forked from enlightenment/efl
607 lines
25 KiB
C++
607 lines
25 KiB
C++
/*
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* Copyright 2019 by its authors. See AUTHORS.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef EOLIAN_MONO_EVENTS_HH
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#define EOLIAN_MONO_EVENTS_HH
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#include <iterator>
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#include <Eina.hh>
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#include "grammar/generator.hpp"
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#include "grammar/klass_def.hpp"
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#include "type_match.hh"
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#include "name_helpers.hh"
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#include "using_decl.hh"
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namespace eolian_mono {
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namespace eina = efl::eina;
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template<typename OutputIterator, typename Context>
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struct unpack_event_args_visitor
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{
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mutable OutputIterator sink;
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Context const* context;
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attributes::type_def const& type;
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typedef unpack_event_args_visitor<OutputIterator, Context> visitor_type;
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typedef bool result_type;
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bool operator()(grammar::attributes::regular_type_def const& regular) const
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{
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std::string const& arg = "info";
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std::string arg_type = name_helpers::type_full_managed_name(regular);
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if (regular.is_struct())
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{
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// Structs are usually passed by pointer to events, like having a ptr<> modifier
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// Uses implicit conversion from IntPtr
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return as_generator(
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" info"
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).generate(sink, attributes::unused, *context);
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}
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else if (type.is_ptr)
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{
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return as_generator("(" + arg_type + ")Marshal.PtrToStructure(" + arg + ", typeof(" + arg_type + "))")
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.generate(sink, attributes::unused, *context);
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}
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using attributes::regular_type_def;
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struct match
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{
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eina::optional<std::string> name;
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std::function<std::string()> function;
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}
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/// Sizes taken from https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/sizeof
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const match_table [] =
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{
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{"bool", [&arg] { return "Marshal.ReadByte(" + arg + ") != 0"; }}
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, {"ubyte", [&arg] { return "Marshal.ReadByte(" + arg + ")"; }}
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, {"byte", [&arg] { return "(sbyte) Marshal.ReadByte(" + arg + ")"; }}
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, {"char", [&arg] { return "(char) Marshal.ReadByte(" + arg + ")"; }}
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, {"short", [&arg] { return "Marshal.ReadInt16(" + arg + ")"; }}
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, {"ushort", [&arg] { return "(ushort) Marshal.ReadInt16(" + arg + ")"; }}
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, {"int", [&arg] { return "Marshal.ReadInt32(" + arg + ")"; }}
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, {"uint", [&arg] { return "(uint) Marshal.ReadInt32(" + arg + ")"; }}
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, {"long", [&arg] { return "Marshal.ReadInt64(" + arg + ")"; }}
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, {"ulong", [&arg] { return "(ulong) Marshal.ReadInt64(" + arg + ")"; }}
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, {"llong", [&arg] { return "(long) Marshal.ReadInt64(" + arg + ")"; }}
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, {"ullong", [&arg] { return "(ulong) Marshal.ReadInt64(" + arg + ")"; }}
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, {"int8", [&arg] { return "(sbyte)Marshal.ReadByte(" + arg + ")"; }}
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, {"uint8", [&arg] { return "Marshal.ReadByte(" + arg + ")"; }}
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, {"int16", [&arg] { return "Marshal.ReadInt16(" + arg + ")"; }}
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, {"uint16", [&arg] { return "(ushort)Marshal.ReadInt16(" + arg + ")"; }}
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, {"int32", [&arg] { return "Marshal.ReadInt32(" + arg + ")"; }}
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, {"uint32", [&arg] { return "(uint) Marshal.ReadInt32(" + arg + ")"; }}
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// We don't support int128 as csharp has no similar datatype.
