kicad/eeschema/sch_io/altium/altium_parser_sch.h

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2020 Thomas Pointhuber <thomas.pointhuber@gmx.at>
 * Copyright (C) 2021-2024 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 ALTIUM_PARSER_SCH_H
#define ALTIUM_PARSER_SCH_H

#include <cstdint>
#include <cstring>
#include <map>
#include <vector>

#include <math/vector2d.h>
#include <wx/string.h>

// this constant specifies a item which is not inside an component
const int ALTIUM_COMPONENT_NONE = -1;

class ALTIUM_BINARY_PARSER;

struct ASCH_STORAGE_FILE
{
    wxString          filename;
    std::vector<char> data;

    explicit ASCH_STORAGE_FILE( const std::map<wxString, wxString>& aProps );
    explicit ASCH_STORAGE_FILE( ALTIUM_BINARY_PARSER& aReader );
};

struct ASCH_ADDITIONAL_FILE
{
    wxString          FileName;
    std::vector<char> Data;

    explicit ASCH_ADDITIONAL_FILE( ALTIUM_BINARY_PARSER& aReader );
};

enum class ALTIUM_SCH_RECORD
{
    UNKNOWN             = -1,

    HEADER              = 0,
    COMPONENT           = 1,
    PIN                 = 2,
    IEEE_SYMBOL         = 3,
    LABEL               = 4,
    BEZIER              = 5,
    POLYLINE            = 6,
    POLYGON             = 7,
    ELLIPSE             = 8,
    PIECHART            = 9,
    ROUND_RECTANGLE     = 10,
    ELLIPTICAL_ARC      = 11,
    ARC                 = 12,
    LINE                = 13,
    RECTANGLE           = 14,
    SHEET_SYMBOL        = 15,
    SHEET_ENTRY         = 16,
    POWER_PORT          = 17,
    PORT                = 18,
    NO_ERC              = 22,
    NET_LABEL           = 25,
    BUS                 = 26,
    WIRE                = 27,
    TEXT_FRAME          = 28,
    JUNCTION            = 29,
    IMAGE               = 30,
    SHEET               = 31,
    SHEET_NAME          = 32,
    FILE_NAME           = 33,
    DESIGNATOR          = 34,
    BUS_ENTRY           = 37,
    TEMPLATE            = 39,
    PARAMETER           = 41,
    PARAMETER_SET       = 43,
    IMPLEMENTATION_LIST = 44,
    IMPLEMENTATION      = 45,
    MAP_DEFINER_LIST    = 46,
    MAP_DEFINER         = 47,
    IMPL_PARAMS         = 48,
    NOTE                = 209,
    COMPILE_MASK        = 211,
    HARNESS_CONNECTOR   = 215,
    HARNESS_ENTRY       = 216,
    HARNESS_TYPE        = 217,
    SIGNAL_HARNESS      = 218,
    BLANKET             = 225,
    HYPERLINK           = 226,
};


enum class ASCH_RECORD_ORIENTATION
{
    RIGHTWARDS = 0, // 0
    UPWARDS    = 1, // 90
    LEFTWARDS  = 2, // 180
    DOWNWARDS  = 3  // 270
};


struct ASCH_OWNER_INTERFACE
{
    int ownerindex;
    int ownerpartid;
    int ownerpartdisplaymode;
    int indexinsheet;
    bool IsNotAccesible;

    explicit ASCH_OWNER_INTERFACE( const std::map<wxString, wxString>& aProps );
};

struct ASCH_FILL_INTERFACE
{
    int AreaColor;
    bool IsSolid;
    bool IsTransparent;

    explicit ASCH_FILL_INTERFACE( const std::map<wxString, wxString>& aProps );
};

struct ASCH_BORDER_INTERFACE
{
    int LineWidth;
    int Color;

    explicit ASCH_BORDER_INTERFACE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_SYMBOL
{
    int      currentpartid;
    int      m_indexInSheet;
    wxString libreference;
    wxString sourcelibraryname;
    wxString componentdescription;

