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 #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 */