fcb8d040e8
Instead of lengthy blurbs, switch to single-line, machine-readable standardized (https://spdx.dev) license identifiers. The Linux kernel switched long ago, so there is strong precedent. Three cases are handled: AGPL-only, Apache-only, and dual licensed. For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0), reasoning that our changes are extensive enough to apply our license. The changes we applied mechanically with a script, except to licenses/README.md. Closes #9937
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/*
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* Copyright (C) 2019-present ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include "abstract_function.hh"
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#include "scalar_function.hh"
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#include "lang/lua.hh"
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#include "lang/wasm.hh"
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namespace cql3 {
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namespace functions {
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class user_function final : public abstract_function, public scalar_function {
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public:
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struct lua_context {
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sstring bitcode;
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// FIXME: We should not need a copy in each function. It is here
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// because user_function::execute is only passed the
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// cql_serialization_format and the runtime arguments. We could
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// avoid it by having a runtime->execute(user_function) instead,
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// but that is a large refactoring. We could also store a
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// lua_runtime in a thread_local variable, but that is one extra
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// global.
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lua::runtime_config cfg;
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};
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using context = std::variant<lua_context, wasm::context>;
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private:
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std::vector<sstring> _arg_names;
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sstring _body;
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sstring _language;
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bool _called_on_null_input;
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context _ctx;
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public:
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user_function(function_name name, std::vector<data_type> arg_types, std::vector<sstring> arg_names, sstring body,
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sstring language, data_type return_type, bool called_on_null_input, context ctx);
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const std::vector<sstring>& arg_names() const { return _arg_names; }
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const sstring& body() const { return _body; }
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const sstring& language() const { return _language; }
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bool called_on_null_input() const { return _called_on_null_input; }
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virtual bool is_pure() const override;
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virtual bool is_native() const override;
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virtual bool is_aggregate() const override;
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virtual bool requires_thread() const override;
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virtual bytes_opt execute(cql_serialization_format sf, const std::vector<bytes_opt>& parameters) override;
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};
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}
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}
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