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#ifndef EOLIAN_MONO_MARSHALL_TYPE_HH
#define EOLIAN_MONO_MARSHALL_TYPE_HH
#include "grammar/generator.hpp"
#include "grammar/klass_def.hpp"
#include "grammar/case.hpp"
namespace eolian_mono {
namespace attributes = efl::eolian::grammar::attributes;
namespace detail {
template <typename OutputIterator, typename Context>
struct marshall_type_visitor_generate;
template <typename OutputIterator, typename Context>
struct marshall_annotation_visitor_generate;
}
/*
* Converts a given type/parameter to the type used in the DllImport signatures.
*
* For example, Eina.Value can be marshaled either as an eina.Value instance through
* CustomMarshallers if we have a ptr(Eina.Value) or through the intermediate
* eina.ValueNative blittable struct if it is passed by value.
*
* For details, check marshall_type_impl.h with the actual conversion rules.
*/
struct marshall_type_generator
{
marshall_type_generator(bool is_return = false, bool is_special_subtype = false)
: is_return(is_return)
, is_special_subtype(is_special_subtype)
{}
template <typename OutputIterator, typename Context>
bool generate(OutputIterator sink, attributes::type_def const& type, Context const& context) const
{
return type.original_type.visit(detail::marshall_type_visitor_generate<OutputIterator, Context>{
sink
, &context
, type.c_type
, false
, is_return
, type.is_ptr
, is_special_subtype
});
}
/* Some types may require a different conversion when they are in @out parameters. */
template <typename OutputIterator, typename Context>
bool generate(OutputIterator sink, attributes::parameter_def const& param, Context const& context) const
{
return param.type.original_type.visit(detail::marshall_type_visitor_generate<OutputIterator, Context>{
sink
, &context
, param.type.c_type
, param.direction != attributes::parameter_direction::in
, false
, param.type.is_ptr
, is_special_subtype
});
}
bool is_return;
bool is_special_subtype;
};
/*
* Generates the "[MarshalAs(...)]" rules for the given type.
*
* For example, the CustomMarshallers definitions for String and eina.Values and the
* boolean size defintion (Eina_Value is 1 byte, while C# bool has 4 bytes).
*/
struct marshall_annotation_generator
{
marshall_annotation_generator(bool is_return = false)
: is_return(is_return) {}
template <typename OutputIterator, typename Context>
bool generate(OutputIterator sink, attributes::type_def const& type, Context const& context) const
{
return type.original_type.visit(detail::marshall_annotation_visitor_generate<OutputIterator, Context>{sink, &context, type.c_type, false, is_return, type.is_ptr});
}
template <typename OutputIterator, typename Context>
bool generate(OutputIterator sink, attributes::parameter_def const& param, Context const& context) const
{
return param.type.original_type.visit(detail::marshall_annotation_visitor_generate<OutputIterator, Context>{sink, &context, param.type.c_type
, param.direction != attributes::parameter_direction::in, false, param.type.is_ptr});
}
bool is_return;
};
struct marshall_type_terminal
{
marshall_type_generator const operator()(bool is_return, bool is_special_subtype = false) const
{
return marshall_type_generator(is_return, is_special_subtype);
}
} const marshall_type = {};
marshall_type_generator const as_generator(marshall_type_terminal)
{
return marshall_type_generator{};
}
struct marshall_annotation_terminal
{
marshall_annotation_generator const operator()(bool is_return) const
{
return marshall_annotation_generator(is_return);
}
} const marshall_annotation = {};
marshall_annotation_generator const as_generator(marshall_annotation_terminal)
{
return marshall_annotation_generator{};
}
}
namespace efl { namespace eolian { namespace grammar {
template <>
struct is_eager_generator< ::eolian_mono::marshall_type_generator> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::marshall_type_generator> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::marshall_type_terminal> : std::true_type {};
namespace type_traits {
template <>
struct attributes_needed< ::eolian_mono::marshall_type_generator> : std::integral_constant<int, 1> {};
template <>
struct attributes_needed< ::eolian_mono::marshall_type_terminal> : std::integral_constant<int, 1> {};
}
template <>
struct is_eager_generator< ::eolian_mono::marshall_annotation_generator> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::marshall_annotation_generator> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::marshall_annotation_terminal> : std::true_type {};
namespace type_traits {
template <>
struct attributes_needed< ::eolian_mono::marshall_annotation_generator> : std::integral_constant<int, 1> {};
template <>
struct attributes_needed< ::eolian_mono::marshall_annotation_terminal> : std::integral_constant<int, 1> {};
}
} } }
#endif
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