/* Scan Bison Skeletons. -*- C -*-
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 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., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
%option nodefault noyywrap nounput never-interactive debug
%option prefix="skel_" outfile="lex.yy.c"
#define QPUTS(String) \
fputs (quotearg_style (c_quoting_style, String), yyout)
-static void fail_for_at_directive_too_many_args (void);
+static void at_directive_perform (int at_directive_argc,
+ char *at_directive_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);
static void fail_for_invalid_at (char const *at);
-
-/* In SC_AT_DIRECTIVE_ARG context, the name of the directive. */
-static char *at_directive_name;
-
-/* Currently, only the @warn, @complain, and @fatal directives take multiple
- arguments, and they already can't take more than 5. */
-#define AT_DIRECTIVE_ARGC_MAX 5
-static int at_directive_argc = 0;
-static char *at_directive_argv[AT_DIRECTIVE_ARGC_MAX];
%}
-%x SC_AT_DIRECTIVE_ARG
+%x SC_AT_DIRECTIVE_ARGS
%x SC_AT_DIRECTIVE_SKIP_WS
%%
%{
- int lineno IF_LINT (= 0);
+ int out_lineno IF_LINT (= 0);
char *outname = NULL;
+
+ /* 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];
%}
-"@@" fputc ('@', yyout);
-"@{" fputc ('[', yyout);
-"@}" fputc (']', yyout);
+"@@" fputc ('@', yyout);
+"@{" fputc ('[', yyout);
+"@}" fputc (']', yyout);
+"@`" /* Emtpy. Used by b4_cat in ../data/bison.m4. */
+@\n /* Likewise. */
-"@oline@" fprintf (yyout, "%d", lineno + 1);
+"@oline@" fprintf (yyout, "%d", out_lineno + 1);
"@ofile@" QPUTS (outname);
"@dir_prefix@" QPUTS (dir_prefix);
@[a-z_]+"(" {
yytext[yyleng-1] = '\0';
- at_directive_name = xstrdup (yytext);
- BEGIN SC_AT_DIRECTIVE_ARG;
+ obstack_grow (&obstack_for_string, yytext, yyleng);
+ at_directive_argv[at_directive_argc++] =
+ obstack_finish (&obstack_for_string);
+ BEGIN SC_AT_DIRECTIVE_ARGS;
}
/* This pattern must not match more than the previous @ patterns. */
-@[^@{}(\n]* fail_for_invalid_at (yytext);
-\n lineno++; ECHO;
+@[^@{}`(\n]* fail_for_invalid_at (yytext);
+\n out_lineno++; ECHO;
[^@\n]+ ECHO;
<INITIAL><<EOF>> {
return EOF;
}
-<SC_AT_DIRECTIVE_ARG>{
- [^@\n]+ { STRING_GROW; }
- \n { ++lineno; STRING_GROW; }
+<SC_AT_DIRECTIVE_ARGS>{
+ [^@]+ { STRING_GROW; }
"@@" { obstack_1grow (&obstack_for_string, '@'); }
"@{" { obstack_1grow (&obstack_for_string, '['); }
"@}" { obstack_1grow (&obstack_for_string, ']'); }
"@`" /* Emtpy. Useful for starting an argument
that begins with whitespace. */
+ @\n /* Empty. */
@[,)] {
if (at_directive_argc >= AT_DIRECTIVE_ARGC_MAX)
- fail_for_at_directive_too_many_args ();
+ fail_for_at_directive_too_many_args (at_directive_argv[0]);
obstack_1grow (&obstack_for_string, '\0');
at_directive_argv[at_directive_argc++] =
BEGIN SC_AT_DIRECTIVE_SKIP_WS;
else
{
- if (0 == strcmp (at_directive_name, "@basename"))
- {
- if (at_directive_argc > 1)
- fail_for_at_directive_too_many_args ();
- fputs (last_component (at_directive_argv[0]), yyout);
- }
- else if (0 == strcmp (at_directive_name, "@warn")
- || 0 == strcmp (at_directive_name, "@complain")
- || 0 == strcmp (at_directive_name, "@fatal"))
- {
- void (*func)(char const *, ...);
- switch (at_directive_name[1])
- {
- case 'w': func = warn; break;
- case 'c': func = complain; break;
- case 'f': func = fatal; break;
- default: aver (false); func = NULL; break;
- }
- switch (at_directive_argc)
- {
- case 1:
- func (_(at_directive_argv[0]));
- break;
- case 2:
- func (_(at_directive_argv[0]), at_directive_argv[1]);
- break;
- case 3:
- func (_(at_directive_argv[0]), at_directive_argv[1],
- at_directive_argv[2]);
- break;
- case 4:
- func (_(at_directive_argv[0]), at_directive_argv[1],
- at_directive_argv[2], at_directive_argv[3]);
- break;
- case 5:
- func (_(at_directive_argv[0]), at_directive_argv[1],
- at_directive_argv[2], at_directive_argv[3],
- at_directive_argv[4]);
