LXR linux/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
  26struct srcfile_state {
  27        FILE *f;
  28        char *name;
  29        char *dir;
  30        int lineno, colno;
  31        struct srcfile_state *prev;
  32};
  33
  34extern FILE *depfile; /* = NULL */
  35extern 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 */
  56FILE *srcfile_relative_open(const char *fname, char **fullnamep);
  57
  58void srcfile_push(const char *fname);
  59bool 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 */
  68void srcfile_add_search_path(const char *dirname);
  69
  70struct 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 */
 103extern struct srcpos srcpos_empty;
 104
 105extern void srcpos_update(struct srcpos *pos, const char *text, int len);
 106extern struct srcpos *srcpos_copy(struct srcpos *pos);
 107extern char *srcpos_string(struct srcpos *pos);
 108extern void srcpos_dump(struct srcpos *pos);
 109
 110extern void srcpos_verror(struct srcpos *pos, const char *prefix,
 111                          const char *fmt, va_list va)
 112        __attribute__((format(printf, 3, 0)));
 113extern void srcpos_error(struct srcpos *pos, const char *prefix,
 114                         const char *fmt, ...)
 115        __attribute__((format(printf, 3, 4)));
 116
 117extern void srcpos_set_line(char *f, int l);
 118
 119#endif /* _SRCPOS_H_ */
 120