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1.1 ! root 1: /* ndu.h 4.1 85/03/19 */ ! 2: ! 3: /* ! 4: * This file defines the basic tree node data structure for the PCC. ! 5: */ ! 6: ! 7: union ndu { ! 8: struct { /* interior node */ ! 9: int op; ! 10: int rall; ! 11: TWORD type; ! 12: int su; ! 13: #ifndef FLEXNAMES ! 14: char name[NCHNAM]; ! 15: #else ! 16: char *name; ! 17: int stalign; ! 18: #endif ! 19: NODE *left; ! 20: NODE *right; ! 21: } in; ! 22: struct { /* terminal node */ ! 23: int op; ! 24: int rall; ! 25: TWORD type; ! 26: int su; ! 27: #ifndef FLEXNAMES ! 28: char name[NCHNAM]; ! 29: #else ! 30: char *name; ! 31: int stalign; ! 32: #endif ! 33: CONSZ lval; ! 34: int rval; ! 35: } tn; ! 36: struct { /* branch node */ ! 37: int op; ! 38: int rall; ! 39: TWORD type; ! 40: int su; ! 41: int label; /* for use with branching */ ! 42: } bn; ! 43: struct { /* structure node */ ! 44: int op; ! 45: int rall; ! 46: TWORD type; ! 47: int su; ! 48: int stsize; /* sizes of structure objects */ ! 49: int stalign; /* alignment of structure objects */ ! 50: } stn; ! 51: struct { /* front node */ ! 52: int op; ! 53: int cdim; ! 54: TWORD type; ! 55: int csiz; ! 56: } fn; ! 57: /* ! 58: * This structure is used when a double precision ! 59: * floating point constant is being computed ! 60: */ ! 61: struct { /* DCON node */ ! 62: int op; ! 63: TWORD type; ! 64: int cdim; ! 65: int csiz; ! 66: double dval; ! 67: } dpn; ! 68: /* ! 69: * This structure is used when a single precision ! 70: * floating point constant is being computed ! 71: */ ! 72: struct { /* FCON node */ ! 73: int op; ! 74: TWORD type; ! 75: int cdim; ! 76: int csiz; ! 77: float fval; ! 78: } fpn; ! 79: };
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