46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
#ifndef MBGL_STYLE_VALUE
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#define MBGL_STYLE_VALUE
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#include <mbgl/util/variant.hpp>
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#include <mbgl/util/pbf.hpp>
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#include <rapidjson/document.h>
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#include <cstdlib>
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#include <cerrno>
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namespace mbgl {
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typedef mapbox::util::variant<bool, int64_t, uint64_t, double, std::string> Value;
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std::string toString(const Value &value);
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Value parseValue(pbf data);
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Value parseValue(const rapidjson::Value&);
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namespace util {
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inline bool parseNumericString(const std::string &str, double &result) {
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char *end = nullptr;
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const char *begin = str.c_str();
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result = std::strtod(begin, &end);
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while (*end != '\0' && isspace(*end)) end++; // eat whitespace after the end
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return errno == 0 && end - begin == long(str.size());
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}
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}
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template <typename T>
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T toNumber(const Value &value) {
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if (value.is<std::string>()) {
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double val;
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return util::parseNumericString(value.get<std::string>(), val) ? val : 0;
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}
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else if (value.is<bool>()) return value.get<bool>();
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else if (value.is<int64_t>()) return value.get<int64_t>();
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else if (value.is<uint64_t>()) return value.get<uint64_t>();
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else if (value.is<double>()) return value.get<double>();
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else return 0;
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}
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}
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#endif
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