kicad/include/macros.h

199 lines
6.8 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2020 Ian McInerney <ian.s.mcinerney@ieee.org>
* Copyright (C) 2007-2014 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 1992-2020 KiCad Developers, see CHANGELOG.TXT for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* @file macros.h
* @brief This file contains miscellaneous commonly used macros and functions.
*/
#ifndef MACROS_H
#define MACROS_H
#include <deque>
#include <vector>
#include <map>
#include <set>
#include <memory> // std::shared_ptr
#include <wx/string.h>
#if defined( __has_attribute )
#define KI_HAS_ATTRIBUTE( x ) __has_attribute( x )
#else
#define KI_HAS_ATTRIBUTE( x ) 0
#endif
// Based on the declaration inside the LLVM source code
#if defined( __cplusplus ) && defined( __has_cpp_attribute )
#define KI_HAS_CPP_ATTRIBUTE( x ) __has_cpp_attribute( x )
#else
#define KI_HAS_CPP_ATTRIBUTE( x ) 0
#endif
/**
* The KI_FALLTHROUGH macro is to be used when switch statement cases should purposely
* fallthrough from one to the next. It must be followed by a ";".
*
* Sample code:
* switch( a )
* {
* case 1:
* // Some code
* KI_FALLTHROUGH;
*
* case 2:
* // More code
* break;
* }
*/
#if __cplusplus >= 201703L
// C++ 17 includes this macro on all compilers
#define KI_FALLTHROUGH [[fallthrough]]
#elif KI_HAS_CPP_ATTRIBUTE( clang::fallthrough )
// Clang provides this attribute to silence the "-Wimplicit-fallthrough" warning
#define KI_FALLTHROUGH [[clang::fallthrough]]
#elif KI_HAS_CPP_ATTRIBUTE( gnu::fallthrough )
// GNU-specific C++ attribute to sliencing the warning
#define KI_FALLTHROUGH [[gnu::fallthrough]]
#elif defined( __GNUC__ ) && __GNUC__ >= 7
// GCC 7+ includes the "-Wimplicit-fallthrough" warning, and this attribute to silence it
#define KI_FALLTHROUGH __attribute__ ((fallthrough))
#else
// In every other case, don't do anything
#define KI_FALLTHROUGH ( ( void ) 0 )
#endif
/**
* Macro TO_UTF8
* converts a wxString to a UTF8 encoded C string for all wxWidgets build modes.
* wxstring is a wxString, not a wxT() or _(). The scope of the return value
* is very limited and volatile, but can be used with printf() style functions well.
* NOTE: Trying to convert it to a function is tricky because of the
* type of the parameter!
*/
#define TO_UTF8( wxstring ) ( (const char*) (wxstring).utf8_str() )
/**
* Stringifies the given parameter by placing in quotes
* @param cstring STRING (no spaces)
* @return "STRING"
*/
#define TO_STR2(x) #x
#define TO_STR(x) TO_STR2(x)
/**
* function FROM_UTF8
* converts a UTF8 encoded C string to a wxString for all wxWidgets build modes.
*/
static inline wxString FROM_UTF8( const char* cstring )
{
wxString line = wxString::FromUTF8( cstring );
if( line.IsEmpty() ) // happens when cstring is not a valid UTF8 sequence
line = wxConvCurrent->cMB2WC( cstring ); // try to use locale conversion
return line;
}
/// Utility to build comma separated lists in messages
inline void AccumulateDescription( wxString &aDesc, const wxString &aItem )
{
if( !aDesc.IsEmpty() )
aDesc << wxT(", ");
aDesc << aItem;
}
/**
* Function GetChars
* returns a wxChar* to the actual wxChar* data within a wxString, and is
* helpful for passing strings to wxString::Printf() and wxString::Format().
* It can also be passed a UTF8 parameter which will be converted to wxString
* by the compiler.
* <p>
* Example: wxString::Format( wxT( "%s" ), GetChars( UTF( "some text" ) ) );
* <p>
* When wxWidgets is properly built for KiCad, a const wxChar* points to either:
* <ul>
* <li> 32 bit unicode characters on linux/OSX or </li>
* <li> 16 bit UTF16 characters on windows. </li>
* </ul>
* Note that you cannot pass 8 bit strings to wxString::Format() or Printf() so this
* is a useful conversion function to wxChar*, which is needed by wxString::Format().
*
* @return const wxChar* - a pointer to the UNICODE or UTF16 (on windows) text.
*/
static inline const wxChar* GetChars( const wxString& s )
{
return (const wxChar*) s.c_str();
}
/// # of elements in an array. This implements type-safe compile time checking
template <typename T, std::size_t N>
constexpr std::size_t arrayDim(T const (&)[N]) noexcept
{
return N;
}
/**
* Function MIRROR
* Mirror @a aPoint in @a aMirrorRef.
*/
template<typename T>
T Mirror( T aPoint, T aMirrorRef )
{
return -( aPoint - aMirrorRef ) + aMirrorRef;
}
template<typename T>
void MIRROR( T& aPoint, const T& aMirrorRef )
{
aPoint = Mirror( aPoint, aMirrorRef );
}
#ifdef SWIG
/// Declare a std::vector and also the swig %template in unison
#define DECL_VEC_FOR_SWIG(TypeName, MemberType) namespace std { %template(TypeName) vector<MemberType>; } typedef std::vector<MemberType> TypeName;
#define DECL_DEQ_FOR_SWIG(TypeName, MemberType) namespace std { %template(TypeName) deque<MemberType>; } typedef std::deque<MemberType> TypeName;
#define DECL_MAP_FOR_SWIG(TypeName, KeyType, ValueType) namespace std { %template(TypeName) map<KeyType, ValueType>; } typedef std::map<KeyType, ValueType> TypeName;
#define DECL_SPTR_FOR_SWIG(TypeName, MemberType) %shared_ptr(MemberType) namespace std { %template(TypeName) shared_ptr<MemberType>; } typedef std::shared_ptr<MemberType> TypeName;
#define DECL_SET_FOR_SWIG(TypeName, MemberType) namespace std { %template(TypeName) set<MemberType>; } typedef std::set<MemberType> TypeName;
#else
/// Declare a std::vector but no swig %template
#define DECL_VEC_FOR_SWIG(TypeName, MemberType) typedef std::vector<MemberType> TypeName;
#define DECL_DEQ_FOR_SWIG(TypeName, MemberType) typedef std::deque<MemberType> TypeName;
#define DECL_MAP_FOR_SWIG(TypeName, KeyType, ValueType) typedef std::map<KeyType, ValueType> TypeName;
#define DECL_SPTR_FOR_SWIG(TypeName, MemberType) typedef std::shared_ptr<MemberType> TypeName;
#define DECL_SET_FOR_SWIG(TypeName, MemberType) typedef std::set<MemberType> TypeName;
#endif
#endif // MACROS_H