////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2019-2019 ArangoDB GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///     http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Michael Hackstein
////////////////////////////////////////////////////////////////////////////////

#include "PruneExpressionEvaluator.h"

#include "Aql/AqlValue.h"
#include "Aql/Expression.h"
#include "Transaction/Methods.h"

using namespace arangodb;
using namespace arangodb::aql;

PruneExpressionEvaluator::PruneExpressionEvaluator(
    transaction::Methods* trx, Query* query,
    std::vector<Variable const*> const&& vars, std::vector<RegisterId> const&& regs,
    size_t vertexVarIdx, size_t edgeVarIdx, size_t pathVarIdx, Expression* expr)
    : _trx(trx),
      _pruneExpression(expr),
      _ctx(query, std::move(vars), std::move(regs), vertexVarIdx, edgeVarIdx, pathVarIdx) {}

PruneExpressionEvaluator::~PruneExpressionEvaluator() = default;

bool PruneExpressionEvaluator::evaluate() {
  bool mustDestroy = false;
  aql::AqlValue res = _pruneExpression->execute(_trx, &_ctx, mustDestroy);
  arangodb::aql::AqlValueGuard guard(res, mustDestroy);
  TRI_ASSERT(res.isBoolean());
  return res.toBoolean();
}