%option nostdinit noyywrap never-interactive full ecs
%option 8bit nodefault yylineno
-%x COMMAND HELP STRING PARAM
+%x COMMAND HELP STRING PARAM ASSIGN_VAL
%{
/*
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
* Released under the terms of the GNU GPL v2.0.
*/
+#include <assert.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include "lkc.h"
+#define YY_DECL static int yylex1(void)
+
#define START_STRSIZE 16
static struct {
int lineno;
} current_pos;
+static int prev_token = T_EOL;
static char *text;
static int text_size, text_asize;
{
fprintf(stderr,
"%s:%d:warning: ignoring unsupported character '%c'\n",
- zconf_curname(), zconf_lineno(), chr);
+ current_file->name, yylineno, chr);
}
%}
return T_EOL;
}
[ \t]*#.*
-
-
-[ \t]+ {
- BEGIN(COMMAND);
-}
-
. {
unput(yytext[0]);
BEGIN(COMMAND);
<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;
}
alloc_string(yytext, yyleng);
yylval.string = text;
- return T_WORD;
+ return T_VARIABLE;
}
+ ({n}|$)+ {
+ /* this token includes at least one '$' */
+ yylval.string = expand_token(yytext, yyleng);
+ if (strlen(yylval.string))
+ return T_VARIABLE;
+ 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; }
+ [[:blank:]]+
. warn_ignored_character(*yytext);
\n {
BEGIN(INITIAL);
}
}
+<ASSIGN_VAL>{
+ [^[:blank:]\n]+.* {
+ alloc_string(yytext, yyleng);
+ yylval.string = text;
+ return T_ASSIGN_VAL;
+ }
+ \n { BEGIN(INITIAL); return T_EOL; }
+ .
+}
+
<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;
\\\n ;
[[:blank:]]+
. warn_ignored_character(*yytext);
- <<EOF>> {
- BEGIN(INITIAL);
- }
}
<STRING>{
"$".* append_expanded_string(yytext);
- [^$'"\\\n]+/\n {
- append_string(yytext, yyleng);
- yylval.string = text;
- return T_WORD_QUOTE;
- }
[^$'"\\\n]+ {
append_string(yytext, yyleng);
}
- \\.?/\n {
- append_string(yytext + 1, yyleng - 1);
- yylval.string = text;
- return T_WORD_QUOTE;
- }
\\.? {
append_string(yytext + 1, yyleng - 1);
}
fprintf(stderr,
"%s:%d:warning: multi-line strings not supported\n",
zconf_curname(), zconf_lineno());
+ unput('\n');
BEGIN(INITIAL);
- return T_EOL;
+ yylval.string = text;
+ return T_WORD_QUOTE;
}
<<EOF>> {
BEGIN(INITIAL);
+ yylval.string = text;
+ return T_WORD_QUOTE;
}
}
}
<<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;
+
+ prev_token = token;
+
+ return token;
+}
+
static char *expand_token(const char *in, size_t n)
{
char *out;