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, {"int64", [&arg] { return "Marshal.ReadInt64(" + arg + ")"; }}
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, {"uint64", [&arg] { return "(ulong) Marshal.ReadInt64(" + arg + ")"; }}
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, {"float", [&arg] { return "Eina.PrimitiveConversion.PointerToManaged<float>(" + arg + ")"; }}
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, {"double", [&arg] { return "Eina.PrimitiveConversion.PointerToManaged<double>(" + arg + ")"; }}
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, {"string", [&arg] { return "Eina.StringConversion.NativeUtf8ToManagedString(" + arg + ")"; }}
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, {"stringshare", [&arg] { return "Eina.StringConversion.NativeUtf8ToManagedString(" + arg + ")"; }}
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, {"Eina.Error", [&arg] { return "(Eina.Error)Marshal.PtrToStructure(" + arg + ", typeof(Eina.Error))"; }}
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};
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std::string full_type_name = name_helpers::type_full_eolian_name(regular);
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auto filter_func = [®ular, &full_type_name] (match const& m)
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{
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return (!m.name || *m.name == regular.base_type || *m.name == full_type_name);
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};
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auto accept_func = [&](std::string const& conversion)
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{
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return as_generator(conversion).generate(sink, attributes::unused, *context);
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};
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if (eina::optional<bool> b = type_match::get_match(match_table, filter_func, accept_func))
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return *b;
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else
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{
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// Type defined in Eo is passed here. (e.g. enum type defined in Eo)
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// Uses conversion from IntPtr with type casting to the given type.
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return as_generator(
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" (" << arg_type << ")info"
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).generate(sink, attributes::unused, *context);
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}
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}
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bool operator()(grammar::attributes::klass_name const& cls) const
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{
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return as_generator("(Efl.Eo.Globals.CreateWrapperFor(info) as " + name_helpers::klass_full_concrete_name(cls) + ")").generate(sink, attributes::unused, *context);
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}
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bool operator()(attributes::complex_type_def const& types) const
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{
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if (types.outer.base_type == "iterator")
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return as_generator("Efl.Eo.Globals.IteratorTo" << eolian_mono::type << "(info)").generate(sink, type, *context);
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else if (types.outer.base_type == "accessor")
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return as_generator("Efl.Eo.Globals.AccessorTo" << eolian_mono::type << "(info)").generate(sink, type, *context);
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else
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return as_generator("new " << eolian_mono::type << "(info, false, false)").generate(sink, type, *context);
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}
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};
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template<typename OutputIterator, typename Context>
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struct pack_event_info_and_call_visitor
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{
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mutable OutputIterator sink;
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Context const* context;
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attributes::type_def const& type;
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std::string library_name;
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std::string evt_c_name;
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typedef pack_event_info_and_call_visitor<OutputIterator, Context> visitor_type;
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typedef bool result_type;
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bool operator()(grammar::attributes::regular_type_def const& regular) const
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{
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std::string arg_type = name_helpers::type_full_managed_name(regular);
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auto const& indent = current_indentation(*context);
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if (regular.is_struct())
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{
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return as_generator(
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indent.inc() << "Contract.Requires(e != null, nameof(e));\n"
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<< indent.inc() << "IntPtr info = Marshal.AllocHGlobal(Marshal.SizeOf(e.arg));\n"
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<< indent.inc() << "CallNativeEventCallback(" + library_name + ", \"_" + evt_c_name + "\", info, " << "(p) => Marshal.FreeHGlobal(p));\n"
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).generate(sink, attributes::unused, *context);
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}
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using attributes::regular_type_def;
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struct match
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{
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eina::optional<std::string> name;
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std::function<std::string()> function;
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};
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std::string full_type_name = name_helpers::type_full_eolian_name(regular);
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auto filter_func = [®ular, &full_type_name] (match const& m)
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{
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return (!m.name || *m.name == regular.base_type || *m.name == full_type_name);
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};
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match const str_table[] =
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{
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{"string", [] { return "e.arg"; }}
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, {"stringshare", [] { return "e.arg"; }}
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};
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auto str_accept_func = [&](std::string const& conversion)
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{
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return as_generator(
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indent.inc() << "Contract.Requires(e != null, nameof(e));\n"
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<< indent.inc() << "IntPtr info = Eina.StringConversion.ManagedStringToNativeUtf8Alloc(" << conversion << ");\n"
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<< indent.inc() << "CallNativeEventCallback(" + library_name + ", \"_" + evt_c_name + "\", info, " << "(p) => Eina.MemoryNative.Free(p));\n"
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).generate(sink, attributes::unused, *context);
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};
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if (eina::optional<bool> b = type_match::get_match(str_table, filter_func, str_accept_func))
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return *b;
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match const value_table [] =
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{
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{"bool", [] { return "e.arg ? (byte) 1 : (byte) 0"; }}
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, {"Eina.Error", [] { return "(int)e.arg"; }}
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, {nullptr, [] { return "e.arg"; }}
