DevTools: update V8Inspector to work with the new v8_inspector API.

third_party/WebKit/Source/platform/inspector_protocol/PlatformSTL.h

+// Copyright (c) 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PlatformSTL_h
+#define PlatformSTL_h
+
+#include <memory>
+
+#define PLATFORM_EXPORT
+#ifndef CHECK
+#define CHECK(condition) ((void) 0)
+#endif
+#define DCHECK(condition) ((void) 0)
+#define NOTREACHED()
+#define DCHECK_EQ(i, j) DCHECK(i == j)
+#define DCHECK_GE(i, j) DCHECK(i >= j)
+#define DCHECK_LT(i, j) DCHECK(i < j)
+#define DCHECK_GT(i, j) DCHECK(i > j)
+template <typename T>
+inline void USE(T) { }
+
+#if defined(__APPLE__) && !defined(_LIBCPP_VERSION)
+
+namespace std {
+
+template <typename T1, typename T2>
+struct is_convertible {
+private:
+    struct True_ {
+        char x[2];
+    };
+    struct False_ {
+    };
+
+    static True_ helper(T2 const &);
+    static False_ helper(...);
+
+public:
+    static bool const value = (
+        sizeof(True_) == sizeof(is_convertible::helper(T1()))
+    );
+};
+
+template <bool, class T = void>
+struct enable_if {
+};
+
+template <class T>
+struct enable_if<true, T> {
+    typedef T type;
+};
+
+template<class T>
+struct remove_extent {
+    typedef T type;
+};
+
+template<class T>
+struct remove_extent<T[]> {
+    typedef T type;
+};
+
+template<class T, std::size_t N>
+struct remove_extent<T[N]> {
+    typedef T type;
+};
+
+typedef decltype(nullptr) nullptr_t;
+
+template<class T, T v>
+struct integral_constant {
+    static constexpr T value = v;
+    typedef T value_type;
+    typedef integral_constant type;
+    constexpr operator value_type() const noexcept { return value; }
+    constexpr value_type operator()() const noexcept { return value; }
+};
+
+typedef integral_constant<bool, true> true_type;
+typedef integral_constant<bool, false> false_type;
+
+template<class T>
+struct is_array : false_type {};
+
+template<class T>
+struct is_array<T[]> : true_type {};
+
+template<class T, std::size_t N>
+struct is_array<T[N]> : true_type {};
+
+template <typename T>
+struct OwnedPtrDeleter {
+    static void deletePtr(T* ptr)
+    {
+        static_assert(sizeof(T) > 0, "type must be complete");
+        delete ptr;
+    }
+};
+
+template <typename T>
+struct OwnedPtrDeleter<T[]> {
+    static void deletePtr(T* ptr)
+    {
+        static_assert(sizeof(T) > 0, "type must be complete");
+        delete[] ptr;
+    }
+};
+
+template <class T, int n>
+struct OwnedPtrDeleter<T[n]> {
+    static_assert(sizeof(T) < 0, "do not use array with size as type");
+};
+
+template <typename T> class unique_ptr {
+public:
+    typedef typename remove_extent<T>::type ValueType;
+    typedef ValueType* PtrType;
+
+    unique_ptr() : m_ptr(nullptr) {}
+    unique_ptr(std::nullptr_t) : m_ptr(nullptr) {}
+    unique_ptr(unique_ptr&&);
+    template <typename U, typename = typename enable_if<is_convertible<U*, T*>::value>::type> unique_ptr(unique_ptr<U>&&);
+
+    ~unique_ptr()
+    {
+        OwnedPtrDeleter<T>::deletePtr(m_ptr);
+        m_ptr = nullptr;
+    }
+
+    PtrType get() const { return m_ptr; }
+
+    void reset(PtrType = nullptr);
+    PtrType release();
+
+    ValueType& operator*() const { DCHECK(m_ptr); return *m_ptr; }
+    PtrType operator->() const { DCHECK(m_ptr); return m_ptr; }
+
+    ValueType& operator[](std::ptrdiff_t i) const;
+
+    bool operator!() const { return !m_ptr; }
+    explicit operator bool() const { return m_ptr; }
+
+    unique_ptr& operator=(std::nullptr_t) { reset(); return *this; }
+
+
+    unique_ptr& operator=(unique_ptr&&);
+    template <typename U> unique_ptr& operator=(unique_ptr<U>&&);
+
+    void swap(unique_ptr& o) { std::swap(m_ptr, o.m_ptr); }
+
+    static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); }
+
+    explicit unique_ptr(PtrType ptr) : m_ptr(ptr) {}
+
+private:
+
+    // We should never have two unique_ptrs for the same underlying object
+    // (otherwise we'll get double-destruction), so these equality operators
+    // should never be needed.
