1 | #include <fstream.hfa> |
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2 | #include <enum.hfa> |
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3 | #include <string.hfa> |
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4 | |
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5 | |
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6 | forall( E, V | TypedEnum( E, V ) | { string str( V ); } ) // routine to format value}$ |
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7 | string format_enum( E e ) { |
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8 | return label( e ) + '(' + str( value( e ) ) + ')'; // "label( value )" |
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9 | } |
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10 | enum(size_t) RGB { Red = 0xFF0000, Green = 0x00FF00, Blue = 0x0000FF }; |
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11 | // string library has conversion from size_t to string |
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12 | |
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13 | |
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14 | struct color_code { int R, G, B; }; |
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15 | enum(color_code) Rainbow { |
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16 | Red = {255, 0, 0}, Orange = {255, 127, 0}, Yellow = {255, 255, 0}, Green = {0, 255, 0}, // ... |
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17 | }; |
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18 | string str( color_code cc ) with( cc ) { |
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19 | return str( R ) + ',' + str( G ) + ',' + str( B ); // "R,G,B" |
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20 | } |
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21 | |
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22 | |
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23 | enum Fruit { Apple, Banana, Cherry }; // C enum |
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24 | const char * label( Fruit f ) { |
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25 | static const char * label[] = { "Apple, ""Banana", "Cherry" }; |
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26 | return label[f]; |
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27 | } |
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28 | |
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29 | |
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30 | int posn( Fruit f ) { return f; } |
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31 | int value( Fruit f ) { |
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32 | static const int position[] = { 0, 1, 2 }; |
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33 | return position[f]; |
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34 | } |
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35 | |
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36 | |
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37 | string str( int f ) { |
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38 | return f; |
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39 | } |
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40 | |
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41 | |
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42 | int main() { |
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43 | sout | format_enum( RGB.Green ); // "Green(65280)"}$ |
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44 | sout | format_enum( Rainbow.Green ); // "Green(0,255,0)"}$ |
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45 | sout | format_enum( Cherry ); // "Cherry(c)" |
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46 | } |
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