GenInfo.h

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//===- GenInfo.h - Generator info -------------------------------*- C++ -*-===//
//
// Part of the MLIR Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef MLIR_TABLEGEN_GENINFO_H_
#define MLIR_TABLEGEN_GENINFO_H_

#include "mlir/Support/LLVM.h"
#include "llvm/ADT/StringRef.h"
#include <functional>

namespace llvm {
class RecordKeeper;
} // end namespace llvm

namespace mlir {

using GenFunction = std::function<bool(const llvm::RecordKeeper &recordKeeper,
                                       raw_ostream &os)>;

class GenInfo {
public:
  GenInfo(StringRef arg, StringRef description, GenFunction generator)
      : arg(arg), description(description), generator(generator) {}

  bool invoke(const llvm::RecordKeeper &recordKeeper, raw_ostream &os) const {
    assert(generator && "Cannot call generator with null generator");
    return generator(recordKeeper, os);
  }

  StringRef getGenArgument() const { return arg; }

  StringRef getGenDescription() const { return description; }

private:
  // The argument with which to invoke the generator via mlir-tblgen.
  StringRef arg;

  // Description of the generator.
  StringRef description;

  // Generator function.
  GenFunction generator;
};

struct GenRegistration {
  GenRegistration(StringRef arg, StringRef description, GenFunction function);
};

} // end namespace mlir

#endif // MLIR_TABLEGEN_GENINFO_H_