Deukhoofd/PorygonLang
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Support for explicit casting
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Deukhoofd
2019-08-18 14:32:14 +02:00
parent 1d72e2eccd
commit e939920e5c
8 changed files with 173 additions and 105 deletions
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5
src/ScriptTypes/CastResult.hpp
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@@ -3,8 +3,9 @@
namespace Porygon{
enum class CastResult{
Success,
Failure,
ValidCast,
InvalidCast,
UncheckedCast,
DataLoss,
};
}

6
src/ScriptTypes/FunctionScriptType.hpp
View File

@@ -47,15 +47,15 @@ namespace Porygon {
const auto& parameterType = parameter->GetType();
if (parameterType->operator!=(_parameterTypes[i].get())){
auto castResult = parameterType->CastableTo(_parameterTypes[i], false);
if (castResult == CastResult::Failure){
if (castResult == CastResult::InvalidCast){
return false;
}
else{
if (castResult == CastResult::DataLoss){
diagnostics->LogWarning(Diagnostics::DiagnosticCode::DataLossOnImplicitCast, parameter->GetStartPosition(),
diagnostics->LogWarning(Diagnostics::DiagnosticCode::DataLossOnCast, parameter->GetStartPosition(),
parameter->GetLength());
}
parameters->at(i) = new Binder::BoundImplicitCastExpression(parameter, _parameterTypes[i]);
parameters->at(i) = new Binder::BoundCastExpression(parameter, _parameterTypes[i]);
}
}
}

10
src/ScriptTypes/ScriptType.hpp
View File

@@ -77,7 +77,9 @@ namespace Porygon{
}
[[nodiscard]] virtual CastResult CastableTo(const shared_ptr<const ScriptType>& castType, bool explicitCast) const{
return CastResult::Failure;
if (explicitCast)
return CastResult::InvalidCast;
return CastResult::InvalidCast;
}
};
@@ -120,12 +122,12 @@ namespace Porygon{
[[nodiscard]] CastResult CastableTo(const shared_ptr<const ScriptType>& castType, bool explicitCast) const final{
if (!explicitCast){
if (castType->GetClass() != TypeClass::Number )
return CastResult::Failure;
return CastResult::InvalidCast;
auto bNum = dynamic_pointer_cast<const NumericScriptType>(castType);
if (bNum->IsFloat() && !IsFloat()) return CastResult::Success;
if (bNum->IsFloat() && !IsFloat()) return CastResult::ValidCast;
if (!bNum->IsFloat() && IsFloat()) return CastResult::DataLoss;
}
return CastResult::Success;
return ScriptType::CastableTo(castType, explicitCast);
}
};