Apply clang-format with Chromium-style without column limit.

third_party/WebKit/Source/wtf/CheckedArithmetic.h

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 49 matching lines @@
  *  - Mixing signedness of operands is only supported for types narrower than
  *    64bits.
  *  - It does have a performance impact, so tight loops may want to be careful
  *    when using it.
  *
  */
 
 namespace WTF {
 
 enum class CheckedState {
-    DidOverflow,
-    DidNotOverflow
+  DidOverflow,
+  DidNotOverflow
 };
 
 class CrashOnOverflow {
-protected:
-    NO_RETURN_DUE_TO_CRASH void overflowed()
-    {
-        CRASH();
-    }
-
-    void clearOverflow() { }
-
-public:
-    bool hasOverflowed() const { return false; }
+ protected:
+  NO_RETURN_DUE_TO_CRASH void overflowed() {
+    CRASH();
+  }
+
+  void clearOverflow() {}
+
+ public:
+  bool hasOverflowed() const { return false; }
 };
 
 class RecordOverflow {
-protected:
-    RecordOverflow()
-        : m_overflowed(false)
-    {
-    }
-
-    void overflowed()
-    {
-        m_overflowed = true;
-    }
-
-    void clearOverflow()
-    {
-        m_overflowed = false;
-    }
-
-public:
-    bool hasOverflowed() const { return m_overflowed; }
-
-private:
-    unsigned char m_overflowed;
-};
-
-template <typename T, class OverflowHandler = CrashOnOverflow> class Checked;
-template <typename T> struct RemoveChecked;
-template <typename T> struct RemoveChecked<Checked<T>>;
-
-template <typename Target, typename Source, bool targetSigned = std::numeric_limits<Target>::is_signed, bool sourceSigned = std::numeric_limits<Source>::is_signed> struct BoundsChecker;
-template <typename Target, typename Source> struct BoundsChecker<Target, Source, false, false> {
-    static bool inBounds(Source value)
-    {
-        // Same signedness so implicit type conversion will always increase precision
-        // to widest type
-        return value <= std::numeric_limits<Target>::max();
-    }
-};
-
-template <typename Target, typename Source> struct BoundsChecker<Target, Source, true, true> {
-    static bool inBounds(Source value)
-    {
-        // Same signedness so implicit type conversion will always increase precision
-        // to widest type
-        return std::numeric_limits<Target>::min() <= value && value <= std::numeric_limits<Target>::max();
-    }
-};
-
-template <typename Target, typename Source> struct BoundsChecker<Target, Source, false, true> {
-    static bool inBounds(Source value)
-    {
-        // Target is unsigned so any value less than zero is clearly unsafe
-        if (value < 0)
-            return false;
-        // If our (unsigned) Target is the same or greater width we can
-        // convert value to type Target without losing precision
-        if (sizeof(Target) >= sizeof(Source))
-            return static_cast<Target>(value) <= std::numeric_limits<Target>::max();
-        // The signed Source type has greater precision than the target so
-        // max(Target) -> Source will widen.
-        return value <= static_cast<Source>(std::numeric_limits<Target>::max());
-    }
-};
-
-template <typename Target, typename Source> struct BoundsChecker<Target, Source, true, false> {
-    static bool inBounds(Source value)
-    {
-        // Signed target with an unsigned source
-        if (sizeof(Target) <= sizeof(Source))
-            return value <= static_cast<Source>(std::numeric_limits<Target>::max());
-        // Target is Wider than Source so we're guaranteed to fit any value in
-        // unsigned Source
-        return true;
-    }
-};
-
-template <typename Target, typename Source, bool CanElide = IsSameType<Target, Source>::value || (sizeof(Target) > sizeof(Source)) > struct BoundsCheckElider;
-template <typename Target, typename Source> struct BoundsCheckElider<Target, Source, true> {
-    static bool inBounds(Source) { return true; }
-};
-template <typename Target, typename Source> struct BoundsCheckElider<Target, Source, false> : public BoundsChecker<Target, Source> {
-};
-
-template <typename Target, typename Source> static inline bool isInBounds(Source value)
-{
-    return BoundsCheckElider<Target, Source>::inBounds(value);
-}
-
-template <typename T> struct RemoveChecked {
-    typedef T CleanType;
-    static const CleanType DefaultValue = 0;
-};
-
-template <typename T> struct RemoveChecked<Checked<T, CrashOnOverflow>> {
-    typedef typename RemoveChecked<T>::CleanType CleanType;
-    static const CleanType DefaultValue = 0;
-};
-
-template <typename T> struct RemoveChecked<Checked<T, RecordOverflow>> {
-    typedef typename RemoveChecked<T>::CleanType CleanType;
-    static const CleanType DefaultValue = 0;
+ protected:
+  RecordOverflow()
+      : m_overflowed(false) {
+  }
+
+  void overflowed() {
+    m_overflowed = true;
+  }
+
+  void clearOverflow() {
+    m_overflowed = false;
+  }
+
+ public:
+  bool hasOverflowed() const { return m_overflowed; }
+
+ private:
+  unsigned char m_overflowed;
+};
+
+template <typename T, class OverflowHandler = CrashOnOverflow>
+class Checked;
+template <typename T>
+struct RemoveChecked;
+template <typename T>
+struct RemoveChecked<Checked<T>>;
+
+template <typename Target, typename Source, bool targetSigned = std::numeric_limits<Target>::is_signed, bool sourceSigned = std::numeric_limits<Source>::is_signed>
+struct BoundsChecker;
+template <typename Target, typename Source>
+struct BoundsChecker<Target, Source, false, false> {
+  static bool inBounds(Source value) {
+    // Same signedness so implicit type conversion will always increase precision
+    // to widest type
+    return value <= std::numeric_limits<Target>::max();
+  }
+};
+
+template <typename Target, typename Source>
+struct BoundsChecker<Target, Source, true, true> {
+  static bool inBounds(Source value) {
+    // Same signedness so implicit type conversion will always increase precision
+    // to widest type
+    return std::numeric_limits<Target>::min() <= value && value <= std::numeric_limits<Target>::max();
+  }
+};
+
+template <typename Target, typename Source>
+struct BoundsChecker<Target, Source, false, true> {
+  static bool inBounds(Source value) {
+    // Target is unsigned so any value less than zero is clearly unsafe
+    if (value < 0)
+      return false;
+    // If our (unsigned) Target is the same or greater width we can
+    // convert value to type Target without losing precision
+    if (sizeof(Target) >= sizeof(Source))
+      return static_cast<Target>(value) <= std::numeric_limits<Target>::max();
+    // The signed Source type has greater precision than the target so
+    // max(Target) -> Source will widen.
