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#include <mbgl/platform/factory.hpp>
#include <mbgl/storage/default_file_source.hpp>
namespace mbgl {
namespace platform {
std::shared_ptr<FileSource> Factory::sharedFileSource(const FileSourceOptions& options, std::shared_ptr<FileSource> initial) {
static std::weak_ptr<FileSource> weak;
if (initial) {
// We can only assign a custom initial value if the weak pointer object has zero references.
assert(weak.use_count() == 0);
weak = initial;
}
std::shared_ptr<FileSource> strong = weak.lock();
if (!strong) {
auto defaultFileSource = std::make_shared<DefaultFileSource>(options.cachePath(), options.assetRoot(), options.maximumCacheSize());
defaultFileSource->setAccessToken(options.accessToken());
weak = strong = defaultFileSource;
}
return strong;
}
} // namespace platform
} // namespace mbgl
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