X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/110ef36a1a93c60cc83627492de40cb95aedf9b1..7d424de14c0385012d328642bec6874c8e6cef17:/src/lalr.c diff --git a/src/lalr.c b/src/lalr.c index 857efe95..843d37a7 100644 --- a/src/lalr.c +++ b/src/lalr.c @@ -1,7 +1,7 @@ /* Compute lookahead criteria for Bison. Copyright (C) 1984, 1986, 1989, 2000, 2001, 2002, 2003, 2004, 2005, - 2006, 2007, 2008, 2009 Free Software Foundation, Inc. + 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -19,8 +19,7 @@ along with this program. If not, see . */ -/* Compute how to make the finite state machine deterministic; find - which rules need lookahead in each state, and which lookahead +/* Find which rules need lookahead in each state, and which lookahead tokens they accept. */ #include @@ -344,10 +343,11 @@ state_lookahead_tokens_count (state *s, bool default_reduction_only_for_accept) /* We need a lookahead either to distinguish different reductions (i.e., there are two or more), or to distinguish a reduction from a shift. Otherwise, it is straightforward, and the state is - `consistent'. However, treat only the accepting state as - consistent (because there is never a lookahead token that makes - sense there, and so no lookahead token should be read) if the user - has otherwise disabled default reductions. */ + `consistent'. However, do not treat a state with any reductions as + consistent unless it is the accepting state (because there is never + a lookahead token that makes sense there, and so no lookahead token + should be read) if the user has otherwise disabled default + reductions. */ if (rp->num > 1 || (rp->num == 1 && sp->num && TRANSITION_IS_SHIFT (sp, 0)) || (rp->num == 1 && rp->rules[0]->number != 0 @@ -372,7 +372,7 @@ initialize_LA (void) bool default_reduction_only_for_accept; { char *default_reductions = - muscle_percent_define_get ("lr.default_reductions"); + muscle_percent_define_get ("lr.default-reductions"); default_reduction_only_for_accept = 0 == strcmp (default_reductions, "accepting"); free (default_reductions);