eda_pattern_match.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015-2023 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or 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 this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */
 
#ifndef EDA_PATTERN_MATCH_H
#define EDA_PATTERN_MATCH_H
 
#include <kicommon.h>
#include <vector>
#include <map>
#include <memory>
#include <wx/string.h>
#include <wx/regex.h>
 
static const int EDA_PATTERN_NOT_FOUND = wxNOT_FOUND;
 
/*
 * A structure for storing weighted search terms.
 *
 * NOTE: an exact match is scored at 8 * Score while a match at the start of the text is scored
 * at 2 * Score.
 */
struct KICOMMON_API SEARCH_TERM
{
    SEARCH_TERM( const wxString& aText, int aScore ) :
            Text( aText ),
            Score( aScore ),
            Normalized( false )
    {}
 
    wxString Text;
    int      Score;
    bool     Normalized;
};
 
 
/*
 * Interface for a pattern matcher, for which there are several implementations
 */
class KICOMMON_API EDA_PATTERN_MATCH
{
public:
    struct FIND_RESULT
    {
        int start  = EDA_PATTERN_NOT_FOUND;
        int length = 0;
 
        bool valid() const
        {
            return start != EDA_PATTERN_NOT_FOUND;
        }
 
        explicit operator bool() const
        {
            return valid();
        }
    };
 
    virtual ~EDA_PATTERN_MATCH() {}
 
    virtual bool SetPattern( const wxString& aPattern ) = 0;
 
    virtual wxString const& GetPattern() const = 0;
 
    virtual FIND_RESULT Find( const wxString& aCandidate ) const = 0;
};
 
 
/*
 * Match simple substring
 */
class KICOMMON_API EDA_PATTERN_MATCH_SUBSTR : public EDA_PATTERN_MATCH
{
public:
 
    virtual bool SetPattern( const wxString& aPattern ) override;
    virtual wxString const& GetPattern() const override;
    virtual FIND_RESULT     Find( const wxString& aCandidate ) const override;
 
protected:
    wxString m_pattern;
};
 
 
/*
 * Match regular expression
 */
class KICOMMON_API EDA_PATTERN_MATCH_REGEX : public EDA_PATTERN_MATCH
{
public:
 
    virtual bool SetPattern( const wxString& aPattern ) override;
    virtual wxString const& GetPattern() const override;
    virtual FIND_RESULT     Find( const wxString& aCandidate ) const override;
 
protected:
    wxString m_pattern;
    wxRegEx m_regex;
};
 
 
class KICOMMON_API EDA_PATTERN_MATCH_REGEX_ANCHORED : public EDA_PATTERN_MATCH_REGEX
{
public:
    virtual bool SetPattern( const wxString& aPattern ) override;
};
 
 
class KICOMMON_API EDA_PATTERN_MATCH_WILDCARD : public EDA_PATTERN_MATCH_REGEX
{
public:
 
    virtual bool SetPattern( const wxString& aPattern ) override;
    virtual wxString const& GetPattern() const override;
    virtual FIND_RESULT     Find( const wxString& aCandidate ) const override;
 
protected:
    wxString m_wildcard_pattern;
};
 
 
class KICOMMON_API EDA_PATTERN_MATCH_WILDCARD_ANCHORED : public EDA_PATTERN_MATCH_WILDCARD
{
public:
    virtual bool SetPattern( const wxString& aPattern ) override;
};
 
 
class KICOMMON_API EDA_PATTERN_MATCH_RELATIONAL : public EDA_PATTERN_MATCH
{
public:
    virtual bool SetPattern( const wxString& aPattern ) override;
    virtual wxString const& GetPattern() const override;
    virtual FIND_RESULT     Find( const wxString& aCandidate ) const override;
    int FindOne( const wxString& aCandidate ) const;
 
protected:
 
    enum RELATION { LT, LE, EQ, GE, GT, ANY };
 
    wxString m_pattern;
    wxString m_key;
    RELATION m_relation;
    double   m_value;
 
    static const std::map<wxString, double> m_units;
};
 
 
enum COMBINED_MATCHER_CONTEXT
{
    CTX_LIBITEM,
    CTX_NET,
    CTX_NETCLASS,
    CTX_SIGNAL,
    CTX_SEARCH
};
 
 
class KICOMMON_API EDA_COMBINED_MATCHER
{
public:
    EDA_COMBINED_MATCHER( const wxString& aPattern, COMBINED_MATCHER_CONTEXT aContext );
 
    /*
     * Deleted copy or else we have to implement copy constructors for all EDA_PATTERN_MATCH classes
     * due to this class' m_matchers member being copied
     */
    EDA_COMBINED_MATCHER( EDA_COMBINED_MATCHER const& ) = delete;
 
    /*
     * Deleted copy or else we have to implement copy constructors for all EDA_PATTERN_MATCH classes
     * due to this class' m_matchers member being copied
     */
    EDA_COMBINED_MATCHER& operator=( EDA_COMBINED_MATCHER const& ) = delete;
 
    /*
     * Look in all existing matchers, return the earliest match of any of
     * the existing.
     *
     * @param aTerm                 term to look for
     * @param aMatchersTriggered    out: number of matcher that found the term
     * @param aPostion              out: where the term was found, or EDA_PATTERN_NOT_FOUND
     *
     * @return true if any matchers found the term
     */
    bool Find( const wxString& aTerm, int& aMatchersTriggered, int& aPosition );
 
    bool Find( const wxString& aTerm );
 
    bool StartsWith( const wxString& aTerm );
 
    const wxString& GetPattern() const;
 
    int ScoreTerms( std::vector<SEARCH_TERM>& aWeightedTerms );
 
private:
    // Add matcher if it can compile the pattern.
    void AddMatcher( const wxString& aPattern, std::unique_ptr<EDA_PATTERN_MATCH> aMatcher );
 
    std::vector<std::unique_ptr<EDA_PATTERN_MATCH>> m_matchers;
    wxString m_pattern;
};
 
#endif  // EDA_PATTERN_MATCH_H