1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
4 */
5
6 #ifndef SRCPOS_H
7 #define SRCPOS_H
8
9 #include <stdio.h>
10 #include <stdbool.h>
11 #include "util.h"
12
13 struct srcfile_state {
14 FILE *f;
15 char *name;
16 char *dir;
17 int lineno, colno;
18 struct srcfile_state *prev;
19 };
20
21 extern FILE *depfile; /* = NULL */
22 extern struct srcfile_state *current_srcfile; /* = NULL */
23
24 /**
25 * Open a source file.
26 *
27 * If the source file is a relative pathname, then it is searched for in the
28 * current directory (the directory of the last source file read) and after
29 * that in the search path.
30 *
31 * We work through the search path in order from the first path specified to
32 * the last.
33 *
34 * If the file is not found, then this function does not return, but calls
35 * die().
36 *
37 * @param fname Filename to search
38 * @param fullnamep If non-NULL, it is set to the allocated filename of the
39 * file that was opened. The caller is then responsible
40 * for freeing the pointer.
41 * @return pointer to opened FILE
42 */
43 FILE *srcfile_relative_open(const char *fname, char **fullnamep);
44
45 void srcfile_push(const char *fname);
46 bool srcfile_pop(void);
47
48 /**
49 * Add a new directory to the search path for input files
50 *
51 * The new path is added at the end of the list.
52 *
53 * @param dirname Directory to add
54 */
55 void srcfile_add_search_path(const char *dirname);
56
57 struct srcpos {
58 int first_line;
59 int first_column;
60 int last_line;
61 int last_column;
62 struct srcfile_state *file;
63 struct srcpos *next;
64 };
65
66 #define YYLTYPE struct srcpos
67
68 #define YYLLOC_DEFAULT(Current, Rhs, N) \
69 do { \
70 if (N) { \
71 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
72 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
73 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
74 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
75 (Current).file = YYRHSLOC(Rhs, N).file; \
76 } else { \
77 (Current).first_line = (Current).last_line = \
78 YYRHSLOC(Rhs, 0).last_line; \
79 (Current).first_column = (Current).last_column = \
80 YYRHSLOC(Rhs, 0).last_column; \
81 (Current).file = YYRHSLOC (Rhs, 0).file; \
82 } \
83 (Current).next = NULL; \
84 } while (0)
85
86
87 extern void srcpos_update(struct srcpos *pos, const char *text, int len);
88 extern struct srcpos *srcpos_copy(struct srcpos *pos);
89 extern struct srcpos *srcpos_extend(struct srcpos *new_srcpos,
90 struct srcpos *old_srcpos);
91 extern char *srcpos_string(struct srcpos *pos);
92 extern char *srcpos_string_first(struct srcpos *pos, int level);
93 extern char *srcpos_string_last(struct srcpos *pos, int level);
94
95
96 extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix,
97 const char *fmt, va_list va);
98 extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix,
99 const char *fmt, ...);
100
101 extern void srcpos_set_line(char *f, int l);
102
103 #endif /* SRCPOS_H */