redgrep.h

// Copyright 2012 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef REDGREP_REDGREP_H_
#define REDGREP_REDGREP_H_

#include "llvm/ADT/StringRef.h"
#include "regexp.h"

// Represents a regular expression.
// The interface is intended to resemble that of RE and RE2.
class RED {
 public:
  explicit RED(llvm::StringRef str);
  ~RED();

  // Returns true if the RED object is usable, false otherwise.
  // TODO(junyer): Plumb and expose errors from the parser.
  bool ok() const { return ok_; }

  // Returns the result of matching str using re.
  static bool FullMatch(llvm::StringRef str, const RED& re);

 private:
  bool ok_;
  redgrep::Fun fun_;

  RED(const RED&) = delete;
  RED& operator=(const RED&) = delete;
};

#endif  // REDGREP_REDGREP_H_