Method get_arr

subprojects/llama.cpp/src/llama-model-loader.cpp:292–330

    template<typename T>
    bool llama_model_loader::get_arr(const std::string & key, std::vector<T> & result, bool required) {
        const gguf_context * ctx = meta.get();
        const int kid = gguf_find_key(ctx, key.c_str());

        if (kid < 0 || gguf_get_kv_type(ctx, kid) != GGUF_TYPE_ARRAY) {
            if (required) {
                throw std::runtime_error(format("array key not found in model: %s", key.c_str()));
            }
            return false;
        }

        struct GGUFMeta::ArrayInfo arr_info =
            GGUFMeta::GKV<GGUFMeta::ArrayInfo>::get_kv(ctx, kid);

        switch (arr_info.gt) {
            case GGUF_TYPE_UINT32:
            case GGUF_TYPE_INT32:   GGML_ASSERT((std::is_same<T,     int32_t>::value) ||
                                                (std::is_same<T,    uint32_t>::value)); break;
            case GGUF_TYPE_FLOAT32: GGML_ASSERT((std::is_same<T,       float>::value)); break;
            case GGUF_TYPE_STRING:  GGML_ASSERT((std::is_same<T, std::string>::value)); break;
            default:
                throw std::runtime_error(format("%s is not a string/float32/uint32/int32 array", key.c_str()));
        }

        if constexpr (std::is_same<T, std::string>::value) {
            const size_t n_items = gguf_get_arr_n(ctx, kid);
            result.clear();

            for (size_t i = 0; i < n_items; i++) {
                const T value = gguf_get_arr_str(ctx, kid, i);
                result.emplace_back(value);
            }
        } else {
            result.resize(arr_info.length);
            result.assign((const T*)arr_info.data, (const T *)arr_info.data + arr_info.length);
        }

        return true;
    }

    template<typename T, size_t N_MAX>
    bool llama_model_loader::get_arr(const std::string & key, std::array<T, N_MAX> & result, bool required) {