initial commitHEADmaster

1 files changed, 67 insertions, 0 deletions

diff --git a/utilities.hpp b/utilities.hpp
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index 0000000..819c170
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+++ b/utilities.hpp
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+#ifndef THROTTLE_QUADRANT_UTILITIES_HPP
+#define THROTTLE_QUADRANT_UTILITIES_HPP
+
+#include <Arduino.h>
+
+void* operator new(size_t size, void* ptr);
+
+namespace tq {
+
+template<typename ValueType>
+struct optional {
+
+  optional()
+    : m_engaged{ false } {
+  }
+
+  optional(optional const& other)
+    : m_engaged{ other.has_value() } {
+    if (m_engaged) {
+      construct_from(other.value());
+    }
+  }
+
+  explicit optional(ValueType const& value)
+    : m_engaged{ true } {
+    construct_from(value);
+  }
+
+  ~optional() {
+    destroy();
+  }
+
+  auto operator=(optional const& other) -> optional& {
+    destroy();
+    m_engaged = other.m_engaged;
+    if (m_engaged) {
+      construct_from(other.value());
+    }
+  }
+
+  auto has_value() const -> bool {
+    return m_engaged;
+  }
+
+  auto value() const -> ValueType const& {
+    return *(reinterpret_cast<ValueType const*>(m_storage));
+  }
+
+private:
+  auto construct_from(ValueType const& value) -> void {
+    new (static_cast<byte*>(m_storage)) ValueType{ value };
+  }
+
+  auto destroy() -> void {
+    if (has_value()) {
+      (reinterpret_cast<ValueType const*>(m_storage))->~ValueType();
+    }
+  }
+
+  alignas(ValueType) byte m_storage[sizeof(ValueType)];
+  bool m_engaged;
+};
+
+
+}
+
+#endif
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