srcpos.h revision 261215 
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
26struct srcfile_state {
27	FILE *f;
28	char *name;
29	char *dir;
30	int lineno, colno;
31	struct srcfile_state *prev;
32};
33
34extern FILE *depfile; /* = NULL */
35extern struct srcfile_state *current_srcfile; /* = NULL */
36
37/**
38 * Open a source file.
39 *
40 * If the source file is a relative pathname, then it is searched for in the
41 * current directory (the directory of the last source file read) and after
42 * that in the search path.
43 *
44 * We work through the search path in order from the first path specified to
45 * the last.
46 *
47 * If the file is not found, then this function does not return, but calls
48 * die().
49 *
50 * @param fname		Filename to search
51 * @param fullnamep	If non-NULL, it is set to the allocated filename of the
52 *			file that was opened. The caller is then responsible
53 *			for freeing the pointer.
54 * @return pointer to opened FILE
55 */
56FILE *srcfile_relative_open(const char *fname, char **fullnamep);
57
58void srcfile_push(const char *fname);
59bool srcfile_pop(void);
60
61/**
62 * Add a new directory to the search path for input files
63 *
64 * The new path is added at the end of the list.
65 *
66 * @param dirname	Directory to add
67 */
68void srcfile_add_search_path(const char *dirname);
69
70struct srcpos {
71    int first_line;
72    int first_column;
73    int last_line;
74    int last_column;
75    struct srcfile_state *file;
76};
77
78#define YYLTYPE struct srcpos
79
80#define YYLLOC_DEFAULT(Current, Rhs, N)						\
81	do {									\
82		if (N) {							\
83			(Current).first_line = YYRHSLOC(Rhs, 1).first_line;	\
84			(Current).first_column = YYRHSLOC(Rhs, 1).first_column;	\
85			(Current).last_line = YYRHSLOC(Rhs, N).last_line;	\
86			(Current).last_column  = YYRHSLOC (Rhs, N).last_column;	\
87			(Current).file = YYRHSLOC(Rhs, N).file;			\
88		} else {							\
89			(Current).first_line = (Current).last_line =		\
90				YYRHSLOC(Rhs, 0).last_line;			\
91			(Current).first_column = (Current).last_column =	\
92				YYRHSLOC(Rhs, 0).last_column;			\
93			(Current).file = YYRHSLOC (Rhs, 0).file;		\
94		}								\
95	} while (0)
96
97
98/*
99 * Fictional source position used for IR nodes that are
100 * created without otherwise knowing a true source position.
101 * For example,constant definitions from the command line.
102 */
103extern struct srcpos srcpos_empty;
104
105extern void srcpos_update(struct srcpos *pos, const char *text, int len);
106extern struct srcpos *srcpos_copy(struct srcpos *pos);
107extern char *srcpos_string(struct srcpos *pos);
108extern void srcpos_dump(struct srcpos *pos);
109
110extern void srcpos_verror(struct srcpos *pos, const char *prefix,
111			  const char *fmt, va_list va)
112	__attribute__((format(printf, 3, 0)));
113extern void srcpos_error(struct srcpos *pos, const char *prefix,
114			 const char *fmt, ...)
115	__attribute__((format(printf, 3, 4)));
116
117extern void srcpos_set_line(char *f, int l);
118
119#endif /* _SRCPOS_H_ */
120