    int      orientation;
    bool     isMirrored;
    VECTOR2I location;

    int partcount;
    int displaymodecount;
    int displaymode;

    explicit ASCH_SYMBOL( const std::map<wxString, wxString>& aProps );
};


struct ASCH_TEMPLATE : ASCH_OWNER_INTERFACE
{
    wxString filename;

    explicit ASCH_TEMPLATE( const std::map<wxString, wxString>& aProps );
};


enum class ASCH_PIN_SYMBOL_EDGE
{
    UNKNOWN                = -1,
    NO_SYMBOL              = 0,
    NEGATED                = 1,
    RIGHTLEFT              = 2,
    CLOCK                  = 3,
    LOW_INPUT              = 4,
    ANALOG_IN              = 5,
    NOLOGICCONNECT         = 6,
    // 7 is missing
    POSTPONE_OUTPUT        = 8,
    OPEN_COLLECTOR         = 9,
    HIZ                    = 10,
    HIGH_CURRENT           = 11,
    PULSE                  = 12,
    SCHMITT                = 13,
    // 14-16 missing
    LOW_OUTPUT             = 17,
    // 18-21 missing
    OPEN_COLLECTOR_PULL_UP = 22,
    OPEN_EMITTER           = 23,
    OPEN_EMITTER_PULL_UP   = 24,
    DIGITAL_IN             = 25,
    // 26-29 missing
    SHIFT_LEFT             = 30,
    // 31 is missing
    OPEN_OUTPUT            = 32,
    LEFTRIGHT              = 33,
    BIDI                   = 34
};

class ASCH_PIN_SYMBOL
{
public:
    enum PTYPE
    {
        UNKNOWN                = -1,
        NO_SYMBOL              = 0,
        NEGATED                = 1,
        RIGHTLEFT              = 2,
        CLOCK                  = 3,
        LOW_INPUT              = 4,
        ANALOG_IN              = 5,
        NOLOGICCONNECT         = 6,
        // 7 is missing
        POSTPONE_OUTPUT        = 8,
        OPEN_COLLECTOR         = 9,
        HIZ                    = 10,
        HIGH_CURRENT           = 11,
        PULSE                  = 12,
        SCHMITT                = 13,
        // 14-16 missing
        LOW_OUTPUT             = 17,
        // 18-21 missing
        OPEN_COLLECTOR_PULL_UP = 22,
        OPEN_EMITTER           = 23,
        OPEN_EMITTER_PULL_UP   = 24,
        DIGITAL_IN             = 25,
        // 26-29 missing
        SHIFT_LEFT             = 30,
        // 31 is missing
        OPEN_OUTPUT            = 32,
        LEFTRIGHT              = 33,
        BIDI                   = 34
    };

    static PTYPE FromInt( int aInt )
    {
        switch( aInt )
        {
        case 0:
            return NO_SYMBOL;
        case 1:
            return NEGATED;
        case 2:
            return RIGHTLEFT;
        case 3:
            return CLOCK;
        case 4:
            return LOW_INPUT;
        case 5:
            return ANALOG_IN;
        case 6:
            return NOLOGICCONNECT;
        case 8:
            return POSTPONE_OUTPUT;
        case 9:
            return OPEN_COLLECTOR;
        case 10:
            return HIZ;
        case 11:
            return HIGH_CURRENT;
        case 12:
            return PULSE;
        case 13:
            return SCHMITT;
        case 17:
            return LOW_OUTPUT;
        case 22:
            return OPEN_COLLECTOR_PULL_UP;
        case 23:
            return OPEN_EMITTER;
        case 24:
            return OPEN_EMITTER_PULL_UP;
        case 25:
            return DIGITAL_IN;
        case 30:
            return SHIFT_LEFT;
        case 32:
            return OPEN_OUTPUT;
        case 33:
            return LEFTRIGHT;
        case 34:
            return BIDI;
        default:
            return UNKNOWN;
        }
    }
};


enum class ASCH_PIN_ELECTRICAL
{
    UNKNOWN = -1,

    INPUT          = 0,
    BIDI           = 1,
    OUTPUT         = 2,
    OPEN_COLLECTOR = 3,
    PASSIVE        = 4,
    TRISTATE       = 5,
    OPEN_EMITTER   = 6,
    POWER          = 7
};


struct ASCH_PIN : ASCH_OWNER_INTERFACE
{
    wxString name;
    wxString text;
    wxString designator;

