field_comparator.h | Explore in Territory

// Protocol Buffers - Google's data interchange format
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// https://developers.google.com/protocol-buffers/
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// Defines classes for field comparison.

#ifndef GOOGLE_PROTOBUF_UTIL_FIELD_COMPARATOR_H__
#define GOOGLE_PROTOBUF_UTIL_FIELD_COMPARATOR_H__


#include <cstdint>
#include <map>
#include <string>
#include <vector>

#include <google/protobuf/stubs/common.h>

// Must be included last.
#include <google/protobuf/port_def.inc>

namespace google {
namespace protobuf {

class Message;
class EnumValueDescriptor;
class FieldDescriptor;

namespace util {

class FieldContext;
class MessageDifferencer;

// Base class specifying the interface for comparing protocol buffer fields.
// Regular users should consider using or subclassing DefaultFieldComparator
// rather than this interface.
// Currently, this does not support comparing unknown fields.
class PROTOBUF_EXPORT FieldComparator { … };

// Basic implementation of FieldComparator.  Supports three modes of floating
// point value comparison: exact, approximate using MathUtil::AlmostEqual
// method, and arbitrarily precise using MathUtil::WithinFractionOrMargin.
class PROTOBUF_EXPORT SimpleFieldComparator : public FieldComparator { … };

// Default field comparison: use the basic implementation of FieldComparator.
#ifdef PROTOBUF_FUTURE_BREAKING_CHANGES
class PROTOBUF_EXPORT DefaultFieldComparator final
    : public SimpleFieldComparator
#else   // PROTOBUF_FUTURE_BREAKING_CHANGES
class PROTOBUF_EXPORT DefaultFieldComparator : public SimpleFieldComparator
#endif  // PROTOBUF_FUTURE_BREAKING_CHANGES
{ … };

}  // namespace util
}  // namespace protobuf
}  // namespace google

#include <google/protobuf/port_undef.inc>

#endif  // GOOGLE_PROTOBUF_UTIL_FIELD_COMPARATOR_H__
chromium/third_party/protobuf/src/google/protobuf/util/field_comparator.h
