src/external/muparser/muParserInt.h

   1 /*
   2
   3          _____  __ _____________ _______  ______ ___________
   4         /     \|  |  \____ \__  \\_  __ \/  ___// __ \_  __ \
   5    |  Y Y  \  |  /  |_> > __ \|  | \/\___ \\  ___/|  | \/
   6    |__|_|  /____/|   __(____  /__|  /____  >\___  >__|
   7                  \/      |__|       \/           \/     \/
   8    Copyright (C) 2004 - 2020 Ingo Berg
   9
  10         Redistribution and use in source and binary forms, with or without modification, are permitted
  11         provided that the following conditions are met:
  12
  13           * Redistributions of source code must retain the above copyright notice, this list of
  14                 conditions and the following disclaimer.
  15           * Redistributions in binary form must reproduce the above copyright notice, this list of
  16                 conditions and the following disclaimer in the documentation and/or other materials provided
  17                 with the distribution.
  18
  19         THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
  20         IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  21         FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
  22         CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23         DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24         DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25         IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  26         OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27 */
  28
  29 #ifndef MU_PARSER_INT_H
  30 #define MU_PARSER_INT_H
  31
  32 #include "muParserBase.h"
  33 #include <vector>
  34
  35
  36 /** \file
  37         \brief Definition of a parser using integer value.
  38 */
  39
  40
  41 namespace mu
  42 {
  43
  44         /** \brief Mathematical expressions parser.
  45
  46           This version of the parser handles only integer numbers. It disables the built in operators thus it is
  47           slower than muParser. Integer values are stored in the double value_type and converted if needed.
  48         */
  49         class ParserInt : public ParserBase
  50         {
  51         private:
  52                 static int  Round(value_type v) { return (int)(v + ((v >= 0) ? 0.5 : -0.5)); };
  53
  54                 static value_type  Abs(value_type);
  55                 static value_type  Sign(value_type);
  56                 static value_type  Ite(value_type, value_type, value_type);
  57                 // !! The unary Minus is a MUST, otherwise you can't use negative signs !!
  58                 static value_type  UnaryMinus(value_type);
  59                 // Functions with variable number of arguments
  60                 static value_type  Sum(const value_type* a_afArg, int a_iArgc);  // sum
  61                 static value_type  Min(const value_type* a_afArg, int a_iArgc);  // minimum
  62                 static value_type  Max(const value_type* a_afArg, int a_iArgc);  // maximum
  63                 // binary operator callbacks
  64                 static value_type  Add(value_type v1, value_type v2);
  65                 static value_type  Sub(value_type v1, value_type v2);
  66                 static value_type  Mul(value_type v1, value_type v2);
  67                 static value_type  Div(value_type v1, value_type v2);
  68                 static value_type  Mod(value_type v1, value_type v2);
  69                 static value_type  Pow(value_type v1, value_type v2);
  70                 static value_type  Shr(value_type v1, value_type v2);
  71                 static value_type  Shl(value_type v1, value_type v2);
  72                 static value_type  LogAnd(value_type v1, value_type v2);
  73                 static value_type  LogOr(value_type v1, value_type v2);
  74                 static value_type  And(value_type v1, value_type v2);
  75                 static value_type  Or(value_type v1, value_type v2);
  76                 static value_type  Xor(value_type v1, value_type v2);
  77                 static value_type  Less(value_type v1, value_type v2);
  78                 static value_type  Greater(value_type v1, value_type v2);
  79                 static value_type  LessEq(value_type v1, value_type v2);
  80                 static value_type  GreaterEq(value_type v1, value_type v2);
  81                 static value_type  Equal(value_type v1, value_type v2);
  82                 static value_type  NotEqual(value_type v1, value_type v2);
  83                 static value_type  Not(value_type v1);
  84
  85                 static int IsHexVal(const char_type* a_szExpr, int* a_iPos, value_type* a_iVal);
  86                 static int IsBinVal(const char_type* a_szExpr, int* a_iPos, value_type* a_iVal);
  87                 static int IsVal(const char_type* a_szExpr, int* a_iPos, value_type* a_iVal);
  88
  89                 /** \brief A facet class used to change decimal and thousands separator. */
  90                 template<class TChar>
  91                 class change_dec_sep : public std::numpunct<TChar>
  92                 {
  93                 public:
  94
  95                         explicit change_dec_sep(char_type cDecSep, char_type cThousandsSep = 0, int nGroup = 3)
  96                                 :std::numpunct<TChar>()
  97                                 , m_cDecPoint(cDecSep)
  98                                 , m_cThousandsSep(cThousandsSep)
  99                                 , m_nGroup(nGroup)
 100                         {}
 101
 102                 protected:
 103
 104                         virtual char_type do_decimal_point() const
 105                         {
 106                                 return m_cDecPoint;
 107                         }
 108
 109                         virtual char_type do_thousands_sep() const
 110                         {
 111                                 return m_cThousandsSep;
 112                         }
 113
 114                         virtual std::string do_grouping() const
 115                         {
 116                                 // fix for issue 4: https://code.google.com/p/muparser/issues/detail?id=4
 117                                 // courtesy of Jens Bartsch
 118                                 // original code:
 119                                 //        return std::string(1, (char)m_nGroup);
 120                                 // new code:
 121                                 return std::string(1, (char)(m_cThousandsSep > 0 ? m_nGroup : CHAR_MAX));
 122                         }
 123
 124                 private:
 125
 126                         int m_nGroup;
 127                         char_type m_cDecPoint;
 128                         char_type m_cThousandsSep;
 129                 };
 130
 131         public:
 132                 ParserInt();
 133
 134                 virtual void InitFun();
 135                 virtual void InitOprt();
 136                 virtual void InitConst();
 137                 virtual void InitCharSets();
 138         };
 139
 140 } // namespace mu
 141
 142 #endif
 143