diff mbox series

[25/27] kconfig: switch to ASSIGN_VAL state in the second lexer

Message ID 1544526070-16690-26-git-send-email-yamada.masahiro@socionext.com
State New
Headers show
Series kconfig: remove all reduce/shift conflicts, refactor lexer, fix various issues | expand

Commit Message

Masahiro Yamada Dec. 11, 2018, 11:01 a.m. UTC 
To simplify the generated lexer, switch to the ASSIGN_VAL state in
the hand-made lexer.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

---

 scripts/kconfig/zconf.l | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

-- 
2.7.4
diff mbox series

Patch

diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index c8823a4..d462507 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -25,6 +25,7 @@  static struct {
 	int lineno;
 } current_pos;
 
+static int prev_prev_token = T_EOL;
 static int prev_token = T_EOL;
 static char *text;
 static int text_size, text_asize;
@@ -124,9 +125,9 @@  n	[A-Za-z0-9_-]
 			return T_WORD;
 		free(yylval.string);
 	}
-	"="	{ BEGIN(ASSIGN_VAL); return T_EQUAL; }
-	":="	{ BEGIN(ASSIGN_VAL); return T_COLON_EQUAL; }
-	"+="	{ BEGIN(ASSIGN_VAL); return T_PLUS_EQUAL; }
+	"="	return T_EQUAL;
+	":="	return T_COLON_EQUAL;
+	"+="	return T_PLUS_EQUAL;
 	[[:blank:]]+
 	.	warn_ignored_character(*yytext);
 	\n	{
@@ -294,6 +295,11 @@  repeat:
 	if ((prev_token == T_EOL || prev_token == T_HELPTEXT) && token == T_EOL)
 		goto repeat;
 
+	if (prev_prev_token == T_EOL && prev_token == T_WORD &&
+	    (token == T_EQUAL || token == T_COLON_EQUAL || token == T_PLUS_EQUAL))
+		BEGIN(ASSIGN_VAL);
+
+	prev_prev_token = prev_token;
 	prev_token = token;
 
 	return token;