X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/2a26b6c28bf3d924e2e66ee1ab66768579c1e5d7..eb1b07409f0ccad9970c8a60ded9f2a56d205b9c:/src/getargs.c?ds=sidebyside diff --git a/src/getargs.c b/src/getargs.c index ec7ddf17..4ff38fb1 100644 --- a/src/getargs.c +++ b/src/getargs.c @@ -1,7 +1,7 @@ /* Parse command line arguments for Bison. Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, - 2005, 2006 Free Software Foundation, Inc. + 2005, 2006, 2007 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -22,8 +22,11 @@ #include #include "system.h" +#include "revision.h" #include +#include +#include #include /* Hack to get to declare getopt with a prototype. */ @@ -57,15 +60,107 @@ bool error_verbose = false; 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 } +}; + +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; -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 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) +{ + if (args) + { + args = strtok (args, ","); + while (args) + { + 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); /*---------------------. @@ -76,12 +171,12 @@ 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", @@ -111,74 +206,33 @@ static const int trace_types[] = ARGMATCH_VERIFY (trace_args, trace_types); -static void -trace_argmatch (char *args) -{ - 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; -} - -/*----------------------. -| --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", - "look-ahead", "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_look_ahead_tokens, - report_states | report_look_ahead_tokens, - report_states | report_look_ahead_tokens, - report_states | report_solved_conflicts, - report_all + warnings_none, + warnings_midrule_values, + warnings_yacc, + warnings_all, + warnings_error }; -ARGMATCH_VERIFY (report_args, report_types); - -static void -report_argmatch (char *args) -{ - 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); /*-------------------------------------------. @@ -195,29 +249,25 @@ usage (int status) program_name); else { - /* Some efforts were made to ease the translators' task, please - continue. */ + printf (_("Usage: %s [OPTION]... FILE\n"), program_name); fputs (_("\ -GNU bison generates parsers for LALR(1) or GLR grammars.\n"), stdout); - putc ('\n', stdout); - - fprintf (stdout, _("\ -Usage: %s [OPTION]... FILE\n"), program_name); - putc ('\n', stdout); +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 (_("\ +\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"), stdout); - putc ('\n', stdout); + -y, --yacc emulate POSIX Yacc\n\ +\n\ +"), stdout); fputs (_("\ Parser:\n\ @@ -228,8 +278,8 @@ Parser:\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); fputs (_("\ Output:\n\ @@ -238,23 +288,21 @@ Output:\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 also output a graph of the automaton\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\ - `look-ahead' explicitly associate look-ahead tokens 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); @@ -272,6 +320,7 @@ version (void) 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); @@ -286,12 +335,63 @@ 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 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 (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; + + if (loc) + complain_at (*loc, msg, arg); + else + complain (msg, arg); +} + /*----------------------. | Process the options. | `----------------------*/ /* Shorts options. */ -static char const short_options[] = "yvegdhr:ltknVo:b:p:S:T::"; +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 @@ -303,9 +403,10 @@ enum 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 }, + { "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' }, @@ -336,6 +437,7 @@ static struct option const long_options[] = { "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} @@ -362,34 +464,26 @@ getargs (int argc, char *argv[]) /* Certain long options cause getopt_long to return 0. */ break; - case 'y': - yacc_flag = true; + case 'b': + spec_file_prefix = AS_FILE_NAME (optarg); break; - case 'h': - usage (EXIT_SUCCESS); - - case 'V': - version (); - exit (EXIT_SUCCESS); - - case PRINT_LOCALEDIR_OPTION: - printf ("%s\n", LOCALEDIR); - exit (EXIT_SUCCESS); - case 'g': /* Here, the -g and --graph=FILE options are differentiated. */ graph_flag = true; if (optarg) - spec_graph_file = AS_FILE_NAME (optarg); + spec_graph_file = xstrdup (AS_FILE_NAME (optarg)); break; - case 'v': - report_flag |= report_states; + case 'h': + usage (EXIT_SUCCESS); + + case 'L': + language_argmatch (optarg, 0, NULL); break; case 'S': - skeleton = AS_FILE_NAME (optarg); + skeleton_arg (AS_FILE_NAME (optarg), 0, NULL); break; case 'I': @@ -400,49 +494,68 @@ getargs (int argc, char *argv[]) /* Here, the -d and --defines options are differentiated. */ defines_flag = true; if (optarg) - spec_defines_file = AS_FILE_NAME (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 LOCATIONS_OPTION: - locations_flag = true; + case 'n': + no_parser_flag = true; break; - case 'k': - token_table_flag = true; + case 'o': + spec_outfile = AS_FILE_NAME (optarg); break; - case 'n': - no_parser_flag = true; + 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 'o': - spec_outfile = AS_FILE_NAME (optarg); - break; + case 'V': + version (); + exit (EXIT_SUCCESS); - case 'b': - spec_file_prefix = AS_FILE_NAME (optarg); + case 'v': + report_flag |= report_states; break; - case 'p': - spec_name_prefix = optarg; + case 'y': + yacc_flag = true; break; - case 'r': - report_argmatch (optarg); + case 'W': + if (optarg) + FLAGS_ARGMATCH (warnings, optarg); + else + warnings_flag |= warnings_all; break; - case 'T': - trace_argmatch (optarg); + case LOCATIONS_OPTION: + locations_flag = true; break; + case PRINT_LOCALEDIR_OPTION: + printf ("%s\n", LOCALEDIR); + exit (EXIT_SUCCESS); + default: usage (EXIT_FAILURE); }