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tccpp: Implement __BASE_FILE__ macro

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Like __FILE__ but always refers to the command line file name also
from inside headers.
This commit is contained in:
Michael Matz 2016-07-13 15:37:36 +02:00
parent 8a1a2a6033
commit b7e0b693a6
3 changed files with 22 additions and 0 deletions
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6
tccpp.c
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@ -3465,6 +3465,7 @@ ST_INLN void unget_tok(int last_tok)
ST_FUNC void preprocess_start(TCCState *s1)
{
char *buf;
s1->include_stack_ptr = s1->include_stack;
/* XXX: move that before to avoid having to initialize
file->ifdef_stack_ptr ? */
@ -3480,6 +3481,11 @@ ST_FUNC void preprocess_start(TCCState *s1)
s1->dollars_in_identifiers ? IS_ID : 0;
isidnum_table['.' - CH_EOF] =
(parse_flags & PARSE_FLAG_ASM_FILE) ? IS_ID : 0;
buf = tcc_malloc(3 + strlen(file->filename));
sprintf(buf, "\"%s\"", file->filename);
tcc_undefine_symbol(s1, "__BASE_FILE__");
tcc_define_symbol(s1, "__BASE_FILE__", buf);
tcc_free(buf);
if (s1->nb_cmd_include_files) {
CString cstr;
int i;

7
tests/tcctest.c
View file

@ -59,6 +59,8 @@
#include "tcclib.h"
#include "tcctest.h"
void intdiv_test();
void string_test();
void expr_test();
@ -389,6 +391,11 @@ comment
/* And again when the name and parenthes are separated by a
comment. */
TEST2 /* the comment */ ();
printf("%s\n", get_basefile_from_header());
printf("%s\n", __BASE_FILE__);
printf("%s\n", get_file_from_header());
printf("%s\n", __FILE__);
}

9
tests/tcctest.h Normal file
View file

@ -0,0 +1,9 @@
static inline const char *get_basefile_from_header(void)
{
return __BASE_FILE__;
}
static inline const char *get_file_from_header(void)
{
return __FILE__;
}