// VariableHelpersModule.hpp
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#ifndef MODULES_VARIABLEHELPERSMODULE_HPP
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#define MODULES_VARIABLEHELPERSMODULE_HPP
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#include <stdexcept>
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#include <string>
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#include <vector>
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#include "Modules/BaseModule.hpp"
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#include "Modules/ModuleManager.hpp"
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#include "Symbols/Value.hpp"
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#include "Symbols/VariableTypes.hpp"
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namespace Modules {
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/**
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* @brief Module providing helper functions for variables.
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* Currently supports:
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* typeof($var) -> returns string name of type
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* typeof($var, "int") -> returns bool if type matches
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*/
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class VariableHelpersModule : public BaseModule {
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public:
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void registerModule() override {
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auto & mgr = ModuleManager::instance();
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mgr.registerFunction("typeof", [](const std::vector<Symbols::Value> & args) {
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using namespace Symbols;
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if (args.size() == 1) {
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auto t = args[0].getType();
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return Value(Variables::TypeToString(t));
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}
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if (args.size() == 2) {
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auto t = args[0].getType();
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std::string name = Variables::TypeToString(t);
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if (args[1].getType() != Variables::Type::STRING) {
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throw std::runtime_error("Second argument to typeof must be string");
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}
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bool match = (name == args[1].get<std::string>());
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return Value(match);
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}
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throw std::runtime_error("typeof expects 1 or 2 arguments");
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});
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}
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};
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} // namespace Modules
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#endif // MODULES_VARIABLEHELPERSMODULE_HPP
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