mirror of https://gitee.com/bigwinds/arangodb
136 lines
5.6 KiB
C++
136 lines
5.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS 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 Michael Hackstein
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_BASICS_ATTRIBUTE_NAME_PARSER_H
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#define ARANGODB_BASICS_ATTRIBUTE_NAME_PARSER_H 1
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#include <iosfwd>
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#include "Common.h"
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namespace arangodb {
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class StringRef;
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namespace basics {
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Struct that knows the name of the attribute used to identify its pid
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/// but also knows if the attribute was followed by [*] which means
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/// it should be expanded. Only works on arrays.
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////////////////////////////////////////////////////////////////////////////////
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struct AttributeName {
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std::string name;
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bool shouldExpand;
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explicit AttributeName(arangodb::StringRef const& name);
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AttributeName(std::string const& name, bool expand)
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: name(name), shouldExpand(expand) {}
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AttributeName(std::string&& name, bool expand)
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: name(std::move(name)), shouldExpand(expand) {}
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AttributeName(arangodb::StringRef const& name, bool expand);
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AttributeName(AttributeName const& other) = default;
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AttributeName& operator=(AttributeName const& other) = default;
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AttributeName(AttributeName&& other) = default;
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AttributeName& operator=(AttributeName&& other) = default;
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bool operator==(AttributeName const& other) const {
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return name == other.name && shouldExpand == other.shouldExpand;
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}
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bool operator!=(AttributeName const& other) const {
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return name != other.name || shouldExpand != other.shouldExpand;
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}
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//////////////////////////////////////////////////////////////////////////////
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/// @brief compare two attribute name vectors
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//////////////////////////////////////////////////////////////////////////////
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static bool isIdentical(std::vector<AttributeName> const&,
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std::vector<AttributeName> const&, bool);
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//////////////////////////////////////////////////////////////////////////////
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/// @brief compare two attribute name vectors
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//////////////////////////////////////////////////////////////////////////////
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static bool isIdentical(std::vector<std::vector<AttributeName>> const& lhs,
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std::vector<std::vector<AttributeName>> const& rhs,
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bool ignoreExpansionInLast);
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//////////////////////////////////////////////////////////////////////////////
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/// @brief compare two attribute name vectors and return true if their names
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/// matches
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//////////////////////////////////////////////////////////////////////////////
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static bool namesMatch(std::vector<AttributeName> const&,
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std::vector<AttributeName> const&);
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Parse an input string into attribute names and expansion flags
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////////////////////////////////////////////////////////////////////////////////
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void TRI_ParseAttributeString(arangodb::StringRef const& input,
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std::vector<AttributeName>& result, bool allowExpansion);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Parse an input string into attribute names and expansion flags
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////////////////////////////////////////////////////////////////////////////////
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void TRI_ParseAttributeString(std::string const& input,
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std::vector<AttributeName>& result, bool allowExpansion);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Transform a vector of AttributeNames back into a string
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////////////////////////////////////////////////////////////////////////////////
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void TRI_AttributeNamesToString(std::vector<AttributeName> const& input,
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std::string& result, bool excludeExpansion = false);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Transform a vector of AttributeNames into joined nested strings
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/// The onlyFirst parameter is used to define if we only have to join the
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/// first attribute
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////////////////////////////////////////////////////////////////////////////////
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void TRI_AttributeNamesJoinNested(std::vector<AttributeName> const& input,
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std::vector<std::string>& result, bool onlyFirst);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Tests if this AttributeName uses an expansion operator
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////////////////////////////////////////////////////////////////////////////////
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bool TRI_AttributeNamesHaveExpansion(std::vector<AttributeName> const& input);
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} // namespace basics
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} // namespace arangodb
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std::ostream& operator<<(std::ostream&, arangodb::basics::AttributeName const&);
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std::ostream& operator<<(std::ostream&, std::vector<arangodb::basics::AttributeName> const&);
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#endif
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