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/**
* Copyright (C) 2018-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/matcher/expression.h"
#include "mongo/bson/bsonmisc.h"
#include "mongo/bson/bsonobj.h"
namespace mongo {
/**
* Enabling the disableMatchExpressionOptimization fail point will stop match expressions from
* being optimized.
*/
MONGO_FAIL_POINT_DEFINE(disableMatchExpressionOptimization);
MatchExpression::MatchExpression(MatchType type) : _matchType(type) {}
std::string MatchExpression::toString() const {
BSONObjBuilder bob;
serialize(&bob);
return bob.obj().toString();
}
std::string MatchExpression::debugString() const {
StringBuilder builder;
debugString(builder, 0);
return builder.str();
}
void MatchExpression::_debugAddSpace(StringBuilder& debug, int indentationLevel) const {
for (int i = 0; i < indentationLevel; i++)
debug << " ";
}
bool MatchExpression::matchesBSON(const BSONObj& doc, MatchDetails* details) const {
BSONMatchableDocument mydoc(doc);
return matches(&mydoc, details);
}
bool MatchExpression::matchesBSONElement(BSONElement elem, MatchDetails* details) const {
BSONElementViewMatchableDocument matchableDoc(elem);
return matches(&matchableDoc, details);
}
void MatchExpression::setCollator(const CollatorInterface* collator) {
for (size_t i = 0; i < numChildren(); ++i) {
getChild(i)->setCollator(collator);
}
_doSetCollator(collator);
}
void MatchExpression::addDependencies(DepsTracker* deps) const {
for (size_t i = 0; i < numChildren(); ++i) {
// Don't recurse through MatchExpression nodes which require an entire array or entire
// subobject for matching.
const auto type = matchType();
switch (type) {
case MatchExpression::ELEM_MATCH_VALUE:
case MatchExpression::ELEM_MATCH_OBJECT:
case MatchExpression::INTERNAL_SCHEMA_OBJECT_MATCH:
continue;
default:
getChild(i)->addDependencies(deps);
}
}
_doAddDependencies(deps);
}
}
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