From a02f0570ae201c495ee991b959bb974af18f35cc Mon Sep 17 00:00:00 2001 From: Roman Zippel Date: Tue, 8 Nov 2005 21:34:53 -0800 Subject: [PATCH] kconfig: improve error handling in the parser Add a few error tokens to the parser to catch common errors and print more descriptive error messages. Signed-off-by: Roman Zippel Cc: Sam Ravnborg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/kconfig/lex.zconf.c_shipped | 57 +++++++++++++++++++------------------ 1 file changed, 30 insertions(+), 27 deletions(-) (limited to 'scripts/kconfig/lex.zconf.c_shipped') diff --git a/scripts/kconfig/lex.zconf.c_shipped b/scripts/kconfig/lex.zconf.c_shipped index bedba89..24e3c8c 100644 --- a/scripts/kconfig/lex.zconf.c_shipped +++ b/scripts/kconfig/lex.zconf.c_shipped @@ -323,7 +323,7 @@ void zconffree (void * ); /* Begin user sect3 */ -#define zconfwrap(n) 1 +#define zconfwrap() 1 #define YY_SKIP_YYWRAP typedef unsigned char YY_CHAR; @@ -686,10 +686,10 @@ struct yy_trans_info static yyconst flex_int16_t yy_accept[61] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 34, 5, 4, 3, 2, 7, 8, 6, 32, 29, + 34, 5, 4, 2, 3, 7, 8, 6, 32, 29, 31, 24, 28, 27, 26, 22, 17, 13, 16, 20, - 22, 11, 12, 19, 19, 14, 22, 22, 4, 3, - 2, 2, 1, 6, 32, 29, 31, 30, 24, 23, + 22, 11, 12, 19, 19, 14, 22, 22, 4, 2, + 3, 3, 1, 6, 32, 29, 31, 30, 24, 23, 26, 25, 15, 20, 9, 19, 19, 21, 10, 18 } ; @@ -753,6 +753,11 @@ char *zconftext; #define START_STRSIZE 16 +static struct { + struct file *file; + int lineno; +} current_pos; + static char *text; static int text_size, text_asize; @@ -766,7 +771,7 @@ struct buffer *current_buf; static int last_ts, first_ts; static void zconf_endhelp(void); -static struct buffer *zconf_endfile(void); +static void zconf_endfile(void); void new_string(void) { @@ -993,17 +998,17 @@ do_action: /* This label is used only to access EOF actions. */ { /* beginning of action switch */ case 1: /* rule 1 can match eol */ -YY_RULE_SETUP -current_file->lineno++; - YY_BREAK case 2: +/* rule 2 can match eol */ YY_RULE_SETUP - +{ + current_file->lineno++; + return T_EOL; +} YY_BREAK case 3: -/* rule 3 can match eol */ YY_RULE_SETUP -current_file->lineno++; return T_EOL; + YY_BREAK case 4: YY_RULE_SETUP @@ -1023,8 +1028,10 @@ case 6: YY_RULE_SETUP { struct kconf_id *id = kconf_id_lookup(zconftext, zconfleng); + BEGIN(PARAM); + current_pos.file = current_file; + current_pos.lineno = current_file->lineno; if (id && id->flags & TF_COMMAND) { - BEGIN(PARAM); zconflval.id = id; return id->token; } @@ -1040,7 +1047,11 @@ YY_RULE_SETUP case 8: /* rule 8 can match eol */ YY_RULE_SETUP -current_file->lineno++; BEGIN(INITIAL); +{ + BEGIN(INITIAL); + current_file->lineno++; + return T_EOL; + } YY_BREAK case 9: @@ -1246,9 +1257,9 @@ case YY_STATE_EOF(HELP): case YY_STATE_EOF(INITIAL): case YY_STATE_EOF(COMMAND): { - if (current_buf) { + if (current_file) { zconf_endfile(); - return T_EOF; + return T_EOL; } fclose(zconfin); yyterminate(); @@ -1958,7 +1969,7 @@ YY_BUFFER_STATE zconf_scan_buffer (char * base, yy_size_t size ) /** Setup the input buffer state to scan a string. The next call to zconflex() will * scan from a @e copy of @a str. - * @param str a NUL-terminated string to scan + * @param yy_str a NUL-terminated string to scan * * @return the newly allocated buffer state object. * @note If you want to scan bytes that may contain NUL values, then use @@ -2276,7 +2287,7 @@ void zconf_nextfile(const char *name) current_file = file; } -static struct buffer *zconf_endfile(void) +static void zconf_endfile(void) { struct buffer *parent; @@ -2292,23 +2303,15 @@ static struct buffer *zconf_endfile(void) } free(current_buf); current_buf = parent; - - return parent; } int zconf_lineno(void) { - if (current_buf) - return current_file->lineno - 1; - else - return 0; + return current_pos.lineno; } char *zconf_curname(void) { - if (current_buf) - return current_file->name; - else - return ""; + return current_pos.file ? current_pos.file->name : ""; } -- cgit v1.1