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Rodriguez" , Randy Dunlap , Ulf Magnusson , Sam Ravnborg , Linus Torvalds , Masahiro Yamada Subject: [PATCH v5 11/31] kconfig: begin PARAM state only when seeing a command keyword Date: Mon, 28 May 2018 18:21:48 +0900 Message-Id: <1527499328-13213-12-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1527499328-13213-1-git-send-email-yamada.masahiro@socionext.com> References: <1527499328-13213-1-git-send-email-yamada.masahiro@socionext.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently, any statement line starts with a keyword with TF_COMMAND flag. So, the following three lines are dead code. alloc_string(yytext, yyleng); zconflval.string = text; return T_WORD; If a T_WORD token is returned in this context, it will cause syntax error in the parser anyway. The next commit will support the assignment statement where a line starts with an arbitrary identifier. So, I want the lexer to switch to the PARAM state only when it sees a command keyword. Signed-off-by: Masahiro Yamada --- Changes in v5: None Changes in v4: None Changes in v3: - Newly added Changes in v2: None scripts/kconfig/zconf.l | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.7.4 diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l index b385590..9a14797 100644 --- a/scripts/kconfig/zconf.l +++ b/scripts/kconfig/zconf.l @@ -102,10 +102,10 @@ n [A-Za-z0-9_-] { {n}+ { const struct kconf_id *id = kconf_id_lookup(yytext, yyleng); - BEGIN(PARAM); current_pos.file = current_file; current_pos.lineno = yylineno; if (id && id->flags & TF_COMMAND) { + BEGIN(PARAM); yylval.id = id; return id->token; }