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};
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auto value_accept_func = [&](std::string const& conversion)
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{
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return as_generator(
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indent.inc() << "Contract.Requires(e != null, nameof(e));\n"
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<< indent.inc() << "IntPtr info = Eina.PrimitiveConversion.ManagedToPointerAlloc(" << conversion << ");\n"
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<< indent.inc() << "CallNativeEventCallback(" + library_name + ", \"_" + evt_c_name + "\", info, " << "(p) => Marshal.FreeHGlobal(p));\n"
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).generate(sink, attributes::unused, *context);
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};
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if (eina::optional<bool> b = type_match::get_match(value_table, filter_func, value_accept_func))
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return *b;
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return value_accept_func("e.args");
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}
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bool operator()(grammar::attributes::klass_name const&) const
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{
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auto const& indent = current_indentation(*context);
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return as_generator(
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indent.inc() << "Contract.Requires(e != null, nameof(e));\n"
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<< indent.inc() << "IntPtr info = e.arg.NativeHandle;\n"
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<< indent.inc() << "CallNativeEventCallback(" << library_name << ", \"_" << evt_c_name << "\", IntPtr.Zero, null);\n"
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).generate(sink, attributes::unused, *context);
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}
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bool operator()(attributes::complex_type_def const& type) const
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{
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auto const& indent = current_indentation(*context);
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if ((type.outer.base_type == "iterator") || (type.outer.base_type == "accessor"))
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return true;
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return as_generator(
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indent.inc() << "Contract.Requires(e != null, nameof(e));\n"
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<< indent.inc() << "IntPtr info = e.arg.Handle;\n"
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<< indent.inc() << "CallNativeEventCallback(" << library_name << ", \"_" << evt_c_name << "\", IntPtr.Zero, null);\n"
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).generate(sink, attributes::unused, *context);
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}
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};
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/*
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* Generates a struct wrapping the argument of a given event.
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*/
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struct event_argument_wrapper_generator
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{
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template<typename OutputIterator, typename Context>
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bool generate(OutputIterator sink, attributes::event_def const& evt, Context const& context) const
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{
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efl::eina::optional<grammar::attributes::type_def> etype = evt.type;
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if (!etype.is_engaged())
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return true;
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if (blacklist::is_event_blacklisted(evt, context))
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return true;
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std::string evt_name = name_helpers::managed_event_name(evt.name);
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if (!as_generator(scope_tab << "/// <summary>Event argument wrapper for event <see cref=\""
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<< join_namespaces(evt.klass.namespaces, '.', managed_namespace)
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<< klass_interface_name(evt.klass) << "." << evt_name << "\"/>.\n"
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).generate(sink, nullptr, context))
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return false;
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std::string since;
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if (!evt.is_beta)
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{
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since = evt.documentation.since;
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if (since.empty())
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{
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auto unit = (const Eolian_Unit*) context_find_tag<eolian_state_context>(context).state;
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attributes::klass_def klass(get_klass(evt.klass, unit), unit);
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since = klass.documentation.since;
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}
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if (!since.empty())
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{
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if (!as_generator(
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scope_tab << lit("/// <para>Since EFL ") << evt.documentation.since << ".</para>\n"
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).generate(sink, nullptr, context))
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return false;
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}
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else
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{
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EINA_CXX_DOM_LOG_ERR(eolian_mono::domain) << "Event " << evt.name << " of class " << evt.klass.eolian_name
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<< " is stable but has no 'Since' information.";
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// We do not bail out here because there are some cases of this happening upstream.
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}
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}
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if (!as_generator(scope_tab << lit("/// </summary>\n")
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<< scope_tab << "[Efl.Eo.BindingEntity]\n"
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<< scope_tab << "public class " << name_helpers::managed_event_args_short_name(evt) << " : EventArgs {\n"
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<< scope_tab(2) << "/// <summary>Actual event payload.\n"
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).generate(sink, nullptr, context))
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return false;
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if (since != "")
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{
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if (!as_generator(scope_tab(2) << "/// <para>Since EFL " << since << ".</para>\n").generate(sink, nullptr, context))
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return false;
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}
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if (!as_generator(scope_tab(2) << "/// </summary>\n"
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<< scope_tab(2) << "/// <value>" << documentation_string << "</value>\n"
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<< scope_tab(2) << "public " << type << " arg { get; set; }\n"
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<< scope_tab << "}\n\n"
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).generate(sink, std::make_tuple(evt.documentation.summary, *etype), context))
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return false;
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return true;
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}
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} const event_argument_wrapper {};
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/*
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* Generates an event declaration as a C# Interface member.
