-struct tbl_opts {
- char tab; /* cell-separator */
- char decimal; /* decimal point */
- int opts;
-#define TBL_OPT_CENTRE (1 << 0)
-#define TBL_OPT_EXPAND (1 << 1)
-#define TBL_OPT_BOX (1 << 2)
-#define TBL_OPT_DBOX (1 << 3)
-#define TBL_OPT_ALLBOX (1 << 4)
-#define TBL_OPT_NOKEEP (1 << 5)
-#define TBL_OPT_NOSPACE (1 << 6)
-#define TBL_OPT_NOWARN (1 << 7)
- int cols; /* number of columns */
- int lvert; /* width of left vertical line */
- int rvert; /* width of right vertical line */
-};
-
-enum tbl_cellt {
- TBL_CELL_CENTRE, /* c, C */
- TBL_CELL_RIGHT, /* r, R */
- TBL_CELL_LEFT, /* l, L */
- TBL_CELL_NUMBER, /* n, N */
- TBL_CELL_SPAN, /* s, S */
- TBL_CELL_LONG, /* a, A */
- TBL_CELL_DOWN, /* ^ */
- TBL_CELL_HORIZ, /* _, - */
- TBL_CELL_DHORIZ, /* = */
- TBL_CELL_MAX
-};
-
-/*
- * A cell in a layout row.
- */
-struct tbl_cell {
- struct tbl_cell *next;
- int vert; /* width of subsequent vertical line */
- enum tbl_cellt pos;
- size_t spacing;
- int col; /* column number, starting from 0 */
- int flags;
-#define TBL_CELL_TALIGN (1 << 0) /* t, T */
-#define TBL_CELL_BALIGN (1 << 1) /* d, D */
-#define TBL_CELL_BOLD (1 << 2) /* fB, B, b */
-#define TBL_CELL_ITALIC (1 << 3) /* fI, I, i */
-#define TBL_CELL_EQUAL (1 << 4) /* e, E */
-#define TBL_CELL_UP (1 << 5) /* u, U */
-#define TBL_CELL_WIGN (1 << 6) /* z, Z */
-#define TBL_CELL_WMAX (1 << 7) /* x, X */
-};
-
-/*
- * A layout row.
- */
-struct tbl_row {
- struct tbl_row *next;
- struct tbl_cell *first;
- struct tbl_cell *last;
- int vert; /* width of left vertical line */
-};
-
-enum tbl_datt {
- TBL_DATA_NONE, /* has no data */
- TBL_DATA_DATA, /* consists of data/string */
- TBL_DATA_HORIZ, /* horizontal line */
- TBL_DATA_DHORIZ, /* double-horizontal line */
- TBL_DATA_NHORIZ, /* squeezed horizontal line */
- TBL_DATA_NDHORIZ /* squeezed double-horizontal line */
-};
-
-/*
- * A cell within a row of data. The "string" field contains the actual
- * string value that's in the cell. The rest is layout.
- */
-struct tbl_dat {
- struct tbl_cell *layout; /* layout cell */
- int spans; /* how many spans follow */
- struct tbl_dat *next;
- char *string; /* data (NULL if not TBL_DATA_DATA) */
- enum tbl_datt pos;
-};
-
-enum tbl_spant {
- TBL_SPAN_DATA, /* span consists of data */
- TBL_SPAN_HORIZ, /* span is horizontal line */
- TBL_SPAN_DHORIZ /* span is double horizontal line */
-};
-
-/*
- * A row of data in a table.
- */
-struct tbl_span {
- struct tbl_opts *opts;
- struct tbl_row *layout; /* layout row */
- struct tbl_dat *first;
- struct tbl_dat *last;
- struct tbl_span *prev;
- struct tbl_span *next;
- int line; /* parse line */
- enum tbl_spant pos;
-};
-
-enum eqn_boxt {
- EQN_ROOT, /* root of parse tree */
- EQN_TEXT, /* text (number, variable, whatever) */
- EQN_SUBEXPR, /* nested `eqn' subexpression */
- EQN_LIST, /* list (braces, etc.) */
- EQN_LISTONE, /* singleton list */
- EQN_PILE, /* vertical pile */
- EQN_MATRIX /* pile of piles */
-};
-
-enum eqn_fontt {
- EQNFONT_NONE = 0,
- EQNFONT_ROMAN,
- EQNFONT_BOLD,
- EQNFONT_FAT,
- EQNFONT_ITALIC,
- EQNFONT__MAX
-};
-
-enum eqn_post {
- EQNPOS_NONE = 0,
- EQNPOS_SUP,
- EQNPOS_SUBSUP,
- EQNPOS_SUB,
- EQNPOS_TO,
- EQNPOS_FROM,
- EQNPOS_FROMTO,
- EQNPOS_OVER,
- EQNPOS_SQRT,
- EQNPOS__MAX
-};
-
-enum eqn_pilet {
- EQNPILE_NONE = 0,
- EQNPILE_PILE,
- EQNPILE_CPILE,
- EQNPILE_RPILE,
- EQNPILE_LPILE,
- EQNPILE_COL,
- EQNPILE_CCOL,
- EQNPILE_RCOL,
- EQNPILE_LCOL,
- EQNPILE__MAX
-};
-
- /*
- * A "box" is a parsed mathematical expression as defined by the eqn.7
- * grammar.
- */
-struct eqn_box {
- int size; /* font size of expression */
-#define EQN_DEFSIZE INT_MIN
- enum eqn_boxt type; /* type of node */
- struct eqn_box *first; /* first child node */
- struct eqn_box *last; /* last child node */
- struct eqn_box *next; /* node sibling */
- struct eqn_box *prev; /* node sibling */
- struct eqn_box *parent; /* node sibling */
- char *text; /* text (or NULL) */
- char *left; /* fence left-hand */
- char *right; /* fence right-hand */
- char *top; /* expression over-symbol */
- char *bottom; /* expression under-symbol */
- size_t args; /* arguments in parent */
- size_t expectargs; /* max arguments in parent */
- enum eqn_post pos; /* position of next box */
- enum eqn_fontt font; /* font of box */
- enum eqn_pilet pile; /* equation piling */
-};
-
-/*
- * An equation consists of a tree of expressions starting at a given
- * line and position.
- */
-struct eqn {
- char *name; /* identifier (or NULL) */
- struct eqn_box *root; /* root mathematical expression */
- int ln; /* invocation line */
- int pos; /* invocation position */
-};
-
-/*
- * Parse options.
- */
-#define MPARSE_MDOC 1 /* assume -mdoc */
-#define MPARSE_MAN 2 /* assume -man */
-#define MPARSE_SO 4 /* honour .so requests */
-#define MPARSE_QUICK 8 /* abort the parse early */
-#define MPARSE_UTF8 16 /* accept UTF-8 input */
-#define MPARSE_LATIN1 32 /* accept ISO-LATIN-1 input */
-
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