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refactor: split throw_bad_cast from value::cast

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ToruNiina
2019-05-29 20:53:49 +09:00
parent 74da49f87f
commit 0ce259ada0
1 changed files with 13 additions and 15 deletions
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28
toml/value.hpp
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@@ -744,6 +744,16 @@ void change_region(value& v, Region&& reg)
return; return;
} }
template<value_t Expected>
[[noreturn]] inline void throw_bad_cast(value_t actual, const ::toml::value& v)
{
throw type_error(detail::format_underline(concat_to_string(
"[error] toml::value bad_cast to ", Expected), {
{std::addressof(get_region(v)),
concat_to_string("the actual type is ", actual)}
}));
}
template<value_t T> template<value_t T>
struct switch_cast; struct switch_cast;
template<> template<>
@@ -823,11 +833,7 @@ typename detail::toml_default_type<T>::type& value::cast() &
{ {
if(T != this->type_) if(T != this->type_)
{ {
throw type_error(detail::format_underline(concat_to_string( detail::throw_bad_cast<T>(this->type_, *this);
"[error] toml::value bad_cast to ", T), {
{this->region_info_.get(),
concat_to_string("the actual type is ", this->type_)}
}));
} }
return detail::switch_cast<T>::invoke(*this); return detail::switch_cast<T>::invoke(*this);
} }
@@ -836,11 +842,7 @@ typename detail::toml_default_type<T>::type const& value::cast() const&
{ {
if(T != this->type_) if(T != this->type_)
{ {
throw type_error(detail::format_underline(concat_to_string( detail::throw_bad_cast<T>(this->type_, *this);
"[error] toml::value bad_cast to ", T), {
{this->region_info_.get(),
concat_to_string("the actual type is ", this->type_)}
}));
} }
return detail::switch_cast<T>::invoke(*this); return detail::switch_cast<T>::invoke(*this);
} }
@@ -849,11 +851,7 @@ typename detail::toml_default_type<T>::type&& value::cast() &&
{ {
if(T != this->type_) if(T != this->type_)
{ {
throw type_error(detail::format_underline(concat_to_string( detail::throw_bad_cast<T>(this->type_, *this);
"[error] toml::value bad_cast to ", T), {
{this->region_info_.get(),
concat_to_string("the actual type is ", this->type_)}
}));
} }
return detail::switch_cast<T>::invoke(std::move(*this)); return detail::switch_cast<T>::invoke(std::move(*this));
} }