1/*
2 * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
3 *
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.
8 *
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.
13 *
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
17 *                                                                   USA
18 */
19
20#ifndef SRCPOS_H
21#define SRCPOS_H
22
23#include <stdio.h>
24#include <stdbool.h>
25#include "util.h"
26
27struct srcfile_state {
28	FILE *f;
29	char *name;
30	char *dir;
31	int lineno, colno;
32	struct srcfile_state *prev;
33};
34
35extern FILE *depfile; /* = NULL */
36extern struct srcfile_state *current_srcfile; /* = NULL */
37
38/**
39 * Open a source file.
40 *
41 * If the source file is a relative pathname, then it is searched for in the
42 * current directory (the directory of the last source file read) and after
43 * that in the search path.
44 *
45 * We work through the search path in order from the first path specified to
46 * the last.
47 *
48 * If the file is not found, then this function does not return, but calls
49 * die().
50 *
51 * @param fname		Filename to search
52 * @param fullnamep	If non-NULL, it is set to the allocated filename of the
53 *			file that was opened. The caller is then responsible
54 *			for freeing the pointer.
55 * Return: pointer to opened FILE
56 */
57FILE *srcfile_relative_open(const char *fname, char **fullnamep);
58
59void srcfile_push(const char *fname);
60bool srcfile_pop(void);
61
62/**
63 * Add a new directory to the search path for input files
64 *
65 * The new path is added at the end of the list.
66 *
67 * @param dirname	Directory to add
68 */
69void srcfile_add_search_path(const char *dirname);
70
71struct srcpos {
72    int first_line;
73    int first_column;
74    int last_line;
75    int last_column;
76    struct srcfile_state *file;
77};
78
79#define YYLTYPE struct srcpos
80
81#define YYLLOC_DEFAULT(Current, Rhs, N)						\
82	do {									\
83		if (N) {							\
84			(Current).first_line = YYRHSLOC(Rhs, 1).first_line;	\
85			(Current).first_column = YYRHSLOC(Rhs, 1).first_column;	\
86			(Current).last_line = YYRHSLOC(Rhs, N).last_line;	\
87			(Current).last_column  = YYRHSLOC (Rhs, N).last_column;	\
88			(Current).file = YYRHSLOC(Rhs, N).file;			\
89		} else {							\
90			(Current).first_line = (Current).last_line =		\
91				YYRHSLOC(Rhs, 0).last_line;			\
92			(Current).first_column = (Current).last_column =	\
93				YYRHSLOC(Rhs, 0).last_column;			\
94			(Current).file = YYRHSLOC (Rhs, 0).file;		\
95		}								\
96	} while (0)
97
98
99/*
100 * Fictional source position used for IR nodes that are
101 * created without otherwise knowing a true source position.
102 * For example,constant definitions from the command line.
103 */
104extern struct srcpos srcpos_empty;
105
106extern void srcpos_update(struct srcpos *pos, const char *text, int len);
107extern struct srcpos *srcpos_copy(struct srcpos *pos);
108extern char *srcpos_string(struct srcpos *pos);
109
110extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix,
111					const char *fmt, va_list va);
112extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix,
113				      const char *fmt, ...);
114
115extern void srcpos_set_line(char *f, int l);
116
117#endif /* SRCPOS_H */
118