+    return value <= static_cast<Source>(std::numeric_limits<Target>::max());
+  }
+};
+
+template <typename Target, typename Source>
+struct BoundsChecker<Target, Source, true, false> {
+  static bool inBounds(Source value) {
+    // Signed target with an unsigned source
+    if (sizeof(Target) <= sizeof(Source))
+      return value <= static_cast<Source>(std::numeric_limits<Target>::max());
+    // Target is Wider than Source so we're guaranteed to fit any value in
+    // unsigned Source
+    return true;
+  }
+};
+
+template <typename Target, typename Source, bool CanElide = IsSameType<Target, Source>::value || (sizeof(Target) > sizeof(Source))>
+struct BoundsCheckElider;
+template <typename Target, typename Source>
+struct BoundsCheckElider<Target, Source, true> {
+  static bool inBounds(Source) { return true; }
+};
+template <typename Target, typename Source>
+struct BoundsCheckElider<Target, Source, false> : public BoundsChecker<Target, Source> {
+};
+
+template <typename Target, typename Source>
+static inline bool isInBounds(Source value) {
+  return BoundsCheckElider<Target, Source>::inBounds(value);
+}
+
+template <typename T>
+struct RemoveChecked {
+  typedef T CleanType;
+  static const CleanType DefaultValue = 0;
+};
+
+template <typename T>
+struct RemoveChecked<Checked<T, CrashOnOverflow>> {
+  typedef typename RemoveChecked<T>::CleanType CleanType;
+  static const CleanType DefaultValue = 0;
+};
+
+template <typename T>
+struct RemoveChecked<Checked<T, RecordOverflow>> {
+  typedef typename RemoveChecked<T>::CleanType CleanType;
+  static const CleanType DefaultValue = 0;
 };
 
 // The ResultBase and SignednessSelector are used to workaround typeof not being
 // available in MSVC
-template <typename U, typename V, bool uIsBigger = (sizeof(U) > sizeof(V)), bool sameSize = (sizeof(U) == sizeof(V))> struct ResultBase;
-template <typename U, typename V> struct ResultBase<U, V, true, false> {
-    typedef U ResultType;
-};
-
-template <typename U, typename V> struct ResultBase<U, V, false, false> {
-    typedef V ResultType;
-};
-
-template <typename U> struct ResultBase<U, U, false, true> {
-    typedef U ResultType;
-};
-
-template <typename U, typename V, bool uIsSigned = std::numeric_limits<U>::is_signed, bool vIsSigned = std::numeric_limits<V>::is_signed> struct SignednessSelector;
-template <typename U, typename V> struct SignednessSelector<U, V, true, true> {
-    typedef U ResultType;
-};
-
-template <typename U, typename V> struct SignednessSelector<U, V, false, false> {
-    typedef U ResultType;
-};
-
-template <typename U, typename V> struct SignednessSelector<U, V, true, false> {
-    typedef V ResultType;
-};
-
-template <typename U, typename V> struct SignednessSelector<U, V, false, true> {
-    typedef U ResultType;
-};
-
-template <typename U, typename V> struct ResultBase<U, V, false, true> {
-    typedef typename SignednessSelector<U, V>::ResultType ResultType;
-};
-
-template <typename U, typename V> struct Result : ResultBase<typename RemoveChecked<U>::CleanType, typename RemoveChecked<V>::CleanType> {
-};
-
-template <typename LHS, typename RHS, typename ResultType = typename Result<LHS, RHS>::ResultType,
-    bool lhsSigned = std::numeric_limits<LHS>::is_signed, bool rhsSigned = std::numeric_limits<RHS>::is_signed> struct ArithmeticOperations;
-
-template <typename LHS, typename RHS, typename ResultType> struct ArithmeticOperations<LHS, RHS, ResultType, true, true> {
-    // LHS and RHS are signed types
-
-    // Helper function
-    static inline bool signsMatch(LHS lhs, RHS rhs)
-    {
-        return (lhs ^ rhs) >= 0;
+template <typename U, typename V, bool uIsBigger = (sizeof(U) > sizeof(V)), bool sameSize = (sizeof(U) == sizeof(V))>
+struct ResultBase;
+template <typename U, typename V>
+struct ResultBase<U, V, true, false> {
+  typedef U ResultType;
+};
+
+template <typename U, typename V>
+struct ResultBase<U, V, false, false> {
+  typedef V ResultType;
+};
+
+template <typename U>
+struct ResultBase<U, U, false, true> {
+  typedef U ResultType;
+};
+
+template <typename U, typename V, bool uIsSigned = std::numeric_limits<U>::is_signed, bool vIsSigned = std::numeric_limits<V>::is_signed>
+struct SignednessSelector;
+template <typename U, typename V>
+struct SignednessSelector<U, V, true, true> {
+  typedef U ResultType;
+};
+
+template <typename U, typename V>
+struct SignednessSelector<U, V, false, false> {
+  typedef U ResultType;
+};
+
+template <typename U, typename V>
+struct SignednessSelector<U, V, true, false> {
+  typedef V ResultType;
+};
+
+template <typename U, typename V>
+struct SignednessSelector<U, V, false, true> {
+  typedef U ResultType;
