linux/scripts/dtc/srcpos.h
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   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
  25struct srcfile_state {
  26        FILE *f;
  27        char *name;
  28        char *dir;
  29        int lineno, colno;
  30        struct srcfile_state *prev;
  31};
  32
  33extern FILE *depfile; /* = NULL */
  34extern 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 */
  55FILE *srcfile_relative_open(const char *fname, char **fullnamep);
  56
  57void srcfile_push(const char *fname);
  58int 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 */
  67void srcfile_add_search_path(const char *dirname);
  68
  69struct 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 */
 102extern struct srcpos srcpos_empty;
 103
 104extern void srcpos_update(struct srcpos *pos, const char *text, int len);
 105extern struct srcpos *srcpos_copy(struct srcpos *pos);
 106extern char *srcpos_string(struct srcpos *pos);
 107extern void srcpos_dump(struct srcpos *pos);
 108
 109extern void srcpos_verror(struct srcpos *pos, char const *, va_list va)
 110     __attribute__((format(printf, 2, 0)));
 111extern void srcpos_error(struct srcpos *pos, char const *, ...)
 112     __attribute__((format(printf, 2, 3)));
 113extern void srcpos_warn(struct srcpos *pos, char const *, ...)
 114     __attribute__((format(printf, 2, 3)));
 115
 116extern void srcpos_set_line(char *f, int l);
 117
 118#endif /* _SRCPOS_H_ */
 119
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