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Annotation of mandoc/eqn.h, Revision 1.1

1.1     ! schwarze    1: /*     $Id$ */
        !             2: /*
        !             3:  * Copyright (c) 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
        !             4:  *
        !             5:  * Permission to use, copy, modify, and distribute this software for any
        !             6:  * purpose with or without fee is hereby granted, provided that the above
        !             7:  * copyright notice and this permission notice appear in all copies.
        !             8:  *
        !             9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
        !            10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
        !            12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            16:  *
        !            17:  * Public data types for eqn(7) syntax trees.
        !            18:  */
        !            19:
        !            20: enum   eqn_boxt {
        !            21:        EQN_TEXT,       /* Text, e.g. number, variable, operator, ... */
        !            22:        EQN_SUBEXPR,    /* Nested eqn(7) subexpression. */
        !            23:        EQN_LIST,       /* List, for example in braces. */
        !            24:        EQN_PILE,       /* Vertical pile. */
        !            25:        EQN_MATRIX      /* List of columns. */
        !            26: };
        !            27:
        !            28: enum   eqn_fontt {
        !            29:        EQNFONT_NONE = 0,
        !            30:        EQNFONT_ROMAN,
        !            31:        EQNFONT_BOLD,
        !            32:        EQNFONT_FAT,
        !            33:        EQNFONT_ITALIC,
        !            34:        EQNFONT__MAX
        !            35: };
        !            36:
        !            37: enum   eqn_post {
        !            38:        EQNPOS_NONE = 0,
        !            39:        EQNPOS_SUP,
        !            40:        EQNPOS_SUBSUP,
        !            41:        EQNPOS_SUB,
        !            42:        EQNPOS_TO,
        !            43:        EQNPOS_FROM,
        !            44:        EQNPOS_FROMTO,
        !            45:        EQNPOS_OVER,
        !            46:        EQNPOS_SQRT,
        !            47:        EQNPOS__MAX
        !            48: };
        !            49:
        !            50:  /*
        !            51:  * A "box" is a parsed mathematical expression as defined by the eqn.7
        !            52:  * grammar.
        !            53:  */
        !            54: struct eqn_box {
        !            55:        struct eqn_box   *parent;
        !            56:        struct eqn_box   *prev;
        !            57:        struct eqn_box   *next;
        !            58:        struct eqn_box   *first;   /* First child node. */
        !            59:        struct eqn_box   *last;    /* Last child node. */
        !            60:        char             *text;    /* Text (or NULL). */
        !            61:        char             *left;    /* Left-hand fence. */
        !            62:        char             *right;   /* Right-hand fence. */
        !            63:        char             *top;     /* Symbol above. */
        !            64:        char             *bottom;  /* Symbol below. */
        !            65:        size_t            expectargs; /* Maximal number of arguments. */
        !            66:        size_t            args;    /* Actual number of arguments. */
        !            67:        int               size;    /* Font size. */
        !            68: #define        EQN_DEFSIZE       INT_MIN
        !            69:        enum eqn_boxt     type;    /* Type of node. */
        !            70:        enum eqn_fontt    font;    /* Font in this box. */
        !            71:        enum eqn_post     pos;     /* Position of the next box. */
        !            72: };

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