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