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kconfig: use default 'yy' prefix for lexer and parser 

Flex and Bison provide an option to change the prefix of globally-
visible symbols.  This is useful to link multiple lexers and/or
parsers into the same executable.  However, Kconfig (and any other
host programs in kernel) uses a single lexer and parser.  I do not
see a good reason to change the default 'yy' prefix.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Ulf Magnusson <ulfalizer@gmail.com>
This commit is contained in:
Masahiro Yamada 2018-01-12 00:50:50 +09:00
parent 84dd95d4f8
commit 765f4cdef6
3 changed files with 19 additions and 22 deletions
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3
scripts/kconfig/Makefile
View File

@ -211,9 +211,6 @@ HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCC)
HOSTCFLAGS_zconf.lex.o := -I$(src)
HOSTCFLAGS_zconf.tab.o := -I$(src)
LEX_PREFIX_zconf := zconf
YACC_PREFIX_zconf := zconf
HOSTLOADLIBES_qconf = $(KC_QT_LIBS)
HOSTCXXFLAGS_qconf.o = $(KC_QT_CFLAGS)

16
scripts/kconfig/zconf.l
View File

@ -106,11 +106,11 @@ n [A-Za-z0-9_-]
current_pos.file = current_file;
current_pos.lineno = current_file->lineno;
if (id && id->flags & TF_COMMAND) {
zconflval.id = id;
yylval.id = id;
return id->token;
}
alloc_string(yytext, yyleng);
zconflval.string = text;
yylval.string = text;
return T_WORD;
}
. warn_ignored_character(*yytext);
@ -142,11 +142,11 @@ n [A-Za-z0-9_-]
({n}|[/.])+ {
const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
if (id && id->flags & TF_PARAM) {
zconflval.id = id;
yylval.id = id;
return id->token;
}
alloc_string(yytext, yyleng);
zconflval.string = text;
yylval.string = text;
return T_WORD;
}
#.* /* comment */
@ -161,7 +161,7 @@ n [A-Za-z0-9_-]
<STRING>{
[^'"\\\n]+/\n {
append_string(yytext, yyleng);
zconflval.string = text;
yylval.string = text;
return T_WORD_QUOTE;
}
[^'"\\\n]+ {
@ -169,7 +169,7 @@ n [A-Za-z0-9_-]
}
\\.?/\n {
append_string(yytext + 1, yyleng - 1);
zconflval.string = text;
yylval.string = text;
return T_WORD_QUOTE;
}
\\.? {
@ -178,7 +178,7 @@ n [A-Za-z0-9_-]
\'|\" {
if (str == yytext[0]) {
BEGIN(PARAM);
zconflval.string = text;
yylval.string = text;
return T_WORD_QUOTE;
} else
append_string(yytext, 1);
@ -261,7 +261,7 @@ void zconf_starthelp(void)
static void zconf_endhelp(void)
{
zconflval.string = text;
yylval.string = text;
BEGIN(INITIAL);
}

22
scripts/kconfig/zconf.y
View File

@ -20,10 +20,10 @@
int cdebug = PRINTD;
extern int zconflex(void);
int yylex(void);
static void yyerror(const char *err);
static void zconfprint(const char *err, ...);
static void zconf_error(const char *err, ...);
static void zconferror(const char *err);
static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken);
struct symbol *symbol_hash[SYMBOL_HASHSIZE];
@ -531,9 +531,9 @@ void conf_parse(const char *name)
_menu_init();
if (getenv("ZCONF_DEBUG"))
zconfdebug = 1;
zconfparse();
if (zconfnerrs)
yydebug = 1;
yyparse();
if (yynerrs)
exit(1);
if (!modules_sym)
modules_sym = sym_find( "n" );
@ -546,9 +546,9 @@ void conf_parse(const char *name)
menu_finalize(&rootmenu);
for_all_symbols(i, sym) {
if (sym_check_deps(sym))
zconfnerrs++;
yynerrs++;
}
if (zconfnerrs)
if (yynerrs)
exit(1);
sym_set_change_count(1);
}
@ -573,7 +573,7 @@ static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtok
if (id->token != endtoken) {
zconf_error("unexpected '%s' within %s block",
id->name, zconf_tokenname(starttoken));
zconfnerrs++;
yynerrs++;
return false;
}
if (current_menu->file != current_file) {
@ -582,7 +582,7 @@ static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtok
fprintf(stderr, "%s:%d: location of the '%s'\n",
current_menu->file->name, current_menu->lineno,
zconf_tokenname(starttoken));
zconfnerrs++;
yynerrs++;
return false;
}
return true;
@ -603,7 +603,7 @@ static void zconf_error(const char *err, ...)
{
va_list ap;
zconfnerrs++;
yynerrs++;
fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
va_start(ap, err);
vfprintf(stderr, err, ap);
@ -611,7 +611,7 @@ static void zconf_error(const char *err, ...)
fprintf(stderr, "\n");
}
static void zconferror(const char *err)
static void yyerror(const char *err)
{
fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
}