set_lang_defaults_arg4.h

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#include <string>
#include <vector>
 
#include <clang/Lex/PreprocessorOptions.h>
 
/* Convert a clang::PreprocessorOptions to the fourth argument
 * of CompilerInvocation::setLangDefaults, which may be either
 * a clang::PreprocessorOptions itself or its Includes.
 */
struct setLangDefaultsArg4 {
  setLangDefaultsArg4(clang::PreprocessorOptions &PO) : PO(PO) {}
  operator clang::PreprocessorOptions &() { return PO; }
  operator std::vector<std::string> &() { return PO.Includes; }
 
  clang::PreprocessorOptions &PO;
};