/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying

   file LICENSE.rst or https://cmake.org/licensing for details.  */

#pragma once

#include "cmConfigure.h" // IWYU pragma: keep

#include <cstdint>

#include <string>

#include <vector>

class cmExprParserHelper

{

public:

  struct ParserType

  {

    std::int64_t Number;

  };

  cmExprParserHelper();

  ~cmExprParserHelper();

  int ParseString(char const* str, int verb);

  int LexInput(char* buf, int maxlen);

  void Error(char const* str);

  void Warning(std::string str);

  void SetResult(std::int64_t value);

  std::int64_t GetResult() const { return this->Result; }

  char const* GetError() { return this->ErrorString.c_str(); }

  void UnexpectedChar(char c);

  std::string const& GetWarning() const { return this->WarningString; }

  std::int64_t ShL(std::int64_t l, std::int64_t r);

  std::int64_t ShR(std::int64_t l, std::int64_t r);

  std::int64_t Add(std::int64_t l, std::int64_t r);

  std::int64_t Sub(std::int64_t l, std::int64_t r);

  std::int64_t Mul(std::int64_t l, std::int64_t r);

  std::int64_t Div(std::int64_t l, std::int64_t r);

  std::int64_t Mod(std::int64_t l, std::int64_t r);

  std::int64_t Neg(std::int64_t x);

  static bool AddOverflow(long l, long r, long* p);

  static bool AddOverflow(long long l, long long r, long long* p);

  static bool SubOverflow(long l, long r, long* p);

  static bool SubOverflow(long long l, long long r, long long* p);

  static bool MulOverflow(long l, long r, long* p);

  static bool MulOverflow(long long l, long long r, long long* p);

private:

  std::string::size_type InputBufferPos;

  std::string InputBuffer;

  std::vector<char> OutputBuffer;

  int CurrentLine;

  int Verbose;

  void Print(char const* place, char const* str);

  void SetError(std::string errorString);

  std::int64_t Result;

  char const* FileName;

  long FileLine;

  std::string ErrorString;

  std::string WarningString;

};

#define YYSTYPE cmExprParserHelper::ParserType

#define YYSTYPE_IS_DECLARED

#define YY_EXTRA_TYPE cmExprParserHelper*

#define YY_DECL int cmExpr_yylex(YYSTYPE* yylvalp, yyscan_t yyscanner)