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libtcc: new function tcc_open_bf to create BufferedFile

Browse Source 
Use it in:
- tcc_open
- tcc_compile_string
- tcc_define_symbol
- tcc_assemble_inline
This commit is contained in:
grischka 2010-11-25 13:29:15 +01:00
parent f1c9f649da
commit e97bf88bad
4 changed files with 81 additions and 108 deletions
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129
libtcc.c
View File

@ -635,11 +635,41 @@ PUB_FUNC void warning(const char *fmt, ...)
/********************************************************/
/* I/O layer */
ST_FUNC BufferedFile *tcc_open(TCCState *s1, const char *filename)
ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
{
BufferedFile *bf;
int buflen = initlen ? initlen : IO_BUF_SIZE;
bf = tcc_malloc(sizeof(BufferedFile) + buflen);
bf->buf_ptr = bf->buffer;
bf->buf_end = bf->buffer + initlen;
bf->buf_end[0] = CH_EOB; /* put eob symbol */
pstrcpy(bf->filename, sizeof(bf->filename), filename);
#ifdef _WIN32
normalize_slashes(bf->filename);
#endif
bf->line_num = 1;
bf->ifndef_macro = 0;
bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
bf->fd = -1;
bf->prev = file;
file = bf;
}
ST_FUNC void tcc_close(void)
{
BufferedFile *bf = file;
if (bf->fd > 0) {
close(bf->fd);
total_lines += bf->line_num;
}
file = bf->prev;
tcc_free(bf);
}
ST_FUNC int tcc_open(TCCState *s1, const char *filename)
{
int fd;
BufferedFile *bf;
if (strcmp(filename, "-") == 0)
fd = 0, filename = "stdin";
else
@ -648,28 +678,11 @@ ST_FUNC BufferedFile *tcc_open(TCCState *s1, const char *filename)
printf("%s %*s%s\n", fd < 0 ? "nf":"->",
(int)(s1->include_stack_ptr - s1->include_stack), "", filename);
if (fd < 0)
return NULL;
bf = tcc_malloc(sizeof(BufferedFile));
bf->fd = fd;
bf->buf_ptr = bf->buffer;
bf->buf_end = bf->buffer;
bf->buffer[0] = CH_EOB; /* put eob symbol */
pstrcpy(bf->filename, sizeof(bf->filename), filename);
#ifdef _WIN32
normalize_slashes(bf->filename);
#endif
bf->line_num = 1;
bf->ifndef_macro = 0;
bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
// printf("opening '%s'\n", filename);
return bf;
}
return -1;
ST_FUNC void tcc_close(BufferedFile *bf)
{
total_lines += bf->line_num;
close(bf->fd);
tcc_free(bf);
tcc_open_bf(s1, filename, 0);
file->fd = fd;
return fd;
}
/* compile the C file opened in 'file'. Return non zero if errors. */
@ -780,60 +793,38 @@ static int tcc_compile(TCCState *s1)
LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
{
BufferedFile bf1, *bf = &bf1;
int ret, len;
char *buf;
/* init file structure */
bf->fd = -1;
/* XXX: avoid copying */
int len, ret;
len = strlen(str);
buf = tcc_malloc(len + 1);
if (!buf)
return -1;
memcpy(buf, str, len);
buf[len] = CH_EOB;
bf->buf_ptr = buf;
bf->buf_end = buf + len;
pstrcpy(bf->filename, sizeof(bf->filename), "<string>");
bf->line_num = 1;
file = bf;
ret = tcc_compile(s);
file = NULL;
tcc_free(buf);
/* currently, no need to close */
tcc_open_bf(s, "<string>", len);
memcpy(file->buffer, str, len);
ret = tcc_compile(s);
tcc_close();
return ret;
}
/* define a preprocessor symbol. A value can also be provided with the '=' operator */
LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
{
BufferedFile bf1, *bf = &bf1;
pstrcpy(bf->buffer, IO_BUF_SIZE, sym);
pstrcat(bf->buffer, IO_BUF_SIZE, " ");
int len1, len2;
/* default value */
if (!value)
if (!value)
value = "1";
pstrcat(bf->buffer, IO_BUF_SIZE, value);
len1 = strlen(sym);
len2 = strlen(value);
/* init file structure */
bf->fd = -1;
bf->buf_ptr = bf->buffer;
bf->buf_end = bf->buffer + strlen(bf->buffer);
*bf->buf_end = CH_EOB;
bf->filename[0] = '\0';
bf->line_num = 1;
file = bf;
s1->include_stack_ptr = s1->include_stack;
tcc_open_bf(s1, "<define>", len1 + len2 + 1);
memcpy(file->buffer, sym, len1);
file->buffer[len1] = ' ';
memcpy(file->buffer + len1 + 1, value, len2);
/* parse with define parser */
ch = file->buf_ptr[0];
next_nomacro();
parse_define();
file = NULL;
tcc_close();
}
/* undefine a preprocessor symbol */
@ -1082,9 +1073,6 @@ ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
const char *ext;
ElfW(Ehdr) ehdr;
int fd, ret, size;
BufferedFile *saved_file;
ret = -1;
/* find source file type with extension */
ext = tcc_fileextension(filename);
@ -1092,12 +1080,11 @@ ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
ext++;
/* open the file */
saved_file = file;
file = tcc_open(s1, filename);
if (!file) {
ret = tcc_open(s1, filename);
if (ret < 0) {
if (flags & AFF_PRINT_ERROR)
error_noabort("file '%s' not found", filename);
goto the_end;
return ret;
}
/* update target deps */
@ -1192,9 +1179,7 @@ ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
error_noabort("unrecognized file type");
the_end:
if (file)
tcc_close(file);
file = saved_file;
tcc_close();
return ret;
}

