Update //third_party/protobuf to version 3.

third_party/protobuf/src/google/protobuf/util/internal/datapiece.cc

Index: third_party/protobuf/src/google/protobuf/util/internal/datapiece.cc
diff --git a/third_party/protobuf/src/google/protobuf/util/internal/datapiece.cc b/third_party/protobuf/src/google/protobuf/util/internal/datapiece.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b557429fc1f4b66c8a3ef04a173b53debab56c1b
--- /dev/null
+++ b/third_party/protobuf/src/google/protobuf/util/internal/datapiece.cc
@@ -0,0 +1,324 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// 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 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.
+
+#include <google/protobuf/util/internal/datapiece.h>
+
+#include <google/protobuf/struct.pb.h>
+#include <google/protobuf/type.pb.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/util/internal/utility.h>
+#include <google/protobuf/stubs/strutil.h>
+#include <google/protobuf/stubs/mathlimits.h>
+#include <google/protobuf/stubs/mathutil.h>
+
+namespace google {
+namespace protobuf {
+namespace util {
+namespace converter {
+
+using google::protobuf::EnumDescriptor;
+using google::protobuf::EnumValueDescriptor;
+;
+;
+using util::error::Code;
+using util::Status;
+using util::StatusOr;
+
+namespace {
+
+inline Status InvalidArgument(StringPiece value_str) {
+  return Status(util::error::INVALID_ARGUMENT, value_str);
+}
+
+template <typename To, typename From>
+StatusOr<To> ValidateNumberConversion(To after, From before) {
+  if (after == before &&
+      MathUtil::Sign<From>(before) == MathUtil::Sign<To>(after)) {
+    return after;
+  } else {
+    return InvalidArgument(::google::protobuf::internal::is_integral<From>::value
+                               ? ValueAsString(before)
+                               : ::google::protobuf::internal::is_same<From, double>::value
+                                     ? DoubleAsString(before)
+                                     : FloatAsString(before));
+  }
+}
+
+// For general conversion between
+//     int32, int64, uint32, uint64, double and float
+// except conversion between double and float.
+template <typename To, typename From>
+StatusOr<To> NumberConvertAndCheck(From before) {
+  if (::google::protobuf::internal::is_same<From, To>::value) return before;
+
+  To after = static_cast<To>(before);
+  return ValidateNumberConversion(after, before);
+}
+
+// For conversion to integer types (int32, int64, uint32, uint64) from floating
+// point types (double, float) only.
+template <typename To, typename From>
+StatusOr<To> FloatingPointToIntConvertAndCheck(From before) {
+  if (::google::protobuf::internal::is_same<From, To>::value) return before;
+
+  To after = static_cast<To>(before);
+  return ValidateNumberConversion(after, before);
+}
+
+// For conversion between double and float only.
