mirror of https://gitee.com/bigwinds/arangodb
142 lines
6.0 KiB
C++
142 lines
6.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief Parser for attibute names
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/// Tokenizes the attribute by dots and handles [*] expansion.
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014-2015 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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/// @author Copyright 2014-2015, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2012-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_BASICS_ATTRIBUTENAMEPARSER_H
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#define ARANGODB_BASICS_ATTRIBUTENAMEPARSER_H 1
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#include "Common.h"
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namespace triagens {
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namespace basics {
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// -----------------------------------------------------------------------------
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// --SECTION-- struct AttributeName
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// -----------------------------------------------------------------------------
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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 (std::string const& name)
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: AttributeName(name, false) {
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}
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AttributeName (std::string const& name, bool expand)
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: name(name),
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shouldExpand(expand) {
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}
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AttributeName (AttributeName const& other)
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: name(other.name),
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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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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&);
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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&,
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std::vector<std::vector<AttributeName>> const&);
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};
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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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 (std::string const& input,
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std::vector<AttributeName>& result);
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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,
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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 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,
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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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}
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}
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std::ostream& operator<< (std::ostream&, triagens::basics::AttributeName const*);
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std::ostream& operator<< (std::ostream&, triagens::basics::AttributeName const&);
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std::ostream& operator<< (std::ostream&, std::vector<triagens::basics::AttributeName> const*);
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std::ostream& operator<< (std::ostream&, std::vector<triagens::basics::AttributeName> const&);
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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