- break;
- default:
- fail_for_at_directive_too_many_args ();
- break;
- }
- }
- else if (0 == strcmp (at_directive_name, "@output"))
- {
- if (at_directive_argc > 1)
- fail_for_at_directive_too_many_args ();
- if (outname)
- {
- free (outname);
- xfclose (yyout);
- }
- outname = xstrdup (at_directive_argv[0]);
- output_file_name_check (outname);
- yyout = xfopen (outname, "w");
- lineno = 1;
- }
- else
- fail_for_invalid_at (at_directive_name);
-
+ 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;
- free (at_directive_name);
BEGIN INITIAL;
}
}
}
<SC_AT_DIRECTIVE_SKIP_WS>{
- [ \t\r]
- \n { ++lineno; }
- . { yyless (0); BEGIN SC_AT_DIRECTIVE_ARG; }
+ [ \t\r\n]
+ . { yyless (0); BEGIN SC_AT_DIRECTIVE_ARGS; }
}
-<SC_AT_DIRECTIVE_ARG,SC_AT_DIRECTIVE_SKIP_WS>{
+<SC_AT_DIRECTIVE_ARGS,SC_AT_DIRECTIVE_SKIP_WS>{
<<EOF>> {
- fatal (_("unclosed %s directive in skeleton"), at_directive_name);
+ fatal (_("unclosed %s directive in skeleton"), at_directive_argv[0]);
}
}
skel_in = in;
skel__flex_debug = trace_flag & trace_skeleton;
skel_lex ();
+}
+
+void
+skel_scanner_free (void)
+{
+ obstack_free (&obstack_for_string, 0);
/* Reclaim Flex's buffers. */
yylex_destroy ();
}
+static
+void at_directive_perform (int at_directive_argc,
+ char *at_directive_argv[],
+ char **outnamep, int *out_linenop)
+{
+ if (0 == strcmp (at_directive_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);
+ }
+ else if (0 == strcmp (at_directive_argv[0], "@warn")
+ || 0 == strcmp (at_directive_argv[0], "@complain")
+ || 0 == strcmp (at_directive_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)
+ {
+ case 2:
+ func (_(at_directive_argv[1]));
+ break;
+ case 3:
+ func (_(at_directive_argv[1]), at_directive_argv[2]);
+ break;
+ case 4:
+ func (_(at_directive_argv[1]), at_directive_argv[2],
+ at_directive_argv[3]);
+ break;
+ case 5:
+ func (_(at_directive_argv[1]), at_directive_argv[2],
+ at_directive_argv[3], at_directive_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]);
+ break;
+ default:
+ fail_for_at_directive_too_many_args (at_directive_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"))
+ {
+ void (*func)(location, char const *, ...);
+ 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)
+ {
+ case 4:
+ func (loc, _(at_directive_argv[3]));
+ break;
+ case 5:
+ func (loc, _(at_directive_argv[3]), at_directive_argv[4]);
+ break;
+ case 6:
+ func (loc, _(at_directive_argv[3]), at_directive_argv[4],
+ at_directive_argv[5]);
+ break;
+ case 7:
+ func (loc, _(at_directive_argv[3]), at_directive_argv[4],
+ at_directive_argv[5], at_directive_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]);
+ break;
+ default:
+ fail_for_at_directive_too_many_args (at_directive_argv[0]);
+ break;
+ }
+ }
+ else if (0 == strcmp (at_directive_argv[0], "@output"))
+ {
+ if (at_directive_argc > 2)
+ fail_for_at_directive_too_many_args (at_directive_argv[0]);
+ if (*outnamep)
+ {
+ free (*outnamep);
+ xfclose (yyout);
+ }
+ *outnamep = xstrdup (at_directive_argv[1]);
+ output_file_name_check (*outnamep);
+ yyout = xfopen (*outnamep, "w");
+ *out_linenop = 1;
+ }
+ else
+ fail_for_invalid_at (at_directive_argv[0]);
+}
+
static void
-fail_for_at_directive_too_many_args (void)
+fail_for_at_directive_too_few_args (char const *at_directive_name)
{
- fatal (_("too many arguments for %s directive in skeleton"),
+ fatal (_("too few arguments for %s directive in skeleton"),
at_directive_name);
}
static void
-fail_for_invalid_at (char const *at)
+fail_for_at_directive_too_many_args (char const *at_directive_name)
{
- fatal ("invalid @ in skeleton: %s", at);
+ fatal (_("too many arguments for %s directive in skeleton"),
+ at_directive_name);
}
-void
-skel_scanner_free (void)
+static void
+fail_for_invalid_at (char const *at)
{
- obstack_free (&obstack_for_string, 0);
+ fatal ("invalid @ in skeleton: %s", at);
}
projects / bison.git / blobdiff