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2cec9080f6
files include <stdio.h> before <config.h>, which messes up because the latter defines __EXTENSIONS__. Address the problem by creating two new little files that include <config.h> first, then include the flex-generated files. Rewrite everyone else to include <config.h> first, as well. * lib/timevar.c: Always include "config.h". * src/Makefile.am (bison_SOURCES): Replace scan-gram.l with scan-gram-c.c, and scan-skel.l with scan-skel-c.c. (EXTRA_bison_SOURCES): New macro. * src/scan-gram-c.c, src/scan-skel-c.c: New files. * src/system.h: Don't include config.h. * src/LR0.c: Include <config.h> first. * src/assoc.c: Likewise. * src/closure.c: Likewise. * src/complain.c: Likewise. * src/conflicts.c: Likewise. * src/derives.c: Likewise. * src/files.c: Likewise. * src/getargs.c: Likewise. * src/gram.c: Likewise. * src/lalr.c: Likewise. * src/location.c: Likewise. * src/main.c: Likewise. * src/muscle_tab.c: Likewise. * src/nullable.c: Likewise. * src/output.c: Likewise. * src/parse-gram.y: Likewise. * src/print.c: Likewise. * src/print_graph.c: Likewise. * src/reader.c: Likewise. * src/reduce.c: Likewise. * src/relation.c: Likewise. * src/state.c: Likewise. * src/symlist.c: Likewise. * src/symtab.c: Likewise. * src/tables.c: Likewise. * src/uniqstr.c: Likewise. * src/vcg.c: Likewise.
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/* Match rules with nonterminals for bison,
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Copyright (C) 1984, 1989, 2000, 2001, 2002, 2003, 2005 Free
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Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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Bison is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Bison is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bison; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include <config.h>
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#include "system.h"
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#include "getargs.h"
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#include "derives.h"
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#include "gram.h"
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#include "reader.h"
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#include "symtab.h"
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/* Linked list of rule numbers. */
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typedef struct rule_list
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{
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struct rule_list *next;
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rule *value;
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} rule_list;
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rule ***derives;
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static void
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print_derives (void)
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{
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int i;
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fputs ("DERIVES\n", stderr);
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for (i = ntokens; i < nsyms; i++)
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{
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rule **rp;
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fprintf (stderr, "\t%s derives\n", symbols[i]->tag);
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for (rp = derives[i - ntokens]; *rp; ++rp)
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{
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fprintf (stderr, "\t\t%3d ", (*rp)->user_number);
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rule_rhs_print (*rp, stderr);
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}
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}
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fputs ("\n\n", stderr);
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}
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void
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derives_compute (void)
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{
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symbol_number i;
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rule_number r;
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rule **q;
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/* DSET[NTERM - NTOKENS] -- A linked list of the numbers of the rules
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whose LHS is NTERM. */
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rule_list **dset = xcalloc (nvars, sizeof *dset);
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/* DELTS[RULE] -- There are NRULES rule number to attach to nterms.
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Instead of performing NRULES allocations for each, have an array
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indexed by rule numbers. */
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rule_list *delts = xnmalloc (nrules, sizeof *delts);
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for (r = nrules - 1; r >= 0; --r)
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{
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symbol_number lhs = rules[r].lhs->number;
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rule_list *p = &delts[r];
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/* A new LHS is found. */
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p->next = dset[lhs - ntokens];
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p->value = &rules[r];
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dset[lhs - ntokens] = p;
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}
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/* DSET contains what we need under the form of a linked list. Make
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it a single array. */
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derives = xnmalloc (nvars, sizeof *derives);
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q = xnmalloc (nvars + nrules, sizeof *q);
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for (i = ntokens; i < nsyms; i++)
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{
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rule_list *p = dset[i - ntokens];
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derives[i - ntokens] = q;
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while (p)
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{
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*q++ = p->value;
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p = p->next;
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}
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*q++ = NULL;
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}
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if (trace_flag & trace_sets)
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print_derives ();
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free (dset);
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free (delts);
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}
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void
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derives_free (void)
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{
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free (derives[0]);
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free (derives);
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}
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