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/**
* Copyright (C) 2016 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/query/collation/collator_interface_mock.h"
#include <algorithm>
#include <cctype>
#include <string>
#include "mongo/stdx/memory.h"
#include "mongo/util/assert_util.h"
namespace mongo {
namespace {
std::string mockTypeToString(CollatorInterfaceMock::MockType type) {
switch (type) {
case CollatorInterfaceMock::MockType::kReverseString:
return "mock_reverse_string";
case CollatorInterfaceMock::MockType::kAlwaysEqual:
return "mock_always_equal";
case CollatorInterfaceMock::MockType::kToLowerString:
return "mock_to_lower_string";
}
MONGO_UNREACHABLE;
}
} // namespace
CollatorInterfaceMock::CollatorInterfaceMock(MockType mockType)
: CollatorInterface(CollationSpec(mockTypeToString(mockType), "mock_version")),
_mockType(mockType) {}
std::unique_ptr<CollatorInterface> CollatorInterfaceMock::clone() const {
auto clone = stdx::make_unique<CollatorInterfaceMock>(_mockType);
return {std::move(clone)};
}
int CollatorInterfaceMock::compare(StringData left, StringData right) const {
switch (_mockType) {
case MockType::kReverseString: {
std::string leftString = left.toString();
std::string rightString = right.toString();
std::reverse(leftString.begin(), leftString.end());
std::reverse(rightString.begin(), rightString.end());
StringData leftReversed(leftString);
StringData rightReversed(rightString);
return leftReversed.compare(rightReversed);
}
case MockType::kToLowerString: {
std::string leftString = left.toString();
std::string rightString = right.toString();
std::transform(leftString.begin(), leftString.end(), leftString.begin(), ::tolower);
std::transform(rightString.begin(), rightString.end(), rightString.begin(), ::tolower);
StringData leftLower(leftString);
StringData rightLower(rightString);
return leftLower.compare(rightLower);
}
case MockType::kAlwaysEqual:
return 0;
}
MONGO_UNREACHABLE;
}
int CollatorInterfaceMock::compare(const BSONObj& left, const BSONObj& right) const {
return left.woCompare(right, BSONObj(), true, this);
}
CollatorInterface::ComparisonKey CollatorInterfaceMock::getComparisonKey(
StringData stringData) const {
switch (_mockType) {
case MockType::kReverseString: {
std::string keyDataString = stringData.toString();
std::reverse(keyDataString.begin(), keyDataString.end());
return makeComparisonKey(std::move(keyDataString));
}
case MockType::kToLowerString: {
std::string keyDataString = stringData.toString();
std::transform(
keyDataString.begin(), keyDataString.end(), keyDataString.begin(), ::tolower);
return makeComparisonKey(std::move(keyDataString));
}
case MockType::kAlwaysEqual:
return makeComparisonKey("always_equal");
}
MONGO_UNREACHABLE;
}
} // namespace mongo
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