[PATCH 19/27] kconfig: use T_WORD instead of T_VARIABLE for variables

From: Masahiro Yamada
Date: Tue Dec 11 2018 - 06:01:52 EST


There is no grammatical ambiguity by using T_WORD for variables.
The parser can distinguish variables from symbols from the context.

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

scripts/kconfig/zconf.l | 4 ++--
scripts/kconfig/zconf.y | 3 +--
2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index 981b5f8..defb722 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -116,13 +116,13 @@ n [A-Za-z0-9_-]
}
alloc_string(yytext, yyleng);
yylval.string = text;
- return T_VARIABLE;
+ return T_WORD;
}
({n}|$)+ {
/* this token includes at least one '$' */
yylval.string = expand_token(yytext, yyleng);
if (strlen(yylval.string))
- return T_VARIABLE;
+ return T_WORD;
free(yylval.string);
}
"=" { BEGIN(ASSIGN_VAL); return T_EQUAL; }
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index 97f86e2..3c44d67 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -84,7 +84,6 @@ static struct menu *current_menu, *current_entry;
%token T_STRING
%token T_TRISTATE
%token T_EOL
-%token <string> T_VARIABLE
%token <string> T_ASSIGN_VAL

%left T_OR
@@ -480,7 +479,7 @@ word_opt: /* empty */ { $$ = NULL; }

/* assignment statement */

-assignment_stmt: T_VARIABLE assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
+assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }

assign_op:
T_EQUAL { $$ = VAR_RECURSIVE; }
--
2.7.4