X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/54bd0db43634c649d13e175384e6e816c44a34d4..10a9273b34548200a4e592093b8ba9bec4d980a8:/src/main.c diff --git a/src/main.c b/src/main.c index dc53fd81..58939d92 100644 --- a/src/main.c +++ b/src/main.c @@ -1,49 +1,75 @@ /* Top level entry point of bison, - Copyright (C) 1984, 1986, 1989 Free Software Foundation, Inc. + Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000 Free Software Foundation, Inc. -This file is part of Bison, the GNU Compiler Compiler. + This file is part of Bison, the GNU Compiler Compiler. -Bison 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. + Bison 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. -Bison 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. + Bison 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ + 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. */ #include #include "system.h" -#include "machine.h" /* JF for MAXSHORT */ +#include "machine.h" /* for MAXSHORT */ extern int lineno; extern int verboseflag; +extern char *infile; /* Nonzero means failure has been detected; don't write a parser file. */ int failure; -/* The name this program was run with, for messages. */ +/* The name this program was run with, for messages. */ char *program_name; -extern void getargs(), openfiles(), reader(), reduce_grammar(); -extern void set_derives(), set_nullable(), generate_states(); -extern void lalr(), initialize_conflicts(), verbose(), terse(); -extern void output(), done(); +char *printable_version PARAMS((int)); +char *int_to_string PARAMS((int)); +void fatal PARAMS((char *)); +void fatals PARAMS((char *, char *)); +void warn PARAMS((char *)); +void warni PARAMS((char *, int)); +void warns PARAMS((char *, char *)); +void warnss PARAMS((char *, char *, char *)); +void warnsss PARAMS((char *, char *, char *, char *)); +void toomany PARAMS((char *)); +void berror PARAMS((char *)); + +extern void getargs PARAMS((int, char *[])); +extern void openfiles PARAMS((void)); +extern void reader PARAMS((void)); +extern void reduce_grammar PARAMS((void)); +extern void set_derives PARAMS((void)); +extern void set_nullable PARAMS((void)); +extern void generate_states PARAMS((void)); +extern void lalr PARAMS((void)); +extern void initialize_conflicts PARAMS((void)); +extern void verbose PARAMS((void)); +extern void terse PARAMS((void)); +extern void output PARAMS((void)); +extern void done PARAMS((int)); /* VMS complained about using `int'. */ + int -main(argc, argv) -int argc; -char *argv[]; +main (int argc, char *argv[]) { program_name = argv[0]; + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); + failure = 0; lineno = 0; getargs(argc, argv); @@ -53,6 +79,8 @@ char *argv[]; In file reader.c. The other parts are recorded in the grammar; see gram.h. */ reader(); + if (failure) + done(failure); /* find useless nonterminals and productions and reduce the grammar. In file reduce.c */ @@ -71,8 +99,7 @@ char *argv[]; /* Find and record any conflicts: places where one token of lookahead is not enough to disambiguate the parsing. In file conflicts. - Currently this does not do anything to resolve them; - the trivial form of conflict resolution that exists is done in output. */ + Also resolve s/r conflicts based on precedence declarations. */ initialize_conflicts(); /* print information about results, if requested. In file print. */ @@ -84,57 +111,160 @@ char *argv[]; /* output the tables and the parser to ftable. In file output. */ output(); done(failure); + return failure; } - + /* functions to report errors which prevent a parser from being generated */ -void -fatal(s) -char *s; + +/* Return a string containing a printable version of C: + either C itself, or the corresponding \DDD code. */ + +char * +printable_version (int c) { - extern char *infile; + static char buf[10]; + if (c < ' ' || c >= '\177') + sprintf(buf, "\\%o", c); + else + { + buf[0] = c; + buf[1] = '\0'; + } + return buf; +} + +/* Generate a string from the integer I. + Return a ptr to internal memory containing the string. */ + +char * +int_to_string (int i) +{ + static char buf[20]; + sprintf(buf, "%d", i); + return buf; +} +/* Display filename and lino if available. */ + +static void +banner (void) +{ if (infile == 0) - fprintf(stderr, "fatal error: %s\n", s); + fprintf(stderr, "%s: ", program_name); else - fprintf(stderr, "\"%s\", line %d: %s\n", infile, lineno, s); - done(1); + fprintf(stderr, "%s:%d: ", infile, lineno); +} + +static void +fatal_banner (void) +{ + banner (); + fputs (_("fatal error: "), stderr); +} + +/* Print the message S for a fatal error. */ + +void +fatal (char *s) +{ + fatal_banner (); + fputs (s, stderr); + fputc ('\n', stderr); + done (1); +} + + +/* Print a message for a fatal error. Use FMT to construct the message + and incorporate string X1. */ + +void +fatals (char *fmt, char *x1) +{ + fatal_banner (); + fprintf (stderr, fmt, x1); + fputc ('\n', stderr); + done (1); +} + +static void +warn_banner (void) +{ + banner (); + failure = 1; +} + +/* Print a warning message S. */ + +void +warn (char *s) +{ + warn_banner (); + fputs (s, stderr); + fputc ('\n', stderr); } +/* Print a warning message containing the string for the integer X1. + The message is given by the format FMT. */ -/* JF changed to accept/deal with variable args. - DO NOT change this to use varargs. It will appear to work - but will break on systems that don't have the necessary library - functions. This is the ONLY safe way to write such a function. */ -/*VARARGS1*/ +void +warni (char *fmt, int x1) +{ + warn_banner (); + fprintf (stderr, fmt, x1); + fputc ('\n', stderr); +} + +/* Print a warning message containing the string X1. + The message is given by the format FMT. */ void -fatals(fmt,x1,x2,x3,x4,x5,x6,x7,x8) -char *fmt; +warns (char *fmt, char *x1) { - char buffer[200]; + warn_banner (); + fprintf (stderr, fmt, x1); + fputc ('\n', stderr); +} + +/* Print a warning message containing the two strings X1 and X2. + The message is given by the format FMT. */ - sprintf(buffer, fmt, x1,x2,x3,x4,x5,x6,x7,x8); - fatal(buffer); +void +warnss (char *fmt, char *x1, char *x2) +{ + warn_banner (); + fprintf (stderr, fmt, x1, x2); + fputc ('\n', stderr); } +/* Print a warning message containing the 3 strings X1, X2, X3. + The message is given by the format FMT. */ void -toomany(s) -char *s; +warnsss (char *fmt, char *x1, char *x2, char *x3) { - char buffer[200]; + warn_banner (); + fprintf (stderr, fmt, x1, x2, x3); + fputc ('\n', stderr); +} - /* JF new msg */ - sprintf(buffer, "limit of %d exceeded, too many %s", MAXSHORT, s); - fatal(buffer); +/* Print a message for the fatal occurence of more than MAXSHORT + instances of whatever is denoted by the string S. */ + +void +toomany (char *s) +{ + fatal_banner (); + fprintf (stderr, _("too many %s (max %d)"), s, MAXSHORT); + fputc ('\n', stderr); + done (1); } +/* Abort for an internal error denoted by string S. */ void -berror(s) -char *s; +berror (char *s) { - fprintf(stderr, "internal error, %s\n", s); + fprintf(stderr, _("%s: internal error: %s\n"), program_name, s); abort(); }