    ASCH_PIN_SYMBOL::PTYPE symbolOuter;
    ASCH_PIN_SYMBOL::PTYPE symbolInner;

    ASCH_PIN_SYMBOL::PTYPE symbolOuterEdge;
    ASCH_PIN_SYMBOL::PTYPE symbolInnerEdge;

    ASCH_PIN_ELECTRICAL     electrical;
    ASCH_RECORD_ORIENTATION orientation;

    VECTOR2I location;
    int      pinlength;

    VECTOR2I kicadLocation; // location of pin in KiCad without rounding error

    bool showPinName;
    bool showDesignator;
    bool hidden;
    bool locked;

    explicit ASCH_PIN( const std::map<wxString, wxString>& aProps );
};


enum class ASCH_LABEL_JUSTIFICATION
{
    UNKNOWN = -1,

    BOTTOM_LEFT   = 0,
    BOTTOM_CENTER = 1,
    BOTTOM_RIGHT  = 2,
    CENTER_LEFT   = 3,
    CENTER_CENTER = 4,
    CENTER_RIGHT  = 5,
    TOP_LEFT      = 6,
    TOP_CENTER    = 7,
    TOP_RIGHT     = 8
};


enum class ASCH_TEXT_FRAME_ALIGNMENT
{
    LEFT    = 1,
    CENTER  = 2,
    RIGHT   = 3
};


struct ASCH_LABEL : ASCH_OWNER_INTERFACE
{
    VECTOR2I location;

    wxString text;
    int      textColor;

    int  fontId;
    bool isMirrored;

    ASCH_LABEL_JUSTIFICATION justification;
    ASCH_RECORD_ORIENTATION  orientation;

    explicit ASCH_LABEL( const std::map<wxString, wxString>& aProps );
};

struct ASCH_HYPERLINK : ASCH_LABEL
{
    wxString url;

    explicit ASCH_HYPERLINK( const std::map<wxString, wxString>& aProps );
};


struct ASCH_TEXT_FRAME : ASCH_OWNER_INTERFACE
{
    VECTOR2I Location;
    VECTOR2I Size;

    // have both coordinates, for convenience
    VECTOR2I BottomLeft;
    VECTOR2I TopRight;

    wxString Text;

    bool IsWordWrapped; // to do when kicad supports this
    bool ShowBorder;

    int  FontID;
    int  TextMargin; // to do when kicad supports this
    int  AreaColor;
    int  TextColor;
    int  BorderColor;
    int  BorderWidth;
    bool isSolid;

    ASCH_TEXT_FRAME_ALIGNMENT Alignment;

    explicit ASCH_TEXT_FRAME( const std::map<wxString, wxString>& aProps );
};


struct ASCH_NOTE : ASCH_TEXT_FRAME
{
    wxString author;

    explicit ASCH_NOTE( const std::map<wxString, wxString>& aProperties );
};


struct ASCH_BEZIER : ASCH_OWNER_INTERFACE, ASCH_BORDER_INTERFACE
{
    std::vector<VECTOR2I> points;

    explicit ASCH_BEZIER( const std::map<wxString, wxString>& aProps );
};


enum class ASCH_POLYLINE_LINESTYLE
{
    SOLID       = 0,
    DASHED      = 1,
    DOTTED      = 2,
    DASH_DOTTED = 3
};


enum class ASCH_SHEET_ENTRY_SIDE
{
    LEFT   = 0,
    RIGHT  = 1,
    TOP    = 2,
    BOTTOM = 3
};


struct ASCH_POLYLINE : ASCH_OWNER_INTERFACE, ASCH_BORDER_INTERFACE
{
    std::vector<VECTOR2I> Points;

