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PorygonLang/src/StandardLibraries/BasicLibrary.hpp
Deukhoofd 24c560b52d
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Initial work on standard library
2019-06-29 16:18:59 +02:00

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#ifndef PORYGONLANG_BASICLIBRARY_HPP
#define PORYGONLANG_BASICLIBRARY_HPP
#include <string>
#include <map>
#include "../Evaluator/EvaluationException.hpp"
#include "../Evaluator/EvalValues/EvalValue.hpp"
#include "../Evaluator/EvalValues/NilEvalValue.hpp"
#include "../Utilities/StringUtils.hpp"
#include "../Binder/BoundVariables/BoundVariable.hpp"
#include "../UserData/UserDataFunction.hpp"
#include "../UserData/UserDataFunctionType.hpp"
namespace Porygon::StandardLibraries{
class BasicLibrary{
static Evaluation::EvalValue* _error(void*, Evaluation::EvalValue* parameters[], int parameterCount){
auto message = parameters[0]->EvaluateString();
auto conv = Utilities::StringUtils::FromUTF8(message);
throw Evaluation::EvaluationException(conv);
}
static Evaluation::EvalValue* _assert(void*, Evaluation::EvalValue* parameters[], int parameterCount){
auto assertion = parameters[0]->EvaluateBool();
if (!assertion){
throw Evaluation::EvaluationException("assertion failed!");
}
return new Evaluation::BooleanEvalValue(true);
}
public:
static void RegisterVariables(std::map<Utilities::HashedString, Binder::BoundVariable *>* bound,
std::map<Utilities::HashedString, shared_ptr<Evaluation::EvalValue>>* values){
// Register error function
auto errorFuncType = make_shared<UserData::UserDataFunctionType>(
make_shared<ScriptType>(TypeClass::Nil),
vector<shared_ptr<ScriptType>>{make_shared<StringScriptType>(false, 0)});
auto errorFunc = make_shared<UserData::UserDataFunction>(_error, nullptr);
auto errorLookup = Utilities::HashedString::CreateLookup(u"error");
bound->insert({errorLookup, new Binder::BoundVariable(errorFuncType)});
values->insert({errorLookup, errorFunc});
// Register assert function
auto assertFuncType = make_shared<UserData::UserDataFunctionType>(
make_shared<ScriptType>(TypeClass::Bool),
vector<shared_ptr<ScriptType>>{make_shared<ScriptType>(TypeClass::Bool)});
auto assertFunc = make_shared<UserData::UserDataFunction>(_assert, nullptr);
auto assertLookup = Utilities::HashedString::CreateLookup(u"assert");
bound->insert({assertLookup, new Binder::BoundVariable(assertFuncType)});
values->insert({assertLookup, assertFunc});
}
};
}
#endif //PORYGONLANG_BASICLIBRARY_HPP