X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/6f43b11362bfc441d868f163146d4c19a87e47c0..e9f87b5b7df2e328d2e4196d276c0d96594c906b:/src/main.c diff --git a/src/main.c b/src/main.c index 6a89f5c8..55dca624 100644 --- a/src/main.c +++ b/src/main.c @@ -1,5 +1,5 @@ /* Top level entry point of bison, - Copyright 1984, 1986, 1989, 1992, 1995, 2000 + Copyright 1984, 1986, 1989, 1992, 1995, 2000, 2001 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -34,12 +34,13 @@ #include "LR0.h" #include "conflicts.h" #include "print_graph.h" +#include "muscle_tab.h" +#include "symtab.h" +#include "lex.h" /* The name this program was run with, for messages. */ char *program_name; -extern void berror PARAMS((const char *)); - int main (int argc, char *argv[]) { @@ -51,8 +52,7 @@ main (int argc, char *argv[]) lineno = 0; getargs (argc, argv); - macro_init (); - open_files (); + muscle_init (); /* Read the input. Copy some parts of it to FGUARD, FACTION, FTABLE and FATTRS. In file reader.c. The other parts are recorded in @@ -61,15 +61,15 @@ main (int argc, char *argv[]) if (complain_message_count) exit (1); - /* find useless nonterminals and productions and reduce the grammar. In - file reduce.c */ + /* Find useless nonterminals and productions and reduce the grammar. */ reduce_grammar (); - /* record other info about the grammar. In files derives and nullable. */ + /* Record other info about the grammar. In files derives and + nullable. */ set_derives (); set_nullable (); - /* convert to nondeterministic finite state machine. In file LR0. + /* Convert to nondeterministic finite state machine. In file LR0. See state.h for more info. */ generate_states (); @@ -80,32 +80,41 @@ main (int argc, char *argv[]) lookahead is not enough to disambiguate the parsing. In file conflicts. Also resolve s/r conflicts based on precedence declarations. */ - initialize_conflicts (); + solve_conflicts (); + conflicts_print (); + + /* Output file names. */ + compute_output_file_names (); + + /* Output the detailed report on the grammar. */ + if (verbose_flag) + print_results (); - /* Print information about results, if requested. */ - print_results (); + /* Stop if there were errors, to avoid trashing previous output + files. */ + if (complain_message_count) + exit (1); - /* Output the VCG graph. */ - print_graph (); + /* Output the VCG graph. */ + if (graph_flag) + print_graph (); /* Output the tables and the parser to ftable. In file output. */ output (); - finalize_conflicts (); + /* Free the symbol table data structure. */ + free_symtab (); + + reduce_free (); + free_conflicts (); free_nullable (); free_derives (); - if (!complain_message_count) - output_files (); - - exit (complain_message_count ? 1 : 0); -} - -/* Abort for an internal error denoted by string S. */ + /* 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 -void -berror (const char *s) -{ - fprintf (stderr, _("%s: internal error: %s\n"), program_name, s); - abort (); + return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS; }