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/**
* Copyright (C) 2022-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/db/query/ce/value_utils.h"
#include "mongo/db/query/ce/max_diff.h"
#include "mongo/db/query/ce/scalar_histogram.h"
namespace mongo::ce {
using namespace sbe;
SBEValue::SBEValue(value::TypeTags tag, value::Value val) : _tag(tag), _val(val) {}
SBEValue::SBEValue(std::pair<value::TypeTags, value::Value> v) : SBEValue(v.first, v.second) {}
SBEValue::SBEValue(const SBEValue& other) {
auto [tag, val] = copyValue(other._tag, other._val);
_tag = tag;
_val = val;
}
SBEValue::SBEValue(SBEValue&& other) {
_tag = other._tag;
_val = other._val;
other._tag = value::TypeTags::Nothing;
other._val = 0;
}
SBEValue::~SBEValue() {
value::releaseValue(_tag, _val);
}
SBEValue& SBEValue::operator=(const SBEValue& other) {
value::releaseValue(_tag, _val);
auto [tag, val] = copyValue(other._tag, other._val);
_tag = tag;
_val = val;
return *this;
}
SBEValue& SBEValue::operator=(SBEValue&& other) {
value::releaseValue(_tag, _val);
_tag = other._tag;
_val = other._val;
other._tag = value::TypeTags::Nothing;
other._val = 0;
return *this;
}
std::pair<value::TypeTags, value::Value> SBEValue::get() const {
return std::make_pair(_tag, _val);
}
value::TypeTags SBEValue::getTag() const {
return _tag;
}
value::Value SBEValue::getValue() const {
return _val;
}
std::pair<value::TypeTags, value::Value> makeInt64Value(int v) {
return std::make_pair(value::TypeTags::NumberInt64, value::bitcastFrom<int64_t>(v));
};
std::pair<value::TypeTags, value::Value> makeNullValue() {
return std::make_pair(value::TypeTags::Null, 0);
};
bool sameTypeClass(value::TypeTags tag1, value::TypeTags tag2) {
if (tag1 == tag2) {
return true;
}
static constexpr const char* kTempFieldName = "temp";
BSONObjBuilder minb1;
minb1.appendMinForType(kTempFieldName, value::tagToType(tag1));
const BSONObj min1 = minb1.obj();
BSONObjBuilder minb2;
minb2.appendMinForType(kTempFieldName, value::tagToType(tag2));
const BSONObj min2 = minb2.obj();
return min1.woCompare(min2) == 0;
}
bool sameTypeBracket(value::TypeTags tag1, value::TypeTags tag2) {
if (tag1 == tag2) {
return true;
}
return ((value::isNumber(tag1) && value::isNumber(tag2)) ||
(value::isString(tag1) && value::isString(tag2)));
}
int32_t compareValues(value::TypeTags tag1,
value::Value val1,
value::TypeTags tag2,
value::Value val2) {
const auto [compareTag, compareVal] = value::compareValue(tag1, val1, tag2, val2);
uassert(6660547, "Invalid comparison result", compareTag == value::TypeTags::NumberInt32);
return value::bitcastTo<int32_t>(compareVal);
}
void sortValueVector(std::vector<SBEValue>& sortVector) {
const auto cmp = [](const SBEValue& a, const SBEValue& b) {
return compareValues(a.getTag(), a.getValue(), b.getTag(), b.getValue()) < 0;
};
std::sort(sortVector.begin(), sortVector.end(), cmp);
}
double valueToDouble(value::TypeTags tag, value::Value val) {
double result = 0;
if (value::isNumber(tag)) {
result = value::numericCast<double>(tag, val);
} else if (value::isString(tag)) {
const StringData sd = value::getStringView(tag, val);
// Convert a prefix of the string to a double.
const size_t maxPrecision = std::min(sd.size(), sizeof(double));
for (size_t i = 0; i < maxPrecision; ++i) {
const char ch = sd[i];
const double charToDbl = ch / std::pow(2, i * 8);
result += charToDbl;
}
} else {
uassert(6844500, "Unexpected value type", false);
}
return result;
}
} // namespace mongo::ce
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