X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/782e8187185a009ce698ad294c87e49a0a30c3a1..957255b82cdbf46a5f74d33862ad7edf7d0fa218:/src/scan-skel.l diff --git a/src/scan-skel.l b/src/scan-skel.l index 68f528cb..129b8899 100644 --- a/src/scan-skel.l +++ b/src/scan-skel.l @@ -1,6 +1,6 @@ /* Scan Bison Skeletons. -*- C -*- - Copyright (C) 2001-2012 Free Software Foundation, Inc. + Copyright (C) 2001-2013 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -41,8 +41,11 @@ #define YY_DECL static int skel_lex (void) YY_DECL; -static void at_directive_perform (int argc, char *argv[], - char **outnamep, int *out_linenop); +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); @@ -55,41 +58,39 @@ static void fail_for_invalid_at (char const *at); %{ int out_lineno PACIFY_CC (= 0); - char *outname = NULL; + char *out_name = 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. argv[0] is the directive name. */ - #define ARGC_MAX 8 + /* 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); -"@`" continue; /* Used by b4_cat in ../data/bison.m4. */ +"@'" continue; /* Used by b4_cat in ../data/bison.m4. */ @\n continue; "@oline@" fprintf (yyout, "%d", out_lineno + 1); -"@ofile@" fputs (quotearg_style (c_quoting_style, outname), yyout); +"@ofile@" fputs (quotearg_style (c_quoting_style, out_name), yyout); -@[a-z_]+"(" { - yytext[yyleng-1] = '\0'; - obstack_grow (&obstack_for_string, yytext, yyleng); - argv[argc++] = obstack_finish (&obstack_for_string); - BEGIN SC_AT_DIRECTIVE_ARGS; -} +"@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; @@ -102,7 +103,7 @@ static void fail_for_invalid_at (char const *at); "@@" obstack_1grow (&obstack_for_string, '@'); "@{" obstack_1grow (&obstack_for_string, '['); "@}" obstack_1grow (&obstack_for_string, ']'); - "@`" continue; /* For starting an argument that begins with whitespace. */ + "@'" continue; /* For starting an argument that begins with whitespace. */ @\n continue; @[,)] { @@ -116,7 +117,8 @@ static void fail_for_invalid_at (char const *at); BEGIN SC_AT_DIRECTIVE_SKIP_WS; else { - at_directive_perform (argc, argv, &outname, &out_lineno); + aver (at_ptr); + at_ptr (argc, argv, &out_name, &out_lineno); obstack_free (&obstack_for_string, argv[0]); argc = 0; BEGIN INITIAL; @@ -139,6 +141,16 @@ static void fail_for_invalid_at (char const *at); %% +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. | `------------------------*/ @@ -168,61 +180,74 @@ skel_scanner_free (void) 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; - } + /* 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_directive_perform (int argc, char *argv[], char **outnamep, int *out_linenop) +at_basename (int argc, char *argv[], char **out_namep, int *out_linenop) { - if (STREQ (argv[0], "@basename")) - { - if (argc > 2) - fail_for_at_directive_too_many_args (argv[0]); - fputs (last_component (argv[1]), yyout); - } - else if (STREQ (argv[0], "@warn") || STREQ (argv[0], "@warn_at") - || STREQ (argv[0], "@complain") || STREQ (argv[0], "@complain_at") - || STREQ (argv[0], "@fatal") || STREQ (argv[0], "@fatal_at")) + (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]) { - warnings w = flag (*argv); - location loc; - location *locp = NULL; - if (STREQ (*argv + strlen (*argv) - 3, "_at")) - { - 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]); - argc -= 2; - argv += 2; - locp = &loc; - } - else if (argc < 2) - fail_for_at_directive_too_few_args (argv[0]); - complain_args (locp, w, argc, argv); + boundary_set_from_string (&loc.start, argv[2]); + boundary_set_from_string (&loc.end, argv[3]); + locp = &loc; } - else if (STREQ (argv[0], "@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 (argc > 2) - fail_for_at_directive_too_many_args (argv[0]); - if (*outnamep) - { - free (*outnamep); - xfclose (yyout); - } - *outnamep = xstrdup (argv[1]); - output_file_name_check (outnamep); - yyout = xfopen (*outnamep, "w"); - *out_linenop = 1; + free (*out_namep); + xfclose (yyout); } - else - fail_for_invalid_at (argv[0]); + *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