+};
+
+template <typename U, typename V>
+struct ResultBase<U, V, false, true> {
+  typedef typename SignednessSelector<U, V>::ResultType ResultType;
+};
+
+template <typename U, typename V>
+struct Result : ResultBase<typename RemoveChecked<U>::CleanType, typename RemoveChecked<V>::CleanType> {
+};
+
+template <typename LHS, typename RHS, typename ResultType = typename Result<LHS, RHS>::ResultType, bool lhsSigned = std::numeric_limits<LHS>::is_signed, bool rhsSigned = std::numeric_limits<RHS>::is_signed>
+struct ArithmeticOperations;
+
+template <typename LHS, typename RHS, typename ResultType>
+struct ArithmeticOperations<LHS, RHS, ResultType, true, true> {
+  // LHS and RHS are signed types
+
+  // Helper function
+  static inline bool signsMatch(LHS lhs, RHS rhs) {
+    return (lhs ^ rhs) >= 0;
+  }
+
+  static inline bool add(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN {
+    if (signsMatch(lhs, rhs)) {
+      if (lhs >= 0) {
+        if ((std::numeric_limits<ResultType>::max() - rhs) < lhs)
+          return false;
+      } else {
+        ResultType temp = lhs - std::numeric_limits<ResultType>::min();
+        if (rhs < -temp)
+          return false;
+      }
+    }  // if the signs do not match this operation can't overflow
+    result = static_cast<ResultType>(lhs + rhs);
+    return true;
+  }
+
+  static inline bool sub(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN {
+    if (!signsMatch(lhs, rhs)) {
+      if (lhs >= 0) {
+        if (lhs > std::numeric_limits<ResultType>::max() + rhs)
+          return false;
+      } else {
+        if (rhs > std::numeric_limits<ResultType>::max() + lhs)
+          return false;
+      }
+    }  // if the signs match this operation can't overflow
+    result = static_cast<ResultType>(lhs - rhs);
+    return true;
+  }
+
+  static inline bool multiply(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN {
+    if (signsMatch(lhs, rhs)) {
+      if (lhs >= 0) {
+        if (lhs && (std::numeric_limits<ResultType>::max() / lhs) < rhs)
+          return false;
+      } else {
+        if (static_cast<ResultType>(lhs) == std::numeric_limits<ResultType>::min() || static_cast<ResultType>(rhs) == std::numeric_limits<ResultType>::min())
+          return false;
+        if ((std::numeric_limits<ResultType>::max() / -lhs) < -rhs)
+          return false;
+      }
+    } else {
+      if (lhs < 0) {
+        if (rhs && lhs < (std::numeric_limits<ResultType>::min() / rhs))
+          return false;
+      } else {
+        if (lhs && rhs < (std::numeric_limits<ResultType>::min() / lhs))
+          return false;
+      }
     }
-
-    static inline bool add(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN
-    {
-        if (signsMatch(lhs, rhs)) {
-            if (lhs >= 0) {
-                if ((std::numeric_limits<ResultType>::max() - rhs) < lhs)
-                    return false;
-            } else {
-                ResultType temp = lhs - std::numeric_limits<ResultType>::min();
-                if (rhs < -temp)
-                    return false;
-            }
-        } // if the signs do not match this operation can't overflow
-        result = static_cast<ResultType>(lhs + rhs);
-        return true;
+    result = static_cast<ResultType>(lhs * rhs);
+    return true;
+  }
+
+  static inline bool equals(LHS lhs, RHS rhs) { return lhs == rhs; }
+};
+
+template <typename LHS, typename RHS, typename ResultType>
+struct ArithmeticOperations<LHS, RHS, ResultType, false, false> {
+  // LHS and RHS are unsigned types so bounds checks are nice and easy
+  static inline bool add(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN {
+    ResultType temp = lhs + rhs;
+    if (temp < lhs)
+      return false;
+    result = temp;
+    return true;
+  }
+
+  static inline bool sub(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN {
+    ResultType temp = lhs - rhs;
+    if (temp > lhs)
+      return false;
+    result = temp;
+    return true;
+  }
+
+  static inline bool multiply(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN {
+    if (!lhs || !rhs) {
+      result = 0;
+      return true;
     }
-
-    static inline bool sub(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN
-    {
-        if (!signsMatch(lhs, rhs)) {
-            if (lhs >= 0) {
-                if (lhs > std::numeric_limits<ResultType>::max() + rhs)
-                    return false;
-            } else {
-                if (rhs > std::numeric_limits<ResultType>::max() + lhs)
-                    return false;
-            }
-        } // if the signs match this operation can't overflow
-        result = static_cast<ResultType>(lhs - rhs);
