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csharp: Add context information about marshaling direction 

This will be used to differentiate annotations between calls from C# to
C functions (DllImport-like) and delegates C# gives to C to be called
back (virtual methods and callbacks).

By default, the root context assumes the managed code calling the native
code.
This commit is contained in:
Lauro Moura 2019-12-10 18:18:45 -03:00
parent 9472ec86ec
commit 590cd74906
3 changed files with 37 additions and 2 deletions
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4
src/bin/eolian_mono/eolian/mono/function_definition.hh
View File

@ -54,6 +54,8 @@ struct native_function_definition_generator
auto const& indent = current_indentation(context);
auto native_to_managed_context = marshall_direction::from_native_to_managed(context);
// Delegate for the C# method we will export to EO as a method implementation.
if(!as_generator
(
@ -69,7 +71,7 @@ struct native_function_definition_generator
(marshall_annotation << " " << marshall_parameter)
) % ", ")
<< ");\n\n")
.generate(sink, std::make_tuple(f.return_type, f.return_type, f.c_name, f.parameters), context))
.generate(sink, std::make_tuple(f.return_type, f.return_type, f.c_name, f.parameters), native_to_managed_context))
return false;
// API delegate is the wrapper for the Eo methods exported from C that we will use from C#.

32
src/bin/eolian_mono/eolian/mono/generation_contexts.hh
View File

@ -50,6 +50,38 @@ struct class_context
{}
};
struct marshall_direction
{
enum direction {
managed_to_native, // Used for DllImport'd methods
native_to_managed, // Used for delegates of functions passed to C to be called back
};
direction current_dir;
constexpr marshall_direction(direction direction)
: current_dir(direction)
{}
template<typename Context>
static inline constexpr Context from_native_to_managed(Context const& context)
{
return efl::eolian::grammar::context_replace_tag(marshall_direction(marshall_direction::native_to_managed), context);
}
template<typename Context>
static inline constexpr Context from_managed_to_native(Context const& context)
{
return efl::eolian::grammar::context_replace_tag(marshall_direction(marshall_direction::managed_to_native), context);
}
template<typename Context>
static inline constexpr marshall_direction::direction current_direction(Context const& context)
{
return efl::eolian::grammar::context_find_tag<marshall_direction>(context).current_dir;
}
};
struct indentation_context
{
constexpr indentation_context(indentation_context const& other) = default;

3
src/bin/eolian_mono/eolian_mono.cc
View File

@ -181,6 +181,7 @@ run(options_type const& opts)
using efl::eolian::grammar::context_add_tag;
auto context = context_add_tag(eolian_mono::indentation_context{0},
context_add_tag(eolian_mono::marshall_direction{eolian_mono::marshall_direction::managed_to_native},
context_add_tag(eolian_mono::eolian_state_context{opts.state},
context_add_tag(eolian_mono::options_context{opts.want_beta,
opts.examples_dir},
@ -188,7 +189,7 @@ run(options_type const& opts)
opts.v_major,
opts.v_minor,
opts.references_map},
efl::eolian::grammar::context_null()))));
efl::eolian::grammar::context_null())))));
EINA_ITERATOR_FOREACH(aliases, tp)
{