Added Pop operator to handle sequences

include/aidge/operator/Pop.hpp

+/********************************************************************************
+ * Copyright (c) 2023 CEA-List
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ ********************************************************************************/
+
+#ifndef AIDGE_CORE_OPERATOR_POP_H_
+#define AIDGE_CORE_OPERATOR_POP_H_
+
+#include <cassert>
+#include <memory>
+#include <vector>
+
+#include "aidge/utils/Registrar.hpp"
+#include "aidge/operator/OperatorTensor.hpp"
+#include "aidge/backend/OperatorImpl.hpp"
+#include "aidge/data/Tensor.hpp"
+#include "aidge/graph/Node.hpp"
+#include "aidge/utils/Types.h"
+#include "aidge/utils/StaticAttributes.hpp"
+
+namespace Aidge {
+enum class PopAttr { ForwardStep };
+
+class Pop_Op : public OperatorTensor,
+    public Registrable<Pop_Op, std::string, std::unique_ptr<OperatorImpl>(const Pop_Op&)>,
+    public StaticAttributes<PopAttr, unsigned int> {
+public:
+    static const std::string Type;
+
+    using Attributes_ = StaticAttributes<PopAttr, unsigned int>;
+    template <PopAttr e>
+    using attr = typename Attributes_::template attr<e>;
+
+    Pop_Op()
+        : OperatorTensor(Type, 1, 0, 1),
+          Attributes_(attr<PopAttr::ForwardStep>(0))
+    {
+        
+    }
+
+    /**
+     * @brief Copy-constructor. Copy the operator attributes and its output tensor(s), but not its input tensors (the new operator has no input associated).
+     * @param op Operator to copy.
+     */
+    Pop_Op(const Pop_Op& op)
+        : OperatorTensor(op),
+          Attributes_(op)
+    {
+        mImpl = op.mImpl ? Registrar<Pop_Op>::create(op.mOutputs[0]->getImpl()->backend())(*this) : nullptr;
+    }
+
+    /**
+     * @brief Clone the operator using its copy-constructor.
+     * @see Operator::Pop_Op
+     */
+    std::shared_ptr<Operator> clone() const override {
+        return std::make_shared<Pop_Op>(*this);
+    }
+
+    void setBackend(const std::string& name, DeviceIdx_t device = 0) override {
+        mImpl = Registrar<Pop_Op>::create({name})(*this);
+        mOutputs[0]->setBackend(name, device);
+    }
+
+    void computeOutputDims() override final;
+    void updateConsummerProducer() override;
+    void forward() override;
+
+    static const std::vector<std::string> getInputsName(){
+        return {"data_input"};
+    }
+    static const std::vector<std::string> getOutputsName(){
+        return {"data_output"};
+    }
+};
+
+inline std::shared_ptr<Node> Pop(const std::string& name = "") {
+    return std::make_shared<Node>(std::make_shared<Pop_Op>(), name);
+}
+}  // namespace Aidge
+
+namespace {
+template <>
+const char *const EnumStrings<Aidge::PopAttr>::data[] = {
+    "ForwardStep"
+};
+}
+
+#endif /* AIDGE_CORE_OPERATOR_POP_H_ */
\ No newline at end of file

src/operator/Pop.cpp

+/********************************************************************************
+ * Copyright (c) 2023 CEA-List
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ ********************************************************************************/
+
+#include <string>
+
+#include "aidge/operator/Pop.hpp"
+
+const std::string Aidge::Pop_Op::Type = "Pop";
+
+void Aidge::Pop_Op::computeOutputDims() {
+    // check inputs have been associated
+    if (!getInput(0)) {
+        AIDGE_THROW_OR_ABORT(std::runtime_error, "{}: input #0 should be associated with a Tensor", type());
+    }
+    if (!(getInput(0)->empty())) {
+        auto inputDims = getInput(0)->dims();
+        inputDims.erase(inputDims.begin());
+        getOutput(0)->resize(inputDims);
+    }
+}
+
+void Aidge::Pop_Op::updateConsummerProducer() {
+    Operator::updateConsummerProducer();
+    this->template getAttr<PopAttr::ForwardStep>() = 0;
+}
+
+void Aidge::Pop_Op::forward() {
+    Operator::forward();
+    ++this->template getAttr<PopAttr::ForwardStep>();
+}