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* In regular/abstract classes they are declared directly in their
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* implementation in event_definition_generator.
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*/
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struct event_declaration_generator
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{
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template<typename OutputIterator, typename Context>
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bool generate(OutputIterator sink, attributes::event_def const& evt, Context const& context) const
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{
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std::string wrapper_args_type;
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std::string evt_name = name_helpers::managed_event_name(evt.name);
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if (blacklist::is_event_blacklisted(evt, context))
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return true;
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if (evt.type.is_engaged())
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wrapper_args_type = "<" + name_helpers::managed_event_args_name(evt) + ">";
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if (!as_generator(documentation(2))
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.generate(sink, evt, context)) return false;
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if (evt.type.is_engaged())
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if (!as_generator(
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scope_tab(2) << "/// <value><see cref=\"" << name_helpers::managed_event_args_name(evt) << "\"/></value>\n"
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).generate(sink, evt, context)) return false;
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if (!as_generator(
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scope_tab(2) << "event EventHandler" << wrapper_args_type << " " << evt_name << ";\n"
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).generate(sink, evt, context))
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return false;
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return true;
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}
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} const event_declaration {};
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struct event_definition_generator
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{
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attributes::klass_def const& klass;
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attributes::klass_def const& leaf_klass;
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bool is_inherited_event;
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template<typename OutputIterator, typename Context>
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bool generate(OutputIterator sink, attributes::event_def const& evt, Context const& context) const
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{
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if (blacklist::is_event_blacklisted(evt, context))
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return true;
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auto library_name = context_find_tag<library_context>(context).actual_library_name(klass.filename);
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std::string managed_evt_name = name_helpers::managed_event_name(evt.name);
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auto const& indent = current_indentation(context);
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bool is_unique = helpers::is_unique_event(evt, leaf_klass);
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bool use_explicit_impl = is_inherited_event && !is_unique;
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// The name of the public event that goes in the public API.
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std::string wrapper_evt_name;
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if (use_explicit_impl)
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wrapper_evt_name = name_helpers::translate_inherited_event_name(evt, klass);
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else
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wrapper_evt_name = managed_evt_name;
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std::string klass_name;
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if (is_inherited_event)
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klass_name = name_helpers::klass_full_interface_name(klass);
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else
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klass_name = name_helpers::klass_concrete_name(klass);
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std::string wrapper_args_type = "EventArgs";
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std::string wrapper_args_template = "";
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std::string event_args = "EventArgs args = EventArgs.Empty;\n";
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std::string event_native_call;
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efl::eina::optional<grammar::attributes::type_def> etype = evt.type;
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if (!etype.is_engaged())
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{
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auto event_call_site_sink = std::back_inserter(event_native_call);
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if (!as_generator(indent.inc().inc().inc() << "CallNativeEventCallback(" << library_name << ", \"_" << utils::to_uppercase(evt.c_name) << "\", IntPtr.Zero, null);\n")
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.generate(event_call_site_sink, attributes::unused, context))
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return false;
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}
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else
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{
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wrapper_args_type = name_helpers::managed_event_args_name(evt);
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wrapper_args_template = "<" + wrapper_args_type + ">";
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std::string arg_initializer;
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auto arg_initializer_sink = std::back_inserter(arg_initializer);
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auto event_call_site_sink = std::back_inserter(event_native_call);
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auto sub_context = change_indentation(indent.inc().inc(), context);
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if (!as_generator(", info => new " << wrapper_args_type << "{ "
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<< "arg = ").generate(arg_initializer_sink, attributes::unused, context))
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return false;
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if (!(*etype).original_type.visit(unpack_event_args_visitor<decltype(arg_initializer_sink), decltype(sub_context)>{arg_initializer_sink, &sub_context, *etype}))
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return false;
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if (!(*etype).original_type.visit(pack_event_info_and_call_visitor<decltype(event_call_site_sink), decltype(sub_context)>{event_call_site_sink, &sub_context, *etype, library_name, utils::to_uppercase(evt.c_name)}))
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return false;
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arg_initializer += " }";
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event_args = arg_initializer;
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}
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if(!as_generator(documentation(2)).generate(sink, evt, context))
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return false;
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if (etype.is_engaged())
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if (!as_generator(
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scope_tab(2) << "/// <value><see cref=\"" << wrapper_args_type << "\"/></value>\n"
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).generate(sink, evt, context)) return false;
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|
|
// Visible event declaration. Either a regular class member or an explicit interface implementation.
