json/flat: don't try to parse empty files
avoids debug assertions fetching data pointer on empty mappings
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@ -172,6 +172,9 @@ std::vector<json::flat::item>
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json::flat::parse (const boost::filesystem::path &path)
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{
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util::mapped_file f (path.string ().c_str ());
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if (f.empty ())
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throw parse_error ("empty file");
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return parse ((const char *)f.cbegin (), (const char*)f.cend ());
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}
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