1 files changed, 120 insertions, 0 deletions
diff --git a/include/llvm/Support/SourceMgr.h b/include/llvm/Support/SourceMgr.h
new file mode 100644
index 000000000000..25775cb74419
--- /dev/null
+++ b/include/llvm/Support/SourceMgr.h
@@ -0,0 +1,120 @@
+//===- SourceMgr.h - Manager for Source Buffers & Diagnostics ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the SourceMgr class.  This class is used as a simple
+// substrate for diagnostics, #include handling, and other low level things for
+// simple parsers.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_SOURCEMGR_H
+#define SUPPORT_SOURCEMGR_H
+
+#include <string>
+#include <vector>
+#include <cassert>
+
+namespace llvm {
+  class MemoryBuffer;
+  class SourceMgr;
+  
+class SMLoc {
+  const char *Ptr;
+public:
+  SMLoc() : Ptr(0) {}
+  SMLoc(const SMLoc &RHS) : Ptr(RHS.Ptr) {}
+  
+  bool operator==(const SMLoc &RHS) const { return RHS.Ptr == Ptr; }
+  bool operator!=(const SMLoc &RHS) const { return RHS.Ptr != Ptr; }
+
+  const char *getPointer() const { return Ptr; }
+  
+  static SMLoc getFromPointer(const char *Ptr) {
+    SMLoc L;
+    L.Ptr = Ptr;
+    return L;
+  }
+};
+
+/// SourceMgr - This owns the files read by tblgen, handles include stacks,
+/// and handles printing of diagnostics.
+class SourceMgr {
+  struct SrcBuffer {
+    /// Buffer - The memory buffer for the file.
+    MemoryBuffer *Buffer;
+    
+    /// IncludeLoc - This is the location of the parent include, or null if at
+    /// the top level.
+    SMLoc IncludeLoc;
+  };
+  
+  /// 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];
+  }
+
+  const MemoryBuffer *getMemoryBuffer(unsigned i) const {
+    assert(i < Buffers.size() && "Invalid Buffer ID!");
+    return Buffers[i].Buffer;
+  }
+  
+  SMLoc getParentIncludeLoc(unsigned i) const {
+    assert(i < Buffers.size() && "Invalid Buffer ID!");
+    return Buffers[i].IncludeLoc;
+  }
+  
+  unsigned AddNewSourceBuffer(MemoryBuffer *F, SMLoc IncludeLoc) {
+    SrcBuffer NB;
+    NB.Buffer = F;
+    NB.IncludeLoc = IncludeLoc;
+    Buffers.push_back(NB);
+    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;
+  
+  /// FindLineNumber - Find the line number for the specified location in the
+  /// specified file.  This is not a fast method.
+  unsigned FindLineNumber(SMLoc Loc, int BufferID = -1) const;
+  
+  /// PrintMessage - Emit a message about the specified location with the
+  /// specified string.
+  void PrintMessage(SMLoc Loc, const std::string &Msg) const;
+  
+private:
+  void PrintIncludeStack(SMLoc IncludeLoc) const;
+};
+  
+}  // end llvm namespace
+
+#endif