Squashed 'third_party/protobuf/' content from commit e35e248
Change-Id: I6cbe123d09fe50fdcad0e51466665daeee7433c7
git-subtree-dir: third_party/protobuf
git-subtree-split: e35e24800fb8d694bdeea5fd63dc7d1b14d68723
diff --git a/src/google/protobuf/util/internal/datapiece.cc b/src/google/protobuf/util/internal/datapiece.cc
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+++ b/src/google/protobuf/util/internal/datapiece.cc
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+// 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