic/Version.h"

#ifdef MS_DEBUGGER
static const char *GetMsdebugVersion() {
#ifdef MSDEBUG_VERSION_STRING
  return "msdebug version " MSDEBUG_VERSION_STRING;
#else
  return nullptr;
#endif
}
#endif

static const char *GetLLDBVersion() {
#ifdef LLDB_FULL_VERSION_STRING
  return LLDB_FULL_VERSION_STRING;
#else
  return "lldb version " LLDB_VERSION_STRING;
#endif
}

static const char *GetLLDBRevision() {
#ifdef LLDB_REVISION
  return LLDB_REVISION;
#else
  return nullptr;
#endif
}

static const char *GetLLDBRepository() {
#ifdef LLDB_REPOSITORY
  return LLDB_REPOSITORY;
#else
  return nullptr;
#endif
}

#ifdef MS_DEBUGGER
const char *lldb_private::GetVersion() {
    static std::string g_version_str;
  
    if (g_version_str.empty()) {
      const char *lldb_repo = GetLLDBRepository();
      const char *msdebug_version = GetMsdebugVersion();
      if (msdebug_version) {
        g_version_str += msdebug_version;
        g_version_str += "\n";
        if (lldb_repo) {
          g_version_str += "msdebug repository: ";
          g_version_str += lldb_repo;
          g_version_str += "\n";
        }
      }

      const char *lldb_version = GetLLDBVersion();
      const char *lldb_rev = GetLLDBRevision();
      g_version_str += lldb_version;
      if (lldb_rev) {
        g_version_str += ", revision: ";
        g_version_str += lldb_rev;
      }
  
      std::string clang_rev(clang::getClangRevision());
      if (clang_rev.length() > 0) {
        g_version_str += "\n  clang revision: ";
        g_version_str += clang_rev;
      }
  
      std::string llvm_rev(clang::getLLVMRevision());
      if (llvm_rev.length() > 0) {
        g_version_str += "\n  llvm revision: ";
        g_version_str += llvm_rev;
      }
    }
  
    return g_version_str.c_str();
  }
#else
const char *lldb_private::GetVersion() {
    static std::string g_version_str;

    if (g_version_str.empty()) {
      const char *lldb_version = GetLLDBVersion();
      const char *lldb_repo = GetLLDBRepository();
      const char *lldb_rev = GetLLDBRevision();
      g_version_str += lldb_version;
      if (lldb_repo || lldb_rev) {
        g_version_str += " (";
        if (lldb_repo)
          g_version_str += lldb_repo;
        if (lldb_repo && lldb_rev)
          g_version_str += " ";
        if (lldb_rev) {
          g_version_str += "revision ";
          g_version_str += lldb_rev;
        }
        g_version_str += ")";
      }
  
      std::string clang_rev(clang::getClangRevision());
      if (clang_rev.length() > 0) {
        g_version_str += "\n  clang revision ";
        g_version_str += clang_rev;
      }
  
      std::string llvm_rev(clang::getLLVMRevision());
      if (llvm_rev.length() > 0) {
        g_version_str += "\n  llvm revision ";
        g_version_str += llvm_rev;
      }
    }
  
    return g_version_str.c_str();
  }
#endif