70 lines
1.3 KiB
C
70 lines
1.3 KiB
C
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/* Copyright (C) Boris Nikolaus, Germany, 1996-1997. All rights reserved. */
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extern int linedirective;
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extern int lineno;
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extern char filename[];
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extern char outfilename[];
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extern char incfilename[];
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extern FILE *fout, *finc;
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extern char *startsym;
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extern char *prefix;
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typedef struct item_s {
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int isnonterm;
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int isexternal;
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char *tag;
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char *identifier;
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char *altidentifier;
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char **args;
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struct item_s **items;
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int empty;
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int checked;
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} item_t;
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extern item_t symbols[];
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extern int nsymbols;
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extern item_t *items[];
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extern int nitems;
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struct bounds_s {
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unsigned lower; /* 0 for no lower bound */
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unsigned upper; /* 0 for no upper bound */
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};
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struct rhs_s {
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enum { eCCode, eItem, eSequence, eNode, eBounded, eAlternative } type;
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union {
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struct {
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char *ccode;
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int line;
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int column;
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char *file;
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} ccode;
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struct {
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char *identifier;
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char *args;
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} item;
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struct {
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struct rhs_s *element;
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struct rhs_s *next;
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} sequence, alternative;
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struct {
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struct rhs_s *left;
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struct rhs_s *right;
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} node;
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struct {
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struct bounds_s bounds;
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struct rhs_s *items;
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} bounded;
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} u;
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};
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struct token_s {
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char *identifier;
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char *altidentifier;
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};
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struct nterm_s {
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char *identifier;
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char **tags;
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};
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struct lhs_s {
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char *identifier;
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char *args;
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};
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