DdStone/QTradeProgram
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

update code

Browse Source
This commit is contained in:
unknown
2025-08-15 15:57:31 +08:00
parent 8e0d68bc21
commit e3f9abfd97
376 changed files with 351718 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

259
include/google/protobuf/util/field_comparator.h Normal file
View File

@@ -0,0 +1,259 @@
// 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.
// Defines classes for field comparison.
#ifndef GOOGLE_PROTOBUF_UTIL_FIELD_COMPARATOR_H__
#define GOOGLE_PROTOBUF_UTIL_FIELD_COMPARATOR_H__
#include <map>
#include <string>
#include <google/protobuf/stubs/common.h>
namespace google {
namespace protobuf {
class Message;
class EnumValueDescriptor;
class FieldDescriptor;
namespace util {
class FieldContext;
// 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 LIBPROTOBUF_EXPORT FieldComparator {
public:
FieldComparator();
virtual ~FieldComparator();
enum ComparisonResult {
SAME, // Compared fields are equal. In case of comparing submessages,
// user should not recursively compare their contents.
DIFFERENT, // Compared fields are different. In case of comparing
// submessages, user should not recursively compare their
// contents.
RECURSE, // Compared submessages need to be compared recursively.
// FieldComparator does not specify the semantics of recursive
// comparison. This value should not be returned for simple
// values.
};
// Compares the values of a field in two protocol buffer messages.
// Returns SAME or DIFFERENT for simple values, and SAME, DIFFERENT or RECURSE
// for submessages. Returning RECURSE for fields not being submessages is
// illegal.
// In case the given FieldDescriptor points to a repeated field, the indices
// need to be valid. Otherwise they should be ignored.
//
// FieldContext contains information about the specific instances of the
// fields being compared, versus FieldDescriptor which only contains general
// type information about the fields.
virtual ComparisonResult Compare(
const google::protobuf::Message& message_1,
const google::protobuf::Message& message_2,
const google::protobuf::FieldDescriptor* field,
int index_1, int index_2,
const google::protobuf::util::FieldContext* field_context) = 0;
private:
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(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 LIBPROTOBUF_EXPORT DefaultFieldComparator : public FieldComparator {
public:
enum FloatComparison {
EXACT, // Floats and doubles are compared exactly.
APPROXIMATE, // Floats and doubles are compared using the
// MathUtil::AlmostEqual method or
// MathUtil::WithinFractionOrMargin method.
// TODO(ksroka): Introduce third value to differenciate uses of AlmostEqual
// and WithinFractionOrMargin.
};
// Creates new comparator with float comparison set to EXACT.
DefaultFieldComparator();
virtual ~DefaultFieldComparator();
virtual ComparisonResult Compare(
const google::protobuf::Message& message_1,
const google::protobuf::Message& message_2,
const google::protobuf::FieldDescriptor* field,
int index_1, int index_2,
const google::protobuf::util::FieldContext* field_context);
void set_float_comparison(FloatComparison float_comparison) {
float_comparison_ = float_comparison;
}
FloatComparison float_comparison() const {
return float_comparison_;
}
// Set whether the FieldComparator shall treat floats or doubles that are both
// NaN as equal (treat_nan_as_equal = true) or as different
// (treat_nan_as_equal = false). Default is treating NaNs always as different.
void set_treat_nan_as_equal(bool treat_nan_as_equal) {
treat_nan_as_equal_ = treat_nan_as_equal;
}
bool treat_nan_as_equal() const {
return treat_nan_as_equal_;
}
// Sets the fraction and margin for the float comparison of a given field.
// Uses MathUtil::WithinFractionOrMargin to compare the values.
//
// REQUIRES: field->cpp_type == FieldDescriptor::CPPTYPE_DOUBLE or
// field->cpp_type == FieldDescriptor::CPPTYPE_FLOAT
// REQUIRES: float_comparison_ == APPROXIMATE
void SetFractionAndMargin(const FieldDescriptor* field, double fraction,
double margin);
// Sets the fraction and margin for the float comparison of all float and
// double fields, unless a field has been given a specific setting via
// SetFractionAndMargin() above.
// Uses MathUtil::WithinFractionOrMargin to compare the values.
//
// REQUIRES: float_comparison_ == APPROXIMATE
void SetDefaultFractionAndMargin(double fraction, double margin);
private:
// Defines the tolerance for floating point comparison (fraction and margin).
struct Tolerance {
double fraction;
double margin;
Tolerance()
: fraction(0.0),
margin(0.0) {}
Tolerance(double f, double m)
: fraction(f),
margin(m) {}
};
// Defines the map to store the tolerances for floating point comparison.
typedef std::map<const FieldDescriptor*, Tolerance> ToleranceMap;
// The following methods get executed when CompareFields is called for the
// basic types (instead of submessages). They return true on success. One
// can use ResultFromBoolean() to convert that boolean to a ComparisonResult
// value.
bool CompareBool(const google::protobuf::FieldDescriptor& field,
bool value_1, bool value_2) {
return value_1 == value_2;
}
// Uses CompareDoubleOrFloat, a helper function used by both CompareDouble and
// CompareFloat.
bool CompareDouble(const google::protobuf::FieldDescriptor& field,
double value_1, double value_2);
bool CompareEnum(const google::protobuf::FieldDescriptor& field,
const EnumValueDescriptor* value_1,
const EnumValueDescriptor* value_2);
// Uses CompareDoubleOrFloat, a helper function used by both CompareDouble and
// CompareFloat.
bool CompareFloat(const google::protobuf::FieldDescriptor& field,
float value_1, float value_2);
bool CompareInt32(const google::protobuf::FieldDescriptor& field,
int32 value_1, int32 value_2) {
return value_1 == value_2;
}
bool CompareInt64(const google::protobuf::FieldDescriptor& field,
int64 value_1, int64 value_2) {
return value_1 == value_2;
}
bool CompareString(const google::protobuf::FieldDescriptor& field,
const string& value_1, const string& value_2) {
return value_1 == value_2;
}
bool CompareUInt32(const google::protobuf::FieldDescriptor& field,
uint32 value_1, uint32 value_2) {
return value_1 == value_2;
}
bool CompareUInt64(const google::protobuf::FieldDescriptor& field,
uint64 value_1, uint64 value_2) {
return value_1 == value_2;
}
// This function is used by CompareDouble and CompareFloat to avoid code
// duplication. There are no checks done against types of the values passed,
// but it's likely to fail if passed non-numeric arguments.
template<typename T>
bool CompareDoubleOrFloat(const google::protobuf::FieldDescriptor& field,
T value_1, T value_2);
// Returns FieldComparator::SAME if boolean_result is true and
// FieldComparator::DIFFERENT otherwise.
ComparisonResult ResultFromBoolean(bool boolean_result) const;
FloatComparison float_comparison_;
// If true, floats and doubles that are both NaN are considered to be
// equal. Otherwise, two floats or doubles that are NaN are considered to be
// different.
bool treat_nan_as_equal_;
// True iff default_tolerance_ has been explicitly set.
//
// If false, then the default tolerance for floats and doubles is that which
// is used by MathUtil::AlmostEquals().
bool has_default_tolerance_;
// Default float/double tolerance. Only meaningful if
// has_default_tolerance_ == true.
Tolerance default_tolerance_;
// Field-specific float/double tolerances, which override any default for
// those particular fields.
ToleranceMap map_tolerance_;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(DefaultFieldComparator);
};
} // namespace util
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_UTIL_FIELD_COMPARATOR_H__