@ -17,18 +17,40 @@
@@ -17,18 +17,40 @@
* USA
*/
#define _GNU_SOURCE
#include <stdio.h>
#include "dtc.h"
#include "srcpos.h"
/*
* Like yylineno, this is the current open file pos.
*/
struct dtc_file *srcpos_file;
static int dtc_open_one(struct dtc_file *file,
const char *search,
const char *fname)
/*
* The empty source position.
*/
struct dtc_file dtc_empty_file = {
.dir = NULL,
.name = "<no file>",
.file = NULL
};
srcpos srcpos_empty = {
.first_line = 0,
.first_column = 0,
.last_line = 0,
.last_column = 0,
.file = &dtc_empty_file
};
static int
dtc_open_one(struct dtc_file *file, const char *search, const char *fname)
{
char *fullname;
@ -53,8 +75,8 @@ static int dtc_open_one(struct dtc_file *file,
@@ -53,8 +75,8 @@ static int dtc_open_one(struct dtc_file *file,
}
struct dtc_file *dtc_open_file(const char *fname,
const struct search_path *search)
struct dtc_file *
dtc_open_file(const char *fname, const struct search_path *search)
{
static const struct search_path default_search = { NULL, NULL, NULL };
@ -106,11 +128,113 @@ fail:
@@ -106,11 +128,113 @@ fail:
die("Couldn't open \"%s\": %s\n", fname, strerror(errno));
}
void dtc_close_file(struct dtc_file *file)
void
dtc_close_file(struct dtc_file *file)
{
if (fclose(file->file))
die("Error closing \"%s\": %s\n", file->name, strerror(errno));
}
srcpos *
srcpos_copy(srcpos *pos)
{
srcpos *pos_new;
pos_new = xmalloc(sizeof(srcpos));
memcpy(pos_new, pos, sizeof(srcpos));
return pos_new;
}
void
srcpos_dump(srcpos *pos)
{
printf("file : \"%s\"\n",
pos->file ? (char *) pos->file : "<no file>");
printf("first_line : %d\n", pos->first_line);
printf("first_column: %d\n", pos->first_column);
printf("last_line : %d\n", pos->last_line);
printf("last_column : %d\n", pos->last_column);
printf("file : %s\n", pos->file->name);
}
char *
srcpos_string(srcpos *pos)
{
const char *fname;
char col_buf[100];
char *pos_str;
if (!pos) {
fname = "<no-file>";
} else if (pos->file->name) {
fname = pos->file->name;
if (strcmp(fname, "-") == 0)
fname = "stdin";
} else {
fname = "<no-file>";
}
if (pos->first_line == pos->last_line) {
if (pos->first_column == pos->last_column) {
snprintf(col_buf, sizeof(col_buf),
"%d:%d",
pos->first_line, pos->first_column);
} else {
snprintf(col_buf, sizeof(col_buf),
"%d:%d-%d",
pos->first_line,
pos->first_column, pos->last_column);
}
} else {
snprintf(col_buf, sizeof(col_buf),
"%d:%d - %d:%d",
pos->first_line, pos->first_column,
pos->last_line, pos->last_column);
}
if (asprintf(&pos_str, "%s %s", fname, col_buf) == -1)
return "<unknown source position?";
return pos_str;
}
void
srcpos_error(srcpos *pos, char const *fmt, ...)
{
const char *srcstr;
va_list va;
va_start(va, fmt);
srcstr = srcpos_string(pos);
fprintf(stderr, "Error: %s ", srcstr);
vfprintf(stderr, fmt, va);
fprintf(stderr, "\n");
va_end(va);
}
void
srcpos_warn(srcpos *pos, char const *fmt, ...)
{
const char *srcstr;
va_list va;
va_start(va, fmt);
srcstr = srcpos_string(pos);
fprintf(stderr, "Warning: %s ", srcstr);
vfprintf(stderr, fmt, va);
fprintf(stderr, "\n");
free(file->dir);
free(file);
va_end(va);
}