    ASCH_POLYLINE_LINESTYLE LineStyle;

    explicit ASCH_POLYLINE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_POLYGON : ASCH_OWNER_INTERFACE, ASCH_FILL_INTERFACE, ASCH_BORDER_INTERFACE
{
    std::vector<VECTOR2I> points;

    explicit ASCH_POLYGON( const std::map<wxString, wxString>& aProps );
};


struct ASCH_ROUND_RECTANGLE : ASCH_OWNER_INTERFACE, ASCH_FILL_INTERFACE, ASCH_BORDER_INTERFACE
{
    VECTOR2I BottomLeft;
    VECTOR2I TopRight;

    VECTOR2I CornerRadius;

    explicit ASCH_ROUND_RECTANGLE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_ARC : ASCH_OWNER_INTERFACE, ASCH_BORDER_INTERFACE, ASCH_FILL_INTERFACE
{
    bool     m_IsElliptical;
    VECTOR2I m_Center;
    int      m_Radius;
    int      m_SecondaryRadius;
    double   m_StartAngle;
    double   m_EndAngle;

    explicit ASCH_ARC( const std::map<wxString, wxString>& aProps );
};


struct ASCH_PIECHART : ASCH_ARC
{
    explicit ASCH_PIECHART( const std::map<wxString, wxString>& aProps );
};


struct ASCH_ELLIPSE : ASCH_OWNER_INTERFACE, ASCH_FILL_INTERFACE, ASCH_BORDER_INTERFACE
{
    VECTOR2I Center;
    int      Radius;
    double   SecondaryRadius;

    explicit ASCH_ELLIPSE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_LINE : ASCH_OWNER_INTERFACE, ASCH_BORDER_INTERFACE
{
    VECTOR2I point1;
    VECTOR2I point2;

    ASCH_POLYLINE_LINESTYLE LineStyle;

    explicit ASCH_LINE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_SIGNAL_HARNESS : ASCH_OWNER_INTERFACE
{
    VECTOR2I Point1;
    VECTOR2I Point2;

    std::vector<VECTOR2I> Points;

    int Color;
    int LineWidth;

    explicit ASCH_SIGNAL_HARNESS( const std::map<wxString, wxString>& aProps );
};


struct ASCH_HARNESS_CONNECTOR : ASCH_OWNER_INTERFACE
{
    VECTOR2I Location;
    VECTOR2I Size;

    int AreaColor;
    int Color;
    int LineWidth;
    //int locationX; // keep just in case
    //int locationY;
    int LocationPrimaryConnectionPosition;
    //int xSize;     // keep just in case
    //int ySize;

    explicit ASCH_HARNESS_CONNECTOR( const std::map<wxString, wxString>& aProps );
};


struct ASCH_HARNESS_ENTRY : ASCH_OWNER_INTERFACE
{
    int AreaColor;
    int Color;
    int DistanceFromTop;
    int TextColor;
    int TextFontID;
    int TextStyle;

    bool OwnerIndexAdditionalList; // what is that?

    wxString Name;
    ASCH_SHEET_ENTRY_SIDE Side;

    explicit ASCH_HARNESS_ENTRY( const std::map<wxString, wxString>& aProps );
};


struct ASCH_HARNESS_TYPE : ASCH_OWNER_INTERFACE
{
    int Color;
    int FontID;

    bool IsHidden;
    bool OwnerIndexAdditionalList; // what is that?

    VECTOR2I Location;

    wxString Text;

    explicit ASCH_HARNESS_TYPE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_RECTANGLE : ASCH_OWNER_INTERFACE, ASCH_FILL_INTERFACE, ASCH_BORDER_INTERFACE
{
    VECTOR2I BottomLeft;
    VECTOR2I TopRight;

    explicit ASCH_RECTANGLE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_SHEET_SYMBOL : ASCH_OWNER_INTERFACE
{
    VECTOR2I location;
    VECTOR2I size;

    bool isSolid;

    int color;
    int areacolor;

    explicit ASCH_SHEET_SYMBOL( const std::map<wxString, wxString>& aProps );
};


