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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 
25 struct srcfile_state {
26 	FILE *f;
27 	char *name;
28 	char *dir;
29 	int lineno, colno;
30 	struct srcfile_state *prev;
31 };
32 
33 extern FILE *depfile; /* = NULL */
34 extern struct srcfile_state *current_srcfile; /* = NULL */
35 
36 /**
37  * Open a source file.
38  *
39  * If the source file is a relative pathname, then it is searched for in the
40  * current directory (the directory of the last source file read) and after
41  * that in the search path.
42  *
43  * We work through the search path in order from the first path specified to
44  * the last.
45  *
46  * If the file is not found, then this function does not return, but calls
47  * die().
48  *
49  * @param fname		Filename to search
50  * @param fullnamep	If non-NULL, it is set to the allocated filename of the
51  *			file that was opened. The caller is then responsible
52  *			for freeing the pointer.
53  * @return pointer to opened FILE
54  */
55 FILE *srcfile_relative_open(const char *fname, char **fullnamep);
56 
57 void srcfile_push(const char *fname);
58 int srcfile_pop(void);
59 
60 /**
61  * Add a new directory to the search path for input files
62  *
63  * The new path is added at the end of the list.
64  *
65  * @param dirname	Directory to add
66  */
67 void srcfile_add_search_path(const char *dirname);
68 
69 struct srcpos {
70     int first_line;
71     int first_column;
72     int last_line;
73     int last_column;
74     struct srcfile_state *file;
75 };
76 
77 #define YYLTYPE struct srcpos
78 
79 #define YYLLOC_DEFAULT(Current, Rhs, N)						\
80 	do {									\
81 		if (N) {							\
82 			(Current).first_line = YYRHSLOC(Rhs, 1).first_line;	\
83 			(Current).first_column = YYRHSLOC(Rhs, 1).first_column;	\
84 			(Current).last_line = YYRHSLOC(Rhs, N).last_line;	\
85 			(Current).last_column  = YYRHSLOC (Rhs, N).last_column;	\
86 			(Current).file = YYRHSLOC(Rhs, N).file;			\
87 		} else {							\
88 			(Current).first_line = (Current).last_line =		\
89 				YYRHSLOC(Rhs, 0).last_line;			\
90 			(Current).first_column = (Current).last_column =	\
91 				YYRHSLOC(Rhs, 0).last_column;			\
92 			(Current).file = YYRHSLOC (Rhs, 0).file;		\
93 		}								\
94 	} while (0)
95 
96 
97 /*
98  * Fictional source position used for IR nodes that are
99  * created without otherwise knowing a true source position.
100  * For example,constant definitions from the command line.
101  */
102 extern struct srcpos srcpos_empty;
103 
104 extern void srcpos_update(struct srcpos *pos, const char *text, int len);
105 extern struct srcpos *srcpos_copy(struct srcpos *pos);
106 extern char *srcpos_string(struct srcpos *pos);
107 extern void srcpos_dump(struct srcpos *pos);
108 
109 extern void srcpos_verror(struct srcpos *pos, char const *, va_list va)
110      __attribute__((format(printf, 2, 0)));
111 extern void srcpos_error(struct srcpos *pos, char const *, ...)
112      __attribute__((format(printf, 2, 3)));
113 extern void srcpos_warn(struct srcpos *pos, char const *, ...)
114      __attribute__((format(printf, 2, 3)));
115 
116 extern void srcpos_set_line(char *f, int l);
117 
118 #endif /* _SRCPOS_H_ */
119