+template <typename To, typename From>
+StatusOr<To> FloatingPointConvertAndCheck(From before) {
+  if (MathLimits<From>::IsNaN(before)) {
+    return std::numeric_limits<To>::quiet_NaN();
+  }
+
+  To after = static_cast<To>(before);
+  if (MathUtil::AlmostEquals<To>(after, before)) {
+    return after;
+  } else {
+    return InvalidArgument(::google::protobuf::internal::is_same<From, double>::value
+                               ? DoubleAsString(before)
+                               : FloatAsString(before));
+  }
+}
+
+}  // namespace
+
+StatusOr<int32> DataPiece::ToInt32() const {
+  if (type_ == TYPE_STRING) return StringToNumber<int32>(safe_strto32);
+
+  if (type_ == TYPE_DOUBLE)
+    return FloatingPointToIntConvertAndCheck<int32, double>(double_);
+
+  if (type_ == TYPE_FLOAT)
+    return FloatingPointToIntConvertAndCheck<int32, float>(float_);
+
+  return GenericConvert<int32>();
+}
+
+StatusOr<uint32> DataPiece::ToUint32() const {
+  if (type_ == TYPE_STRING) return StringToNumber<uint32>(safe_strtou32);
+
+  if (type_ == TYPE_DOUBLE)
+    return FloatingPointToIntConvertAndCheck<uint32, double>(double_);
+
+  if (type_ == TYPE_FLOAT)
+    return FloatingPointToIntConvertAndCheck<uint32, float>(float_);
+
+  return GenericConvert<uint32>();
+}
+
+StatusOr<int64> DataPiece::ToInt64() const {
+  if (type_ == TYPE_STRING) return StringToNumber<int64>(safe_strto64);
+
+  if (type_ == TYPE_DOUBLE)
+    return FloatingPointToIntConvertAndCheck<int64, double>(double_);
+
+  if (type_ == TYPE_FLOAT)
+    return FloatingPointToIntConvertAndCheck<int64, float>(float_);
+
+  return GenericConvert<int64>();
+}
+
+StatusOr<uint64> DataPiece::ToUint64() const {
+  if (type_ == TYPE_STRING) return StringToNumber<uint64>(safe_strtou64);
+
+  if (type_ == TYPE_DOUBLE)
+    return FloatingPointToIntConvertAndCheck<uint64, double>(double_);
+
+  if (type_ == TYPE_FLOAT)
+    return FloatingPointToIntConvertAndCheck<uint64, float>(float_);
+
+  return GenericConvert<uint64>();
+}
+
+StatusOr<double> DataPiece::ToDouble() const {
+  if (type_ == TYPE_FLOAT) {
+    return FloatingPointConvertAndCheck<double, float>(float_);
+  }
+  if (type_ == TYPE_STRING) {
+    if (str_ == "Infinity") return std::numeric_limits<double>::infinity();
+    if (str_ == "-Infinity") return -std::numeric_limits<double>::infinity();
+    if (str_ == "NaN") return std::numeric_limits<double>::quiet_NaN();
+    return StringToNumber<double>(safe_strtod);
+  }
+  return GenericConvert<double>();
+}
+
+StatusOr<float> DataPiece::ToFloat() const {
+  if (type_ == TYPE_DOUBLE) {
+    return FloatingPointConvertAndCheck<float, double>(double_);
+  }
+  if (type_ == TYPE_STRING) {
+    if (str_ == "Infinity") return std::numeric_limits<float>::infinity();
+    if (str_ == "-Infinity") return -std::numeric_limits<float>::infinity();
+    if (str_ == "NaN") return std::numeric_limits<float>::quiet_NaN();
+    // SafeStrToFloat() is used instead of safe_strtof() because the later
+    // does not fail on inputs like SimpleDtoa(DBL_MAX).
+    return StringToNumber<float>(SafeStrToFloat);
+  }
+  return GenericConvert<float>();
+}
+
+StatusOr<bool> DataPiece::ToBool() const {
+  switch (type_) {
+    case TYPE_BOOL:
+      return bool_;
+    case TYPE_STRING:
+      return StringToNumber<bool>(safe_strtob);
+    default:
+      return InvalidArgument(
+          ValueAsStringOrDefault("Wrong type. Cannot convert to Bool."));
+  }
+}
+
+StatusOr<string> DataPiece::ToString() const {
+  switch (type_) {
+    case TYPE_STRING:
+      return str_.ToString();
+    case TYPE_BYTES: {
+      string base64;
+      Base64Escape(str_, &base64);
+      return base64;
