Successor.h

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//===- Successor.h - TableGen successor definitions -------------*- C++ -*-===//
//
// Part of the LLVM 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_SUCCESSOR_H_
#define MLIR_TABLEGEN_SUCCESSOR_H_
 
#include "mlir/Support/LLVM.h"
#include "mlir/TableGen/Constraint.h"
 
namespace mlir {
namespace tblgen {
 
// Wrapper class providing helper methods for accessing Successor defined in
// TableGen.
class Successor : public Constraint {
public:
  using Constraint::Constraint;
 
  static bool classof(const Constraint *c) {
    return c->getKind() == CK_Successor;
  }
 
  // Returns true if this successor is variadic.
  bool isVariadic() const;
};
 
// A struct bundling a successor's constraint and its name.
struct NamedSuccessor {
  // Returns true if this successor is variadic.
  bool isVariadic() const { return constraint.isVariadic(); }
 
  StringRef name;
  Successor constraint;
};
 
} // namespace tblgen
} // namespace mlir
 
#endif // MLIR_TABLEGEN_SUCCESSOR_H_