mirror of https://gitee.com/bigwinds/arangodb
77 lines
3.1 KiB
C++
77 lines
3.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2018 ArangoDB GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Tobias Gödderz
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////////////////////////////////////////////////////////////////////////////////
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#include "ExecutorInfos.h"
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using namespace arangodb::aql;
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ExecutorInfos::ExecutorInfos(
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// cppcheck-suppress passedByValue
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std::shared_ptr<std::unordered_set<RegisterId>> readableInputRegisters,
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// cppcheck-suppress passedByValue
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std::shared_ptr<std::unordered_set<RegisterId>> writeableOutputRegisters,
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RegisterId nrInputRegisters, RegisterId nrOutputRegisters,
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// cppcheck-suppress passedByValue
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std::unordered_set<RegisterId> registersToClear,
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// cppcheck-suppress passedByValue
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std::unordered_set<RegisterId> registersToKeep)
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: _inRegs(std::move(readableInputRegisters)),
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_outRegs(std::move(writeableOutputRegisters)),
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_numInRegs(nrInputRegisters),
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_numOutRegs(nrOutputRegisters),
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_registersToKeep(std::make_shared<std::unordered_set<RegisterId>>(
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std::move(registersToKeep))),
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_registersToClear(std::make_shared<std::unordered_set<RegisterId>>(
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std::move(registersToClear))) {
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// We allow these to be passed as nullptr for ease of use, but do NOT allow
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// the members to be null for simplicity and safety.
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if (_inRegs == nullptr) {
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_inRegs = std::make_shared<decltype(_inRegs)::element_type>();
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}
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if (_outRegs == nullptr) {
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_outRegs = std::make_shared<decltype(_outRegs)::element_type>();
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}
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// The second assert part is from ReturnExecutor special case, we shrink all
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// results into a single Register column.
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TRI_ASSERT((nrInputRegisters <= nrOutputRegisters) ||
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(nrOutputRegisters == 1 && _registersToKeep->empty() &&
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_registersToClear->empty()));
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#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
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for (RegisterId const inReg : *_inRegs) {
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TRI_ASSERT(inReg < nrInputRegisters);
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}
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for (RegisterId const outReg : *_outRegs) {
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TRI_ASSERT(outReg < nrOutputRegisters);
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}
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for (RegisterId const regToClear : *_registersToClear) {
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// sic: It's possible that a current output register is immediately cleared!
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TRI_ASSERT(regToClear < nrOutputRegisters);
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TRI_ASSERT(_registersToKeep->find(regToClear) == _registersToKeep->end());
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}
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for (RegisterId const regToKeep : *_registersToKeep) {
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TRI_ASSERT(regToKeep < nrInputRegisters);
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TRI_ASSERT(_registersToClear->find(regToKeep) == _registersToClear->end());
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}
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#endif
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}
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