text: //===- PDBSymbolCompiland.cpp - compiland details ---------------*- C++ -*-===//
  //
  // 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
  //
  //===----------------------------------------------------------------------===//
  
  #include "llvm/DebugInfo/PDB/IPDBSession.h"
  #include "llvm/DebugInfo/PDB/IPDBSourceFile.h"
  
  #include "llvm/DebugInfo/PDB/PDBSymbolCompiland.h"
  #include "llvm/DebugInfo/PDB/PDBSymbolCompilandDetails.h"
  #include "llvm/DebugInfo/PDB/PDBSymbolCompilandEnv.h"
  #include "llvm/DebugInfo/PDB/PDBSymDumper.h"
  
  #include "llvm/ADT/StringSwitch.h"
  #include "llvm/Support/Path.h"
  #include <utility>
  
  using namespace llvm;
  using namespace llvm::pdb;
  
  void PDBSymbolCompiland::dump(PDBSymDumper &Dumper) const {
    Dumper.dump(*this);
  }
  
  std::string PDBSymbolCompiland::getSourceFileName() const {
    return sys::path::filename(getSourceFileFullPath()).str();
  }
  
  std::string PDBSymbolCompiland::getSourceFileFullPath() const {
    std::string SourceFileFullPath;
  
    // RecordedResult could be the basename, relative path or full path of the
    // source file. Usually it is retrieved and recorded from the command that
    // compiles this compiland.
    //
    //  cmd FileName          -> RecordedResult = .\\FileName
    //  cmd (Path)\\FileName  -> RecordedResult = (Path)\\FileName
    //
    std::string RecordedResult = RawSymbol->getSourceFileName();
  
    if (RecordedResult.empty()) {
      if (auto Envs = findAllChildren<PDBSymbolCompilandEnv>()) {
        std::string EnvWorkingDir, EnvSrc;
  
        while (auto Env = Envs->getNext()) {
          std::string Var = Env->getName();
          if (Var == "cwd") {
            EnvWorkingDir = Env->getValue();
            continue;
          }
          if (Var == "src") {
            EnvSrc = Env->getValue();
            if (sys::path::is_absolute(EnvSrc))
              return EnvSrc;
            RecordedResult = EnvSrc;
            continue;
          }
        }
        if (!EnvWorkingDir.empty() && !EnvSrc.empty()) {
          auto Len = EnvWorkingDir.length();
          if (EnvWorkingDir[Len - 1] != '/' && EnvWorkingDir[Len - 1] != '\\') {
            std::string Path = EnvWorkingDir + "\\" + EnvSrc;
            std::replace(Path.begin(), Path.end(), '/', '\\');
            // We will return it as full path if we can't find a better one.
            if (sys::path::is_absolute(Path))
              SourceFileFullPath = Path;
          }
        }
      }
    }
  
    if (!RecordedResult.empty()) {
      if (sys::path::is_absolute(RecordedResult))
        return RecordedResult;
  
      // This searches name that has same basename as the one in RecordedResult.
      auto OneSrcFile = Session.findOneSourceFile(
          this, RecordedResult, PDB_NameSearchFlags::NS_CaseInsensitive);
      if (OneSrcFile)
        return OneSrcFile->getFileName();
    }
  
    // At this point, we have to walk through all source files of this compiland,
    // and determine the right source file if any that is used to generate this
    // compiland based on language indicated in compilanddetails language field.
    auto Details = findOneChild<PDBSymbolCompilandDetails>();
    PDB_Lang Lang = Details ? Details->getLanguage() : PDB_Lang::Cpp;
    auto SrcFiles = Session.getSourceFilesForCompiland(*this);
    if (SrcFiles) {
      while (auto File = SrcFiles->getNext()) {
        std::string FileName = File->getFileName();
        auto file_extension = sys::path::extension(FileName);
        if (StringSwitch<bool>(file_extension.lower())
                .Case(".cpp", Lang == PDB_Lang::Cpp)
                .Case(".cc", Lang == PDB_Lang::Cpp)
                .Case(".cxx", Lang == PDB_Lang::Cpp)
                .Case(".c", Lang == PDB_Lang::C)
                .Case(".asm", Lang == PDB_Lang::Masm)
                .Case(".swift", Lang == PDB_Lang::Swift)
                .Default(false))
          return File->getFileName();
      }
    }
  
    return SourceFileFullPath;
  }
  