X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3d8fc6caa543469fedaa7d153134ebc47ec04ddf..b2b81dae234cc710e65542d3535fe963d0d1d314:/src/getargs.c?ds=inline diff --git a/src/getargs.c b/src/getargs.c index d853118e..0938c698 100644 --- a/src/getargs.c +++ b/src/getargs.c @@ -1,135 +1,572 @@ -/* Parse command line arguments for bison, - Copyright (C) 1984, 1986, 1989 Free Software Foundation, Inc. +/* Parse command line arguments for Bison. -This file is part of Bison, the GNU Compiler Compiler. + Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, + 2005, 2006, 2007 Free Software Foundation, Inc. -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. + This file is part of Bison, the GNU Compiler Compiler. -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 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. -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. */ + 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301, USA. */ -#include -#include "getopt.h" +#include #include "system.h" +#include "revision.h" + +#include +#include +#include + +/* Hack to get to declare getopt with a prototype. */ +#if lint && ! defined __GNU_LIBRARY__ +# define __GNU_LIBRARY__ +# define HACK_FOR___GNU_LIBRARY___PROTOTYPE 1 +#endif + +#include + +#ifdef HACK_FOR___GNU_LIBRARY___PROTOTYPE +# undef __GNU_LIBRARY__ +# undef HACK_FOR___GNU_LIBRARY___PROTOTYPE +#endif + +#include "complain.h" #include "files.h" +#include "getargs.h" +#include "uniqstr.h" -int verboseflag; -int definesflag; -int debugflag; -int nolinesflag; -char *spec_name_prefix; /* for -p. */ -char *spec_file_prefix; /* for -b. */ -extern int fixed_outfiles;/* for -y */ +bool debug_flag; +bool defines_flag; +bool graph_flag; +bool locations_flag; +bool no_lines_flag; +bool no_parser_flag; +bool token_table_flag; +bool yacc_flag; /* for -y */ -extern void fatal(); +bool error_verbose = false; -struct option longopts[] = -{ - {"debug", 0, &debugflag, 1}, - {"defines", 0, &definesflag, 1}, - {"file-prefix", 1, 0, 'b'}, - {"fixed-output-files", 0, &fixed_outfiles, 1}, - {"name-prefix", 1, 0, 'a'}, - {"no-lines", 0, &nolinesflag, 1}, - {"output", 1, 0, 'o'}, - {"output-file", 1, 0, 'o'}, - {"verbose", 0, &verboseflag, 1}, - {"version", 0, 0, 'V'}, - {"yacc", 0, &fixed_outfiles, 1}, - {0, 0, 0, 0} +bool nondeterministic_parser = false; +bool glr_parser = false; +bool pull_parser = true; +bool pure_parser = false; +bool push_parser = false; + +int report_flag = report_none; +int trace_flag = trace_none; +int warnings_flag = warnings_none; + +static struct bison_language const valid_languages[] = { + { "c", "c-skel.m4", ".c", ".h", true }, + { "c++", "c++-skel.m4", ".cc", ".hh", true }, + { "java", "java-skel.m4", ".java", ".java", false }, + { "", "", "", "", false } }; -void -getargs(argc, argv) - int argc; - char *argv[]; +static int skeleton_prio = 2; +const char *skeleton = NULL; +static int language_prio = 2; +struct bison_language const *language = &valid_languages[0]; +const char *include = NULL; + +char *program_name; + + +/** Decode an option's set of keys. + * + * \param option option being decoded. + * \param keys array of valid subarguments. + * \param values array of corresponding (int) values. + * \param flags the flags to update + * \param args colon separated list of effective subarguments to decode. + * If 0, then activate all the flags. + * + * The special value 0 resets the flags to 0. + */ +static void +flags_argmatch (const char *option, + const char * const keys[], const int values[], + int *flags, char *args) { - register int c; - int longind; - extern char *program_name; - extern char *version_string; - - verboseflag = 0; - definesflag = 0; - debugflag = 0; - fixed_outfiles = 0; - - while ((c = getopt_long (argc, argv, "yvdltVo:b:p:", longopts, &longind)) - != EOF) + if (args) { - if (c == 0 && longopts[longind].flag == 0) - c = longopts[longind].val; - switch (c) + args = strtok (args, ","); + while (args) { - case 0: - /* Certain long options cause getopt_long to return 0. */ - break; - - case 'y': - fixed_outfiles = 1; - break; - - case 'V': - printf("%s", version_string); - break; - - case 'v': - verboseflag = 1; - break; - - case 'd': - definesflag = 1; - break; - - case 'l': - nolinesflag = 1; - break; - - case 't': - debugflag = 1; - break; - - case 'o': - spec_outfile = optarg; - break; - - case 'b': - spec_file_prefix = optarg; - break; - - case 'p': - spec_name_prefix = optarg; - break; - - default: - fprintf (stderr, "\ -Usage: %s [-dltvyV] [-b file-prefix] [-o outfile] [-p name-prefix]\n\ - [--debug] [--defines] [--fixed-output-files] [--no-lines]\n\ - [--verbose] [--version] [--yacc]\n\ - [--file-prefix=prefix] [--name-prefix=prefix]\n\ - [--output=outfile] grammar-file\n", - program_name); - exit (1); + int value = XARGMATCH (option, args, keys, values); + if (value == 0) + *flags = 0; + else + *flags |= value; + args = strtok (NULL, ","); } } + else + *flags = ~0; +} + +/** Decode a set of sub arguments. + * + * \param FlagName the flag familly to update. + * \param Args the effective sub arguments to decode. + * + * \arg FlagName_args the list of keys. + * \arg FlagName_types the list of values. + * \arg FlagName_flag the flag to update. + */ +#define FLAGS_ARGMATCH(FlagName, Args) \ + flags_argmatch ("--" #FlagName, FlagName ## _args, FlagName ## _types, \ + &FlagName ## _flag, Args) + + +/*----------------------. +| --report's handling. | +`----------------------*/ + +static const char * const report_args[] = +{ + /* In a series of synonyms, present the most meaningful first, so + that argmatch_valid be more readable. */ + "none", + "state", "states", + "itemset", "itemsets", + "lookahead", "lookaheads", "look-ahead", + "solved", + "all", + 0 +}; + +static const int report_types[] = +{ + report_none, + report_states, report_states, + report_states | report_itemsets, report_states | report_itemsets, + report_states | report_lookahead_tokens, + report_states | report_lookahead_tokens, + report_states | report_lookahead_tokens, + report_states | report_solved_conflicts, + report_all +}; + +ARGMATCH_VERIFY (report_args, report_types); + + +/*---------------------. +| --trace's handling. | +`---------------------*/ + +static const char * const trace_args[] = +{ + /* In a series of synonyms, present the most meaningful first, so + that argmatch_valid be more readable. */ + "none - no traces", + "scan - grammar scanner traces", + "parse - grammar parser traces", + "automaton - construction of the automaton", + "bitsets - use of bitsets", + "grammar - reading, reducing the grammar", + "resource - memory consumption (where available)", + "sets - grammar sets: firsts, nullable etc.", + "tools - m4 invocation", + "m4 - m4 traces", + "skeleton - skeleton postprocessing", + "time - time consumption", + "all - all of the above", + 0 +}; + +static const int trace_types[] = +{ + trace_none, + trace_scan, + trace_parse, + trace_automaton, + trace_bitsets, + trace_grammar, + trace_resource, + trace_sets, + trace_tools, + trace_m4, + trace_skeleton, + trace_time, + trace_all +}; + +ARGMATCH_VERIFY (trace_args, trace_types); + + +/*------------------------. +| --warnings's handling. | +`------------------------*/ + +static const char * const warnings_args[] = +{ + /* In a series of synonyms, present the most meaningful first, so + that argmatch_valid be more readable. */ + "none - no warnings", + "midrule-values - unset or unused midrule values", + "yacc - incompatibilities with POSIX YACC", + "all - all of the above", + "error - warnings are errors", + 0 +}; + +static const int warnings_types[] = +{ + warnings_none, + warnings_midrule_values, + warnings_yacc, + warnings_all, + warnings_error +}; + +ARGMATCH_VERIFY (warnings_args, warnings_types); + + +/*-------------------------------------------. +| Display the help message and exit STATUS. | +`-------------------------------------------*/ + +static void usage (int) ATTRIBUTE_NORETURN; + +static void +usage (int status) +{ + if (status != 0) + fprintf (stderr, _("Try `%s --help' for more information.