Remove Diagnostic.h include from Preprocessor.h.

- Move the offending methods out of line and fix transitive includers.
- This required changing an enum in the PPCallback API into an unsigned.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149782 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index fc6efb6..7b1ddf6 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -336,6 +336,21 @@
   setCodeCompletionReached();
 }
 
+void Preprocessor::setCodeCompletionReached() {
+  assert(isCodeCompletionEnabled() && "Code-completion not enabled!");
+  CodeCompletionReached = true;
+  // Silence any diagnostics that occur after we hit the code-completion.
+  getDiagnostics().setSuppressAllDiagnostics(true);
+}
+
+DiagnosticBuilder Preprocessor::Diag(SourceLocation Loc, unsigned DiagID) const{
+  return Diags->Report(Loc, DiagID);
+}
+
+DiagnosticBuilder Preprocessor::Diag(const Token &Tok, unsigned DiagID) const {
+  return Diags->Report(Tok.getLocation(), DiagID);
+}
+
 /// getSpelling - This method is used to get the spelling of a token into a
 /// SmallVector. Note that the returned StringRef may not point to the
 /// supplied buffer if a copy can be avoided.