Track expression language from one place in ClangExpressionParser

The current expression language is currently tracked in a few places within the ClangExpressionParser constructor. 
This patch adds a private lldb::LanguageType attribute to the ClangExpressionParser class and tracks the expression language from that one place.

Author: Luke Drummond <luke.drummond@codeplay.com>
Differential Revision: http://reviews.llvm.org/D17719

llvm-svn: 263099

1 files changed, 2 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.h b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.h
index 3c055380b83..288be8df470 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.h
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.h
@@ -129,6 +129,8 @@ private:
     class LLDBPreprocessorCallbacks;
     LLDBPreprocessorCallbacks               *m_pp_callbacks;         ///< Called when the preprocessor encounters module imports
     std::unique_ptr<ClangASTContext>         m_ast_context;
+    lldb::LanguageType                       m_language;            ///< The the source language of the expression
+                                                                    /// which may be explicitly set or inferred.
 };
     
 }