X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/a70083a3ed3fc3f69e0bed00220614f9d8263994..e9f87b5b7df2e328d2e4196d276c0d96594c906b:/src/lalr.h?ds=sidebyside diff --git a/src/lalr.h b/src/lalr.h index c0abb2c7..77a5d9df 100644 --- a/src/lalr.h +++ b/src/lalr.h @@ -1,5 +1,5 @@ /* Compute look-ahead criteria for bison, - Copyright (C) 1984, 1986, 1989 Free Software Foundation, Inc. + Copyright 1984, 1986, 1989, 2000 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -35,25 +35,20 @@ void lalr PARAMS ((void)); /* lalr() builds these data structures. */ -/* goto_map, from_state and to_state --record each shift transition +/* GOTO_MAP, FROM_STATE and TO_STATE -- record each shift transition which accepts a variable (a nonterminal). - from_state[t] is the state number which a transition leads from and - to_state[t] is the state number it leads to. All the transitions - that accept a particular variable are grouped together and - goto_map[i - ntokens] is the index in from_state and to_state of - the first of them. */ + FROM_STATE[T] -- state number which a transition leads from. + TO_STATE[T] -- state number it leads to. + + All the transitions that accept a particular variable are grouped + together and GOTO_MAP[I - NTOKENS] is the index in FROM_STATE and + TO_STATE of the first of them. */ extern short *goto_map; extern short *from_state; extern short *to_state; -/* CONSISTENT[S] is nonzero if no lookahead is needed to decide what - to do in state S. */ - -extern char *consistent; - - /* LARULENO is a vector which records the rules that need lookahead in various states. The elements of LARULENO that apply to state S are those from LOOKAHEADS[S] through LOOKAHEADS[S+1]-1. Each element @@ -71,15 +66,12 @@ extern short *LAruleno; it is a conflict. */ extern unsigned *LA; +#define LA(Rule) (LA + (Rule) * tokensetsize) -extern int tokensetsize; -extern short *lookaheads; -extern short *accessing_symbol; -extern core **state_table; -extern shifts **shift_table; -extern reductions **reduction_table; - +/* All the states, indexed by the state number. */ +extern state_t **states; +extern int tokensetsize; #endif /* !LALR_H_ */