2 * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
28 static char *dirname(const char *path)
30 const char *slash = strrchr(path, '/');
33 int len = slash - path;
34 char *dir = xmalloc(len + 1);
36 memcpy(dir, path, len);
43 FILE *depfile; /* = NULL */
44 struct srcfile_state *current_srcfile; /* = NULL */
46 /* Detect infinite include recursion. */
47 #define MAX_SRCFILE_DEPTH (100)
48 static int srcfile_depth; /* = 0 */
50 FILE *srcfile_relative_open(const char *fname, char **fullnamep)
55 if (streq(fname, "-")) {
57 fullname = xstrdup("<stdin>");
59 if (!current_srcfile || !current_srcfile->dir
61 fullname = xstrdup(fname);
63 fullname = join_path(current_srcfile->dir, fname);
65 f = fopen(fullname, "r");
67 die("Couldn't open \"%s\": %s\n", fname,
72 fprintf(depfile, " %s", fullname);
75 *fullnamep = fullname;
82 void srcfile_push(const char *fname)
84 struct srcfile_state *srcfile;
86 if (srcfile_depth++ >= MAX_SRCFILE_DEPTH)
87 die("Includes nested too deeply");
89 srcfile = xmalloc(sizeof(*srcfile));
91 srcfile->f = srcfile_relative_open(fname, &srcfile->name);
92 srcfile->dir = dirname(srcfile->name);
93 srcfile->prev = current_srcfile;
98 current_srcfile = srcfile;
101 int srcfile_pop(void)
103 struct srcfile_state *srcfile = current_srcfile;
107 current_srcfile = srcfile->prev;
109 if (fclose(srcfile->f))
110 die("Error closing \"%s\": %s\n", srcfile->name,
113 /* FIXME: We allow the srcfile_state structure to leak,
114 * because it could still be referenced from a location
115 * variable being carried through the parser somewhere. To
116 * fix this we could either allocate all the files from a
117 * table, or use a pool allocator. */
119 return current_srcfile ? 1 : 0;
123 * The empty source position.
126 struct srcpos srcpos_empty = {
136 void srcpos_update(struct srcpos *pos, const char *text, int len)
140 pos->file = current_srcfile;
142 pos->first_line = current_srcfile->lineno;
143 pos->first_column = current_srcfile->colno;
145 for (i = 0; i < len; i++)
146 if (text[i] == '\n') {
147 current_srcfile->lineno++;
148 current_srcfile->colno = 1;
149 } else if (text[i] == '\t') {
150 current_srcfile->colno =
151 ALIGN(current_srcfile->colno, TAB_SIZE);
153 current_srcfile->colno++;
156 pos->last_line = current_srcfile->lineno;
157 pos->last_column = current_srcfile->colno;
161 srcpos_copy(struct srcpos *pos)
163 struct srcpos *pos_new;
165 pos_new = xmalloc(sizeof(struct srcpos));
166 memcpy(pos_new, pos, sizeof(struct srcpos));
174 srcpos_dump(struct srcpos *pos)
176 printf("file : \"%s\"\n",
177 pos->file ? (char *) pos->file : "<no file>");
178 printf("first_line : %d\n", pos->first_line);
179 printf("first_column: %d\n", pos->first_column);
180 printf("last_line : %d\n", pos->last_line);
181 printf("last_column : %d\n", pos->last_column);
182 printf("file : %s\n", pos->file->name);
187 srcpos_string(struct srcpos *pos)
189 const char *fname = "<no-file>";
194 fname = pos->file->name;
197 if (pos->first_line != pos->last_line)
198 rc = asprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
199 pos->first_line, pos->first_column,
200 pos->last_line, pos->last_column);
201 else if (pos->first_column != pos->last_column)
202 rc = asprintf(&pos_str, "%s:%d.%d-%d", fname,
203 pos->first_line, pos->first_column,
206 rc = asprintf(&pos_str, "%s:%d.%d", fname,
207 pos->first_line, pos->first_column);
210 die("Couldn't allocate in srcpos string");
216 srcpos_verror(struct srcpos *pos, char const *fmt, va_list va)
220 srcstr = srcpos_string(pos);
222 fprintf(stdout, "Error: %s ", srcstr);
223 vfprintf(stdout, fmt, va);
224 fprintf(stdout, "\n");
228 srcpos_error(struct srcpos *pos, char const *fmt, ...)
233 srcpos_verror(pos, fmt, va);
239 srcpos_warn(struct srcpos *pos, char const *fmt, ...)
245 srcstr = srcpos_string(pos);
247 fprintf(stderr, "Warning: %s ", srcstr);
248 vfprintf(stderr, fmt, va);
249 fprintf(stderr, "\n");