-        return true;
-    }
-
-    static inline bool multiply(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN
-    {
-        if (signsMatch(lhs, rhs)) {
-            if (lhs >= 0) {
-                if (lhs && (std::numeric_limits<ResultType>::max() / lhs) < rhs)
-                    return false;
-            } else {
-                if (static_cast<ResultType>(lhs) == std::numeric_limits<ResultType>::min() || static_cast<ResultType>(rhs) == std::numeric_limits<ResultType>::min())
-                    return false;
-                if ((std::numeric_limits<ResultType>::max() / -lhs) < -rhs)
-                    return false;
-            }
-        } else {
-            if (lhs < 0) {
-                if (rhs && lhs < (std::numeric_limits<ResultType>::min() / rhs))
-                    return false;
-            } else {
-                if (lhs && rhs < (std::numeric_limits<ResultType>::min() / lhs))
-                    return false;
-            }
-        }
-        result = static_cast<ResultType>(lhs * rhs);
-        return true;
-    }
-
-    static inline bool equals(LHS lhs, RHS rhs) { return lhs == rhs; }
-
-};
-
-template <typename LHS, typename RHS, typename ResultType> struct ArithmeticOperations<LHS, RHS, ResultType, false, false> {
-    // LHS and RHS are unsigned types so bounds checks are nice and easy
-    static inline bool add(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN
-    {
-        ResultType temp = lhs + rhs;
-        if (temp < lhs)
-            return false;
-        result = temp;
-        return true;
-    }
-
-    static inline bool sub(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN
-    {
-        ResultType temp = lhs - rhs;
-        if (temp > lhs)
-            return false;
-        result = temp;
-        return true;
-    }
-
-    static inline bool multiply(LHS lhs, RHS rhs, ResultType& result) WARN_UNUSED_RETURN
-    {
-        if (!lhs || !rhs) {
-            result = 0;
-            return true;
-        }
-        if (std::numeric_limits<ResultType>::max() / lhs < rhs)
-            return false;
-        result = lhs * rhs;
-        return true;
-    }
-
-    static inline bool equals(LHS lhs, RHS rhs) { return lhs == rhs; }
-
-};
-
-template <typename ResultType> struct ArithmeticOperations<int, unsigned, ResultType, true, false> {
-    static inline bool add(int64_t lhs, int64_t rhs, ResultType& result)
-    {
-        int64_t temp = lhs + rhs;
-        if (temp < std::numeric_limits<ResultType>::min())
-            return false;
-        if (temp > std::numeric_limits<ResultType>::max())
-            return false;
-        result = static_cast<ResultType>(temp);
-        return true;
-    }
-
-    static inline bool sub(int64_t lhs, int64_t rhs, ResultType& result)
-    {
-        int64_t temp = lhs - rhs;
-        if (temp < std::numeric_limits<ResultType>::min())
-            return false;
-        if (temp > std::numeric_limits<ResultType>::max())
-            return false;
-        result = static_cast<ResultType>(temp);
-        return true;
-    }
-
-    static inline bool multiply(int64_t lhs, int64_t rhs, ResultType& result)
-    {
-        int64_t temp = lhs * rhs;
-        if (temp < std::numeric_limits<ResultType>::min())
-            return false;
-        if (temp > std::numeric_limits<ResultType>::max())
-            return false;
-        result = static_cast<ResultType>(temp);
-        return true;
-    }
-
-    static inline bool equals(int lhs, unsigned rhs)
-    {
-        return static_cast<int64_t>(lhs) == static_cast<int64_t>(rhs);
-    }
-};
-
-template <typename ResultType> struct ArithmeticOperations<unsigned, int, ResultType, false, true> {
-    static inline bool add(int64_t lhs, int64_t rhs, ResultType& result)
-    {
-        return ArithmeticOperations<int, unsigned, ResultType>::add(rhs, lhs, result);
-    }
-
-    static inline bool sub(int64_t lhs, int64_t rhs, ResultType& result)
-    {
-        return ArithmeticOperations<int, unsigned, ResultType>::sub(lhs, rhs, result);
-    }
-
-    static inline bool multiply(int64_t lhs, int64_t rhs, ResultType& result)
-    {
-        return ArithmeticOperations<int, unsigned, ResultType>::multiply(rhs, lhs, result);
-    }
-
-    static inline bool equals(unsigned lhs, int rhs)
-    {
-        return ArithmeticOperations<int, unsigned, ResultType>::equals(rhs, lhs);
-    }
-};
-
-template <typename U, typename V, typename R> static inline bool safeAdd(U lhs, V rhs, R& result)
-{
-    return ArithmeticOperations<U, V, R>::add(lhs, rhs, result);
-}
-
-template <typename U, typename V, typename R> static inline bool safeSub(U lhs, V rhs, R& result)
