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
13struct srcfile_state {
14	FILE *f;
15	char *name;
16	char *dir;
17	int lineno, colno;
18	struct srcfile_state *prev;
19};
20
21extern FILE *depfile; /* = NULL */
22extern 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 */
43FILE *srcfile_relative_open(const char *fname, char **fullnamep);
44
45void srcfile_push(const char *fname);
46bool 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 */
55void srcfile_add_search_path(const char *dirname);
56
57struct 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
87extern void srcpos_update(struct srcpos *pos, const char *text, int len);
88extern struct srcpos *srcpos_copy(struct srcpos *pos);
89extern struct srcpos *srcpos_extend(struct srcpos *new_srcpos,
90				    struct srcpos *old_srcpos);
91extern char *srcpos_string(struct srcpos *pos);
92extern char *srcpos_string_first(struct srcpos *pos, int level);
93extern char *srcpos_string_last(struct srcpos *pos, int level);
94
95
96extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix,
97					const char *fmt, va_list va);
98extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix,
99				      const char *fmt, ...);
100
101extern void srcpos_set_line(char *f, int l);
102
103#endif /* SRCPOS_H */
104