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Annotation of 43BSD/contrib/B/src/bint/b2exp.h, revision 1.1.1.1

1.1       root        1: /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
                      2: 
                      3: /*
                      4:   $Header: b2exp.h,v 1.4 85/08/22 16:42:25 timo Exp $
                      5: */
                      6: 
                      7: /* General definitions for parsing expressions */
                      8: 
                      9: typedef struct { bool parsed, prop, trim;
                     10:                 intlet state, level, field;
                     11:                 value comp;
                     12:                } expadm;
                     13: 
                     14: typedef struct { bool prop, trim;
                     15:                 intlet level, field;
                     16:                 parsetree node;
                     17:                } unpadm;
                     18: 
                     19: #define Parsed(adm)    ((adm)->parsed)
                     20: #define Prop(adm)      ((adm)->prop)
                     21: #define Trim(adm)      ((adm)->trim)
                     22: #define State(adm)     ((adm)->state)
                     23: #define Level(adm)     ((adm)->level)
                     24: #define N_fld(adm)     ((adm)->field)
                     25: #define Unp_comp(adm)  ((adm)->comp)
                     26: #define Node(adm)      ((adm)->node)
                     27: 
                     28: /* ********************************************************************        */
                     29: /* Levels:                                                             */
                     30: /*                                                                     */
                     31: #define L_bottom       0
                     32: #define L_term         1 /* plus, minus, join */
                     33: #define L_factor       2 /* times, over */
                     34: #define L_power                3 /* power */
                     35: #define L_number       4 /* number  */
                     36: #define L_expr         5 /* tag, repeat_text, center, (left|right)_adjust */
                     37: 
                     38: #define Prio \
                     39:        MESS(1900, "cannot determine priorities; use ( and ) to resolve")
                     40: 
                     41: /* ******************************************************************** */
                     42: /* States:                                                             */
                     43: /*                                                                     */
                     44: #define S_t    1
                     45: #define S_tt   2
                     46: #define S_else 3
                     47: 
                     48: /* ******************************************************************** */
                     49: 
                     50: bool b_about();
                     51: bool b_numtor();
                     52: bool b_denomtor();
                     53: bool b_plus();
                     54: bool b_minus();
                     55: bool b_number();
                     56: bool b_behead();
                     57: bool b_curtail();
                     58: #ifdef NOT_USED
                     59: bool b_times();
                     60: bool b_over();
                     61: bool b_power();
                     62: bool b_join();
                     63: bool b_reptext();
                     64: bool b_center();
                     65: bool b_leftadj();
                     66: bool b_rightadj();
                     67: #endif

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