-{
-    return ArithmeticOperations<U, V, R>::sub(lhs, rhs, result);
-}
-
-template <typename U, typename V, typename R> static inline bool safeMultiply(U lhs, V rhs, R& result)
-{
-    return ArithmeticOperations<U, V, R>::multiply(lhs, rhs, result);
-}
-
-template <typename U, typename V> static inline bool safeEquals(U lhs, V rhs)
-{
-    return ArithmeticOperations<U, V>::equals(lhs, rhs);
+    if (std::numeric_limits<ResultType>::max() / lhs < rhs)
+      return false;
+    result = lhs * rhs;
+    return true;
+  }
+
+  static inline bool equals(LHS lhs, RHS rhs) { return lhs == rhs; }
+};
+
+template <typename ResultType>
+struct ArithmeticOperations<int, unsigned, ResultType, true, false> {
+  static inline bool add(int64_t lhs, int64_t rhs, ResultType& result) {
+    int64_t temp = lhs + rhs;
+    if (temp < std::numeric_limits<ResultType>::min())
+      return false;
+    if (temp > std::numeric_limits<ResultType>::max())
+      return false;
+    result = static_cast<ResultType>(temp);
+    return true;
+  }
+
+  static inline bool sub(int64_t lhs, int64_t rhs, ResultType& result) {
+    int64_t temp = lhs - rhs;
+    if (temp < std::numeric_limits<ResultType>::min())
+      return false;
+    if (temp > std::numeric_limits<ResultType>::max())
+      return false;
+    result = static_cast<ResultType>(temp);
+    return true;
+  }
+
+  static inline bool multiply(int64_t lhs, int64_t rhs, ResultType& result) {
+    int64_t temp = lhs * rhs;
+    if (temp < std::numeric_limits<ResultType>::min())
+      return false;
+    if (temp > std::numeric_limits<ResultType>::max())
+      return false;
+    result = static_cast<ResultType>(temp);
+    return true;
+  }
+
+  static inline bool equals(int lhs, unsigned rhs) {
+    return static_cast<int64_t>(lhs) == static_cast<int64_t>(rhs);
+  }
+};
+
+template <typename ResultType>
+struct ArithmeticOperations<unsigned, int, ResultType, false, true> {
+  static inline bool add(int64_t lhs, int64_t rhs, ResultType& result) {
+    return ArithmeticOperations<int, unsigned, ResultType>::add(rhs, lhs, result);
+  }
+
+  static inline bool sub(int64_t lhs, int64_t rhs, ResultType& result) {
+    return ArithmeticOperations<int, unsigned, ResultType>::sub(lhs, rhs, result);
+  }
+
+  static inline bool multiply(int64_t lhs, int64_t rhs, ResultType& result) {
+    return ArithmeticOperations<int, unsigned, ResultType>::multiply(rhs, lhs, result);
+  }
+
+  static inline bool equals(unsigned lhs, int rhs) {
+    return ArithmeticOperations<int, unsigned, ResultType>::equals(rhs, lhs);
+  }
+};
+
+template <typename U, typename V, typename R>
+static inline bool safeAdd(U lhs, V rhs, R& result) {
+  return ArithmeticOperations<U, V, R>::add(lhs, rhs, result);
+}
+
+template <typename U, typename V, typename R>
+static inline bool safeSub(U lhs, V rhs, R& result) {
+  return ArithmeticOperations<U, V, R>::sub(lhs, rhs, result);
+}
+
+template <typename U, typename V, typename R>
+static inline bool safeMultiply(U lhs, V rhs, R& result) {
+  return ArithmeticOperations<U, V, R>::multiply(lhs, rhs, result);
+}
+
+template <typename U, typename V>
+static inline bool safeEquals(U lhs, V rhs) {
+  return ArithmeticOperations<U, V>::equals(lhs, rhs);
 }
 
 enum ResultOverflowedTag { ResultOverflowed };
 
-template <typename T, class OverflowHandler> class Checked : public OverflowHandler {
-public:
-    template <typename _T, class _OverflowHandler> friend class Checked;
-    Checked()
-        : m_value(0)
-    {
-    }
-
-    Checked(ResultOverflowedTag)
-        : m_value(0)
-    {
-        this->overflowed();
-    }
-
-    template <typename U> Checked(U value)
-    {
-        if (!isInBounds<T>(value))
-            this->overflowed();
-        m_value = static_cast<T>(value);
-    }
-
-    template <typename V> Checked(const Checked<T, V>& rhs)
-        : m_value(rhs.m_value)
-    {
-        if (rhs.hasOverflowed())
-            this->overflowed();
-    }
-
-    template <typename U> Checked(const Checked<U, OverflowHandler>& rhs)
-        : OverflowHandler(rhs)
-    {
-        if (!isInBounds<T>(rhs.m_value))
-            this->overflowed();
-        m_value = static_cast<T>(rhs.m_value);
-    }
-
-    template <typename U, typename V> Checked(const Checked<U, V>& rhs)
-    {
-        if (rhs.hasOverflowed())
-            this->overflowed();
-        if (!isInBounds<T>(rhs.m_value))
-            this->overflowed();
-        m_value = static_cast<T>(rhs.m_value);
-    }
-
-    const Checked& operator=(Checked rhs)
-    {
-        this->clearOverflow();
-        if (rhs.hasOverflowed())
-            this->overflowed();
