scripts/dtc/srcpos.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
   4  */
   5
   6 #ifndef SRCPOS_H
   7 #define SRCPOS_H
   8
   9 #include <stdio.h>
  10 #include <stdbool.h>
  11 #include "util.h"
  12
  13 struct srcfile_state {
  14         FILE *f;
  15         char *name;
  16         char *dir;
  17         int lineno, colno;
  18         struct srcfile_state *prev;
  19 };
  20
  21 extern FILE *depfile; /* = NULL */
  22 extern struct srcfile_state *current_srcfile; /* = NULL */
  23
  24 /**
  25  * Open a source file.
  26  *
  27  * If the source file is a relative pathname, then it is searched for in the
  28  * current directory (the directory of the last source file read) and after
  29  * that in the search path.
  30  *
  31  * We work through the search path in order from the first path specified to
  32  * the last.
  33  *
  34  * If the file is not found, then this function does not return, but calls
  35  * die().
  36  *
  37  * @param fname         Filename to search
  38  * @param fullnamep     If non-NULL, it is set to the allocated filename of the
  39  *                      file that was opened. The caller is then responsible
  40  *                      for freeing the pointer.
  41  * @return pointer to opened FILE
  42  */
  43 FILE *srcfile_relative_open(const char *fname, char **fullnamep);
  44
  45 void srcfile_push(const char *fname);
  46 bool srcfile_pop(void);
  47
  48 /**
  49  * Add a new directory to the search path for input files
  50  *
  51  * The new path is added at the end of the list.
  52  *
  53  * @param dirname       Directory to add
  54  */
  55 void srcfile_add_search_path(const char *dirname);
  56
  57 struct srcpos {
  58     int first_line;
  59     int first_column;
  60     int last_line;
  61     int last_column;
  62     struct srcfile_state *file;
  63     struct srcpos *next;
  64 };
  65
  66 #define YYLTYPE struct srcpos
  67
  68 #define YYLLOC_DEFAULT(Current, Rhs, N)                                         \
  69         do {                                                                    \
  70                 if (N) {                                                        \
  71                         (Current).first_line = YYRHSLOC(Rhs, 1).first_line;     \
  72                         (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
  73                         (Current).last_line = YYRHSLOC(Rhs, N).last_line;       \
  74                         (Current).last_column  = YYRHSLOC (Rhs, N).last_column; \
  75                         (Current).file = YYRHSLOC(Rhs, N).file;                 \
  76                 } else {                                                        \
  77                         (Current).first_line = (Current).last_line =            \
  78                                 YYRHSLOC(Rhs, 0).last_line;                     \
  79                         (Current).first_column = (Current).last_column =        \
  80                                 YYRHSLOC(Rhs, 0).last_column;                   \
  81                         (Current).file = YYRHSLOC (Rhs, 0).file;                \
  82                 }                                                               \
  83                 (Current).next = NULL;                                          \
  84         } while (0)
  85
  86
  87 extern void srcpos_update(struct srcpos *pos, const char *text, int len);
  88 extern struct srcpos *srcpos_copy(struct srcpos *pos);
  89 extern struct srcpos *srcpos_extend(struct srcpos *new_srcpos,
  90                                     struct srcpos *old_srcpos);
  91 extern char *srcpos_string(struct srcpos *pos);
  92 extern char *srcpos_string_first(struct srcpos *pos, int level);
  93 extern char *srcpos_string_last(struct srcpos *pos, int level);
  94
  95
  96 extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix,
  97                                         const char *fmt, va_list va);
  98 extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix,
  99                                       const char *fmt, ...);
 100
 101 extern void srcpos_set_line(char *f, int l);
 102
 103 #endif /* SRCPOS_H */