X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/5f340b4884a158f9d05e9325c4cfde2751f3e660..a26424642b1de2c5e237cd69a54f12b2f430321f:/src/scan-skel.l
diff --git a/src/scan-skel.l b/src/scan-skel.l
index d9ca8e28..ed61b5c8 100644
--- a/src/scan-skel.l
+++ b/src/scan-skel.l
@@ -1,26 +1,23 @@
/* Scan Bison Skeletons. -*- C -*-
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
- Foundation, Inc.
+ Copyright (C) 2001-2007, 2009-2012 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 . */
-%option nodefault noyywrap nounput never-interactive debug
+%option nodefault noyywrap noinput nounput never-interactive debug
%option prefix="skel_" outfile="lex.yy.c"
%{
@@ -47,50 +44,52 @@ YY_DECL;
#define QPUTS(String) \
fputs (quotearg_style (c_quoting_style, String), yyout)
-static void at_directive_perform (char **outnamep, int *out_linenop);
-static void fail_for_at_directive_too_many_args (void);
-static void fail_for_at_directive_too_few_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, @fatal, @warn_at, @complain_at, and
- @fatal_at directives take multiple arguments, and the last three already
- can't take more than 7. */
-#define AT_DIRECTIVE_ARGC_MAX 7
-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 out_lineno IF_LINT (= 0);
+ int out_lineno PACIFY_CC (= 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);
+"@`" 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);
@[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 out_lineno++; ECHO;
-[^@\n]+ ECHO;
+@[^@{}`(\n]* fail_for_invalid_at (yytext);
+\n out_lineno++; ECHO;
+[^@\n]+ ECHO;
<> {
if (outname)
@@ -101,18 +100,19 @@ static char *at_directive_argv[AT_DIRECTIVE_ARGC_MAX];
return EOF;
}
-{
- [^@]+ { STRING_GROW; }
+
+{
+ [^@]+ 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. */
+ "@@" 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 ();
+ fail_for_at_directive_too_many_args (at_directive_argv[0]);
obstack_1grow (&obstack_for_string, '\0');
at_directive_argv[at_directive_argc++] =
@@ -123,25 +123,27 @@ static char *at_directive_argv[AT_DIRECTIVE_ARGC_MAX];
BEGIN SC_AT_DIRECTIVE_SKIP_WS;
else
{
- at_directive_perform (&outname, &out_lineno);
+ 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;
}
}
- @.? { fail_for_invalid_at (yytext); }
+ @.? fail_for_invalid_at (yytext);
}
-{
- [ \t\r\n]
- . { yyless (0); BEGIN SC_AT_DIRECTIVE_ARG; }
+
+{
+ [ \t\r\n] continue;
+ . { yyless (0); BEGIN SC_AT_DIRECTIVE_ARGS; }
}
-{
+
+{
<> {
- fatal (_("unclosed %s directive in skeleton"), at_directive_name);
+ fatal (_("unclosed %s directive in skeleton"), at_directive_argv[0]);
}
}
@@ -163,133 +165,135 @@ scan_skel (FILE *in)
skel_in = in;
skel__flex_debug = trace_flag & trace_skeleton;
skel_lex ();
- /* Reclaim Flex's buffers. */
- yylex_destroy ();
}
void
skel_scanner_free (void)
{
obstack_free (&obstack_for_string, 0);
+ /* Reclaim Flex's buffers. */
+ yylex_destroy ();
}
-static
-void at_directive_perform (char **outnamep, int *out_linenop)
+static void
+at_directive_perform (int at_directive_argc,
+ char *at_directive_argv[],
+ char **outnamep, int *out_linenop)
{
- if (0 == strcmp (at_directive_name, "@basename"))
+ if (0 == strcmp (at_directive_argv[0], "@basename"))
{
- if (at_directive_argc > 1)
- fail_for_at_directive_too_many_args ();
- fputs (last_component (at_directive_argv[0]), yyout);
+ 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_name, "@warn")
- || 0 == strcmp (at_directive_name, "@complain")
- || 0 == strcmp (at_directive_name, "@fatal"))
+ 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_name[1])
+ switch (at_directive_argv[0][1])
{
case 'w': func = warn; break;
case 'c': func = complain; break;
case 'f': func = fatal; break;
- default: aver (false); func = NULL; break;
+ default: aver (false); break;
}
switch (at_directive_argc)
{
- case 1:
- func (_(at_directive_argv[0]));
- break;
case 2:
- func (_(at_directive_argv[0]), at_directive_argv[1]);
+ func (_(at_directive_argv[1]));
break;
case 3:
- func (_(at_directive_argv[0]), at_directive_argv[1],
- at_directive_argv[2]);
+ func (_(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]);
+ func (_(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]);
+ 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 ();
+ fail_for_at_directive_too_many_args (at_directive_argv[0]);
break;
}
}
- else if (0 == strcmp (at_directive_name, "@warn_at")
- || 0 == strcmp (at_directive_name, "@complain_at")
- || 0 == strcmp (at_directive_name, "@fatal_at"))
+ 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 < 3)
- fail_for_at_directive_too_few_args ();
- switch (at_directive_name[1])
+ 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); func = NULL; break;
+ default: aver (false); break;
}
- boundary_set_from_string (&loc.start, at_directive_argv[0]);
- boundary_set_from_string (&loc.end, at_directive_argv[1]);
+ 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 3:
- func (loc, _(at_directive_argv[2]));
- break;
case 4:
- func (loc, _(at_directive_argv[2]), at_directive_argv[3]);
+ func (loc, _(at_directive_argv[3]));
break;
case 5:
- func (loc, _(at_directive_argv[2]), at_directive_argv[3],
- at_directive_argv[4]);
+ func (loc, _(at_directive_argv[3]), at_directive_argv[4]);
break;
case 6:
- func (loc, _(at_directive_argv[2]), at_directive_argv[3],
- at_directive_argv[4], at_directive_argv[5]);
+ func (loc, _(at_directive_argv[3]), at_directive_argv[4],
+ at_directive_argv[5]);
break;
case 7:
- func (loc, _(at_directive_argv[2]), at_directive_argv[3],
- at_directive_argv[4], at_directive_argv[5],
- at_directive_argv[6]);
+ 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 ();
+ fail_for_at_directive_too_many_args (at_directive_argv[0]);
break;
}
}
- else if (0 == strcmp (at_directive_name, "@output"))
+ else if (0 == strcmp (at_directive_argv[0], "@output"))
{
- if (at_directive_argc > 1)
- fail_for_at_directive_too_many_args ();
+ 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[0]);
- output_file_name_check (*outnamep);
+ *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_name);
+ fail_for_invalid_at (at_directive_argv[0]);
}
static void
-fail_for_at_directive_too_few_args (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);
}
static void
-fail_for_at_directive_too_many_args (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);