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tcc_preprocess: add gcc-style include-depth flags 

# 1 "main.c"
    # 1 "include/stdio.h" 1
    # 123 "include/stdio.h" 3
    # 10 "main.c" 2

flags: 1: level++; 3: same-level  2: level--
tcc-xref
grischka 2009-06-17 02:10:42 +02:00
parent 956b4beec1
commit e4ae77c7bb
1 changed files with 22 additions and 7 deletions
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29
tccpp.c
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@ -2895,8 +2895,9 @@ void preprocess_new()
static int tcc_preprocess(TCCState *s1)
{
Sym *define_start;
BufferedFile *file_ref;
int token_seen, line_ref;
BufferedFile *file_ref, **iptr, **iptr_new;
int token_seen, line_ref, d;
const char *s;
preprocess_init(s1);
define_start = define_stack;
@ -2908,24 +2909,38 @@ static int tcc_preprocess(TCCState *s1)
line_ref = 0;
file_ref = NULL;
iptr = s1->include_stack_ptr;
for (;;) {
next();
if (tok == TOK_EOF) {
break;
} else if (file != file_ref) {
goto print_line;
} else if (tok == TOK_LINEFEED) {
if (!token_seen)
continue;
++line_ref;
token_seen = 0;
} else if (!token_seen) {
int d = file->line_num - line_ref;
if (file != file_ref || d < 0 || d >= 8)
fprintf(s1->outfile, "# %d \"%s\"\n", file->line_num, file->filename);
else
d = file->line_num - line_ref;
if (file != file_ref || d < 0 || d >= 8) {
print_line:
iptr_new = s1->include_stack_ptr;
s = iptr_new > iptr ? " 1"
: iptr_new < iptr ? " 2"
: iptr_new > s1->include_stack ? " 3"
: ""
;
iptr = iptr_new;
fprintf(s1->outfile, "# %d \"%s\"%s\n", file->line_num, file->filename, s);
} else {
while (d)
fputs("\n", s1->outfile), --d;
}
line_ref = (file_ref = file)->line_num;
token_seen = 1;
token_seen = tok != TOK_LINEFEED;
if (!token_seen)
continue;
}
fputs(get_tok_str(tok, &tokc), s1->outfile);
}