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struct value_t |
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{ |
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typedef void convert_fn (void const *data); typedef convert_fn *convert_fp; |
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typedef std::string str_fn (void const *data); |
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|
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enum type_code_t |
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{ |
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VALUE, |
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ARRAY, |
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MAP |
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}; |
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|
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void const *data; |
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str_fn *to_str; |
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std::type_info const *type; |
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|
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value_t (void const *data, str_fn *to_str, std::type_info const &type) |
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: data (data) |
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, to_str (to_str) |
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, type (&type) |
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{ |
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} |
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|
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std::string str () const |
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{ |
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assert (type_code () == VALUE); |
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assert (to_str != NULL); |
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return to_str (data); |
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} |
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|
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array_t const &array () const |
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{ |
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assert (type_code () == ARRAY); |
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return *(array_t const *)data; |
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} |
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|
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map_t const &map () const |
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{ |
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assert (type_code () == MAP); |
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return *(map_t const *)data; |
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} |
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|
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type_code_t type_code () const |
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{ |
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if (*type == typeid (map_t )) return MAP; |
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if (*type == typeid (array_t)) return ARRAY; |
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return VALUE; |
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} |
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}; |