+    }
+    default:
+      return InvalidArgument(
+          ValueAsStringOrDefault("Cannot convert to string."));
+  }
+}
+
+string DataPiece::ValueAsStringOrDefault(StringPiece default_string) const {
+  switch (type_) {
+    case TYPE_INT32:
+      return SimpleItoa(i32_);
+    case TYPE_INT64:
+      return SimpleItoa(i64_);
+    case TYPE_UINT32:
+      return SimpleItoa(u32_);
+    case TYPE_UINT64:
+      return SimpleItoa(u64_);
+    case TYPE_DOUBLE:
+      return DoubleAsString(double_);
+    case TYPE_FLOAT:
+      return FloatAsString(float_);
+    case TYPE_BOOL:
+      return SimpleBtoa(bool_);
+    case TYPE_STRING:
+      return StrCat("\"", str_.ToString(), "\"");
+    case TYPE_BYTES: {
+      string base64;
+      WebSafeBase64Escape(str_, &base64);
+      return StrCat("\"", base64, "\"");
+    }
+    case TYPE_NULL:
+      return "null";
+    default:
+      return default_string.ToString();
+  }
+}
+
+StatusOr<string> DataPiece::ToBytes() const {
+  if (type_ == TYPE_BYTES) return str_.ToString();
+  if (type_ == TYPE_STRING) {
+    string decoded;
+    if (!WebSafeBase64Unescape(str_, &decoded)) {
+      if (!Base64Unescape(str_, &decoded)) {
+        return InvalidArgument(
+            ValueAsStringOrDefault("Invalid data in input."));
+      }
+    }
+    return decoded;
+  } else {
+    return InvalidArgument(ValueAsStringOrDefault(
+        "Wrong type. Only String or Bytes can be converted to Bytes."));
+  }
+}
+
+StatusOr<int> DataPiece::ToEnum(const google::protobuf::Enum* enum_type) const {
+  if (type_ == TYPE_NULL) return google::protobuf::NULL_VALUE;
+
+  if (type_ == TYPE_STRING) {
+    // First try the given value as a name.
+    string enum_name = str_.ToString();
+    const google::protobuf::EnumValue* value =
+        FindEnumValueByNameOrNull(enum_type, enum_name);
+    if (value != NULL) return value->number();
+    // Next try a normalized name.
+    for (string::iterator it = enum_name.begin(); it != enum_name.end(); ++it) {
+      *it = *it == '-' ? '_' : ascii_toupper(*it);
+    }
+    value = FindEnumValueByNameOrNull(enum_type, enum_name);
+    if (value != NULL) return value->number();
+  } else {
+    StatusOr<int32> value = ToInt32();
+    if (value.ok()) {
+      if (const google::protobuf::EnumValue* enum_value =
+              FindEnumValueByNumberOrNull(enum_type, value.ValueOrDie())) {
+        return enum_value->number();
+      }
+    }
+  }
+  return InvalidArgument(
+      ValueAsStringOrDefault("Cannot find enum with given value."));
+}
+
+template <typename To>
+StatusOr<To> DataPiece::GenericConvert() const {
+  switch (type_) {
+    case TYPE_INT32:
+      return NumberConvertAndCheck<To, int32>(i32_);
+    case TYPE_INT64:
+      return NumberConvertAndCheck<To, int64>(i64_);
+    case TYPE_UINT32:
+      return NumberConvertAndCheck<To, uint32>(u32_);
+    case TYPE_UINT64:
+      return NumberConvertAndCheck<To, uint64>(u64_);
+    case TYPE_DOUBLE:
+      return NumberConvertAndCheck<To, double>(double_);
+    case TYPE_FLOAT:
+      return NumberConvertAndCheck<To, float>(float_);
+    default:  // TYPE_ENUM, TYPE_STRING, TYPE_CORD, TYPE_BOOL
+      return InvalidArgument(ValueAsStringOrDefault(
+          "Wrong type. Bool, Enum, String and Cord not supported in "
+          "GenericConvert."));
+  }
+}
+
+template <typename To>
+StatusOr<To> DataPiece::StringToNumber(bool (*func)(StringPiece, To*)) const {
+  To result;
+  if (func(str_, &result)) return result;
+  return InvalidArgument(StrCat("\"", str_.ToString(), "\""));
+}
+
+}  // namespace converter
+}  // namespace util
+}  // namespace protobuf
+}  // namespace google