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#include <mbgl/style/sources/vector_source.hpp>
#include <mbgl/style/sources/vector_source_impl.hpp>
#include <mbgl/style/source_observer.hpp>
#include <mbgl/style/conversion/json.hpp>
#include <mbgl/style/conversion/tileset.hpp>
#include <mbgl/storage/file_source.hpp>
#include <mbgl/storage/resource_error.hpp>
#include <mbgl/util/mapbox.hpp>
#include <mbgl/util/constants.hpp>
namespace mbgl {
namespace style {
VectorSource::VectorSource(std::string id, variant<std::string, Tileset> urlOrTileset_)
: Source(makeMutable<Impl>(std::move(id))),
urlOrTileset(std::move(urlOrTileset_)) {
}
VectorSource::~VectorSource() = default;
const VectorSource::Impl& VectorSource::impl() const {
return static_cast<const Impl&>(*baseImpl);
}
const variant<std::string, Tileset>& VectorSource::getURLOrTileset() const {
return urlOrTileset;
}
optional<std::string> VectorSource::getURL() const {
if (urlOrTileset.is<Tileset>()) {
return {};
}
return urlOrTileset.get<std::string>();
}
void VectorSource::loadDescription(FileSource& fileSource) {
if (urlOrTileset.is<Tileset>()) {
baseImpl = makeMutable<Impl>(impl(), urlOrTileset.get<Tileset>());
loaded = true;
return;
}
if (req) {
return;
}
const std::string& url = urlOrTileset.get<std::string>();
req = fileSource.request(Resource::source(url), [this, url](Response res) {
if (!res.error && res.notModified) {
return;
} else if (res.error || res.noContent) {
const auto severity = loaded ? EventSeverity::Warning : EventSeverity::Error;
const std::string& message =
res.error ? res.error->message : "unexpectedly empty TileJSON";
const util::ResourceError err(message, ResourceKind::Source, res.error->status, url);
observer->onSourceError(*this, std::make_exception_ptr(err), severity);
} else {
conversion::Error error;
optional<Tileset> tileset = conversion::convertJSON<Tileset>(*res.data, error);
if (!tileset) {
const auto severity = loaded ? EventSeverity::Warning : EventSeverity::Error;
observer->onSourceError(
*this, std::make_exception_ptr(std::runtime_error(error.message)), severity);
return;
}
util::mapbox::canonicalizeTileset(*tileset, url, getType(), util::tileSize);
bool changed = impl().getTileset() != *tileset;
baseImpl = makeMutable<Impl>(impl(), *tileset);
loaded = true;
observer->onSourceLoaded(*this);
if (changed) {
observer->onSourceChanged(*this);
}
}
});
}
} // namespace style
} // namespace mbgl
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