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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-12-11 20:01:09 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-12-22 00:25:56 +0900 |
| commit | 4b31a32caf0a28e4726f1bf267ff8a804ed864e2 (patch) | |
| tree | dae9a7d23fc26f0ce97cafe4311b4f8d74c78d92 | |
| parent | 824fa3b3b5e3647de0530328e8734c24418eec49 (diff) | |
| download | linux-4b31a32caf0a28e4726f1bf267ff8a804ed864e2.tar.bz2 | |
kconfig: update current_pos in the second lexer
To simplify the generated lexer, let the hand-made lexer update the
file name and line number for the parser.
I tested this with DEBUG_PARSE, and confirmed the same file names
and line numbers were dumped.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
| -rw-r--r-- | scripts/kconfig/zconf.l | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l index 05e2d95e3b22..9b083a176fb4 100644 --- a/scripts/kconfig/zconf.l +++ b/scripts/kconfig/zconf.l @@ -101,8 +101,6 @@ n [A-Za-z0-9_-] <COMMAND>{ {n}+ { const struct kconf_id *id = kconf_id_lookup(yytext, yyleng); - current_pos.file = current_file; - current_pos.lineno = yylineno; if (id && id->flags & TF_COMMAND) { BEGIN(PARAM); return id->token; @@ -285,9 +283,21 @@ int yylex(void) repeat: token = yylex1(); - /* Do not pass unneeded T_EOL to the parser. */ - if ((prev_token == T_EOL || prev_token == T_HELPTEXT) && token == T_EOL) - goto repeat; + if (prev_token == T_EOL || prev_token == T_HELPTEXT) { + if (token == T_EOL) { + /* Do not pass unneeded T_EOL to the parser. */ + goto repeat; + } else { + /* + * For the parser, update file/lineno at the first token + * of each statement. Generally, \n is a statement + * terminator in Kconfig, but it is not always true + * because \n could be escaped by a backslash. + */ + current_pos.file = current_file; + current_pos.lineno = yylineno; + } + } if (prev_prev_token == T_EOL && prev_token == T_WORD && (token == T_EQUAL || token == T_COLON_EQUAL || token == T_PLUS_EQUAL)) |