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#include <mbgl/style/property_parsing.hpp>
#include <mbgl/platform/log.hpp>
#include <csscolorparser/csscolorparser.hpp>
namespace mbgl {
namespace style {
template <>
optional<bool> parseConstant(const char* name, const JSValue& value) {
if (!value.IsBool()) {
Log::Warning(Event::ParseStyle, "value of '%s' must be a boolean", name);
return {};
}
return value.GetBool();
}
template <>
optional<float> parseConstant(const char* name, const JSValue& value) {
if (!value.IsNumber()) {
Log::Warning(Event::ParseStyle, "value of '%s' must be a number, or a number function", name);
return {};
}
return value.GetDouble();
}
template <>
optional<std::string> parseConstant(const char* name, const JSValue& value) {
if (!value.IsString()) {
Log::Warning(Event::ParseStyle, "value of '%s' must be a string", name);
return {};
}
return std::string { value.GetString(), value.GetStringLength() };
}
template <>
optional<Color> parseConstant(const char* name, const JSValue& value) {
if (!value.IsString()) {
Log::Warning(Event::ParseStyle, "value of '%s' must be a string", name);
return {};
}
CSSColorParser::Color css_color = CSSColorParser::parse({ value.GetString(), value.GetStringLength() });
// Premultiply the color.
const float factor = css_color.a / 255;
return Color{ (float)css_color.r * factor,
(float)css_color.g * factor,
(float)css_color.b * factor,
css_color.a };
}
template <>
optional<std::array<float, 2>> parseConstant(const char* name, const JSValue& value) {
if (value.IsArray() && value.Size() == 2 &&
value[rapidjson::SizeType(0)].IsNumber() &&
value[rapidjson::SizeType(1)].IsNumber()) {
float first = value[rapidjson::SizeType(0)].GetDouble();
float second = value[rapidjson::SizeType(1)].GetDouble();
return { {{ first, second }} };
} else {
Log::Warning(Event::ParseStyle, "value of '%s' must be an array of two numbers", name);
return {};
}
}
template <>
optional<std::vector<float>> parseConstant(const char* name, const JSValue& value) {
if (!value.IsArray()) {
Log::Warning(Event::ParseStyle, "value of '%s' must be an array of numbers", name);
return {};
}
std::vector<float> result;
for (rapidjson::SizeType i = 0; i < value.Size(); ++i) {
const JSValue& part = value[i];
if (!part.IsNumber()) {
Log::Warning(Event::ParseStyle, "value of '%s' must be an array of numbers", name);
return {};
}
result.push_back(part.GetDouble());
}
return result;
}
template <>
optional<std::vector<std::string>> parseConstant(const char* name, const JSValue& value) {
if (!value.IsArray()) {
Log::Warning(Event::ParseStyle, "value of '%s' must be an array of strings", name);
return {};
}
std::vector<std::string> result;
for (rapidjson::SizeType i = 0; i < value.Size(); ++i) {
const JSValue& part = value[i];
if (!part.IsString()) {
Log::Warning(Event::ParseStyle, "value of '%s' must be an array of strings", name);
return {};
}
result.push_back({ part.GetString(), part.GetStringLength() });
}
return result;
}
optional<TransitionOptions> parseTransitionOptions(const char *, const JSValue& value) {
if (!value.IsObject()) {
return {};
}
optional<Duration> duration;
if (value.HasMember("duration") && value["duration"].IsNumber()) {
duration.emplace(Milliseconds(value["duration"].GetUint()));
}
optional<Duration> delay;
if (value.HasMember("delay") && value["delay"].IsNumber()) {
delay.emplace(Milliseconds(value["delay"].GetUint()));
}
if (!duration && !delay) {
return {};
}
return TransitionOptions(duration, delay);
}
} // namespace style
} // namespace mbgl
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