7
tcc.h
View File

@ -334,6 +334,7 @@ typedef struct BufferedFile {
uint8_t *buf_ptr;
uint8_t *buf_end;
int fd;
struct BufferedFile *prev;
int line_num; /* current line number - here to simplify code */
int ifndef_macro; /* #ifndef macro / #endif search */
int ifndef_macro_saved; /* saved ifndef_macro */
@ -946,8 +947,10 @@ ST_INLN Sym *struct_find(int v);
ST_INLN Sym *sym_find(int v);
ST_FUNC Sym *global_identifier_push(int v, int t, int c);
ST_FUNC BufferedFile *tcc_open(TCCState *s1, const char *filename);
ST_FUNC void tcc_close(BufferedFile *bf);
ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen);
ST_FUNC int tcc_open(TCCState *s1, const char *filename);
ST_FUNC void tcc_close(void);
ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags);
ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags);
PUB_FUNC int tcc_set_flag(TCCState *s, const char *flag_name, int value);

22
tccasm.c
View File

@ -825,32 +825,22 @@ ST_FUNC int tcc_assemble(TCCState *s1, int do_preprocess)
end */
static void tcc_assemble_inline(TCCState *s1, char *str, int len)
{
BufferedFile *bf, *saved_file;
int saved_parse_flags;
const int *saved_macro_ptr;
bf = tcc_malloc(sizeof(BufferedFile));
memset(bf, 0, sizeof(BufferedFile));
bf->fd = -1;
bf->buf_ptr = str;
bf->buf_end = str + len;
str[len] = CH_EOB;
/* same name as current file so that errors are correctly
reported */
pstrcpy(bf->filename, sizeof(bf->filename), file->filename);
bf->line_num = file->line_num;
saved_file = file;
file = bf;
saved_parse_flags = parse_flags;
saved_macro_ptr = macro_ptr;
tcc_open_bf(s1, file->filename, len);
file->line_num = file->prev->line_num;
memcpy(file->buffer, str, len);
macro_ptr = NULL;
tcc_assemble_internal(s1, 0);
tcc_close();
parse_flags = saved_parse_flags;
macro_ptr = saved_macro_ptr;
file = saved_file;
tcc_free(bf);
}
/* find a constraint by its number or id (gcc 3 extended

31
tccpp.c
View File

@ -1433,10 +1433,9 @@ ST_FUNC void preprocess(int is_bof)
n = s1->nb_include_paths + s1->nb_sysinclude_paths;
for (i = -2; i < n; ++i) {
char buf1[sizeof file->filename];
BufferedFile *f;
CachedInclude *e;
const char *path;
int size;
int size, fd;
if (i == -2) {
/* check absolute include path */
@ -1471,21 +1470,21 @@ ST_FUNC void preprocess(int is_bof)
#ifdef INC_DEBUG
printf("%s: skipping %s\n", file->filename, buf);
#endif
f = NULL;
} else {
f = tcc_open(s1, buf1);
if (!f)
fd = 0;
} else {
fd = tcc_open(s1, buf1);
if (fd < 0)
continue;
}
if (tok == TOK_INCLUDE_NEXT) {
tok = TOK_INCLUDE;
if (f)
tcc_close(f);
if (fd)
tcc_close();
continue;
}
if (!f)
if (0 == fd)
goto include_done;
#ifdef INC_DEBUG
@ -1494,17 +1493,14 @@ ST_FUNC void preprocess(int is_bof)
/* update target deps */
dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
tcc_strdup(buf1));
/* XXX: fix current line init */
/* push current file in stack */
*s1->include_stack_ptr++ = file;
f->inc_type = c;
pstrcpy(f->inc_filename, sizeof(f->inc_filename), buf1);
file = f;
*s1->include_stack_ptr++ = file->prev;
file->inc_type = c;
pstrcpy(file->inc_filename, sizeof(file->inc_filename), buf1);
/* add include file debug info */
if (s1->do_debug) {
if (s1->do_debug)
put_stabs(file->filename, N_BINCL, 0, 0, 0);
}
tok_flags |= TOK_FLAG_BOF | TOK_FLAG_BOL;
ch = file->buf_ptr[0];
goto the_end;
@ -2134,9 +2130,8 @@ static inline void next_nomacro1(void)
put_stabd(N_EINCL, 0, 0);
}
/* pop include stack */
tcc_close(file);
tcc_close();
s1->include_stack_ptr--;
file = *s1->include_stack_ptr;
p = file->buf_ptr;
goto redo_no_start;
}