X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7223426a2bcc3bd92f0c6bed56cce0d76028558f..76bf5102423b4d1597b214f77764075f55b5eb7b:/src/getargs.c?ds=sidebyside diff --git a/src/getargs.c b/src/getargs.c index b9a30698..d7e43850 100644 --- a/src/getargs.c +++ b/src/getargs.c @@ -1,48 +1,168 @@ -/* Parse command line arguments for bison. - Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002 - Free Software Foundation, Inc. +/* Parse command line arguments for Bison. + + Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, + 2005, 2006, 2007, 2008, 2009 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 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 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 3 of the License, 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. + 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 "getopt.h" -#include "argmatch.h" -#include "error.h" +#include "output.h" + +#include +#include +#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 "struniq.h" -#include "getargs.h" #include "files.h" +#include "getargs.h" +#include "muscle_tab.h" +#include "uniqstr.h" + +bool defines_flag; +bool graph_flag; +bool xml_flag; +bool no_lines_flag; +bool token_table_flag; +bool yacc_flag; /* for -y */ + +bool nondeterministic_parser = false; +bool glr_parser = false; -int debug_flag = 0; -int defines_flag = 0; -int locations_flag = 0; -int no_lines_flag = 0; -int no_parser_flag = 0; int report_flag = report_none; -int token_table_flag = 0; -int yacc_flag = 0; /* for -y */ -int graph_flag = 0; 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 } +}; +int skeleton_prio = default_prio; const char *skeleton = NULL; +int language_prio = default_prio; +struct bison_language const *language = &valid_languages[0]; const char *include = NULL; -extern char *program_name; +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 comma separated list of effective subarguments to decode. + * If 0, then activate all the flags. + * + * If VALUE != 0 then KEY sets flags and no-KEY clears them. + * If VALUE == 0 then KEY clears all flags and no-KEY sets all flags. + * Thus no-none = all and no-all = none. + */ +static void +flags_argmatch (const char *option, + const char * const keys[], const int values[], + int *flags, char *args) +{ + if (args) + { + args = strtok (args, ","); + while (args) + { + int no = strncmp (args, "no-", 3) == 0 ? 3 : 0; + int value = XARGMATCH (option, args + no, keys, values); + if (value == 0) + if (no) + *flags = ~0; + else + *flags = 0; + else + if (no) + *flags &= ~value; + 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); /*---------------------. @@ -53,15 +173,17 @@ 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 report", + "none - no traces", "scan - grammar scanner traces", "parse - grammar parser traces", - "automaton - contruction of the automaton", + "automaton - construction of the automaton", "bitsets - use of bitsets", - "grammar - reading, reducing of the grammar", + "grammar - reading, reducing the grammar", "resource - memory consumption (where available)", "sets - grammar sets: firsts, nullable etc.", - "tools - m4 invocation and preserve the temporary file", + "muscles - m4 definitions passed to the skeleton", + "tools - m4 invocation", + "m4 - m4 traces", "skeleton - skeleton postprocessing", "time - time consumption", "all - all of the above", @@ -78,80 +200,43 @@ static const int trace_types[] = trace_grammar, trace_resource, trace_sets, + trace_muscles, trace_tools, + trace_m4, trace_skeleton, trace_time, trace_all }; - -static void -trace_argmatch (char *args) -{ - verify (trace_constraint, ARGMATCH_CONSTRAINT (trace_args, trace_types)); - if (args) - { - args = strtok (args, ","); - do - { - int trace = XARGMATCH ("--trace", args, - trace_args, trace_types); - if (trace == trace_none) - trace_flag = trace_none; - else - trace_flag |= trace; - } - while ((args = strtok (NULL, ","))); - } - else - trace_flag = trace_all; -} +ARGMATCH_VERIFY (trace_args, trace_types); -/*----------------------. -| --report's handling. | -`----------------------*/ +/*------------------------. +| --warnings's handling. | +`------------------------*/ -static const char * const report_args[] = +static const char * const warnings_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", - "solved", - "all", + "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 report_types[] = +static const int warnings_types[] = { - report_none, - report_states, report_states, - report_states | report_itemsets, report_states | report_itemsets, - report_states | report_lookaheads, report_states | report_lookaheads, - report_states | report_solved_conflicts, - report_all + warnings_none, + warnings_midrule_values, + warnings_yacc, + warnings_all, + warnings_error }; - -static void -report_argmatch (char *args) -{ - verify (report_constraint, ARGMATCH_CONSTRAINT (report_args, report_types)); - args = strtok (args, ","); - do - { - int report = XARGMATCH ("--report", args, - report_args, report_types); - if (report == report_none) - report_flag = report_none; - else - report_flag |= report; - } - while ((args = strtok (NULL, ","))); -} +ARGMATCH_VERIFY (warnings_args, warnings_types); /*-------------------------------------------. @@ -168,65 +253,89 @@ usage (int status) program_name); else { - /* Some efforts were made to ease the translators' task, please - continue. */ - fputs (_("\ -GNU bison generates parsers for LALR(1) grammars.\n"), stdout); - putc ('\n', stdout); + /* For ../build-aux/cross-options.pl to work, use the format: + ^ -S, --long[=ARGS] (whitespace) + A --long option is required. + Otherwise, add exceptions to ../build-aux/cross-options.pl. */ - fprintf (stdout, _("\ -Usage: %s [OPTION]... FILE\n"), program_name); - putc ('\n', stdout); + printf (_("Usage: %s [OPTION]... FILE\n"), program_name); + fputs (_("\ +Generate LALR(1) and GLR parsers.\n\ +\n\ +"), stdout); fputs (_("\ -If a long option shows an argument as mandatory, then it is mandatory\n\ -for the equivalent short option also. Similarly for optional arguments.\n"), - stdout); - putc ('\n', stdout); +Mandatory arguments to long options are mandatory for short options too.\n\ +"), stdout); + fputs (_("\ +The same is true for optional arguments.\n\ +"), stdout); fputs (_("\ +\n\ Operation modes:\n\ - -h, --help display this help and exit\n\ - -V, --version output version information and exit\n\ - -y, --yacc emulate POSIX yacc\n"), stdout); - putc ('\n', stdout); + -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\ + --print-datadir output directory containing skeletons and XSLT\n\ + -y, --yacc emulate POSIX Yacc\n\ + -W, --warnings[=CATEGORY] report the warnings falling in CATEGORY\n\ +\n\ +"), stdout); fputs (_("\ Parser:\n\ + -L, --language=LANGUAGE specify the output programming language\n\ + (this is an experimental feature)\n\ -S, --skeleton=FILE specify the skeleton to use\n\ -t, --debug instrument the parser for debugging\n\ - --locations enable locations computation\n\ + --locations enable location support\n\ + -D, --define=NAME[=VALUE] same as `%define NAME \"VALUE\"'\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); - putc ('\n', stdout); + /* Keep -d and --defines separate so that ../build-aux/cross-options.pl + * won't assume that -d also takes an argument. */ fputs (_("\ Output:\n\ - -d, --defines also produce a header file\n\ + --defines[=FILE] also produce a header file\n\ + -d likewise but cannot specify FILE (for POSIX Yacc)\n\ -r, --report=THINGS also produce details on the automaton\n\ + --report-file=FILE write