\n"), + program_name); + else + { + printf (_("Usage: %s [OPTION]... FILE\n"), program_name); + fputs (_("\ +Generate LALR(1) and GLR parsers.\n\ +\n\ +"), stdout); + + fputs (_("\ +Mandatory arguments to long options are mandatory for short options too.\n\ +"), stdout); + + fputs (_("\ +\n\ +Operation modes:\n\ + -h, --help display this help and exit\n\ + -V, --version output version information and exit\n\ + --print-localedir output directory containing locale-dependent data\n\ + -y, --yacc emulate POSIX Yacc\n\ +\n\ +"), stdout); + + fputs (_("\ +Parser:\n\ + -S, --skeleton=FILE specify the skeleton to use\n\ + -t, --debug instrument the parser for debugging\n\ + --locations enable locations computation\n\ + -p, --name-prefix=PREFIX prepend PREFIX to the external symbols\n\ + -l, --no-lines don't generate `#line' directives\n\ + -n, --no-parser generate the tables only\n\ + -k, --token-table include a table of token names\n\ +\n\ +"), stdout); + + fputs (_("\ +Output:\n\ + -d, --defines also produce a header file\n\ + -r, --report=THINGS also produce details on the automaton\n\ + -v, --verbose same as `--report=state'\n\ + -b, --file-prefix=PREFIX specify a PREFIX for output files\n\ + -o, --output=FILE leave output to FILE\n\ + -g, --graph also output a graph of the automaton\n\ +\n\ +"), stdout); + + fputs (_("\ +THINGS is a list of comma separated words that can include:\n\ + `state' describe the states\n\ + `itemset' complete the core item sets with their closure\n\ + `lookahead' explicitly associate lookahead tokens to items\n\ + `solved' describe shift/reduce conflicts solving\n\ + `all' include all the above information\n\ + `none' disable the report\n\ +"), stdout); + + printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT); + } + + exit (status); +} + + +/*------------------------------. +| Display the version message. | +`------------------------------*/ + +static void +version (void) +{ + /* Some efforts were made to ease the translators' task, please + continue. */ + printf (_("bison (GNU Bison) %s"), VERSION); + putc ('\n', stdout); + printf ("%s", revision); + fputs (_("Written by Robert Corbett and Richard Stallman.\n"), stdout); + putc ('\n', stdout); + + fprintf (stdout, + _("Copyright (C) %d Free Software Foundation, Inc.\n"), 2006); + + fputs (_("\ +This is free software; see the source for copying conditions. There is NO\n\ +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ +"), + stdout); +} + + +/*-------------------------------------. +| --skeleton and --language handling. | +`--------------------------------------*/ + +void +skeleton_arg (char const *arg, int prio, location const *loc) +{ + if (prio < skeleton_prio) + { + skeleton_prio = prio; + skeleton = arg; + } + else if (prio == skeleton_prio) + { + char const *msg = + _("multiple skeleton declarations are invalid"); + if (loc) + complain_at (*loc, msg); + else + complain (msg); + } +} + +void +language_argmatch (char const *arg, int prio, location const *loc) +{ + char const *msg; + + if (prio < language_prio) + { + int i; + for (i = 0; valid_languages[i].language[0]; i++) + if (strcasecmp (arg, valid_languages[i].language) == 0) + { + language_prio = prio; + language = &valid_languages[i]; + return; + } + msg = _("invalid language `%s'"); + } + else if (language_prio == prio) + msg = _("multiple language declarations are invalid"); + else + return; + + if (loc) + complain_at (*loc, msg, arg); + else + complain (msg, arg); +} + +/*----------------------. +| Process the options. | +`----------------------*/ + +/* Shorts options. */ +static char const