wordRes.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2016-2022 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::wordRes
 
Description
    A List of wordRe with additional matching capabilities.
 
SourceFiles
    wordResI.H
    wordRes.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_wordRes_H
#define Foam_wordRes_H
 
#include "wordReList.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class wordRes Declaration
\*---------------------------------------------------------------------------*/
 
class wordRes
:
    public List<wordRe>
{
    // Private Methods
 
        //- Smart match as literal or regex, stopping on the first match.
        //  \return index of first match, -1 if not found
        inline static label first_match
        (
            const UList<wordRe>& selectors,
            const std::string& text,
            const bool literal=false
        );
 
        //- Smart match across entire list, returning the best match type.
        //  Stops on the first literal match, or continues to examine
        //  if a regex match occurs.
        //  \return wordRe::LITERAL, wordRe::REGEX on match and
        //      wordRe::UNKNOWN otherwise.
        inline static wordRe::compOption found_matched
        (
            const UList<wordRe>& selectors,
            const std::string& text
        );
 
 
public:
 
    // Static Data / Methods
 
        //- Return a null wordRes - a reference to the NullObject
        inline static const wordRes& null();
 
        //- Return a wordRes with duplicate entries filtered out.
        //  No distinction made between literals and regular expressions.
        static wordRes uniq(const UList<wordRe>& input);
 
 
    // Constructors
 
        //- Inherit constructors from List of wordRe
        using List<wordRe>::List;
 
 
    //- Destructor
    ~wordRes() = default;
 
 
    // Member Functions
 
        //- Filter out duplicate entries (inplace).
        //  No distinction made between literals and regular expressions.
        void uniq();
 
        //- Smart match as literal or regex, stopping on the first match.
        //
        //  \param literal Force literal match only.
        //  \return True if text matches ANY of the entries.
        inline bool match(const std::string& text, bool literal=false) const;
 
        //- Smart match in the list of matchers, returning the match type.
        //  It stops if there is a literal match, or continues to examine
        //  other regexs.
        //  \return LITERAL if a lteral match was found,
        //      REGEX if any regex match was found,
        //      UNKNOWN otherwise.
        inline wordRe::compOption matched(const std::string& text) const;
 
        //- Return list indices for all matches.
        //
        //  \param input  A list of string inputs to match against
        //  \param invert invert the matching logic
        //  \return indices of the matches in the input list
        template<class StringType>
        inline labelList matching
        (
            const UList<StringType>& input,
            const bool invert=false
        ) const;
 
 
    // Member Operators
 
        //- Identical to match(), for use as a predicate.
        inline bool operator()(const std::string& text) const;
 
 
    // Functors
 
        //- Functor wrapper of a list of wordRe for matching
        struct matcher
        {
            //- Construct with 'allow' matcher
            inline matcher(const UList<wordRe>& allow);
 
            //- Nothing defined
            inline bool empty() const noexcept;
 
            //- True if text matches ANY of the entries.
            //  Allows use as a predicate.
            inline bool operator()(const std::string& text) const;
 
        private:
            const UList<wordRe>& allow_;
        };
 
 
        //- Functor wrapper of allow/deny lists of wordRe for filtering
        //
        //  An empty 'allow' accepts everything not in 'deny'.
        //  A literal 'allow' match has higher priority than any 'deny'.
        //  A regex 'allow' match has lower priority than any 'deny'.
        //
        //  Example (when applied to a list of words),
        //  \verbatim
        //     input:  ( abc apple test other val val1 val2 wall wall1 wall2 )
        //     allow:  ( abc def "t.*" other val val1 "wall.*" )
        //     deny:   ( "[ab].*" "t.*" other "val[0-9]" wall )
        //
        //     result:  (abc other val val1 wall1 wall2)
        //  \endverbatim
        struct filter
        {
            //- Construct with 'allow' and 'deny' matchers
            inline filter
            (
                const UList<wordRe>& allow,
                const UList<wordRe>& deny
            );
 
            //- Nothing defined
            inline bool empty() const noexcept;
 
            //- True if matched but not blocked
            inline bool operator()(const std::string& text) const;
 
        private:
            const UList<wordRe>& allow_;
            const UList<wordRe>& deny_;
        };
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "wordResI.H"
 
#endif
 
// ************************************************************************* //