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 
27 struct srcfile_state {
28 	FILE *f;
29 	char *name;
30 	char *dir;
31 	int lineno, colno;
32 	struct srcfile_state *prev;
33 };
34 
35 extern FILE *depfile; /* = NULL */
36 extern 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  */
57 FILE *srcfile_relative_open(const char *fname, char **fullnamep);
58 
59 void srcfile_push(const char *fname);
60 bool 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  */
69 void srcfile_add_search_path(const char *dirname);
70 
71 struct 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  */
104 extern struct srcpos srcpos_empty;
105 
106 extern void srcpos_update(struct srcpos *pos, const char *text, int len);
107 extern struct srcpos *srcpos_copy(struct srcpos *pos);
108 extern char *srcpos_string(struct srcpos *pos);
109 
110 extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix,
111 					const char *fmt, va_list va);
112 extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix,
113 				      const char *fmt, ...);
114 
115 extern void srcpos_set_line(char *f, int l);
116 
117 #endif /* SRCPOS_H */
118