Factor the internals of SourceManager (specially, LineTableInfo) into a separate Internals header. No functionality change

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68960 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 96 deletions

diff --git a/lib/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index 2c667811a1..d3fbeeb1bb 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Basic/SourceManager.h"
+#include "clang/Basic/SourceManagerInternals.h"
 #include "clang/Basic/FileManager.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/MemoryBuffer.h"
@@ -57,102 +58,6 @@ const llvm::MemoryBuffer *ContentCache::getBuffer() const {
   return Buffer;
 }
 
-//===----------------------------------------------------------------------===//
-// Line Table Implementation
-//===----------------------------------------------------------------------===//
-
-namespace clang {
-struct LineEntry {
-  /// FileOffset - The offset in this file that the line entry occurs at.
-  unsigned FileOffset;
-  
-  /// LineNo - The presumed line number of this line entry: #line 4.
-  unsigned LineNo;
-  
-  /// FilenameID - The ID of the filename identified by this line entry:
-  /// #line 4 "foo.c".  This is -1 if not specified.
-  int FilenameID;
-  
-  /// Flags - Set the 0 if no flags, 1 if a system header, 
-  SrcMgr::CharacteristicKind FileKind;
-  
-  /// IncludeOffset - This is the offset of the virtual include stack location,
-  /// which is manipulated by GNU linemarker directives.  If this is 0 then
-  /// there is no virtual #includer.
-  unsigned IncludeOffset;
-  
-  static LineEntry get(unsigned Offs, unsigned Line, int Filename,
-                       SrcMgr::CharacteristicKind FileKind,
-                       unsigned IncludeOffset) {
-    LineEntry E;
-    E.FileOffset = Offs;
-    E.LineNo = Line;
-    E.FilenameID = Filename;
-    E.FileKind = FileKind;
-    E.IncludeOffset = IncludeOffset;
-    return E;
-  }
-};
-
-// needed for FindNearestLineEntry (upper_bound of LineEntry)
-inline bool operator<(const LineEntry &lhs, const LineEntry &rhs) {
-  // FIXME: should check the other field?
-  return lhs.FileOffset < rhs.FileOffset;
-}
-
-inline bool operator<(const LineEntry &E, unsigned Offset) {
-  return E.FileOffset < Offset;
-}
-
-inline bool operator<(unsigned Offset, const LineEntry &E) {
-  return Offset < E.FileOffset;
-}
-  
-/// LineTableInfo - This class is used to hold and unique data used to
-/// represent #line information.
-class LineTableInfo {
-  /// FilenameIDs - This map is used to assign unique IDs to filenames in
-  /// #line directives.  This allows us to unique the filenames that
-  /// frequently reoccur and reference them with indices.  FilenameIDs holds
-  /// the mapping from string -> ID, and FilenamesByID holds the mapping of ID
-  /// to string.
-  llvm::StringMap<unsigned, llvm::BumpPtrAllocator> FilenameIDs;
-  std::vector<llvm::StringMapEntry<unsigned>*> FilenamesByID;
-  
-  /// LineEntries - This is a map from FileIDs to a list of line entries (sorted
-  /// by the offset they occur in the file.
-  std::map<unsigned, std::vector<LineEntry> > LineEntries;
-public:
-  LineTableInfo() {
-  }
-  
-  void clear() {
-    FilenameIDs.clear();
-    FilenamesByID.clear();
-    LineEntries.clear();
-  }
-  
-  ~LineTableInfo() {}
-  
-  unsigned getLineTableFilenameID(const char *Ptr, unsigned Len);
-  const char *getFilename(unsigned ID) const {
-    assert(ID < FilenamesByID.size() && "Invalid FilenameID");
-    return FilenamesByID[ID]->getKeyData();
-  }
-  
-  void AddLineNote(unsigned FID, unsigned Offset,
-                   unsigned LineNo, int FilenameID);
-  void AddLineNote(unsigned FID, unsigned Offset,
-                   unsigned LineNo, int FilenameID,
-                   unsigned EntryExit, SrcMgr::CharacteristicKind FileKind);
-
-  
-  /// FindNearestLineEntry - Find the line entry nearest to FID that is before
-  /// it.  If there is no line entry before Offset in FID, return null.
-  const LineEntry *FindNearestLineEntry(unsigned FID, unsigned Offset);
-};
-} // namespace clang
-
 unsigned LineTableInfo::getLineTableFilenameID(const char *Ptr, unsigned Len) {
   // Look up the filename in the string table, returning the pre-existing value
   // if it exists.