enum class ASCH_PORT_IOTYPE
{
    UNSPECIFIED = 0,
    OUTPUT      = 1,
    INPUT       = 2,
    BIDI        = 3,
};


enum class ASCH_PORT_STYLE
{
    NONE_HORIZONTAL = 0,
    LEFT            = 1,
    RIGHT           = 2,
    LEFT_RIGHT      = 3,
    NONE_VERTICAL   = 4,
    TOP             = 5,
    BOTTOM          = 6,
    TOP_BOTTOM      = 7
};


struct ASCH_SHEET_ENTRY : ASCH_OWNER_INTERFACE
{
    int distanceFromTop;

    ASCH_SHEET_ENTRY_SIDE side;
    ASCH_PORT_IOTYPE      iotype;
    ASCH_PORT_STYLE       style;

    wxString name;

    explicit ASCH_SHEET_ENTRY( const std::map<wxString, wxString>& aProps );
};


enum class ASCH_POWER_PORT_STYLE
{
    UNKNOWN = -1,

    CIRCLE            = 0,
    ARROW             = 1,
    BAR               = 2,
    WAVE              = 3,
    POWER_GROUND      = 4,
    SIGNAL_GROUND     = 5,
    EARTH             = 6,
    GOST_ARROW        = 7,
    GOST_POWER_GROUND = 8,
    GOST_EARTH        = 9,
    GOST_BAR          = 10
};


struct ASCH_POWER_PORT : ASCH_OWNER_INTERFACE
{
    wxString text;
    bool     showNetName;

    VECTOR2I                location;
    ASCH_RECORD_ORIENTATION orientation;
    ASCH_POWER_PORT_STYLE   style;

    explicit ASCH_POWER_PORT( const std::map<wxString, wxString>& aProps );
};


struct ASCH_PORT : ASCH_OWNER_INTERFACE
{
    wxString Name;
    wxString HarnessType;

    VECTOR2I Location;
    int      Width;
    int      Height;
    int      AreaColor;
    int      Color;
    int      TextColor;
    int      FontID;

    ASCH_TEXT_FRAME_ALIGNMENT Alignment;

    ASCH_PORT_IOTYPE IOtype;
    ASCH_PORT_STYLE  Style;

    explicit ASCH_PORT( const std::map<wxString, wxString>& aProps );
};


struct ASCH_NO_ERC
{
    VECTOR2I location;

    bool isActive;
    bool suppressAll;

    explicit ASCH_NO_ERC( const std::map<wxString, wxString>& aProps );
};


struct ASCH_NET_LABEL : ASCH_OWNER_INTERFACE
{
    wxString text;

    VECTOR2I location;

    ASCH_LABEL_JUSTIFICATION justification;
    ASCH_RECORD_ORIENTATION orientation;

    explicit ASCH_NET_LABEL( const std::map<wxString, wxString>& aProps );
};


struct ASCH_BUS : ASCH_OWNER_INTERFACE
{
    int lineWidth;

    std::vector<VECTOR2I> points;

    explicit ASCH_BUS( const std::map<wxString, wxString>& aProps );
};


struct ASCH_WIRE : ASCH_OWNER_INTERFACE
{
    int lineWidth;

    std::vector<VECTOR2I> points;

    explicit ASCH_WIRE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_JUNCTION : ASCH_OWNER_INTERFACE
{
    VECTOR2I location;

    explicit ASCH_JUNCTION( const std::map<wxString, wxString>& aProps );
};


struct ASCH_IMAGE : ASCH_OWNER_INTERFACE, ASCH_BORDER_INTERFACE
{
    wxString filename;
    VECTOR2I location;
    VECTOR2I corner;

    bool embedimage;
    bool keepaspect;

    explicit ASCH_IMAGE( const std::map<wxString, wxString>& aProps );
};


struct ASCH_SHEET_FONT : ASCH_OWNER_INTERFACE
{
    wxString FontName;

    int Size;
    int Rotation;
    int AreaColor;

    bool Italic;
    bool Bold;
    bool Underline;

