YQL-16239 Move purecalc to public

1 files changed, 31 insertions, 0 deletions

diff --git a/library/cpp/geo/size.cpp b/library/cpp/geo/size.cpp
new file mode 100644
index 00000000000..f1bd8ab7630
--- /dev/null
+++ b/library/cpp/geo/size.cpp
@@ -0,0 +1,31 @@
+#include "size.h"
+
+#include "util.h"
+
+namespace NGeo {
+    const double TSize::BadWidth = -1.;
+    const double TSize::BadHeight = -1.;
+
+    namespace {
+        bool IsNonNegativeSize(double width, double height) {
+            return width >= 0. && height >= 0.;
+        }
+    } // namespace
+
+    TSize TSize::Parse(TStringBuf s, TStringBuf delimiter) {
+        const auto& [width, height] = PairFromString(s, delimiter);
+        Y_ENSURE_EX(IsNonNegativeSize(width, height), TBadCastException() << "Negative window size");
+        return {width, height};
+    }
+
+    TMaybe<TSize> TSize::TryParse(TStringBuf s, TStringBuf delimiter) {
+        std::pair<double, double> lonLat;
+        if (!TryPairFromString(lonLat, s, delimiter)) {
+            return {};
+        }
+        if (!IsNonNegativeSize(lonLat.first, lonLat.second)) {
+            return {};
+        }
+        return TSize{lonLat.first, lonLat.second};
+    }
+} // namespace NGeo