Test for fake.ksy

src-fake-test/BuilderOptions.h

@@ -0,0 +1,66 @@
+// BSD 3-Clause License; see https://github.com/scikit-hep/awkward-1.0/blob/main/LICENSE
+
+#ifndef AWKWARD_BUILDEROPTIONS_H_
+#define AWKWARD_BUILDEROPTIONS_H_
+
+#include <cassert>
+#include <cstring>
+#include <tuple>
+#include <type_traits>
+#include <vector>
+#include <stdint.h>
+
+namespace awkward {
+
+  /// @class Options
+  ///
+  /// @brief Container for all configuration options needed by ArrayBuilder,
+  /// GrowableBuffer, LayoutBuilder and the Builder subclasses.
+  template <typename... OPTIONS>
+  struct Options {
+    static constexpr std::size_t value = sizeof...(OPTIONS);
+
+    using OptionsPack = typename std::tuple<OPTIONS...>;
+
+    // FIXME:
+    // std::tuple_element_t is missing on some of the CI node compilers
+    //
+    // template<std::size_t INDEX>
+    // using OptionType = std::tuple_element_t<INDEX, OptionsPack>;
+
+    template <std::size_t INDEX>
+    using OptionType =
+        typename std::tuple_element<INDEX, decltype(OptionsPack())>::type;
+
+    /// @brief Creates an Options tuple from a full set of parameters.
+    Options(OPTIONS... options) : pars(options...) {}
+
+    /// @brief The initial number of
+    /// {@link GrowableBuffer#reserved reserved} entries for a GrowableBuffer.
+    int64_t
+    initial() const noexcept {
+      return option<0>();
+    }
+
+    /// @brief The factor with which a GrowableBuffer is resized
+    /// when its {@link GrowableBuffer#length length} reaches its
+    /// {@link GrowableBuffer#reserved reserved}.
+    double
+    resize() const noexcept {
+      return option<1>();
+    }
+
+    /// @brief Access to all other options.
+    template <std::size_t INDEX>
+    const OptionType<INDEX>&
+    option() const noexcept {
+      return std::get<INDEX>(pars);
+    }
+
+    OptionsPack pars;
+  };
+
+  using BuilderOptions = Options<int64_t, double>;
+}  // namespace awkward
+
+#endif  // AWKWARD_BUILDEROPTIONS_H_