kconfig: update current_pos in the second lexer

[carl9170fw.git] / config / zconf.l

diff --git a/config/zconf.l b/config/zconf.l
index 418ade946405a8dbf01b3c2154edbeeda9f360a7..052a9864b7ec5bd2a5b09f3313f10408d8b3538e 100644 (file)
--- a/config/zconf.l
+++ b/config/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;
@@ -100,27 +101,24 @@ 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);
-                       yylval.id = id;
                        return id->token;
                }
                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; }
-       ":="    { 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      {
@@ -160,17 +158,16 @@ n [A-Za-z0-9_-]
                BEGIN(STRING);
        }
        \n      BEGIN(INITIAL); return T_EOL;
-       ({n}|[/.])+     {
+       {n}+    {
                const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
                if (id && id->flags & TF_PARAM) {
-                       yylval.id = id;
                        return id->token;
                }
                alloc_string(yytext, yyleng);
                yylval.string = text;
                return T_WORD;
        }
-       ({n}|[/.$])+    {
+       ({n}|$)+        {
                /* this token includes at least one '$' */
                yylval.string = expand_token(yytext, yyleng);
                if (strlen(yylval.string))
@@ -286,10 +283,27 @@ 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))
+               BEGIN(ASSIGN_VAL);
 
+       prev_prev_token = prev_token;
        prev_token = token;
 
        return token;