+    template <typename U> bool operator==(const unique_ptr<U>&) const
+    {
+        static_assert(!sizeof(U*), "unique_ptrs should never be equal");
+        return false;
+    }
+    template <typename U> bool operator!=(const unique_ptr<U>&) const
+    {
+        static_assert(!sizeof(U*), "unique_ptrs should never be equal");
+        return false;
+    }
+
+    PtrType m_ptr;
+};
+
+
+template <typename T> inline void unique_ptr<T>::reset(PtrType ptr)
+{
+    PtrType p = m_ptr;
+    m_ptr = ptr;
+    OwnedPtrDeleter<T>::deletePtr(p);
+}
+
+template <typename T> inline typename unique_ptr<T>::PtrType unique_ptr<T>::release()
+{
+    PtrType ptr = m_ptr;
+    m_ptr = nullptr;
+    return ptr;
+}
+
+template <typename T> inline typename unique_ptr<T>::ValueType& unique_ptr<T>::operator[](std::ptrdiff_t i) const
+{
+    static_assert(is_array<T>::value, "elements access is possible for arrays only");
+    DCHECK(m_ptr);
+    DCHECK_GE(i, 0);
+    return m_ptr[i];
+}
+
+template <typename T> inline unique_ptr<T>::unique_ptr(unique_ptr<T>&& o)
+    : m_ptr(o.release())
+{
+}
+
+template <typename T>
+template <typename U, typename> inline unique_ptr<T>::unique_ptr(unique_ptr<U>&& o)
+    : m_ptr(o.release())
+{
+    static_assert(!is_array<T>::value, "pointers to array must never be converted");
+}
+
+template <typename T> inline unique_ptr<T>& unique_ptr<T>::operator=(unique_ptr<T>&& o)
+{
+    PtrType ptr = m_ptr;
+    m_ptr = o.release();
+    DCHECK(!ptr || m_ptr != ptr);
+    OwnedPtrDeleter<T>::deletePtr(ptr);
+
+    return *this;
+}
+
+template <typename T>
+template <typename U> inline unique_ptr<T>& unique_ptr<T>::operator=(unique_ptr<U>&& o)
+{
+    static_assert(!is_array<T>::value, "pointers to array must never be converted");
+    PtrType ptr = m_ptr;
+    m_ptr = o.release();
+    DCHECK(!ptr || m_ptr != ptr);
+    OwnedPtrDeleter<T>::deletePtr(ptr);
+
+    return *this;
+}
+
+template <typename T> inline void swap(unique_ptr<T>& a, unique_ptr<T>& b)
+{
+    a.swap(b);
+}
+
+template <typename T, typename U> inline bool operator==(const unique_ptr<T>& a, U* b)
+{
+    return a.get() == b;
+}
+
+template <typename T, typename U> inline bool operator==(T* a, const unique_ptr<U>& b)
+{
+    return a == b.get();
+}
+
+template <typename T, typename U> inline bool operator!=(const unique_ptr<T>& a, U* b)
+{
+    return a.get() != b;
+}
+
+template <typename T, typename U> inline bool operator!=(T* a, const unique_ptr<U>& b)
+{
+    return a != b.get();
+}
+
+template <typename T> inline typename unique_ptr<T>::PtrType getPtr(const unique_ptr<T>& p)
+{
+    return p.get();
+}
+
+template <typename T>
+unique_ptr<T> move(unique_ptr<T>& ptr)
+{
+    return unique_ptr<T>(ptr.release());
+}
+
+}
+
+template <typename T>
+std::unique_ptr<T> wrapUnique(T* ptr)
+{
+    return std::unique_ptr<T>(ptr);
+}
+
+#endif // PlatformSTL_h