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