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59 lines
1.6 KiB
59 lines
1.6 KiB
#pragma once
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#include <memory>
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#include <string>
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#include <variant>
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#include <vector>
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#include <optional>
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namespace scripting {
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struct null {};
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struct array;
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using script_value = std::variant<null, int32_t, std::string, array>;
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struct script_variable {
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std::string name;
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};
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struct code_location {
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std::shared_ptr<const std::string> line_contents;
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int32_t line_number;
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int32_t column_number;
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};
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struct script_error {
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std::shared_ptr<const code_location> location;
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std::string message;
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};
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struct array {
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std::vector<script_value> value;
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operator std::vector<script_value>&() {
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return value;
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}
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};
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using argument = std::variant<script_value, script_variable>;
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class UserScript;
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struct function_impl {
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virtual std::optional<script_value> apply(UserScript* self, std::vector<argument>, std::optional<script_error>&) = 0;
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virtual ~function_impl() = default;
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};
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using function = std::unique_ptr<function_impl>;
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class UserScript {
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public:
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virtual std::optional<std::reference_wrapper<script_value>> getValue(const std::string& name) = 0;
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virtual bool setValue(const std::string& name, script_value value) = 0;
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virtual void registerFunction(std::string name, function fn) = 0;
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virtual script_value resolve(const std::string& name) = 0;
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virtual std::variant<script_value, std::vector<script_error>> executeAtOnce(std::string code) = 0;
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virtual std::vector<script_error> prepare(std::string code) = 0;
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virtual std::optional<script_error> stepOnce() = 0;
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virtual ~UserScript() = default;
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};
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std::unique_ptr<UserScript> prepare_interpreter(const std::string& code);
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}
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