short_options[] = "yvegdhr:L:ltknVo:b:p:S:T::W"; + +/* Values for long options that do not have single-letter equivalents. */ +enum +{ + LOCATIONS_OPTION = CHAR_MAX + 1, + PRINT_LOCALEDIR_OPTION +}; + +static struct option const long_options[] = +{ + /* Operation modes. */ + { "help", no_argument, 0, 'h' }, + { "version", no_argument, 0, 'V' }, + { "print-localedir", no_argument, 0, PRINT_LOCALEDIR_OPTION }, + { "warnings", optional_argument, 0, 'W' }, + + /* Parser. */ + { "name-prefix", required_argument, 0, 'p' }, + { "include", required_argument, 0, 'I' }, + + /* Output. */ + { "file-prefix", required_argument, 0, 'b' }, + { "output", required_argument, 0, 'o' }, + { "output-file", required_argument, 0, 'o' }, + { "graph", optional_argument, 0, 'g' }, + { "report", required_argument, 0, 'r' }, + { "verbose", no_argument, 0, 'v' }, + + /* Hidden. */ + { "trace", optional_argument, 0, 'T' }, + + /* Output. */ + { "defines", optional_argument, 0, 'd' }, + + /* Operation modes. */ + { "fixed-output-files", no_argument, 0, 'y' }, + { "yacc", no_argument, 0, 'y' }, + + /* Parser. */ + { "debug", no_argument, 0, 't' }, + { "locations", no_argument, 0, LOCATIONS_OPTION }, + { "no-lines", no_argument, 0, 'l' }, + { "no-parser", no_argument, 0, 'n' }, + { "raw", no_argument, 0, 0 }, + { "skeleton", required_argument, 0, 'S' }, + { "language", required_argument, 0, 'L' }, + { "token-table", no_argument, 0, 'k' }, + + {0, 0, 0, 0} +}; + +/* Under DOS, there is no difference on the case. This can be + troublesome when looking for `.tab' etc. */ +#ifdef MSDOS +# define AS_FILE_NAME(File) (strlwr (File), (File)) +#else +# define AS_FILE_NAME(File) (File) +#endif + +void +getargs (int argc, char *argv[]) +{ + int c; + + while ((c = getopt_long (argc, argv, short_options, long_options, NULL)) + != -1) + switch (c) + { + case 0: + /* Certain long options cause getopt_long to return 0. */ + break; + + case 'b': + spec_file_prefix = AS_FILE_NAME (optarg); + break; + + case 'g': + /* Here, the -g and --graph=FILE options are differentiated. */ + graph_flag = true; + if (optarg) + spec_graph_file = xstrdup (AS_FILE_NAME (optarg)); + break; + + case 'h': + usage (EXIT_SUCCESS); + + case 'L': + language_argmatch (optarg, 0, NULL); + break; + + case 'S': + skeleton_arg (AS_FILE_NAME (optarg), 0, NULL); + break; + + case 'I': + include = AS_FILE_NAME (optarg); + break; + + case 'd': + /* Here, the -d and --defines options are differentiated. */ + defines_flag = true; + if (optarg) + spec_defines_file = xstrdup (AS_FILE_NAME (optarg)); + break; + + case 'k': + token_table_flag = true; + break; + + case 'l': + no_lines_flag = true; + break; + + case 'n': + no_parser_flag = true; + break; + + case 'o': + spec_outfile = AS_FILE_NAME (optarg); + break; + + case 'p': + spec_name_prefix = optarg; + break; + + case 'r': + FLAGS_ARGMATCH (report, optarg); + break; + + case 'T': + FLAGS_ARGMATCH (trace, optarg); + break; + + case 't': + debug_flag = true; + break; + + case 'V': + version (); + exit (EXIT_SUCCESS); + + case 'v': + report_flag |= report_states; + break; + + case 'y': + yacc_flag = true; + break; + + case 'W': + if (optarg) + FLAGS_ARGMATCH (warnings, optarg); + else + warnings_flag |= warnings_all; + break; + + case LOCATIONS_OPTION: + locations_flag = true; + break; + + case PRINT_LOCALEDIR_OPTION: + printf ("%s\n", LOCALEDIR); + exit (EXIT_SUCCESS); + + default: + usage (EXIT_FAILURE); + } - if (optind == argc) + if (argc - optind != 1) { - fprintf(stderr, "%s: no grammar file given\n", program_name); - exit(1); + if (argc - optind < 1) + error (0, 0, _("missing operand after `%s'"), argv[argc - 1]); + else + error (0, 0, _("extra operand `%s'"), argv[optind + 1]); + usage (EXIT_FAILURE); } - if (optind < argc - 1) - fprintf(stderr, "%s: warning: extra arguments ignored\n", program_name); - infile = argv[optind]; + current_file = grammar_file = uniqstr_new (argv[optind]); }