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 27 struct srcfile_state { 28 FILE *f; 29 char *name; 30 char *dir; 31 int lineno, colno; 32 struct srcfile_state *prev; 33 }; 34 35 extern FILE *depfile; /* = NULL */ 36 extern 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 */ 57 FILE *srcfile_relative_open(const char *fname, char **fullnamep); 58 59 void srcfile_push(const char *fname); 60 bool 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 */ 69 void srcfile_add_search_path(const char *dirname); 70 71 struct srcpos { 72 int first_line; 73 int first_column; 74 int last_line; 75 int last_column; 76 struct srcfile_state *file; 77 struct srcpos *next; 78 }; 79 80 #define YYLTYPE struct srcpos 81 82 #define YYLLOC_DEFAULT(Current, Rhs, N) \ 83 do { \ 84 if (N) { \ 85 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \ 86 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \ 87 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \ 88 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ 89 (Current).file = YYRHSLOC(Rhs, N).file; \ 90 } else { \ 91 (Current).first_line = (Current).last_line = \ 92 YYRHSLOC(Rhs, 0).last_line; \ 93 (Current).first_column = (Current).last_column = \ 94 YYRHSLOC(Rhs, 0).last_column; \ 95 (Current).file = YYRHSLOC (Rhs, 0).file; \ 96 } \ 97 (Current).next = NULL; \ 98 } while (0) 99 100 101 extern void srcpos_update(struct srcpos *pos, const char *text, int len); 102 extern struct srcpos *srcpos_copy(struct srcpos *pos); 103 extern struct srcpos *srcpos_extend(struct srcpos *new_srcpos, 104 struct srcpos *old_srcpos); 105 extern char *srcpos_string(struct srcpos *pos); 106 extern char *srcpos_string_first(struct srcpos *pos, int level); 107 extern char *srcpos_string_last(struct srcpos *pos, int level); 108 109 110 extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix, 111 const char *fmt, va_list va); 112 extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix, 113 const char *fmt, ...); 114 115 extern void srcpos_set_line(char *f, int l); 116 117 #endif /* SRCPOS_H */ 118