Mega-patch: ripped SourceManager out of Diagnostic/DiagnosticClient.  Now
SourceManager is passed by reference, allowing the SourceManager to be
associated with a specific translation unit, and not the entire execution
of the driver.

Modified all users of Diagnostics to comply with this new interface.

Integrated SourceManager as a member variable of TargetInfo. TargetInfo will
eventually be associated with a single translation unit (just like
SourceManager).

Made the SourceManager reference in ASTContext private. Provided accessor
getSourceManager() for clients to use instead. Modified clients to comply with
new interface.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44878 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/TextDiagnostics.h b/Driver/TextDiagnostics.h
index 27d9d3a..ad5e4cb 100644
--- a/Driver/TextDiagnostics.h
+++ b/Driver/TextDiagnostics.h
@@ -24,23 +24,25 @@
 class TextDiagnostics : public DiagnosticClient {
   HeaderSearch *TheHeaderSearch;
 protected:
-  SourceManager &SourceMgr;
-
   std::string FormatDiagnostic(Diagnostic &Diags, Diagnostic::Level Level,
                                diag::kind ID,
                                const std::string *Strs,
                                unsigned NumStrs);
 public:
-  TextDiagnostics(SourceManager &sourceMgr) : SourceMgr(sourceMgr) {}
+  TextDiagnostics() {}
   virtual ~TextDiagnostics();
 
   void setHeaderSearch(HeaderSearch &HS) { TheHeaderSearch = &HS; }
 
   virtual bool IgnoreDiagnostic(Diagnostic::Level Level, 
-                                SourceLocation Pos);
+                                SourceLocation Pos,
+                                SourceManager& SrcMgr);
+
   virtual void HandleDiagnostic(Diagnostic &Diags, Diagnostic::Level DiagLevel,
                                 SourceLocation Pos,
-                                diag::kind ID, const std::string *Strs,
+                                diag::kind ID,
+                                SourceManager& SrcMgr,
+                                const std::string *Strs,
                                 unsigned NumStrs,
                                 const SourceRange *Ranges, 
                                 unsigned NumRanges) = 0;