X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/9fe5a4571e33f8d2a38051a3699a317dce70ec9d..76bf5102423b4d1597b214f77764075f55b5eb7b:/src/getargs.c?ds=inline diff --git a/src/getargs.c b/src/getargs.c index cb90c362..d7e43850 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, 2007, 2008 Free Software Foundation, Inc. + 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -47,17 +47,13 @@ #include "muscle_tab.h" #include "uniqstr.h" -bool debug_flag; bool defines_flag; bool graph_flag; bool xml_flag; -bool locations_flag; bool no_lines_flag; bool token_table_flag; bool yacc_flag; /* for -y */ -bool error_verbose = false; - bool nondeterministic_parser = false; bool glr_parser = false; @@ -72,9 +68,9 @@ static struct bison_language const valid_languages[] = { { "", "", "", "", false } }; -static int skeleton_prio = 2; +int skeleton_prio = default_prio; const char *skeleton = NULL; -static int language_prio = 2; +int language_prio = default_prio; struct bison_language const *language = &valid_languages[0]; const char *include = NULL; @@ -87,10 +83,12 @@ char *program_name; * \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. + * \param args comma separated list of effective subarguments to decode. * If 0, then activate all the flags. * - * The special value 0 resets the flags to 0. + * 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, @@ -102,11 +100,18 @@ flags_argmatch (const char *option, args = strtok (args, ","); while (args) { - int value = XARGMATCH (option, args, keys, values); + int no = strncmp (args, "no-", 3) == 0 ? 3 : 0; + int value = XARGMATCH (option, args + no, keys, values); if (value == 0) - *flags = 0; + if (no) + *flags = ~0; + else + *flags = 0; else - *flags |= value; + if (no) + *flags &= ~value; + else + *flags |= value; args = strtok (NULL, ","); } } @@ -176,6 +181,7 @@ static const char * const trace_args[] = "grammar - reading, reducing the grammar", "resource - memory consumption (where available)", "sets - grammar sets: firsts, nullable etc.", + "muscles - m4 definitions passed to the skeleton", "tools - m4 invocation", "m4 - m4 traces", "skeleton - skeleton postprocessing", @@ -194,6 +200,7 @@ static const int trace_types[] = trace_grammar, trace_resource, trace_sets, + trace_muscles, trace_tools, trace_m4, trace_skeleton, @@ -246,6 +253,11 @@ usage (int status) program_name); else { + /* 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. */ + printf (_("Usage: %s [OPTION]... FILE\n"), program_name); fputs (_("\ Generate LALR(1) and GLR parsers.\n\ @@ -277,7 +289,8 @@ Parser:\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\ -k, --token-table include a table of token names\n\ @@ -360,7 +373,7 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ `--------------------------------------*/ void -skeleton_arg (char const *arg, int prio, location const *loc) +skeleton_arg (char const *arg, int prio, location loc) { if (prio < skeleton_prio) { @@ -371,15 +384,12 @@ skeleton_arg (char const *arg, int prio, location const *loc) { char const *msg = _("multiple skeleton declarations are invalid"); - if (loc) - complain_at (*loc, msg); - else - complain (msg); + complain_at (loc, msg); } } void -language_argmatch (char const *arg, int prio, location const *loc) +language_argmatch (char const *arg, int prio, location loc) { char const *msg; @@ -400,10 +410,7 @@ language_argmatch (char const *arg, int prio, location const *loc) else return; - if (loc) - complain_at (*loc, msg, arg); - else - complain (msg, arg); + complain_at (loc, msg, arg); } /*----------------------. @@ -413,6 +420,7 @@ language_argmatch (char const *arg, int prio, location const *loc) /* Shorts options. Should be computed from long_options. */ static char const short_options[] = + "D:" "L:" "S:" "T::" @@ -479,6 +487,7 @@ static struct option const long_options[] = /* Parser. */ { "debug", no_argument, 0, 't' }, + { "define", required_argument, 0, 'D' }, { "locations", no_argument, 0, LOCATIONS_OPTION }, { "no-lines", no_argument, 0, 'l' }, { "raw", no_argument, 0, 0 }, @@ -497,6 +506,19 @@ 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[]) { @@ -506,15 +528,22 @@ getargs (int argc, char *argv[]) != -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 'd': - /* Here, the -d and --defines options are differentiated. */ - defines_flag = true; - if (optarg) - spec_defines_file = xstrdup (AS_FILE_NAME (optarg)); + 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 'I': @@ -522,11 +551,13 @@ getargs (int argc, char *argv[]) break; case 'L': - language_argmatch (optarg, 0, NULL); + language_argmatch (optarg, command_line_prio, + command_line_location ()); break; case 'S': - skeleton_arg (AS_FILE_NAME (optarg), 0, NULL); + skeleton_arg (AS_FILE_NAME (optarg), command_line_prio, + command_line_location ()); break; case 'T': @@ -548,6 +579,13 @@ getargs (int argc, char *argv[]) spec_file_prefix = 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 'g': graph_flag = true; if (optarg) @@ -578,7 +616,7 @@ getargs (int argc, char *argv[]) break; case 't': - debug_flag = true; + muscle_percent_define_insert ("debug", command_line_location (), ""); break; case 'v': @@ -596,7 +634,8 @@ getargs (int argc, char *argv[]) break; case LOCATIONS_OPTION: - locations_flag = true; + muscle_percent_define_ensure ("locations", + command_line_location (), true); break; case PRINT_LOCALEDIR_OPTION: