1: /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1984. */
   2: /* $Header: supr.h,v 2.2 84/07/11 15:20:05 guido Exp $ */
   3: 
   4: /*
   5:  * B editor -- Superstructure for fine focusing.
   6:  */
   7: 
   8: /*
   9:  * Interpretation of mode and s1, s2, s3:
  10:  * WHOLE: whole node is the focus;
  11:  * SUBSET: s1/2, s2/2 are first and last child number under focus;
  12:  *         even means fixed text, odd means child node;
  13:  * SUBRANGE: s1/2 is fixed text number; s2, s3 are 1st&last char;
  14:  *         if s1 is odd, ditto for child which must be "text";
  15:  * VHOLE: s1/2 is fixed text number; volatile hole before char s2;
  16:  *         if s1 is odd, ditto for child which must be "text".
  17:  * ATEND: a volatile hole just after the entire node.
  18:  * ATBEGIN: ditto just before it.
  19:  * SUBLIST: s3 indicates how many times downrite() bring us
  20:  *         beyond the focus (i.e., the focus is the subtree below
  21:  *         ep->focus EXCLUDING the subtree reached after s3 times
  22:  *         downrite().  Note s3 > 0.
  23:  * FHOLE: Like VHOLE but in Fixed text.
  24:  *
  25:  * It is assumed that if the focus is a substring of fixed text
  26:  * (SUBRANGE, VHOLE), it does not begin or end with lay-out of spaces.
  27:  */
  28: 
  29: #define WHOLE   'W'
  30: #define SUBSET  'S'
  31: #define SUBRANGE    'R'
  32: #define VHOLE   'V'
  33: #define ATEND   'E'
  34: #define ATBEGIN 'B'
  35: #define SUBLIST 'L'
  36: #define FHOLE   'F'
  37: 
  38: typedef struct {
  39:     path focus;
  40:     char mode;
  41:     char /*bool*/ copyflag;
  42:     char /*bool*/ spflag;
  43:     char /*bool*/ changed;
  44:     short /*0..2*MAXCHILD+1*/ s1;
  45:     short s2;
  46:     short s3;
  47:     short highest;
  48:     value copybuffer; /* Actually, a queue */
  49:     value oldmacro; /* A text */
  50:     value newmacro; /* A text, too */
  51:     int generation;
  52: } environ;
  53: 
  54: #ifdef STRUCTASS
  55: #define Emove(e1, e2) ((e2) = (e1))
  56: #else !STRUCTASS
  57: #define Emove(e1, e2) emove(&(e1), &(e2))
  58: #endif !STRUCTASS
  59: #define Ecopy(e1, e2) ecopy(&(e1), &(e2))
  60: #define Erelease(e) erelease(&(e))

Defined macros

Usage of this include

Last modified: 1985-08-27
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