X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/e9690142325711b320ef444768fdd40a087d02f7..bb8e56ff67d289d15f1a4dc7f5e1502cd3bbfc24:/src/scan-skel.l diff --git a/src/scan-skel.l b/src/scan-skel.l index a89e13cc..9854727d 100644 --- a/src/scan-skel.l +++ b/src/scan-skel.l @@ -1,6 +1,6 @@ /* Scan Bison Skeletons. -*- C -*- - Copyright (C) 2001-2011 Free Software Foundation, Inc. + Copyright (C) 2001-2012 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -41,11 +41,7 @@ #define YY_DECL static int skel_lex (void) YY_DECL; -#define QPUTS(String) \ - fputs (quotearg_style (c_quoting_style, String), yyout) - -static void at_directive_perform (int at_directive_argc, - char *at_directive_argv[], +static void at_directive_perform (int argc, char *argv[], char **outnamep, int *out_linenop); static void fail_for_at_directive_too_many_args (char const *at_directive_name); static void fail_for_at_directive_too_few_args (char const *at_directive_name); @@ -63,27 +59,25 @@ static void fail_for_invalid_at (char const *at); /* Currently, only the @warn, @complain, @fatal, @warn_at, @complain_at, and @fatal_at directives take multiple arguments, and the last three already - can't take more than 7. at_directive_argv[0] is the directive name. */ - #define AT_DIRECTIVE_ARGC_MAX 8 - int at_directive_argc = 0; - char *at_directive_argv[AT_DIRECTIVE_ARGC_MAX]; + can't take more than 7. argv[0] is the directive name. */ + #define ARGC_MAX 8 + int argc = 0; + char *argv[ARGC_MAX]; %} "@@" fputc ('@', yyout); "@{" fputc ('[', yyout); "@}" fputc (']', yyout); -"@`" /* Emtpy. Used by b4_cat in ../data/bison.m4. */ -@\n /* Likewise. */ +"@`" continue; /* Used by b4_cat in ../data/bison.m4. */ +@\n continue; "@oline@" fprintf (yyout, "%d", out_lineno + 1); -"@ofile@" QPUTS (outname); -"@dir_prefix@" QPUTS (dir_prefix); +"@ofile@" fputs (quotearg_style (c_quoting_style, outname), yyout); @[a-z_]+"(" { yytext[yyleng-1] = '\0'; obstack_grow (&obstack_for_string, yytext, yyleng); - at_directive_argv[at_directive_argc++] = - obstack_finish (&obstack_for_string); + argv[argc++] = obstack_finish (&obstack_for_string); BEGIN SC_AT_DIRECTIVE_ARGS; } @@ -101,49 +95,46 @@ static void fail_for_invalid_at (char const *at); return EOF; } -{ - [^@]+ { STRING_GROW; } + +{ + [^@]+ STRING_GROW; - "@@" { obstack_1grow (&obstack_for_string, '@'); } - "@{" { obstack_1grow (&obstack_for_string, '['); } - "@}" { obstack_1grow (&obstack_for_string, ']'); } - "@`" /* Empty. Useful for starting an argument - that begins with whitespace. */ - @\n /* Empty. */ + "@@" obstack_1grow (&obstack_for_string, '@'); + "@{" obstack_1grow (&obstack_for_string, '['); + "@}" obstack_1grow (&obstack_for_string, ']'); + "@`" continue; /* For starting an argument that begins with whitespace. */ + @\n continue; @[,)] { - if (at_directive_argc >= AT_DIRECTIVE_ARGC_MAX) - fail_for_at_directive_too_many_args (at_directive_argv[0]); + if (argc >= ARGC_MAX) + fail_for_at_directive_too_many_args (argv[0]); - obstack_1grow (&obstack_for_string, '\0'); - at_directive_argv[at_directive_argc++] = - obstack_finish (&obstack_for_string); + argv[argc++] = obstack_finish0 (&obstack_for_string); /* Like M4, skip whitespace after a comma. */ if (yytext[1] == ',') BEGIN SC_AT_DIRECTIVE_SKIP_WS; else { - at_directive_perform (at_directive_argc, at_directive_argv, - &outname, &out_lineno); - obstack_free (&obstack_for_string, at_directive_argv[0]); - at_directive_argc = 0; + at_directive_perform (argc, argv, &outname, &out_lineno); + obstack_free (&obstack_for_string, argv[0]); + argc = 0; BEGIN INITIAL; } } - @.? { fail_for_invalid_at (yytext); } + @.? fail_for_invalid_at (yytext); } -{ - [ \t\r\n] - . { yyless (0); BEGIN SC_AT_DIRECTIVE_ARGS; } + +{ + [ \t\r\n] continue; + . yyless (0); BEGIN SC_AT_DIRECTIVE_ARGS; } -{ - <> { - fatal (_("unclosed %s directive in skeleton"), at_directive_argv[0]); - } + +{ + <> complain (NULL, fatal, _("unclosed %s directive in skeleton"), argv[0]); } %% @@ -174,132 +165,121 @@ skel_scanner_free (void) yylex_destroy (); } +static inline warnings +flag (const char *arg) +{ + switch (arg[1]) + { + case 'w': return Wother; + case 'c': return complaint; + case 'f': return fatal; + default: aver (false); break; + } +} + static void -at_directive_perform (int at_directive_argc, - char *at_directive_argv[], - char **outnamep, int *out_linenop) +at_directive_perform (int argc, char *argv[], char **outnamep, int *out_linenop) { - if (0 == strcmp (at_directive_argv[0], "@basename")) + if (STREQ (argv[0], "@basename")) { - if (at_directive_argc > 2) - fail_for_at_directive_too_many_args (at_directive_argv[0]); - fputs (last_component (at_directive_argv[1]), yyout); + if (argc > 2) + fail_for_at_directive_too_many_args (argv[0]); + fputs (last_component (argv[1]), yyout); } - else if (0 == strcmp (at_directive_argv[0], "@warn") - || 0 == strcmp (at_directive_argv[0], "@complain") - || 0 == strcmp (at_directive_argv[0], "@fatal")) + else if (STREQ (argv[0], "@warn") + || STREQ (argv[0], "@complain") + || STREQ (argv[0], "@fatal")) { - void (*func)(char const *, ...); - switch (at_directive_argv[0][1]) - { - case 'w': func = warn; break; - case 'c': func = complain; break; - case 'f': func = fatal; break; - default: aver (false); break; - } - switch (at_directive_argc) + warnings w = flag (argv[0]); + switch (argc) { case 2: - func (_(at_directive_argv[1])); + complain (NULL, w, "%s", _(argv[1])); break; case 3: - func (_(at_directive_argv[1]), at_directive_argv[2]); + complain (NULL, w, _(argv[1]), argv[2]); break; case 4: - func (_(at_directive_argv[1]), at_directive_argv[2], - at_directive_argv[3]); + complain (NULL, w, _(argv[1]), argv[2], argv[3]); break; case 5: - func (_(at_directive_argv[1]), at_directive_argv[2], - at_directive_argv[3], at_directive_argv[4]); + complain (NULL, w, _(argv[1]), argv[2], argv[3], argv[4]); break; case 6: - func (_(at_directive_argv[1]), at_directive_argv[2], - at_directive_argv[3], at_directive_argv[4], - at_directive_argv[5]); + complain (NULL, w, _(argv[1]), argv[2], argv[3], argv[4], argv[5]); break; default: - fail_for_at_directive_too_many_args (at_directive_argv[0]); + fail_for_at_directive_too_many_args (argv[0]); break; } } - else if (0 == strcmp (at_directive_argv[0], "@warn_at") - || 0 == strcmp (at_directive_argv[0], "@complain_at") - || 0 == strcmp (at_directive_argv[0], "@fatal_at")) + else if (STREQ (argv[0], "@warn_at") + || STREQ (argv[0], "@complain_at") + || STREQ (argv[0], "@fatal_at")) { - void (*func)(location, char const *, ...); + warnings w = flag (argv[0]); location loc; - if (at_directive_argc < 4) - fail_for_at_directive_too_few_args (at_directive_argv[0]); - switch (at_directive_argv[0][1]) - { - case 'w': func = warn_at; break; - case 'c': func = complain_at; break; - case 'f': func = fatal_at; break; - default: aver (false); break; - } - boundary_set_from_string (&loc.start, at_directive_argv[1]); - boundary_set_from_string (&loc.end, at_directive_argv[2]); - switch (at_directive_argc) + if (argc < 4) + fail_for_at_directive_too_few_args (argv[0]); + boundary_set_from_string (&loc.start, argv[1]); + boundary_set_from_string (&loc.end, argv[2]); + switch (argc) { case 4: - func (loc, _(at_directive_argv[3])); + complain (&loc, w, "%s", _(argv[3])); break; case 5: - func (loc, _(at_directive_argv[3]), at_directive_argv[4]); + complain (&loc, w, _(argv[3]), argv[4]); break; case 6: - func (loc, _(at_directive_argv[3]), at_directive_argv[4], - at_directive_argv[5]); + complain (&loc, w, _(argv[3]), argv[4], argv[5]); break; case 7: - func (loc, _(at_directive_argv[3]), at_directive_argv[4], - at_directive_argv[5], at_directive_argv[6]); + complain (&loc, w, _(argv[3]), argv[4], argv[5], argv[6]); break; case 8: - func (loc, _(at_directive_argv[3]), at_directive_argv[4], - at_directive_argv[5], at_directive_argv[6], - at_directive_argv[7]); + complain (&loc, w, _(argv[3]), argv[4], argv[5], argv[6], + argv[7]); break; default: - fail_for_at_directive_too_many_args (at_directive_argv[0]); + fail_for_at_directive_too_many_args (argv[0]); break; } } - else if (0 == strcmp (at_directive_argv[0], "@output")) + else if (STREQ (argv[0], "@output")) { - if (at_directive_argc > 2) - fail_for_at_directive_too_many_args (at_directive_argv[0]); + if (argc > 2) + fail_for_at_directive_too_many_args (argv[0]); if (*outnamep) { free (*outnamep); xfclose (yyout); } - *outnamep = xstrdup (at_directive_argv[1]); + *outnamep = xstrdup (argv[1]); output_file_name_check (outnamep); yyout = xfopen (*outnamep, "w"); *out_linenop = 1; } else - fail_for_invalid_at (at_directive_argv[0]); + fail_for_invalid_at (argv[0]); } static void fail_for_at_directive_too_few_args (char const *at_directive_name) { - fatal (_("too few arguments for %s directive in skeleton"), - at_directive_name); + complain (NULL, fatal, _("too few arguments for %s directive in skeleton"), + at_directive_name); } static void fail_for_at_directive_too_many_args (char const *at_directive_name) { - fatal (_("too many arguments for %s directive in skeleton"), - at_directive_name); + complain (NULL, fatal, _("too many arguments for %s directive in skeleton"), + at_directive_name); } static void fail_for_invalid_at (char const *at) { - fatal ("invalid @ in skeleton: %s", at); + complain (NULL, fatal, "invalid @ in skeleton: %s", at); }