-        m_value = static_cast<T>(rhs.m_value);
-        return *this;
-    }
-
-    template <typename U> const Checked& operator=(U value)
-    {
-        return *this = Checked(value);
-    }
-
-    template <typename U, typename V> const Checked& operator=(const Checked<U, V>& rhs)
-    {
-        return *this = Checked(rhs);
-    }
-
-    // prefix
-    const Checked& operator++()
-    {
-        if (m_value == std::numeric_limits<T>::max())
-            this->overflowed();
-        m_value++;
-        return *this;
-    }
-
-    const Checked& operator--()
-    {
-        if (m_value == std::numeric_limits<T>::min())
-            this->overflowed();
-        m_value--;
-        return *this;
-    }
-
-    // postfix operators
-    const Checked operator++(int)
-    {
-        if (m_value == std::numeric_limits<T>::max())
-            this->overflowed();
-        return Checked(m_value++);
-    }
-
-    const Checked operator--(int)
-    {
-        if (m_value == std::numeric_limits<T>::min())
-            this->overflowed();
-        return Checked(m_value--);
-    }
-
-    // Boolean operators
-    bool operator!() const
-    {
-        if (this->hasOverflowed())
-            CRASH();
-        return !m_value;
-    }
-
-    typedef void* (Checked::*UnspecifiedBoolType);
-    operator UnspecifiedBoolType*() const
-    {
-        if (this->hasOverflowed())
-            CRASH();
-        return (m_value) ? reinterpret_cast<UnspecifiedBoolType*>(1) : 0;
-    }
-
-    // Value accessors. unsafeGet() will crash if there's been an overflow.
-    T unsafeGet() const
-    {
-        if (this->hasOverflowed())
-            CRASH();
-        return m_value;
-    }
-
-    inline CheckedState safeGet(T& value) const WARN_UNUSED_RETURN
-    {
-        value = m_value;
-        if (this->hasOverflowed())
-            return CheckedState::DidOverflow;
-        return CheckedState::DidNotOverflow;
-    }
-
-    // Mutating assignment
-    template <typename U> const Checked operator+=(U rhs)
-    {
-        if (!safeAdd(m_value, rhs, m_value))
-            this->overflowed();
-        return *this;
-    }
-
-    template <typename U> const Checked operator-=(U rhs)
-    {
-        if (!safeSub(m_value, rhs, m_value))
-            this->overflowed();
-        return *this;
-    }
-
-    template <typename U> const Checked operator*=(U rhs)
-    {
-        if (!safeMultiply(m_value, rhs, m_value))
-            this->overflowed();
-        return *this;
-    }
-
-    const Checked operator*=(double rhs)
-    {
-        double result = rhs * m_value;
-        // Handle +/- infinity and NaN
-        if (!(std::numeric_limits<T>::min() <= result && std::numeric_limits<T>::max() >= result))
-            this->overflowed();
-        m_value = (T)result;
-        return *this;
-    }
-
-    const Checked operator*=(float rhs)
-    {
-        return *this *= (double)rhs;
-    }
-
-    template <typename U, typename V> const Checked operator+=(Checked<U, V> rhs)
-    {
-        if (rhs.hasOverflowed())
-            this->overflowed();
-        return *this += rhs.m_value;
-    }
-
-    template <typename U, typename V> const Checked operator-=(Checked<U, V> rhs)
-    {
-        if (rhs.hasOverflowed())
-            this->overflowed();
-        return *this -= rhs.m_value;
-    }
-
-    template <typename U, typename V> const Checked operator*=(Checked<U, V> rhs)
-    {
-        if (rhs.hasOverflowed())
-            this->overflowed();
-        return *this *= rhs.m_value;
-    }
-
-    // Equality comparisons
-    template <typename V> bool operator==(Checked<T, V> rhs)
-    {
-        return unsafeGet() == rhs.unsafeGet();
-    }
-
-    template <typename U> bool operator==(U rhs)
-    {
-        if (this->hasOverflowed())
-            this->overflowed();
-        return safeEquals(m_value, rhs);
-    }
-
-    template <typename U, typename V> const Checked operator==(Checked<U, V> rhs)
-    {
-        return unsafeGet() == Checked(rhs.unsafeGet());
-    }
-
-    template <typename U> bool operator!=(U rhs)
-    {
-        return !(*this == rhs);
-    }
-
-private:
-    // Disallow implicit conversion of floating point to integer types
-    Checked(float);
-    Checked(double);
-    void operator=(float);
-    void operator=(double);
-    void operator+=(float);
-    void operator+=(double);
-    void operator-=(float);
-    void operator-=(double);
-    T m_value;
-};
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator+(Checked<U, OverflowHandler> lhs, Checked<V, OverflowHandler> rhs)
-{
-    U x = 0;
-    V y = 0;
-    bool overflowed = lhs.safeGet(x) == CheckedState::DidOverflow || rhs.safeGet(y) == CheckedState::DidOverflow;
-    typename Result<U, V>::ResultType result = 0;
-    overflowed |= !safeAdd(x, y, result);
-    if (overflowed)
-        return ResultOverflowed;
-    return result;
-}
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator-(Checked<U, OverflowHandler> lhs, Checked<V, OverflowHandler> rhs)
-{
-    U x = 0;
-    V y = 0;
-    bool overflowed = lhs.safeGet(x) == CheckedState::DidOverflow || rhs.safeGet(y) == CheckedState::DidOverflow;
-    typename Result<U, V>::ResultType result = 0;
-    overflowed |= !safeSub(x, y, result);
-    if (overflowed)
-        return ResultOverflowed;
-    return result;
-}
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator*(Checked<U, OverflowHandler> lhs, Checked<V, OverflowHandler> rhs)
-{
-    U x = 0;
-    V y = 0;
-    bool overflowed = lhs.safeGet(x) == CheckedState::DidOverflow || rhs.safeGet(y) == CheckedState::DidOverflow;
-    typename Result<U, V>::ResultType result = 0;
-    overflowed |= !safeMultiply(x, y, result);
-    if (overflowed)
-        return ResultOverflowed;
-    return result;
-}
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator+(Checked<U, OverflowHandler> lhs, V rhs)
-{
-    return lhs + Checked<V, OverflowHandler>(rhs);
-}
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator-(Checked<U, OverflowHandler> lhs, V rhs)
-{
-    return lhs - Checked<V, OverflowHandler>(rhs);
-}
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator*(Checked<U, OverflowHandler> lhs, V rhs)
-{
-    return lhs * Checked<V, OverflowHandler>(rhs);
-}
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator+(U lhs, Checked<V, OverflowHandler> rhs)
-{
-    return Checked<U, OverflowHandler>(lhs) + rhs;
-}
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator-(U lhs, Checked<V, OverflowHandler> rhs)
-{
-    return Checked<U, OverflowHandler>(lhs) - rhs;
-}
-
-template <typename U, typename V, typename OverflowHandler> static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator*(U lhs, Checked<V, OverflowHandler> rhs)
-{
-    return Checked<U, OverflowHandler>(lhs) * rhs;
-}
-
+template <typename T, class OverflowHandler>
+class Checked : public OverflowHandler {
+ public:
+  template <typename _T, class _OverflowHandler>
+  friend class Checked;
+  Checked()
+      : m_value(0) {
+  }
+
+  Checked(ResultOverflowedTag)
+      : m_value(0) {
+    this->overflowed();
+  }
+
+  template <typename U>
+  Checked(U value) {
+    if (!isInBounds<T>(value))
+      this->overflowed();
+    m_value = static_cast<T>(value);
+  }
+
+  template <typename V>
+  Checked(const Checked<T, V>& rhs)
+      : m_value(rhs.m_value) {
+    if (rhs.hasOverflowed())
+      this->overflowed();
+  }
+
+  template <typename U>
+  Checked(const Checked<U, OverflowHandler>& rhs)
+      : OverflowHandler(rhs) {
+    if (!isInBounds<T>(rhs.m_value))
+      this->overflowed();
+    m_value = static_cast<T>(rhs.m_value);
+  }
+
+  template <typename U, typename V>
+  Checked(const Checked<U, V>& rhs) {
+    if (rhs.hasOverflowed())
+      this->overflowed();
+    if (!isInBounds<T>(rhs.m_value))
+      this->overflowed();
+    m_value = static_cast<T>(rhs.m_value);
+  }
+
+  const Checked& operator=(Checked rhs) {
+    this->clearOverflow();
+    if (rhs.hasOverflowed())
+      this->overflowed();
+    m_value = static_cast<T>(rhs.m_value);
+    return *this;
+  }
+
+  template <typename U>
+  const Checked& operator=(U value) {
+    return * this = Checked(value);
+  }
+
+  template <typename U, typename V>
+  const Checked& operator=(const Checked<U, V>& rhs) {
+    return * this = Checked(rhs);
+  }
+
+  // prefix
+  const Checked& operator++() {
+    if (m_value == std::numeric_limits<T>::max())
+      this->overflowed();
+    m_value++;
+    return *this;
+  }
+
+  const Checked& operator--() {
+    if (m_value == std::numeric_limits<T>::min())
+      this->overflowed();
+    m_value--;
+    return *this;
+  }
+
+  // postfix operators
+  const Checked operator++(int) {
+    if (m_value == std::numeric_limits<T>::max())
+      this->overflowed();
+    return Checked(m_value++);
+  }
+
+  const Checked operator--(int) {
+    if (m_value == std::numeric_limits<T>::min())
+      this->overflowed();
+    return Checked(m_value--);
+  }
+
+  // Boolean operators
+  bool operator!() const {
+    if (this->hasOverflowed())
+      CRASH();
+    return !m_value;
+  }
+
+  typedef void*(Checked::*UnspecifiedBoolType);
+  operator UnspecifiedBoolType*() const {
+    if (this->hasOverflowed())
+      CRASH();
+    return (m_value) ? reinterpret_cast<UnspecifiedBoolType*>(1) : 0;
+  }
+
+  // Value accessors. unsafeGet() will crash if there's been an overflow.
