TableGen: Add initial backend for clang Driver's option parsing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89245 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/OptParserEmitter.h b/utils/TableGen/OptParserEmitter.h
new file mode 100644
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+++ b/utils/TableGen/OptParserEmitter.h
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+//===- OptParserEmitter.h - Table Driven Command Line Parsing ---*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef UTILS_TABLEGEN_OPTPARSEREMITTER_H
+#define UTILS_TABLEGEN_OPTPARSEREMITTER_H
+
+#include "TableGenBackend.h"
+
+namespace llvm {
+ /// OptParserEmitter - This tablegen backend takes an input .td file
+ /// describing a list of options and emits a data structure for parsing and
+ /// working with those options when given an input command line.
+ class OptParserEmitter : public TableGenBackend {
+ RecordKeeper &Records;
+ bool GenDefs;
+
+ public:
+ OptParserEmitter(RecordKeeper &R, bool _GenDefs)
+ : Records(R), GenDefs(_GenDefs) {}
+
+ /// run - Output the option parsing information.
+ ///
+ /// \param GenHeader - Generate the header describing the option IDs.x
+ void run(raw_ostream &OS);
+ };
+}
+
+#endif