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#include "util.h"
  26
  27struct srcfile_state {
  28        FILE *f;
  29        char *name;
  30        char *dir;
  31        int lineno, colno;
  32        struct srcfile_state *prev;
  33};
  34
  35extern FILE *depfile; /* = NULL */
  36extern 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 */
  57FILE *srcfile_relative_open(const char *fname, char **fullnamep);
  58
  59void srcfile_push(const char *fname);
  60bool 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 */
  69void srcfile_add_search_path(const char *dirname);
  70
  71struct 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 */
 104extern struct srcpos srcpos_empty;
 105
 106extern void srcpos_update(struct srcpos *pos, const char *text, int len);
 107extern struct srcpos *srcpos_copy(struct srcpos *pos);
 108extern char *srcpos_string(struct srcpos *pos);
 109
 110extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix,
 111                                        const char *fmt, va_list va);
 112extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix,
 113                                      const char *fmt, ...);
 114
 115extern void srcpos_set_line(char *f, int l);
 116
 117#endif /* SRCPOS_H */
 118