/* This is used for backward compatibility, e.g., "%define api.pure" supersedes "%pure-parser". */ void muscle_percent_define_ensure (char const *variable, location loc, bool value) { uniqstr name = muscle_name (variable, NULL); char const *val = value ? "" : "false"; /* Don't complain is VARIABLE is already defined, but be sure to set its value to VAL. */ if (!muscle_find_const (name) || muscle_percent_define_flag_if (variable) != value) muscle_percent_define_insert (variable, loc, muscle_keyword, val, MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE); }
int main (int argc, char *argv[]) { set_program_name (argv[0]); setlocale (LC_ALL, ""); bindtextdomain (PACKAGE, LOCALEDIR); bindtextdomain ("bison-runtime", LOCALEDIR); textdomain (PACKAGE); { char const *cp = getenv ("LC_CTYPE"); if (cp && STREQ (cp, "C")) set_custom_quoting ("e_quoting_options, "'", "'"); else set_quoting_style ("e_quoting_options, locale_quoting_style); } atexit (close_stdout); uniqstrs_new (); muscle_init (); complain_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 (); timevar_pop (TV_READER); if (complaint_status == status_complaint) 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. */ timevar_push (TV_SETS); derives_compute (); nullable_compute (); timevar_pop (TV_SETS); /* Compute LR(0) parser states. See state.h for more info. */ timevar_push (TV_LR0); generate_states (); timevar_pop (TV_LR0); /* 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. */ timevar_push (TV_CONFLICTS); conflicts_solve (); if (!muscle_percent_define_flag_if ("lr.keep-unreachable-state")) { 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")); print_precedence_warnings (); /* Output file names. */ compute_output_file_names (); /* Output the detailed report on the grammar. */ 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 (complaint_status == status_complaint) goto finish; /* 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 (); 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: /* Stop timing and print the times. */ timevar_stop (TV_TOTAL); timevar_print (stderr); cleanup_caret (); return complaint_status ? EXIT_FAILURE : EXIT_SUCCESS; }