PyScriptHandle.hpp

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// -------------------------------------------------------//
//
// SHAMROCK code for hydrodynamics
// Copyright (c) 2021-2026 Timothée David--Cléris <tim.shamrock@proton.me>
// SPDX-License-Identifier: CeCILL Free Software License Agreement v2.1
// Shamrock is licensed under the CeCILL 2.1 License, see LICENSE for more information
//
// -------------------------------------------------------//
 
#pragma once
 
#include "shambindings/pytypealias.hpp"
#include "shamsys/legacy/log.hpp"
#include <pybind11/embed.h>
#include <pybind11/eval.h>
#include <pybind11/pybind11.h>
 
struct PyScriptHandle {
 
    pybind11::dict locals;
 
    PyScriptHandle() { std::make_unique<pybind11::dict>(); }
 
    pybind11::dict &data() { return locals; }
 
    template<class T>
    inline void register_array(std::string name, std::vector<T> &arr) {
        data()[name.c_str()] = arr;
    }
 
    template<class T>
    inline void register_value(std::string name, T val) {
        data()[name.c_str()] = val;
    }
 
    template<size_t N>
    inline bool exec(const char (&expr)[N], pybind11::object &&global = pybind11::globals()) {
        try {
            py::exec(expr, std::forward<pybind11::object>(global), locals);
        } catch (const std::exception &e) {
            logger::warn_ln("PyScriptHandle", "the script throwed an error :", e.what());
            return false;
        }
        return true;
    }
};