/* -*- coding: utf-8 -*-
 *
 * Copyright 2020 IBM RESEARCH. 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 __QASM_SCANNER_LINE_CONTEXT_H
#define __QASM_SCANNER_LINE_CONTEXT_H

#include <cassert>
#include <string>
#include <vector>

namespace QASM {

class ASTScannerLineContext {
private:
  static ASTScannerLineContext LC;
  std::string Line;

  ASTScannerLineContext() {}

public:
  static ASTScannerLineContext &Instance() { return LC; }

  ~ASTScannerLineContext() = default;

  void Reset() { Line = std::string(); }

  const std::string &GetLine() { return ASTScannerLineContext::Line; }

  void Add(const char *S) {
    if (S && *S)
      Line.append(S);
  }

  void Add(const std::string &S) {
    if (!S.empty())
      Line.append(S);
  }

  std::vector<std::string> CreateParameterList();
};

} // namespace QASM

#endif // __QASM_SCANNER_LINE_CONTEXT_H