+  T unsafeGet() const {
+    if (this->hasOverflowed())
+      CRASH();
+    return m_value;
+  }
+
+  inline CheckedState safeGet(T& value) const WARN_UNUSED_RETURN {
+    value = m_value;
+    if (this->hasOverflowed())
+      return CheckedState::DidOverflow;
+    return CheckedState::DidNotOverflow;
+  }
+
+  // Mutating assignment
+  template <typename U>
+  const Checked operator+=(U rhs) {
+    if (!safeAdd(m_value, rhs, m_value))
+      this->overflowed();
+    return *this;
+  }
+
+  template <typename U>
+  const Checked operator-=(U rhs) {
+    if (!safeSub(m_value, rhs, m_value))
+      this->overflowed();
+    return *this;
+  }
+
+  template <typename U>
+  const Checked operator*=(U rhs) {
+    if (!safeMultiply(m_value, rhs, m_value))
+      this->overflowed();
+    return *this;
+  }
+
+  const Checked operator*=(double rhs) {
+    double result = rhs * m_value;
+    // Handle +/- infinity and NaN
+    if (!(std::numeric_limits<T>::min() <= result && std::numeric_limits<T>::max() >= result))
+      this->overflowed();
+    m_value = (T)result;
+    return *this;
+  }
+
+  const Checked operator*=(float rhs) {
+    return * this *= (double)rhs;
+  }
+
+  template <typename U, typename V>
+  const Checked operator+=(Checked<U, V> rhs) {
+    if (rhs.hasOverflowed())
+      this->overflowed();
+    return * this += rhs.m_value;
+  }
+
+  template <typename U, typename V>
+  const Checked operator-=(Checked<U, V> rhs) {
+    if (rhs.hasOverflowed())
+      this->overflowed();
+    return * this -= rhs.m_value;
+  }
+
+  template <typename U, typename V>
+  const Checked operator*=(Checked<U, V> rhs) {
+    if (rhs.hasOverflowed())
+      this->overflowed();
+    return * this *= rhs.m_value;
+  }
+
+  // Equality comparisons
+  template <typename V>
+  bool operator==(Checked<T, V> rhs) {
+    return unsafeGet() == rhs.unsafeGet();
+  }
+
+  template <typename U>
+  bool operator==(U rhs) {
+    if (this->hasOverflowed())
+      this->overflowed();
+    return safeEquals(m_value, rhs);
+  }
+
+  template <typename U, typename V>
+  const Checked operator==(Checked<U, V> rhs) {
+    return unsafeGet() == Checked(rhs.unsafeGet());
+  }
+
+  template <typename U>
+  bool operator!=(U rhs) {
+    return !(*this == rhs);
+  }
+
+ private:
+  // Disallow implicit conversion of floating point to integer types
+  Checked(float);
+  Checked(double);
+  void operator=(float);
+  void operator=(double);
+  void operator+=(float);
+  void operator+=(double);
+  void operator-=(float);
+  void operator-=(double);
+  T m_value;
+};
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator+(Checked<U, OverflowHandler> lhs, Checked<V, OverflowHandler> rhs) {
+  U x = 0;
+  V y = 0;
+  bool overflowed = lhs.safeGet(x) == CheckedState::DidOverflow || rhs.safeGet(y) == CheckedState::DidOverflow;
+  typename Result<U, V>::ResultType result = 0;
+  overflowed |= !safeAdd(x, y, result);
+  if (overflowed)
+    return ResultOverflowed;
+  return result;
+}
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator-(Checked<U, OverflowHandler> lhs, Checked<V, OverflowHandler> rhs) {
+  U x = 0;
+  V y = 0;
+  bool overflowed = lhs.safeGet(x) == CheckedState::DidOverflow || rhs.safeGet(y) == CheckedState::DidOverflow;
+  typename Result<U, V>::ResultType result = 0;
+  overflowed |= !safeSub(x, y, result);
+  if (overflowed)
+    return ResultOverflowed;
+  return result;
+}
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator*(Checked<U, OverflowHandler> lhs, Checked<V, OverflowHandler> rhs) {
+  U x = 0;
+  V y = 0;
+  bool overflowed = lhs.safeGet(x) == CheckedState::DidOverflow || rhs.safeGet(y) == CheckedState::DidOverflow;
+  typename Result<U, V>::ResultType result = 0;
+  overflowed |= !safeMultiply(x, y, result);
+  if (overflowed)
+    return ResultOverflowed;
+  return result;
+}
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator+(Checked<U, OverflowHandler> lhs, V rhs) {
+  return lhs + Checked<V, OverflowHandler>(rhs);
+}
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator-(Checked<U, OverflowHandler> lhs, V rhs) {
+  return lhs - Checked<V, OverflowHandler>(rhs);
+}
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator*(Checked<U, OverflowHandler> lhs, V rhs) {
+  return lhs * Checked<V, OverflowHandler>(rhs);
+}
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator+(U lhs, Checked<V, OverflowHandler> rhs) {
+  return Checked<U, OverflowHandler>(lhs) + rhs;
+}
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator-(U lhs, Checked<V, OverflowHandler> rhs) {
+  return Checked<U, OverflowHandler>(lhs) - rhs;
+}
+
+template <typename U, typename V, typename OverflowHandler>
+static inline Checked<typename Result<U, V>::ResultType, OverflowHandler> operator*(U lhs, Checked<V, OverflowHandler> rhs) {
+  return Checked<U, OverflowHandler>(lhs) * rhs;
+}
 }
 
 using WTF::Checked;
 using WTF::CheckedState;
 using WTF::RecordOverflow;
 
 #endif