|
|
if (klass.type == attributes::class_type::interface_ || klass.type == attributes::class_type::mixin)
|
|
{
|
|
// Public event implementation.
|
|
if (!as_generator(
|
|
scope_tab(2) << (!use_explicit_impl ? "public " : " ") << "event EventHandler" << wrapper_args_template << " " << (use_explicit_impl ? (klass_name + ".") : "") << managed_evt_name << "\n"
|
|
).generate(sink, attributes::unused, context))
|
|
return false;
|
|
}
|
|
else // For inheritable classes event handling.
|
|
{
|
|
// We may have inherited an event with the same name as this concrete event, thus
|
|
// the concrete event would "hide" the interface one, requiring the new keyword.
|
|
std::string visibility = "public ";
|
|
if (!is_unique)
|
|
visibility += "new ";
|
|
|
|
if (!as_generator(
|
|
scope_tab(2) << visibility << "event EventHandler" << wrapper_args_template << " " << wrapper_evt_name << "\n"
|
|
).generate(sink, attributes::unused, context))
|
|
return false;
|
|
}
|
|
|
|
if (!generate_event_add_remove(sink, evt, event_args, context))
|
|
return false;
|
|
|
|
if (!generate_event_trigger(sink, evt, wrapper_evt_name, wrapper_args_type, event_native_call, context))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
template<typename OutputIterator, typename Context>
|
|
bool generate_event_trigger(OutputIterator sink
|
|
, attributes::event_def const &evt
|
|
, std::string const& event_name
|
|
, std::string const& event_args_type
|
|
, std::string const& event_native_call
|
|
, Context const& context) const
|
|
{
|
|
auto library_name = context_find_tag<library_context>(context).actual_library_name(klass.filename);
|
|
std::string upper_c_name = utils::to_uppercase(evt.c_name);
|
|
bool is_concrete = context_find_tag<class_context>(context).current_wrapper_kind == class_context::concrete;
|
|
|
|
if (!as_generator(
|
|
scope_tab(2) << "/// <summary>Method to raise event "<< event_name << ".\n"
|
|
).generate(sink, nullptr, context))
|
|
return false;
|
|
|
|
if (!evt.is_beta)
|
|
{
|
|
std::string since = evt.documentation.since;
|
|
|
|
if (since.empty())
|
|
{
|
|
auto unit = (const Eolian_Unit*) context_find_tag<eolian_state_context>(context).state;
|
|
attributes::klass_def klass(get_klass(evt.klass, unit), unit);
|
|
since = klass.documentation.since;
|
|
}
|
|
|
|
if (!since.empty())
|
|
{
|
|
|
|
if (!as_generator(
|
|
scope_tab(2) << "/// <para>Since EFL " << evt.documentation.since << ".</para>\n"
|
|
).generate(sink, nullptr, context))
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
EINA_CXX_DOM_LOG_ERR(eolian_mono::domain) << "Event " << evt.name << " of class " << evt.klass.eolian_name
|
|
<< " is stable but has no 'Since' information.";
|
|
// We do not bail out here because there are some cases of this happening upstream.
