glemon: map_value.cc@244d8c60b997

     1 #include "map_value.h"

     2 #include <sstream>

     3 #include <iostream>

     5 MapValue::MapValue()

6 {

     7   //std::cout << __PRETTY_FUNCTION__ << std::endl;

     8   has_value = false;

9 }

    11 MapValue::MapValue(double d)

    12 {

    13   //std::cout << __PRETTY_FUNCTION__ << std::endl;

    14   p_value = new double(d);

    15   type = NUMERIC;

    16   has_value = true;

    17 }

    19 MapValue::MapValue(std::string str)

    20 {

    21   //std::cout << __PRETTY_FUNCTION__ << std::endl;

    22   p_value = new std::string(str);

    23   type = STRING;

    24   has_value = true;

    25 }

    27 MapValue::MapValue(const char* str)

    28 {

    29   //std::cout << __PRETTY_FUNCTION__ << std::endl;

    30   p_value = new std::string(str);

    31   type = STRING;

    32   has_value = true;

    33 }

    35 MapValue::operator double() const

    36 {

    37   //std::cout << __PRETTY_FUNCTION__ << std::endl;

    38   if (!has_value) throw IllegalOperation();

    39   if (type == NUMERIC)

    40     return *(static_cast<double*>(p_value));

    41   else

    42     throw IllegalOperation();

    43 }

    45 MapValue::operator std::string() const

    46 {

    47   //std::cout << __PRETTY_FUNCTION__ << std::endl;

    48   if (!has_value) throw IllegalOperation();

    49   std::string ret;

    50   switch (type)

    51   {

    52     case NUMERIC:

    53       {

    54         double d = *(static_cast<double*>(p_value));

    55         std::ostringstream ostr;

    56         ostr << d;

    57         ret = ostr.str();

    58       }

    59       break;

    60     case STRING:

    61       ret = *(static_cast<std::string*>(p_value));

    62       break;

    63   }

    64   return ret;

    65 }

    67 MapValue::MapValue(const MapValue& v)

    68 {

    69   //std::cout << __PRETTY_FUNCTION__ << std::endl;

    70   if (!v.has_value) throw IllegalOperation();

    71   has_value = true;

    72   type = v.type;

    73   switch (v.type)

    74   {

    75     case NUMERIC:

    76       p_value = new double(*(static_cast<double*>(v.p_value)));

    77       break;

    78     case STRING:

    79       p_value = new std::string(*(static_cast<std::string*>(v.p_value)));

    80       break;

    81   }

    82 }

    84 MapValue& MapValue::operator=(const MapValue& v)

    85 {

    86   //std::cout << __PRETTY_FUNCTION__ << std::endl;

    87   if (&v != this)

    88   {

    89     if (!v.has_value) throw IllegalOperation();

    90     clear();

    91     has_value = true;

    92     type = v.type;

    93     switch (v.type)

    94     {

    95       case NUMERIC:

    96         p_value = new double(*(static_cast<double*>(v.p_value)));

    97         break;

    98       case STRING:

    99         p_value = new std::string(*(static_cast<std::string*>(v.p_value)));

   100         break;

   101     }

   102   }

   103   return *this;

   104 }

   106 MapValue::~MapValue()

   107 {

   108   //std::cout << __PRETTY_FUNCTION__ << std::endl;

   109   clear();

   110 }

   112 void MapValue::clear()

   113 {

   114   //std::cout << __PRETTY_FUNCTION__ << std::endl;

   115   if (!has_value) return;

   116   switch (type)

   117   {

   118     case NUMERIC:

   119       delete static_cast<double*>(p_value);

   120       break;

   121     case STRING:

   122       delete static_cast<std::string*>(p_value);

   123       break;

   124   }

   125 }

   127 MapValue::Type MapValue::getType() const

   128 {

   129   //std::cout << __PRETTY_FUNCTION__ << std::endl;

   130   return type;

   131 }

   133 bool MapValue::hasValue() const

   134 {

   135   //std::cout << __PRETTY_FUNCTION__ << std::endl;

   136   return has_value;

   137 }

   139 std::ostream& operator<<(std::ostream &os, const MapValue& v)

   140 {

   141   //std::cout << __PRETTY_FUNCTION__ << std::endl;

   142   if (!v.has_value) return os;

   143   switch (v.type)

   144   {

   145     case MapValue::NUMERIC:

   146       os << *(static_cast<double*>(v.p_value));

   147       break;

   148     case MapValue::STRING:

   149       os << *(static_cast<std::string*>(v.p_value));

   150       break;

   151   }

   152   return os;

   153 }

author	Akos Ladanyi <ladanyi@tmit.bme.hu>
	Thu, 10 Jul 2008 18:53:00 +0100
changeset 4	244d8c60b997
permissions	-rw-r--r--