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[PATCH] kconfig: use gperf for kconfig keywords

瀏覽代碼 
Use gperf to generate a hash for the kconfig keywords.  This greatly reduces
the size of the generated scanner and makes it easier to extend kconfig.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Roman Zippel
2005-11-08 21:34:51 -08:00
committed by Linus Torvalds
父節點 491d711035
當前提交 7a88488bbc
共有 8 個文件被更改，包括 732 次插入 和 1777 次删除
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53
scripts/kconfig/zconf.l
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@@ -18,8 +18,7 @@
#define START_STRSIZE 16
char *text;
static char *text_ptr;
static char *text;
static int text_size, text_asize;
struct buffer {
@@ -38,23 +37,22 @@ void new_string(void)
{
text = malloc(START_STRSIZE);
text_asize = START_STRSIZE;
text_ptr = text;
text_size = 0;
*text_ptr = 0;
*text = 0;
}
void append_string(const char *str, int size)
{
int new_size = text_size + size + 1;
if (new_size > text_asize) {
new_size += START_STRSIZE - 1;
new_size &= -START_STRSIZE;
text = realloc(text, new_size);
text_asize = new_size;
text_ptr = text + text_size;
}
memcpy(text_ptr, str, size);
text_ptr += size;
memcpy(text + text_size, str, size);
text_size += size;
*text_ptr = 0;
text[text_size] = 0;
}
void alloc_string(const char *str, int size)
@@ -88,36 +86,12 @@ n [A-Za-z0-9_]
<COMMAND>{
"mainmenu" BEGIN(PARAM); return T_MAINMENU;
"menu" BEGIN(PARAM); return T_MENU;
"endmenu" BEGIN(PARAM); return T_ENDMENU;
"source" BEGIN(PARAM); return T_SOURCE;
"choice" BEGIN(PARAM); return T_CHOICE;
"endchoice" BEGIN(PARAM); return T_ENDCHOICE;
"comment" BEGIN(PARAM); return T_COMMENT;
"config" BEGIN(PARAM); return T_CONFIG;
"menuconfig" BEGIN(PARAM); return T_MENUCONFIG;
"help" BEGIN(PARAM); return T_HELP;
"if" BEGIN(PARAM); return T_IF;
"endif" BEGIN(PARAM); return T_ENDIF;
"depends" BEGIN(PARAM); return T_DEPENDS;
"requires" BEGIN(PARAM); return T_REQUIRES;
"optional" BEGIN(PARAM); return T_OPTIONAL;
"default" BEGIN(PARAM); return T_DEFAULT;
"prompt" BEGIN(PARAM); return T_PROMPT;
"tristate" BEGIN(PARAM); return T_TRISTATE;
"def_tristate" BEGIN(PARAM); return T_DEF_TRISTATE;
"bool" BEGIN(PARAM); return T_BOOLEAN;
"boolean" BEGIN(PARAM); return T_BOOLEAN;
"def_bool" BEGIN(PARAM); return T_DEF_BOOLEAN;
"def_boolean" BEGIN(PARAM); return T_DEF_BOOLEAN;
"int" BEGIN(PARAM); return T_INT;
"hex" BEGIN(PARAM); return T_HEX;
"string" BEGIN(PARAM); return T_STRING;
"select" BEGIN(PARAM); return T_SELECT;
"enable" BEGIN(PARAM); return T_SELECT;
"range" BEGIN(PARAM); return T_RANGE;
{n}+ {
struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
if (id && id->flags & TF_COMMAND) {
BEGIN(PARAM);
return id->token;
}
alloc_string(yytext, yyleng);
zconflval.string = text;
return T_WORD;
@@ -134,8 +108,6 @@ n [A-Za-z0-9_]
"!" return T_NOT;
"=" return T_EQUAL;
"!=" return T_UNEQUAL;
"if" return T_IF;
"on" return T_ON;
\"|\' {
str = yytext[0];
new_string();
@@ -144,6 +116,9 @@ n [A-Za-z0-9_]
\n BEGIN(INITIAL); current_file->lineno++; return T_EOL;
--- /* ignore */
({n}|[-/.])+ {
struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
if (id && id->flags & TF_PARAM)
return id->token;
alloc_string(yytext, yyleng);
zconflval.string = text;
return T_WORD;