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TOMOYO Linux Cross Reference
Linux/scripts/dtc/srcpos.h

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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 #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 

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