    explicit ASCH_SHEET_FONT( const std::map<wxString, wxString>& aProps, int aId );
};


enum class ASCH_SHEET_SIZE
{
    UNKNOWN = -1, // use A4

    A4      = 0,  // 1150 × 760
    A3      = 1,  // 1550 × 1110
    A2      = 2,  // 2230 × 1570
    A1      = 3,  // 3150 × 2230
    A0      = 4,  // 4460 × 3150
    A       = 5,  // 950 × 750
    B       = 6,  // 1500 × 950
    C       = 7,  // 2000 × 1500
    D       = 8,  // 3200 × 2000
    E       = 9,  // 4200 × 3200
    LETTER  = 10, // 1100 × 850
    LEGAL   = 11, // 1400 × 850
    TABLOID = 12, // 1700 × 1100
    ORCAD_A = 13, // 990 × 790
    ORCAD_B = 14, // 1540 × 990
    ORCAD_C = 15, // 2060 × 1560
    ORCAD_D = 16, // 3260 × 2060
    ORCAD_E = 17  // 4280 × 3280
};

VECTOR2I ASchSheetGetSize( ASCH_SHEET_SIZE aSheetSize );


enum class ASCH_SHEET_WORKSPACEORIENTATION
{
    LANDSCAPE = 0,
    PORTRAIT  = 1
};


struct ASCH_SHEET : ASCH_OWNER_INTERFACE
{
    std::vector<ASCH_SHEET_FONT> fonts;

    bool     useCustomSheet;
    VECTOR2I customSize;

    ASCH_SHEET_SIZE                 sheetSize;
    ASCH_SHEET_WORKSPACEORIENTATION sheetOrientation;

    explicit ASCH_SHEET( const std::map<wxString, wxString>& aProps );
};


struct ASCH_SHEET_NAME : ASCH_OWNER_INTERFACE
{
    wxString text;

    ASCH_RECORD_ORIENTATION orientation;
    VECTOR2I                location;

    bool isHidden;

    explicit ASCH_SHEET_NAME( const std::map<wxString, wxString>& aProps );
};


struct ASCH_FILE_NAME : ASCH_OWNER_INTERFACE
{
    wxString text;

    ASCH_RECORD_ORIENTATION orientation;
    VECTOR2I                location;

    bool isHidden;

    explicit ASCH_FILE_NAME( const std::map<wxString, wxString>& aProps );
};


struct ASCH_DESIGNATOR : ASCH_OWNER_INTERFACE
{
    wxString name;
    wxString text;
    int      fontId;

    ASCH_RECORD_ORIENTATION  orientation;
    ASCH_LABEL_JUSTIFICATION justification;
    VECTOR2I                 location;

    explicit ASCH_DESIGNATOR( const std::map<wxString, wxString>& aProps );
};


struct ASCH_IMPLEMENTATION : ASCH_OWNER_INTERFACE
{
    wxString name;
    wxString type;
    wxString libname;
    wxString description;
    bool isCurrent;

    explicit ASCH_IMPLEMENTATION( const std::map<wxString, wxString>& aProps );
};


struct ASCH_IMPLEMENTATION_LIST : ASCH_OWNER_INTERFACE
{
    explicit ASCH_IMPLEMENTATION_LIST( const std::map<wxString, wxString>& aProps );
};


struct ASCH_BUS_ENTRY : ASCH_OWNER_INTERFACE
{
    VECTOR2I location;
    VECTOR2I corner;

    explicit ASCH_BUS_ENTRY( const std::map<wxString, wxString>& aProps );
};


struct ASCH_PARAMETER : ASCH_OWNER_INTERFACE
{
    VECTOR2I                 location;
    ASCH_LABEL_JUSTIFICATION justification;
    ASCH_RECORD_ORIENTATION  orientation;

    wxString name;
    wxString text;

    bool isHidden;
    bool isMirrored;
    bool isShowName;
    int  fontId;

    explicit ASCH_PARAMETER( const std::map<wxString, wxString>& aProps );
};

#endif //ALTIUM_PARSER_SCH_H