| From | Masahiro Yamada <> | Subject | [PATCH v4 10/31] kconfig: begin PARAM state only when seeing a command keyword | Date | Thu, 17 May 2018 15:16:49 +0900 |
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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 <yamada.masahiro@socionext.com> ---
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(-)
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l index 9dc5fe3..5e53348 100644 --- a/scripts/kconfig/zconf.l +++ b/scripts/kconfig/zconf.l @@ -102,10 +102,10 @@ n [A-Za-z0-9_-] <COMMAND>{ {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; } -- 2.7.4
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