srcpos.h revision 238742 
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
25struct srcfile_state {
26	FILE *f;
27	char *name;
28	char *dir;
29	int lineno, colno;
30	struct srcfile_state *prev;
31};
32
33extern FILE *depfile; /* = NULL */
34extern 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 */
55FILE *srcfile_relative_open(const char *fname, char **fullnamep);
56
57void srcfile_push(const char *fname);
58int 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 */
67void srcfile_add_search_path(const char *dirname);
68
69struct 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 */
102extern struct srcpos srcpos_empty;
103
104extern void srcpos_update(struct srcpos *pos, const char *text, int len);
105extern struct srcpos *srcpos_copy(struct srcpos *pos);
106extern char *srcpos_string(struct srcpos *pos);
107extern void srcpos_dump(struct srcpos *pos);
108
109extern void srcpos_verror(struct srcpos *pos, char const *, va_list va)
110     __attribute__((format(printf, 2, 0)));
111extern void srcpos_error(struct srcpos *pos, char const *, ...)
112     __attribute__((format(printf, 2, 3)));
113extern void srcpos_warn(struct srcpos *pos, char const *, ...)
114     __attribute__((format(printf, 2, 3)));
115
116#endif /* _SRCPOS_H_ */
117