report to FILE\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 produce a VCG description of the automaton\n\ + -g, --graph[=FILE] also output a graph of the automaton\n\ + -x, --xml[=FILE] also output an XML report of the automaton\n\ + (the XML schema is experimental)\n\ +\n\ +"), stdout); + + fputs (_("\ +Warning categories include:\n\ + `midrule-values' unset or unused midrule values\n\ + `yacc' incompatibilities with POSIX YACC\n\ + `all' all the warnings\n\ + `no-CATEGORY' turn off warnings in CATEGORY\n\ + `none' turn off all the warnings\n\ + `error' treat warnings as errors\n\ +\n\ "), stdout); - putc ('\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 lookaheads to items\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); - putc ('\n', stdout); - fputs (_("\ -Report bugs to .\n"), stdout); + printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT); } exit (status); @@ -248,7 +357,8 @@ version (void) putc ('\n', stdout); fprintf (stdout, - _("Copyright (C) %d Free Software Foundation, Inc.\n"), 2002); + _("Copyright (C) %d Free Software Foundation, Inc.\n"), + PACKAGE_COPYRIGHT_YEAR); fputs (_("\ This is free software; see the source for copying conditions. There is NO\n\ @@ -258,18 +368,98 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ } +/*-------------------------------------. +| --skeleton and --language handling. | +`--------------------------------------*/ + +void +skeleton_arg (char const *arg, int prio, location loc) +{ + if (prio < skeleton_prio) + { + skeleton_prio = prio; + skeleton = arg; + } + else if (prio == skeleton_prio) + { + char const *msg = + _("multiple skeleton declarations are invalid"); + complain_at (loc, msg); + } +} + +void +language_argmatch (char const *arg, int prio, location loc) +{ + char const *msg; + + if (prio < language_prio) + { + int i; + for (i = 0; valid_languages[i].language[0]; i++) + if (c_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; + + complain_at (loc, msg, arg); +} + /*----------------------. | Process the options. | `----------------------*/ -/* Shorts options. */ -const char *short_options = "yvegdhr:ltknVo:b:p:S:T::"; +/* Shorts options. + Should be computed from long_options. */ +static char const short_options[] = + "D:" + "L:" + "S:" + "T::" + "V" + "W::" + "b:" + "d" + "e" + "g::" + "h" + "k" + "l" + "n" + "o:" + "p:" + "r:" + "t" + "v" + "x::" + "y" + ; + +/* Values for long options that do not have single-letter equivalents. */ +enum +{ + LOCATIONS_OPTION = CHAR_MAX + 1, + PRINT_LOCALEDIR_OPTION, + PRINT_DATADIR_OPTION, + REPORT_FILE_OPTION +}; static struct option const long_options[] = { /* Operation modes. */ - { "help", no_argument, 0, 'h' }, - { "version", no_argument, 0, 'V' }, + { "help", no_argument, 0, 'h' }, + { "version", no_argument, 0, 'V' }, + { "print-localedir", no_argument, 0, PRINT_LOCALEDIR_OPTION }, + { "print-datadir", no_argument, 0, PRINT_DATADIR_OPTION }, + { "warnings", optional_argument, 0, 'W' }, /* Parser. */ { "name-prefix", required_argument, 0, 'p' }, @@ -280,7 +470,9 @@ static struct option const long_options[] = { "output", required_argument, 0, 'o' }, { "output-file", required_argument, 0, 'o' }, { "graph", optional_argument, 0, 'g' }, + { "xml", optional_argument, 0, 'x' }, { "report", required_argument, 0, 'r' }, + { "report-file", required_argument, 0, REPORT_FILE_OPTION }, { "verbose", no_argument, 0, 'v' }, /* Hidden. */ @@ -295,11 +487,12 @@ static struct option const long_options[] = /* Parser. */ { "debug", no_argument, 0, 't' }, - { "locations", no_argument, &locations_flag, 1 }, + { "define", required_argument, 0, 'D' }, + { "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} @@ -313,88 +506,148 @@ static struct option const long_options[] = # define AS_FILE_NAME(File) (File) #endif +/* Build a location for the current command line argument. */ +static +location +command_line_location (void) +{ + location res; + /* "" is used in GCC's messages about -D. */ + boundary_set (&res.start, uniqstr_new (""), optind, -1); + res.end = res.start; + return res; +} + + void getargs (int argc, char *argv[]) { int c; - while ((c = getopt_long (argc, argv, short_options, long_options, NULL)) != EOF) + while ((c = getopt_long (argc, argv, short_options, long_options, NULL)) + != -1) switch (c) { + /* ASCII Sorting for short options (i.e., upper case then + lower case), and then long-only options. */ + case 0: /* Certain long options cause getopt_long to return 0. */ break; - case 'y': - yacc_flag = 1; + case 'D': /* -DNAME[=VALUE]. */ + { + char* name = optarg; + char* value = strchr (optarg, '='); + if (value) + *value++ = 0; + muscle_percent_define_insert (name, command_line_location (), + value ? value : ""); + } break; - case 'h': - usage (EXIT_SUCCESS); + case 'I': + include = AS_FILE_NAME (optarg); + break; - case 'V': - version (); - exit (EXIT_SUCCESS); + case 'L': + language_argmatch (optarg, command_line_prio, + command_line_location ()); + break; - case 'g': - /* Here, the -g and --graph=FILE options are differentiated. */ - graph_flag = 1; - spec_graph_file = AS_FILE_NAME (optarg); + case 'S': + skeleton_arg (AS_FILE_NAME (optarg), command_line_prio, + command_line_location ()); break; - case 'v': - report_flag |= report_states; + case 'T': + FLAGS_ARGMATCH (trace, optarg); break; - case 'S': - skeleton = AS_FILE_NAME (optarg); + case 'V': + version (); + exit (EXIT_SUCCESS); + + case 'W': + if (optarg) + FLAGS_ARGMATCH (warnings, optarg); + else + warnings_flag |= warnings_all; break; - case 'I': - include = AS_FILE_NAME (optarg); + case 'b': + spec_file_prefix = AS_FILE_NAME (optarg); break; case 'd': - /* Here, the -d and --defines options are differentiated. */ - defines_flag = 1; + /* Here, the -d and --defines options are differentiated. */ + defines_flag = true; + if (optarg) + spec_defines_file = xstrdup (AS_FILE_NAME (optarg)); + break; + + case 'g': + graph_flag = true; if (optarg) - spec_defines_file = AS_FILE_NAME (optarg); + spec_graph_file = xstrdup (AS_FILE_NAME (optarg)); + break; + + case 'h': + usage (EXIT_SUCCESS); + + case 'k': + token_table_flag = true; break; case 'l': - no_lines_flag = 1; + no_lines_flag = true; break; - case 'k': - token_table_flag = 1; + case 'o': + spec_outfile = AS_FILE_NAME (optarg); + break; + + case 'p': + spec_name_prefix = optarg; break; - case 'n': - no_parser_flag = 1; + case 'r': + FLAGS_ARGMATCH (report, optarg); break; case 't': - debug_flag = 1; + muscle_percent_define_insert ("debug", command_line_location (), ""); break; - case 'o': - spec_outfile = AS_FILE_NAME (optarg); + case 'v': + report_flag |= report_states; break; - case 'b': - spec_file_prefix = AS_FILE_NAME (optarg); + case 'x': + xml_flag = true; + if (optarg) + spec_xml_file = xstrdup (AS_FILE_NAME (optarg)); break; - case 'p': - spec_name_prefix = optarg; + case 'y': + yacc_flag = true; break; - case 'r': - report_argmatch (optarg); + case LOCATIONS_OPTION: + muscle_percent_define_ensure ("locations", + command_line_location (), true); break; - case 'T': - trace_argmatch (optarg); + case PRINT_LOCALEDIR_OPTION: + printf ("%s\n", LOCALEDIR); + exit (EXIT_SUCCESS); + + case PRINT_DATADIR_OPTION: + printf ("%s\n", compute_pkgdatadir ()); + exit (EXIT_SUCCESS); + + case REPORT_FILE_OPTION: + spec_verbose_file = xstrdup (AS_FILE_NAME (optarg)); break; default: @@ -410,5 +663,6 @@ getargs (int argc, char *argv[]) usage (EXIT_FAILURE); } - current_file = grammar_file = struniq_new (argv[optind]); + current_file = grammar_file = uniqstr_new (argv[optind]); + MUSCLE_INSERT_C_STRING ("file_name", grammar_file); }