lib/DebugInfo/PDB/PDBSymbolCompiland.cpp

   1 //===- PDBSymbolCompiland.cpp - compiland details ---------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/DebugInfo/PDB/IPDBSession.h"
  10 #include "llvm/DebugInfo/PDB/IPDBSourceFile.h"
  11
  12 #include "llvm/DebugInfo/PDB/PDBSymbolCompiland.h"
  13 #include "llvm/DebugInfo/PDB/PDBSymbolCompilandDetails.h"
  14 #include "llvm/DebugInfo/PDB/PDBSymbolCompilandEnv.h"
  15 #include "llvm/DebugInfo/PDB/PDBSymDumper.h"
  16
  17 #include "llvm/ADT/StringSwitch.h"
  18 #include "llvm/Support/Path.h"
  19 #include <utility>
  20
  21 using namespace llvm;
  22 using namespace llvm::pdb;
  23
  24 void PDBSymbolCompiland::dump(PDBSymDumper &Dumper) const {
  25   Dumper.dump(*this);
  26 }
  27
  28 std::string PDBSymbolCompiland::getSourceFileName() const {
  29   return sys::path::filename(getSourceFileFullPath()).str();
  30 }
  31
  32 std::string PDBSymbolCompiland::getSourceFileFullPath() const {
  33   std::string SourceFileFullPath;
  34
  35   // RecordedResult could be the basename, relative path or full path of the
  36   // source file. Usually it is retrieved and recorded from the command that
  37   // compiles this compiland.
  38   //
  39   //  cmd FileName          -> RecordedResult = .\\FileName
  40   //  cmd (Path)\\FileName  -> RecordedResult = (Path)\\FileName
  41   //
  42   std::string RecordedResult = RawSymbol->getSourceFileName();
  43
  44   if (RecordedResult.empty()) {
  45     if (auto Envs = findAllChildren<PDBSymbolCompilandEnv>()) {
  46       std::string EnvWorkingDir, EnvSrc;
  47
  48       while (auto Env = Envs->getNext()) {
  49         std::string Var = Env->getName();
  50         if (Var == "cwd") {
  51           EnvWorkingDir = Env->getValue();
  52           continue;
  53         }
  54         if (Var == "src") {
  55           EnvSrc = Env->getValue();
  56           if (sys::path::is_absolute(EnvSrc))
  57             return EnvSrc;
  58           RecordedResult = EnvSrc;
  59           continue;
  60         }
  61       }
  62       if (!EnvWorkingDir.empty() && !EnvSrc.empty()) {
  63         auto Len = EnvWorkingDir.length();
  64         if (EnvWorkingDir[Len - 1] != '/' && EnvWorkingDir[Len - 1] != '\\') {
  65           std::string Path = EnvWorkingDir + "\\" + EnvSrc;
  66           std::replace(Path.begin(), Path.end(), '/', '\\');
  67           // We will return it as full path if we can't find a better one.
  68           if (sys::path::is_absolute(Path))
  69             SourceFileFullPath = Path;
  70         }
  71       }
  72     }
  73   }
  74
  75   if (!RecordedResult.empty()) {
  76     if (sys::path::is_absolute(RecordedResult))
  77       return RecordedResult;
  78
  79     // This searches name that has same basename as the one in RecordedResult.
  80     auto OneSrcFile = Session.findOneSourceFile(
  81         this, RecordedResult, PDB_NameSearchFlags::NS_CaseInsensitive);
  82     if (OneSrcFile)
  83       return OneSrcFile->getFileName();
  84   }
  85
  86   // At this point, we have to walk through all source files of this compiland,
  87   // and determine the right source file if any that is used to generate this
  88   // compiland based on language indicated in compilanddetails language field.
  89   auto Details = findOneChild<PDBSymbolCompilandDetails>();
  90   PDB_Lang Lang = Details ? Details->getLanguage() : PDB_Lang::Cpp;
  91   auto SrcFiles = Session.getSourceFilesForCompiland(*this);
  92   if (SrcFiles) {
  93     while (auto File = SrcFiles->getNext()) {
  94       std::string FileName = File->getFileName();
  95       auto file_extension = sys::path::extension(FileName);
  96       if (StringSwitch<bool>(file_extension.lower())
  97               .Case(".cpp", Lang == PDB_Lang::Cpp)
  98               .Case(".cc", Lang == PDB_Lang::Cpp)
  99               .Case(".cxx", Lang == PDB_Lang::Cpp)
 100               .Case(".c", Lang == PDB_Lang::C)
 101               .Case(".asm", Lang == PDB_Lang::Masm)
 102               .Case(".swift", Lang == PDB_Lang::Swift)
 103               .Default(false))
 104         return File->getFileName();
 105     }
 106   }
 107
 108   return SourceFileFullPath;
 109 }