1 files changed, 59 insertions, 0 deletions
diff --git a/clang-tools-extra/cpp11-migrate/Core/SyntaxCheck.cpp b/clang-tools-extra/cpp11-migrate/Core/SyntaxCheck.cpp
new file mode 100644
index 00000000000..65877668ee4
--- /dev/null
+++ b/clang-tools-extra/cpp11-migrate/Core/SyntaxCheck.cpp
@@ -0,0 +1,59 @@
+#include "SyntaxCheck.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/FrontendActions.h"
+#include "clang/Tooling/Tooling.h"
+
+using namespace clang;
+using namespace tooling;
+
+class SyntaxCheck : public SyntaxOnlyAction {
+public:
+  SyntaxCheck(const FileOverrides &Overrides) : Overrides(Overrides) {}
+
+  virtual bool BeginSourceFileAction(CompilerInstance &CI, StringRef Filename) {
+    if (!SyntaxOnlyAction::BeginSourceFileAction(CI, Filename))
+      return false;
+
+    FileOverrides::const_iterator I = Overrides.find(Filename);
+    if (I != Overrides.end())
+      I->second.applyOverrides(CI.getSourceManager(), CI.getFileManager());
+
+    return true;
+  }
+
+private:
+  const FileOverrides &Overrides;
+};
+
+class SyntaxCheckFactory : public FrontendActionFactory {
+public:
+  SyntaxCheckFactory(const FileOverrides &Overrides)
+      : Overrides(Overrides) {}
+
+  virtual FrontendAction *create() { return new SyntaxCheck(Overrides); }
+
+private:
+  const FileOverrides &Overrides;
+};
+
+class SyntaxArgumentsAdjuster : public ArgumentsAdjuster {
+  CommandLineArguments Adjust(const CommandLineArguments &Args) {
+    CommandLineArguments AdjustedArgs = Args;
+    AdjustedArgs.push_back("-fsyntax-only");
+    AdjustedArgs.push_back("-std=c++11");
+    return AdjustedArgs;
+  }
+};
+
+bool doSyntaxCheck(const CompilationDatabase &Database,
+                   const std::vector<std::string> &SourcePaths,
+                   const FileOverrides &Overrides) {
+  ClangTool SyntaxTool(Database, SourcePaths);
+
+  // Ensure C++11 support is enabled.
+  // FIXME: This isn't necessary anymore since the Migrator requires C++11
+  // to be enabled in the CompilationDatabase. Remove later.
+  SyntaxTool.setArgumentsAdjuster(new SyntaxArgumentsAdjuster);
+
+  return SyntaxTool.run(new SyntaxCheckFactory(Overrides)) == 0;
+}