cefpython/src/include/base/cef_template_util.h at cefpython56 · pythonthings/cefpython · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

// * Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// * Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// * Neither the name of Google Inc. nor the name Chromium Embedded

// Framework nor the names of its contributors may be used to endorse

// or promote products derived from this software without specific prior

// written permission.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef CEF_INCLUDE_BASE_CEF_TEMPLATE_UTIL_H_

#define CEF_INCLUDE_BASE_CEF_TEMPLATE_UTIL_H_

#pragma once

#if defined(BASE_TEMPLATE_UTIL_H_)

// Do nothing if the Chromium header has already been included.

// This can happen in cases where Chromium code is used directly by the

// client application. When using Chromium code directly always include

// the Chromium header first to avoid type conflicts.

#elif defined(USING_CHROMIUM_INCLUDES)

// When building CEF include the Chromium header directly.

#include "base/template_util.h"

#else // !USING_CHROMIUM_INCLUDES

// The following is substantially similar to the Chromium implementation.

// If the Chromium implementation diverges the below implementation should be

// updated to match.

#include <cstddef> // For size_t.

#include "include/base/cef_build.h"

namespace base {

// template definitions from tr1

template<class T, T v>

struct integral_constant {

static const T value = v;

typedef T value_type;

typedef integral_constant<T, v> type;

};

template <class T, T v> const T integral_constant<T, v>::value;

typedef integral_constant<bool, true> true_type;

typedef integral_constant<bool, false> false_type;

template <class T> struct is_pointer : false_type {};

template <class T> struct is_pointer<T*> : true_type {};

// Member function pointer detection up to four params. Add more as needed

// below. This is built-in to C++ 11, and we can remove this when we switch.

template<typename T>

struct is_member_function_pointer : false_type {};

template <typename R, typename Z>

struct is_member_function_pointer<R(Z::*)()> : true_type {};

template <typename R, typename Z>

struct is_member_function_pointer<R(Z::*)() const> : true_type {};

template <typename R, typename Z, typename A>

struct is_member_function_pointer<R(Z::*)(A)> : true_type {};

template <typename R, typename Z, typename A>

struct is_member_function_pointer<R(Z::*)(A) const> : true_type {};

template <typename R, typename Z, typename A, typename B>

struct is_member_function_pointer<R(Z::*)(A, B)> : true_type {};

template <typename R, typename Z, typename A, typename B>

struct is_member_function_pointer<R(Z::*)(A, B) const> : true_type {};

template <typename R, typename Z, typename A, typename B, typename C>

struct is_member_function_pointer<R(Z::*)(A, B, C)> : true_type {};

template <typename R, typename Z, typename A, typename B, typename C>

struct is_member_function_pointer<R(Z::*)(A, B, C) const> : true_type {};

template <typename R, typename Z, typename A, typename B, typename C,

typename D>

struct is_member_function_pointer<R(Z::*)(A, B, C, D)> : true_type {};

template <typename R, typename Z, typename A, typename B, typename C,

typename D>

struct is_member_function_pointer<R(Z::*)(A, B, C, D) const> : true_type {};

template <class T, class U> struct is_same : public false_type {};

template <class T> struct is_same<T,T> : true_type {};

template<class> struct is_array : public false_type {};

template<class T, size_t n> struct is_array<T[n]> : public true_type {};

template<class T> struct is_array<T[]> : public true_type {};

template <class T> struct is_non_const_reference : false_type {};

template <class T> struct is_non_const_reference<T&> : true_type {};

template <class T> struct is_non_const_reference<const T&> : false_type {};

template <class T> struct is_const : false_type {};

template <class T> struct is_const<const T> : true_type {};

template <class T> struct is_void : false_type {};

template <> struct is_void<void> : true_type {};

namespace cef_internal {

// Types YesType and NoType are guaranteed such that sizeof(YesType) <

// sizeof(NoType).

typedef char YesType;

struct NoType {

YesType dummy[2];

};

// This class is an implementation detail for is_convertible, and you

// don't need to know how it works to use is_convertible. For those

// who care: we declare two different functions, one whose argument is

// of type To and one with a variadic argument list. We give them

// return types of different size, so we can use sizeof to trick the

// compiler into telling us which function it would have chosen if we

// had called it with an argument of type From. See Alexandrescu's

// _Modern C++ Design_ for more details on this sort of trick.

struct ConvertHelper {

template <typename To>

static YesType Test(To);

template <typename To>

static NoType Test(...);

template <typename From>

static From& Create();

};

// Used to determine if a type is a struct/union/class. Inspired by Boost's

// is_class type_trait implementation.

struct IsClassHelper {

template <typename C>

static YesType Test(void(C::*)(void));

template <typename C>

static NoType Test(...);

};

} // namespace cef_internal

// Inherits from true_type if From is convertible to To, false_type otherwise.

// Note that if the type is convertible, this will be a true_type REGARDLESS

// of whether or not the conversion would emit a warning.

template <typename From, typename To>

struct is_convertible

: integral_constant<bool,

sizeof(cef_internal::ConvertHelper::Test<To>(

cef_internal::ConvertHelper::Create<From>())) ==

sizeof(cef_internal::YesType)> {

};

template <typename T>

struct is_class

: integral_constant<bool,

sizeof(cef_internal::IsClassHelper::Test<T>(0)) ==

sizeof(cef_internal::YesType)> {

};

template<bool B, class T = void>

struct enable_if {};

template<class T>

struct enable_if<true, T> { typedef T type; };

} // namespace base

#endif // !USING_CHROMIUM_INCLUDES

#endif // CEF_INCLUDE_BASE_CEF_TEMPLATE_UTIL_H_

cefpython/src/include/base/cef_template_util.h at cefpython56 · pythonthings/cefpython · GitHub

Repository navigation

Expand file tree

Breadcrumbs

cef_template_util.h

Latest commit

History

Breadcrumbs

cef_template_util.h

File metadata and controls