Do not rely on latest base/template_util.
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Cheng Zhao
parent
ff65b7dae1
commit
4cada31f80
4 changed files with 157 additions and 6 deletions
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@ -8,9 +8,9 @@
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#include "base/bind.h"
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#include "base/callback.h"
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#include "base/strings/string_piece.h"
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#include "base/template_util.h"
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#include "native_mate/converter.h"
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#include "native_mate/function_template.h"
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#include "native_mate/template_util.h"
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#include "v8/include/v8.h"
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namespace mate {
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@ -42,8 +42,8 @@ struct CallbackTraits<base::Callback<T> > {
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// come from the the JavaScript "this" object the function was called on, not
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// from the first normal parameter.
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template<typename T>
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struct CallbackTraits<T, typename base::enable_if<
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base::is_member_function_pointer<T>::value>::type> {
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struct CallbackTraits<T, typename enable_if<
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is_member_function_pointer<T>::value>::type> {
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static v8::Handle<v8::FunctionTemplate> CreateTemplate(v8::Isolate* isolate,
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T callback) {
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return CreateFunctionTemplate(isolate, base::Bind(callback),
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150
native_mate/template_util.h
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150
native_mate/template_util.h
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@ -0,0 +1,150 @@
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NATIVE_MATE_TEMPLATE_UTIL_H_
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#define NATIVE_MATE_TEMPLATE_UTIL_H_
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#include <cstddef> // For size_t.
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#include "build/build_config.h"
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namespace mate {
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// template definitions from tr1
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template<class T, T v>
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struct integral_constant {
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static const T value = v;
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typedef T value_type;
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typedef integral_constant<T, v> type;
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};
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template <class T, T v> const T integral_constant<T, v>::value;
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typedef integral_constant<bool, true> true_type;
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typedef integral_constant<bool, false> false_type;
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template <class T> struct is_pointer : false_type {};
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template <class T> struct is_pointer<T*> : true_type {};
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// Member function pointer detection up to four params. Add more as needed
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// below. This is built-in to C++ 11, and we can remove this when we switch.
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template<typename T>
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struct is_member_function_pointer : false_type {};
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template <typename R, typename Z>
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struct is_member_function_pointer<R(Z::*)()> : true_type {};
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template <typename R, typename Z>
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struct is_member_function_pointer<R(Z::*)() const> : true_type {};
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template <typename R, typename Z, typename A>
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struct is_member_function_pointer<R(Z::*)(A)> : true_type {};
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template <typename R, typename Z, typename A>
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struct is_member_function_pointer<R(Z::*)(A) const> : true_type {};
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template <typename R, typename Z, typename A, typename B>
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struct is_member_function_pointer<R(Z::*)(A, B)> : true_type {};
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template <typename R, typename Z, typename A, typename B>
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struct is_member_function_pointer<R(Z::*)(A, B) const> : true_type {};
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template <typename R, typename Z, typename A, typename B, typename C>
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struct is_member_function_pointer<R(Z::*)(A, B, C)> : true_type {};
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template <typename R, typename Z, typename A, typename B, typename C>
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struct is_member_function_pointer<R(Z::*)(A, B, C) const> : true_type {};
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template <typename R, typename Z, typename A, typename B, typename C,
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typename D>
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struct is_member_function_pointer<R(Z::*)(A, B, C, D)> : true_type {};
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template <typename R, typename Z, typename A, typename B, typename C,
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typename D>
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struct is_member_function_pointer<R(Z::*)(A, B, C, D) const> : true_type {};
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template <class T, class U> struct is_same : public false_type {};
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template <class T> struct is_same<T,T> : true_type {};
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template<class> struct is_array : public false_type {};
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template<class T, size_t n> struct is_array<T[n]> : public true_type {};
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template<class T> struct is_array<T[]> : public true_type {};
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template <class T> struct is_non_const_reference : false_type {};
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template <class T> struct is_non_const_reference<T&> : true_type {};
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template <class T> struct is_non_const_reference<const T&> : false_type {};
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template <class T> struct is_const : false_type {};
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template <class T> struct is_const<const T> : true_type {};
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template <class T> struct is_void : false_type {};
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template <> struct is_void<void> : true_type {};
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namespace internal {
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// Types YesType and NoType are guaranteed such that sizeof(YesType) <
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// sizeof(NoType).
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typedef char YesType;
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struct NoType {
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YesType dummy[2];
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};
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// This class is an implementation detail for is_convertible, and you
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// don't need to know how it works to use is_convertible. For those
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// who care: we declare two different functions, one whose argument is
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// of type To and one with a variadic argument list. We give them
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// return types of different size, so we can use sizeof to trick the
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// compiler into telling us which function it would have chosen if we
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// had called it with an argument of type From. See Alexandrescu's
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// _Modern C++ Design_ for more details on this sort of trick.
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struct ConvertHelper {
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template <typename To>
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static YesType Test(To);
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template <typename To>
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static NoType Test(...);
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template <typename From>
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static From& Create();
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};
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// Used to determine if a type is a struct/union/class. Inspired by Boost's
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// is_class type_trait implementation.
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struct IsClassHelper {
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template <typename C>
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static YesType Test(void(C::*)(void));
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template <typename C>
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static NoType Test(...);
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};
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} // namespace internal
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// Inherits from true_type if From is convertible to To, false_type otherwise.
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//
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// Note that if the type is convertible, this will be a true_type REGARDLESS
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// of whether or not the conversion would emit a warning.
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template <typename From, typename To>
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struct is_convertible
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: integral_constant<bool,
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sizeof(internal::ConvertHelper::Test<To>(
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internal::ConvertHelper::Create<From>())) ==
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sizeof(internal::YesType)> {
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};
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template <typename T>
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struct is_class
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: integral_constant<bool,
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sizeof(internal::IsClassHelper::Test<T>(0)) ==
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sizeof(internal::YesType)> {
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};
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template<bool B, class T = void>
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struct enable_if {};
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template<class T>
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struct enable_if<true, T> { typedef T type; };
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} // namespace mate
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#endif // NATIVE_MATE_TEMPLATE_UTIL_H_
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@ -5,9 +5,9 @@
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#ifndef NATIVE_MATE_WRAPPABLE_H_
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#define NATIVE_MATE_WRAPPABLE_H_
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#include "base/template_util.h"
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#include "native_mate/compat.h"
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#include "native_mate/converter.h"
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#include "native_mate/template_util.h"
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namespace mate {
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@ -67,8 +67,8 @@ class Wrappable {
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// This converter handles any subclass of Wrappable.
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template<typename T>
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struct Converter<T*, typename base::enable_if<
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base::is_convertible<T*, Wrappable*>::value>::type> {
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struct Converter<T*, typename enable_if<
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is_convertible<T*, Wrappable*>::value>::type> {
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static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, T* val) {
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return val->GetWrapper(isolate);
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}
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@ -14,6 +14,7 @@
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'native_mate/object_template_builder.cc',
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'native_mate/object_template_builder.h',
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'native_mate/scoped_persistent.h',
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'native_mate/template_util.h',
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'native_mate/try_catch.cc',
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'native_mate/try_catch.h',
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'native_mate/wrappable.cc',
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