#include "lkc.h"
+#define YY_DECL static int yylex1(void)
+
#define START_STRSIZE 16
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;
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); yylval.flavor = VAR_RECURSIVE; return T_ASSIGN; }
- ":=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_SIMPLE; return T_ASSIGN; }
- "+=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_APPEND; return T_ASSIGN; }
+ "=" return T_EQUAL;
+ ":=" return T_COLON_EQUAL;
+ "+=" return T_PLUS_EQUAL;
[[:blank:]]+
. warn_ignored_character(*yytext);
\n {
}
<PARAM>{
+ "modules" return T_MODULES;
+ "defconfig_list" return T_DEFCONFIG_LIST;
+ "allnoconfig_y" return T_ALLNOCONFIG_Y;
"&&" return T_AND;
"||" return T_OR;
"(" return T_OPEN_PAREN;
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))
\\\n ;
[[:blank:]]+
. warn_ignored_character(*yytext);
- <<EOF>> {
- BEGIN(INITIAL);
- }
}
<STRING>{
}
<<EOF>> {
+ BEGIN(INITIAL);
+
+ if (prev_token != T_EOL && prev_token != T_HELPTEXT)
+ fprintf(stderr, "%s:%d:warning: no new line at end of file\n",
+ current_file->name, yylineno);
+
if (current_file) {
zconf_endfile();
return T_EOL;
}
%%
+
+/* second stage lexer */
+int yylex(void)
+{
+ int token;
+
+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_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;
+}
+
static char *expand_token(const char *in, size_t n)
{
char *out;