|
|
}
|
|
}
|
|
|
|
// Close summary
|
|
if (!as_generator(scope_tab(2) << "/// </summary>\n").generate(sink, nullptr, context))
|
|
return false;
|
|
|
|
if (evt.type.is_engaged())
|
|
{
|
|
if (!as_generator(scope_tab(2) << "/// <param name=\"e\">Event to raise.</param>\n"
|
|
).generate(sink, nullptr, context))
|
|
return false;
|
|
}
|
|
|
|
if (!as_generator(
|
|
scope_tab(2) << (is_concrete ? "public" : "protected virtual") << " void On" << event_name << "(" << (!evt.type.is_engaged() ? "" : event_args_type + " e") << ")\n"
|
|
<< scope_tab(2) << "{\n"
|
|
<< event_native_call
|
|
<< scope_tab(2) << "}\n\n"
|
|
).generate(sink, nullptr, context))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
template<typename OutputIterator, typename Context>
|
|
bool generate_event_add_remove(OutputIterator sink
|
|
, attributes::event_def const &evt
|
|
, std::string const& event_args
|
|
, Context const& context) const
|
|
{
|
|
std::string upper_c_name = utils::to_uppercase(evt.c_name);
|
|
auto unit = (const Eolian_Unit*) context_find_tag<eolian_state_context>(context).state;
|
|
attributes::klass_def klass(get_klass(evt.klass, unit), unit);
|
|
auto library_name = context_find_tag<library_context>(context).actual_library_name(klass.filename);
|
|
return as_generator(
|
|
scope_tab(2) << "{\n"
|
|
<< scope_tab(2) << scope_tab << "add\n"
|
|
<< scope_tab(2) << scope_tab << "{\n"//evt.type.is_engaged()
|
|
<< scope_tab(2) << scope_tab << scope_tab << "Efl.EventCb callerCb = GetInternalEventCallback(value"
|
|
<< (evt.type.is_engaged() ? event_args : "") << ");\n"
|
|
<< scope_tab(2) << scope_tab << scope_tab << "string key = \"_" << upper_c_name << "\";\n"
|
|
<< scope_tab(2) << scope_tab << scope_tab << "AddNativeEventHandler(" << library_name << ", key, callerCb, value);\n"
|
|
<< scope_tab(2) << scope_tab << "}\n\n"
|
|
<< scope_tab(2) << scope_tab << "remove\n"
|
|
<< scope_tab(2) << scope_tab << "{\n"
|
|
<< scope_tab(2) << scope_tab << scope_tab << "string key = \"_" << upper_c_name << "\";\n"
|
|
<< scope_tab(2) << scope_tab << scope_tab << "RemoveNativeEventHandler(" << library_name << ", key, value);\n"
|
|
<< scope_tab(2) << scope_tab << "}\n"
|
|
<< scope_tab(2) << "}\n\n"
|
|
).generate(sink, attributes::unused, context);
|
|
}
|
|
};
|
|
|
|
struct event_definition_parameterized
|
|
{
|
|
event_definition_generator operator()(attributes::klass_def const& klass, attributes::klass_def const& leaf_klass) const
|
|
{
|
|
bool is_inherited_event = klass != leaf_klass;
|
|
return {klass, leaf_klass, is_inherited_event};
|
|
}
|
|
} const event_definition;
|
|
|
|
}
|
|
|
|
namespace efl { namespace eolian { namespace grammar {
|
|
|
|
template <>
|
|
struct is_eager_generator<struct ::eolian_mono::event_argument_wrapper_generator> : std::true_type {};
|
|
template <>
|
|
struct is_generator<struct ::eolian_mono::event_argument_wrapper_generator> : std::true_type {};
|
|
|
|
template <>
|
|
struct is_eager_generator<struct ::eolian_mono::event_declaration_generator> : std::true_type {};
|
|
template <>
|
|
struct is_generator<struct ::eolian_mono::event_declaration_generator> : std::true_type {};
|
|
|
|
template <>
|
|
struct is_eager_generator<struct ::eolian_mono::event_definition_generator> : std::true_type {};
|
|
template <>
|
|
struct is_generator<struct ::eolian_mono::event_definition_generator> : std::true_type {};
|
|
template <>
|
|
struct is_generator<struct ::eolian_mono::event_definition_parameterized> : std::true_type {};
|
|
|
|
namespace type_traits {
|
|
template <>
|
|
struct attributes_needed<struct ::eolian_mono::event_argument_wrapper_generator> : std::integral_constant<int, 1> {};
|
|
template <>
|
|
struct attributes_needed<struct ::eolian_mono::event_declaration_generator> : std::integral_constant<int, 1> {};
|
|
template <>
|
|
struct attributes_needed<struct ::eolian_mono::event_definition_generator> : std::integral_constant<int, 1> {};
|
|
template <>
|
|
struct attributes_needed<struct ::eolian_mono::event_definition_parameterized> : std::integral_constant<int, 1> {};
|
|
}
|
|
} } }
|
|
|
|
#endif
|