X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/914feea9d07b0a53ee958e8df755addb97196913..0e16927b48c881317a38132923b6f3150802a7d3:/src/main.c?ds=sidebyside diff --git a/src/main.c b/src/main.c index 5d70fa48..0396b0f1 100644 --- a/src/main.c +++ b/src/main.c @@ -1,121 +1,220 @@ -/* Top level entry point of bison, - Copyright 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002 - Free Software Foundation, Inc. +/* Top level entry point of Bison. + + Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000-2002, 2004-2012 Free + Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. - Bison is free software; you can redistribute it and/or modify + This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. - Bison is distributed in the hope that it will be useful, + This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with Bison; see the file COPYING. If not, write to - the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - + along with this program. If not, see . */ +#include #include "system.h" -#include "bitset.h" -#include "getargs.h" -#include "files.h" + +#include +#include +#include +#include +#include +#include + +#include "LR0.h" +#include "closeout.h" #include "complain.h" +#include "conflicts.h" #include "derives.h" -#include "output.h" -#include "reader.h" +#include "files.h" +#include "getargs.h" +#include "gram.h" #include "lalr.h" -#include "reduce.h" +#include "ielr.h" +#include "muscle-tab.h" #include "nullable.h" +#include "output.h" #include "print.h" -#include "LR0.h" -#include "conflicts.h" #include "print_graph.h" -#include "muscle_tab.h" +#include "print-xml.h" +#include +#include "reader.h" +#include "reduce.h" +#include "scan-code.h" +#include "scan-gram.h" +#include "scan-skel.h" #include "symtab.h" -#include "lex.h" +#include "tables.h" +#include "uniqstr.h" -/* The name this program was run with, for messages. */ -char *program_name; int main (int argc, char *argv[]) { - program_name = argv[0]; + set_program_name (argv[0]); setlocale (LC_ALL, ""); - bindtextdomain (PACKAGE, LOCALEDIR); - textdomain (PACKAGE); + (void) bindtextdomain (PACKAGE, LOCALEDIR); + (void) bindtextdomain ("bison-runtime", LOCALEDIR); + (void) textdomain (PACKAGE); - bitset_stats_init (); + { + char const *cp = getenv ("LC_CTYPE"); + if (cp && !strcmp (cp, "C")) + set_custom_quoting ("e_quoting_options, "'", "'"); + else + set_quoting_style ("e_quoting_options, locale_quoting_style); + } - lineno = 0; - getargs (argc, argv); + atexit (close_stdout); + uniqstrs_new (); muscle_init (); + getargs (argc, argv); + + timevar_report = trace_flag & trace_time; + init_timevar (); + timevar_start (TV_TOTAL); + + if (trace_flag & trace_bitsets) + bitset_stats_enable (); + /* Read the input. Copy some parts of it to FGUARD, FACTION, FTABLE and FATTRS. In file reader.c. The other parts are recorded in the grammar; see gram.h. */ + + timevar_push (TV_READER); reader (); - if (complain_message_count) - exit (1); + timevar_pop (TV_READER); + + if (complaint_issued) + goto finish; /* Find useless nonterminals and productions and reduce the grammar. */ + timevar_push (TV_REDUCE); reduce_grammar (); + timevar_pop (TV_REDUCE); /* Record other info about the grammar. In files derives and nullable. */ - set_derives (); - set_nullable (); + timevar_push (TV_SETS); + derives_compute (); + nullable_compute (); + timevar_pop (TV_SETS); - /* Convert to nondeterministic finite state machine. In file LR0. - See state.h for more info. */ + /* Compute LR(0) parser states. See state.h for more info. */ + timevar_push (TV_LR0); generate_states (); + timevar_pop (TV_LR0); - /* make it deterministic. In file lalr. */ - lalr (); + /* Add lookahead sets to parser states. Except when LALR(1) is + requested, split states to eliminate LR(1)-relative + inadequacies. */ + ielr (); /* Find and record any conflicts: places where one token of lookahead is not enough to disambiguate the parsing. In file conflicts. Also resolve s/r conflicts based on precedence declarations. */ - solve_conflicts (); + timevar_push (TV_CONFLICTS); + conflicts_solve (); + if (!muscle_percent_define_flag_if ("lr.keep-unreachable-states")) + { + state_number *old_to_new = xnmalloc (nstates, sizeof *old_to_new); + state_number nstates_old = nstates; + state_remove_unreachable_states (old_to_new); + lalr_update_state_numbers (old_to_new, nstates_old); + conflicts_update_state_numbers (old_to_new, nstates_old); + free (old_to_new); + } conflicts_print (); + timevar_pop (TV_CONFLICTS); + + /* Compute the parser tables. */ + timevar_push (TV_ACTIONS); + tables_generate (); + timevar_pop (TV_ACTIONS); + + grammar_rules_useless_report + (_("rule useless in parser due to conflicts")); /* Output file names. */ compute_output_file_names (); /* Output the detailed report on the grammar. */ - if (verbose_flag) - print_results (); + if (report_flag) + { + timevar_push (TV_REPORT); + print_results (); + timevar_pop (TV_REPORT); + } + + /* Output the graph. */ + if (graph_flag) + { + timevar_push (TV_GRAPH); + print_graph (); + timevar_pop (TV_GRAPH); + } + + /* Output xml. */ + if (xml_flag) + { + timevar_push (TV_XML); + print_xml (); + timevar_pop (TV_XML); + } /* Stop if there were errors, to avoid trashing previous output files. */ - if (complain_message_count) - exit (1); + if (complaint_issued) + goto finish; - /* Output the VCG graph. */ - if (graph_flag) - print_graph (); + /* Lookahead tokens are no longer needed. */ + timevar_push (TV_FREE); + lalr_free (); + timevar_pop (TV_FREE); /* Output the tables and the parser to ftable. In file output. */ + timevar_push (TV_PARSER); output (); + timevar_pop (TV_PARSER); + timevar_push (TV_FREE); + nullable_free (); + derives_free (); + tables_free (); + states_free (); reduce_free (); - free_conflicts (); - free_nullable (); - free_derives (); + conflicts_free (); grammar_free (); + output_file_names_free (); + + /* The scanner memory cannot be released right after parsing, as it + contains things such as user actions, prologue, epilogue etc. */ + gram_scanner_free (); + muscle_free (); + uniqstrs_free (); + code_scanner_free (); + skel_scanner_free (); + quotearg_free (); + timevar_pop (TV_FREE); + + if (trace_flag & trace_bitsets) + bitset_stats_dump (stderr); + + finish: - /* If using alloca.c, flush the alloca'ed memory for the benefit of - people running Bison as a library in IDEs. */ -#if C_ALLOCA - alloca (0); -#endif + /* Stop timing and print the times. */ + timevar_stop (TV_TOTAL); + timevar_print (stderr); - return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS; + return complaint_issued ? EXIT_FAILURE : EXIT_SUCCESS; }