[ASTImporter] Add unit tests for structural equivalence

Summary:
This patch add new tests for structural equivalence. For that a new
common header is created which holds the test related language specific
types and functions.

Reviewers: a.sidorin, xazax.hun, szepet

Subscribers: rnkovacs, dkrupp, cfe-commits

Differential Revision: https://reviews.llvm.org/D46867

llvm-svn: 333166

1 files changed, 60 insertions, 0 deletions

diff --git a/clang/unittests/AST/Language.cpp b/clang/unittests/AST/Language.cpp
new file mode 100644
index 00000000000..972c2a5495a
--- /dev/null
+++ b/clang/unittests/AST/Language.cpp
@@ -0,0 +1,60 @@
+//===------ unittest/AST/Language.cpp - AST unit test support -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines language options for AST unittests.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Language.h"
+
+namespace clang {
+namespace ast_matchers {
+
+ArgVector getBasicRunOptionsForLanguage(Language Lang) {
+  ArgVector BasicArgs;
+  // Test with basic arguments.
+  switch (Lang) {
+  case Lang_C:
+    BasicArgs = {"-x", "c", "-std=c99"};
+    break;
+  case Lang_C89:
+    BasicArgs = {"-x", "c", "-std=c89"};
+    break;
+  case Lang_CXX:
+    BasicArgs = {"-std=c++98", "-frtti"};
+    break;
+  case Lang_CXX11:
+    BasicArgs = {"-std=c++11", "-frtti"};
+    break;
+  case Lang_CXX14:
+    BasicArgs = {"-std=c++14", "-frtti"};
+    break;
+  case Lang_OpenCL:
+  case Lang_OBJCXX:
+    llvm_unreachable("Not implemented yet!");
+  }
+  return BasicArgs;
+}
+
+RunOptions getRunOptionsForLanguage(Language Lang) {
+  ArgVector BasicArgs = getBasicRunOptionsForLanguage(Lang);
+
+  // For C++, test with "-fdelayed-template-parsing" enabled to handle MSVC
+  // default behaviour.
+  if (isCXX(Lang)) {
+    ArgVector ArgsForDelayedTemplateParse = BasicArgs;
+    ArgsForDelayedTemplateParse.emplace_back("-fdelayed-template-parsing");
+    return {BasicArgs, ArgsForDelayedTemplateParse};
+  }
+
+  return {BasicArgs};
+}
+
+} // end namespace ast_matchers
+} // end namespace clang