feat: add lab-rv32i-freertos-vector-raii card

include/freertos/vector_v1.hpp

@@ -0,0 +1,97 @@
+#ifndef FREERTOS_CPP_VECTOR_V1_HPP
+#define FREERTOS_CPP_VECTOR_V1_HPP
+
+#include <stddef.h>
+
+namespace freertos
+{
+
+/*
+ * VectorV1 deliberately owns exactly one allocation.  It is small enough to
+ * expose the Rule of Five without hiding the transfer behind a hosted STL
+ * container.  Bounds checking and growth belong to later container lessons.
+ */
+class VectorV1 final
+{
+public:
+    explicit VectorV1( size_t size )
+        : elements_ { size != 0U ? new double[ size ] : nullptr },
+          size_ { size }
+    {
+    }
+
+    ~VectorV1() noexcept
+    {
+        release();
+    }
+
+    VectorV1( const VectorV1 & ) = delete;
+    VectorV1 & operator=( const VectorV1 & ) = delete;
+
+    VectorV1( VectorV1 && other ) noexcept
+        : elements_ { other.elements_ }, size_ { other.size_ }
+    {
+        other.elements_ = nullptr;
+        other.size_ = 0U;
+    }
+
+    VectorV1 & operator=( VectorV1 && other ) noexcept
+    {
+        if( this != &other )
+        {
+            /* Release the old destination before taking the source buffer. */
+            release();
+            elements_ = other.elements_;
+            size_ = other.size_;
+            other.elements_ = nullptr;
+            other.size_ = 0U;
+        }
+        return *this;
+    }
+
+    double & operator[]( size_t index ) noexcept
+    {
+        return elements_[ index ];
+    }
+
+    const double & operator[]( size_t index ) const noexcept
+    {
+        return elements_[ index ];
+    }
+
+    double * data() noexcept
+    {
+        return elements_;
+    }
+
+    const double * data() const noexcept
+    {
+        return elements_;
+    }
+
+    size_t size() const noexcept
+    {
+        return size_;
+    }
+
+    bool empty() const noexcept
+    {
+        return size_ == 0U;
+    }
+
+private:
+    void release() noexcept
+    {
+        delete[] elements_;
+        elements_ = nullptr;
+        size_ = 0U;
+    }
+
+    double * elements_;
+    size_t size_;
+};
+
+} // namespace freertos
+
+#endif
+