scripts/dtc/srcpos.h

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