Add LinearBufferTemplate: template class for fixed-size linear buffers

Fw/Types/LinearBufferTemplate.hpp

@@ -0,0 +1,72 @@
+// ======================================================================
+// @file   LinearBufferTemplate.hpp
+// @author Devin (from nasa/fprime#5018)
+// @brief  A linear buffer template parameterized by type ID and size
+// ======================================================================
+
+#ifndef FW_LINEAR_BUFFER_TEMPLATE_HPP
+#define FW_LINEAR_BUFFER_TEMPLATE_HPP
+
+#include <Fw/FPrimeBasicTypes.hpp>
+#include <Fw/Types/Assert.hpp>
+#include <Fw/Types/Serializable.hpp>
+
+namespace Fw {
+
+//! \brief A linear buffer template parameterized by type ID and buffer size
+//!
+//! This class template provides a fixed-size linear serialization buffer
+//! derived from LinearBufferBase. It replaces the many hand-coded concrete
+//! buffer classes (CmdArgBuffer, LogBuffer, TlmBuffer, etc.) that share
+//! identical structure, eliminating boilerplate and reducing error potential.
+//!
+//! Example: using CmdArgBuffer = LinearBufferTemplate<FW_TYPEID_CMD_BUFF, FW_CMD_ARG_BUFFER_MAX_SIZE>;
+//!
+//! \tparam TypeId   Serialized type identifier (from SerIds.hpp or project-specific)
+//! \tparam MaxSize  Maximum buffer capacity in bytes
+template <int TypeId, FwSizeType MaxSize>
+class LinearBufferTemplate final : public LinearBufferBase {
+  public:
+    enum {
+        SERIALIZED_TYPE_ID = TypeId,                        //!< type id for serialization
+        SERIALIZED_SIZE = STATIC_SERIALIZED_SIZE(MaxSize),  //!< size when serialized: buffer + stored size
+    };
+
+    LinearBufferTemplate() = default;
+
+    LinearBufferTemplate(const U8* args, FwSizeType size) {
+        const SerializeStatus stat = this->setBuff(args, size);
+        FW_ASSERT(FW_SERIALIZE_OK == stat, static_cast<FwAssertArgType>(stat));
+    }
+
+    LinearBufferTemplate(const LinearBufferTemplate& other) : LinearBufferBase() {
+        const SerializeStatus stat = this->setBuff(other.getBuffAddr(), other.getSize());
+        FW_ASSERT(FW_SERIALIZE_OK == stat, static_cast<FwAssertArgType>(stat));
+    }
+
+    ~LinearBufferTemplate() override = default;
+
+    LinearBufferTemplate& operator=(const LinearBufferTemplate& other) {
+        if (this == &other) {
+            return *this;
+        }
+        const SerializeStatus stat = this->setBuff(other.getBuffAddr(), other.getSize());
+        FW_ASSERT(FW_SERIALIZE_OK == stat, static_cast<FwAssertArgType>(stat));
+        return *this;
+    }
+
+    DEPRECATED(FwSizeType getBuffCapacity() const, "Use getCapacity() instead") { return this->getCapacity(); }
+
+    FwSizeType getCapacity() const override { return sizeof this->m_bufferData; }
+
+    U8* getBuffAddr() override { return this->m_bufferData; }
+
+    const U8* getBuffAddr() const override { return this->m_bufferData; }
+
+  private:
+    U8 m_bufferData[MaxSize];
+};
+
+}  // namespace Fw
+
+#endif