intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 36 insertions, 0 deletions

diff --git a/library/cpp/yson_pull/detail/percent_scalar.h b/library/cpp/yson_pull/detail/percent_scalar.h
new file mode 100644
index 0000000000..ff4571842e
--- /dev/null
+++ b/library/cpp/yson_pull/detail/percent_scalar.h
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <util/generic/strbuf.h>
+
+namespace NYsonPull::NDetail {
+    enum class percent_scalar_type {
+        boolean,
+        float64
+    };
+
+    struct percent_scalar {
+        //! Text boolean literals
+        static constexpr TStringBuf true_literal = "%true";
+        static constexpr TStringBuf false_literal = "%false";
+        //! Text floating-point literals
+        static constexpr TStringBuf nan_literal = "%nan";
+        static constexpr TStringBuf positive_inf_literal = "%inf";
+        static constexpr TStringBuf negative_inf_literal = "%-inf";
+
+        percent_scalar_type type;
+        union {
+            double as_float64;
+            bool as_boolean;
+        } value;
+
+        percent_scalar(double v) {
+            type = percent_scalar_type::float64;
+            value.as_float64 = v;
+        }
+
+        percent_scalar(bool v) {
+            type = percent_scalar_type::boolean;
+            value.as_boolean = v;
+        }
+    };
+}