mirror of
https://gitlab.linphone.org/BC/public/linphone-iphone.git
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113 lines
3.9 KiB
C++
113 lines
3.9 KiB
C++
/*
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* enum-generator.h
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* Copyright (C) 2010-2018 Belledonne Communications SARL
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef _L_ENUM_GENERATOR_H_
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#define _L_ENUM_GENERATOR_H_
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#include "linphone/utils/magic-macros.h"
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// =============================================================================
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LINPHONE_BEGIN_NAMESPACE
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// -----------------------------------------------------------------------------
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// Low-level, do not call.
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// -----------------------------------------------------------------------------
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// Declare one enum value. `value` is optional, it can be generated.
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// It's useful to force value in the case of mask.
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#define L_DECLARE_ENUM_VALUE_1_ARG(NAME) NAME,
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#define L_DECLARE_ENUM_VALUE_2_ARGS(NAME, VALUE) NAME = VALUE,
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// Call the right macro. (With or without value.)
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#define L_DECLARE_ENUM_MACRO_CHOOSER(...) \
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L_EXPAND(L_GET_ARG_3(__VA_ARGS__, L_DECLARE_ENUM_VALUE_2_ARGS, L_DECLARE_ENUM_VALUE_1_ARG))
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// Enum value declaration.
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#define L_DECLARE_ENUM_VALUE(...) \
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L_EXPAND(L_DECLARE_ENUM_MACRO_CHOOSER(__VA_ARGS__)(__VA_ARGS__))
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#ifdef __cplusplus
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// `getEnumValue` helper.
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#define L_DECLARE_ENUM_VALUE_STR_CASE(ENUM_NAME, VALUE_NAME, ...) \
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case ENUM_NAME::VALUE_NAME: return #ENUM_NAME "::" #VALUE_NAME;
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// Helper to get enum name.
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#define L_DECLARE_ENUM_NAME(NAME, ...) NAME,
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// Get names as string from enum values.
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#define L_GET_ENUM_VALUE_NAMES(VALUES) L_GET_HEAP(VALUES(L_DECLARE_ENUM_NAME))
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#endif
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// -----------------------------------------------------------------------------
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// Public API.
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// -----------------------------------------------------------------------------
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#ifdef __cplusplus
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#define L_DECLARE_ENUM(NAME, VALUES) \
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enum class NAME { \
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VALUES(L_DECLARE_ENUM_VALUE) \
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}; \
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friend constexpr const char *getEnumNameAsString (NAME) { \
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return #NAME; \
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} \
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friend const char *getEnumValueAsString (const NAME &value) { \
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switch (value) { \
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L_APPLY_WITHOUT_COMMA(L_DECLARE_ENUM_VALUE_STR_CASE, NAME, L_GET_ENUM_VALUE_NAMES(VALUES)) \
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} \
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return ""; \
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}
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template<typename T>
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inline char getEnumValueAsString (const T &) { return 0; }
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template<typename T>
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struct IsDefinedEnum {
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enum { value = sizeof(getEnumValueAsString(std::declval<T>())) == sizeof(const char *) };
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};
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#endif
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#define L_C_ENUM_PREFIX Linphone
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// TODO: This macro should be used but it is triggering a bug in doxygen that
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// has been fixed in the 1.8.8 version. See https://bugzilla.gnome.org/show_bug.cgi?id=731985
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// Meanwhile use 2 different macros.
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#if 0
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#define L_DECLARE_C_ENUM(NAME, VALUES) \
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typedef enum L_CONCAT(_, L_CONCAT(L_C_ENUM_PREFIX, NAME)) { \
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L_APPLY(L_CONCAT, L_CONCAT(L_C_ENUM_PREFIX, NAME), L_GET_HEAP(VALUES(L_DECLARE_ENUM_VALUE))) \
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} L_CONCAT(L_C_ENUM_PREFIX, NAME)
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#else
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#define L_DECLARE_C_ENUM(NAME, VALUES) \
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typedef enum L_CONCAT(_, L_CONCAT(L_C_ENUM_PREFIX, NAME)) { \
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L_APPLY(L_CONCAT, L_CONCAT(L_C_ENUM_PREFIX, NAME), L_GET_HEAP(VALUES(L_DECLARE_ENUM_VALUE_1_ARG))) \
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} L_CONCAT(L_C_ENUM_PREFIX, NAME)
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#define L_DECLARE_C_ENUM_FIXED_VALUES(NAME, VALUES) \
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typedef enum L_CONCAT(_, L_CONCAT(L_C_ENUM_PREFIX, NAME)) { \
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L_APPLY(L_CONCAT, L_CONCAT(L_C_ENUM_PREFIX, NAME), L_GET_HEAP(VALUES(L_DECLARE_ENUM_VALUE_2_ARGS))) \
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} L_CONCAT(L_C_ENUM_PREFIX, NAME)
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#endif
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LINPHONE_END_NAMESPACE
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#endif // ifndef _L_ENUM_GENERATOR_H_
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