move include searching logic from TGLexer to SourceMgr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73845 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/include/llvm/Support/SourceMgr.h b/include/llvm/Support/SourceMgr.h
index 953cf897b9..53e7dd8dfb 100644
--- a/include/llvm/Support/SourceMgr.h
+++ b/include/llvm/Support/SourceMgr.h
@@ -57,12 +57,20 @@ class SourceMgr {
   /// Buffers - This is all of the buffers that we are reading from.
   std::vector<SrcBuffer> Buffers;
   
+  // IncludeDirectories - This is the list of directories we should search for
+  // include files in.
+  std::vector<std::string> IncludeDirectories;
+  
   SourceMgr(const SourceMgr&);    // DO NOT IMPLEMENT
   void operator=(const SourceMgr&); // DO NOT IMPLEMENT
 public:
   SourceMgr() {}
   ~SourceMgr();
   
+  void setIncludeDirs(const std::vector<std::string> &Dirs) {
+    IncludeDirectories = Dirs;
+  }
+  
   const SrcBuffer &getBufferInfo(unsigned i) const {
     assert(i < Buffers.size() && "Invalid Buffer ID!");
     return Buffers[i];
@@ -86,6 +94,11 @@ public:
     return Buffers.size()-1;
   }
   
+  /// AddIncludeFile - Search for a file with the specified name in the current
+  /// directory or in one of the IncludeDirs.  If no file is found, this returns
+  /// ~0, otherwise it returns the buffer ID of the stacked file.
+  unsigned AddIncludeFile(const std::string &Filename, SMLoc IncludeLoc);
+  
   /// FindBufferContainingLoc - Return the ID of the buffer containing the
   /// specified location, returning -1 if not found.
   int FindBufferContainingLoc(SMLoc Loc) const;