X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3fc65ead4d318a3dbde92afab9956af14dc73b42..957255b82cdbf46a5f74d33862ad7edf7d0fa218:/src/scan-skel.l?ds=sidebyside diff --git a/src/scan-skel.l b/src/scan-skel.l index ed9d6d0d..129b8899 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 Free Software - Foundation, Inc. + Copyright (C) 2001-2013 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" %{ @@ -30,123 +27,130 @@ #define skel_wrap() 1 #define FLEX_PREFIX(Id) skel_ ## Id -#include "flex-scanner.h" +#include #include #include #include -#include "complain.h" -#include "getargs.h" -#include "files.h" -#include "scan-skel.h" +#include +#include +#include +#include #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 (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); +typedef void (*at_directive)(int, char**, char **, int*); +static void at_init (int *argc, char *argv[], at_directive *at_ptr, at_directive fun); +static void at_basename (int argc, char *argv[], char**, int*); +static void at_complain (int argc, char *argv[], char**, int*); +static void at_output (int argc, char *argv[], char **name, int *lineno); +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); - char *outname = NULL; + int out_lineno PACIFY_CC (= 0); + char *out_name = NULL; + + /* Currently, only the @complain directive takes multiple arguments, and + never more than 7, with argv[0] being the directive name and argv[1] + being the type of complaint to dispatch. */ +#define ARGC_MAX 9 + int argc = 0; + char *argv[ARGC_MAX]; + at_directive at_ptr = NULL; %} -"@@" 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); +"@ofile@" fputs (quotearg_style (c_quoting_style, out_name), yyout); -@[a-z_]+"(" { - yytext[yyleng-1] = '\0'; - at_directive_name = xstrdup (yytext); - BEGIN SC_AT_DIRECTIVE_ARG; -} +"@basename(" at_init (&argc, argv, &at_ptr, &at_basename); +"@complain(" at_init (&argc, argv, &at_ptr, &at_complain); +"@output(" at_init (&argc, argv, &at_ptr, &at_output); /* 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) + if (out_name) { - free (outname); + free (out_name); xfclose (yyout); } 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 (); + 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 (&outname, &out_lineno); - obstack_free (&obstack_for_string, at_directive_argv[0]); - at_directive_argc = 0; - free (at_directive_name); + aver (at_ptr); + at_ptr (argc, argv, &out_name, &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_ARG; } + +{ + [ \t\r\n] continue; + . yyless (0); BEGIN SC_AT_DIRECTIVE_ARGS; } -{ - <> { - fatal (_("unclosed %s directive in skeleton"), at_directive_name); - } + +{ + <> complain (NULL, fatal, _("unclosed %s directive in skeleton"), argv[0]); } %% +static void +at_init (int *argc, char *argv[], at_directive *at_ptr, at_directive fun) +{ + *at_ptr = fun; + yytext[yyleng-1] = '\0'; + obstack_grow (&obstack_for_string, yytext, yyleng); + argv[(*argc)++] = obstack_finish (&obstack_for_string); + BEGIN SC_AT_DIRECTIVE_ARGS; +} + /*------------------------. | Scan a Bison skeleton. | `------------------------*/ @@ -163,140 +167,105 @@ 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 inline warnings +flag (const char *arg) { - 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, "@warn_at") - || 0 == strcmp (at_directive_name, "@complain_at") - || 0 == strcmp (at_directive_name, "@fatal_at")) + /* compare with values issued from b4_error */ + if (STREQ (arg, "complain")) + return complaint; + else if (STREQ (arg, "deprecated")) + return Wdeprecated; + else if (STREQ (arg, "fatal")) + return fatal; + else if (STREQ (arg, "note")) + return silent | complaint | no_caret; + else if (STREQ (arg, "warn")) + return Wother; + else + aver (false); +} + +static void +at_basename (int argc, char *argv[], char **out_namep, int *out_linenop) +{ + (void) out_namep; + (void) out_linenop; + if (2 < argc) + fail_for_at_directive_too_many_args (argv[0]); + fputs (last_component (argv[1]), yyout); +} + +static void +at_complain (int argc, char *argv[], char **out_namep, int *out_linenop) +{ + static unsigned indent; + warnings w = flag (argv[1]); + location loc; + location *locp = NULL; + + (void) out_namep; + (void) out_linenop; + + if (argc < 4) + fail_for_at_directive_too_few_args (argv[0]); + if (argv[2] && argv[2][0]) { - void (*func)(location, char const *, ...); - location loc; - if (at_directive_argc < 3) - fail_for_at_directive_too_few_args (); - switch (at_directive_name[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; - } - boundary_set_from_string (&loc.start, at_directive_argv[0]); - boundary_set_from_string (&loc.end, at_directive_argv[1]); - 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]); - break; - case 5: - func (loc, _(at_directive_argv[2]), 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]); - 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]); - break; - default: - fail_for_at_directive_too_many_args (); - break; - } + boundary_set_from_string (&loc.start, argv[2]); + boundary_set_from_string (&loc.end, argv[3]); + locp = &loc; } - else if (0 == strcmp (at_directive_name, "@output")) + if (w & silent) + indent += SUB_INDENT; + else + indent = 0; + complain_args (locp, w, &indent, argc - 4, argv + 4); + if (w & silent) + indent -= SUB_INDENT; +} + +static void +at_output (int argc, char *argv[], char **out_namep, int *out_linenop) +{ + if (2 < argc) + fail_for_at_directive_too_many_args (argv[0]); + if (*out_namep) { - if (at_directive_argc > 1) - fail_for_at_directive_too_many_args (); - if (*outnamep) - { - free (*outnamep); - xfclose (yyout); - } - *outnamep = xstrdup (at_directive_argv[0]); - output_file_name_check (*outnamep); - yyout = xfopen (*outnamep, "w"); - *out_linenop = 1; + free (*out_namep); + xfclose (yyout); } - else - fail_for_invalid_at (at_directive_name); + *out_namep = xstrdup (argv[1]); + output_file_name_check (out_namep, true); + /* If there were errors, do not generate the output. */ + yyout = xfopen (complaint_status ? "/dev/null" : *out_namep, "w"); + *out_linenop = 1; } 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); + complain (NULL, 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); + 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); }