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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2017 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
#ifndef mathlibH
#define mathlibH
//---------------------------------------------------------------------------
#include "config.h"
#include <sstream>
#include <string>
/// @addtogroup Core
/// @{
/** @brief simple math functions that uses operands stored in std::string. useful when performing math on tokens. */
class CPPCHECKLIB MathLib {
friend class TestMathLib;
public:
/** @brief value class */
class value {
private:
long long intValue;
double doubleValue;
enum { INT, LONG, LONGLONG, FLOAT } type;
bool isUnsigned;
void promote(const value &v);
public:
explicit value(const std::string &s);
std::string str() const;
bool isInt() const {
return type != FLOAT;
}
bool isFloat() const {
return type == FLOAT;
}
double getDoubleValue() const {
return isFloat() ? doubleValue : (double)intValue;
}
static value calc(char op, const value &v1, const value &v2);
int compare(const value &v) const;
value add(int v) const;
value shiftLeft(const value &v) const;
value shiftRight(const value &v) const;
};
typedef long long bigint;
typedef unsigned long long biguint;
static const int bigint_bits;
static bigint toLongNumber(const std::string & str);
static biguint toULongNumber(const std::string & str);
template<class T> static std::string toString(T value) {
std::ostringstream result;
result << value;
return result.str();
}
static double toDoubleNumber(const std::string & str);
static bool isInt(const std::string & str);
static bool isFloat(const std::string &str);
static bool isDecimalFloat(const std::string &str);
static bool isNegative(const std::string &str);
static bool isPositive(const std::string &str);
static bool isDec(const std::string & str);
static bool isFloatHex(const std::string& str);
static bool isIntHex(const std::string& str);
static bool isOct(const std::string& str);
static bool isBin(const std::string& str);
static std::string getSuffix(const std::string& value);
static bool isValidIntegerSuffix(const std::string& str);
static bool isValidIntegerSuffix(std::string::const_iterator it, std::string::const_iterator end);
static std::string add(const std::string & first, const std::string & second);
static std::string subtract(const std::string & first, const std::string & second);
static std::string multiply(const std::string & first, const std::string & second);
static std::string divide(const std::string & first, const std::string & second);
static std::string mod(const std::string & first, const std::string & second);
static std::string incdec(const std::string & var, const std::string & op);
static std::string calculate(const std::string & first, const std::string & second, char action);
static std::string sin(const std::string & tok);
static std::string cos(const std::string & tok);
static std::string tan(const std::string & tok);
static std::string abs(const std::string & tok);
static bool isEqual(const std::string & first, const std::string & second);
static bool isNotEqual(const std::string & first, const std::string & second);
static bool isGreater(const std::string & first, const std::string & second);
static bool isGreaterEqual(const std::string & first, const std::string & second);
static bool isLess(const std::string & first, const std::string & second);
static bool isLessEqual(const std::string & first, const std::string & second);
static bool isNullValue(const std::string & str);
/**
* Return true if given character is 0,1,2,3,4,5,6 or 7.
* @param[in] c The character to check
* @return true if given character is octal digit.
*/
static bool isOctalDigit(char c);
/**
* \param[in] str character literal
* @return Number of internal representation of the character literal
* */
static MathLib::bigint characterLiteralToLongNumber(const std::string& str);
/**
* \param[in] iCode Code being considered
* \param[in] iPos A posision within iCode
* \return Whether iCode[iPos] is a C++14 digit separator
*/
static bool isDigitSeparator(const std::string& iCode, std::string::size_type iPos);
private:
/*
* \param iLiteral A character literal
* \return The equivalent character literal with all escapes interpreted
*/
static std::string normalizeCharacterLiteral(const std::string& iLiteral);
};
MathLib::value operator+(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator-(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator*(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator/(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator%(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator&(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator|(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator^(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator<<(const MathLib::value &v1, const MathLib::value &v2);
MathLib::value operator>>(const MathLib::value &v1, const MathLib::value &v2);
template<> CPPCHECKLIB std::string MathLib::toString(double value); // Declare specialization to avoid linker problems
/// @}
//---------------------------------------------------------------------------
#endif // mathlibH