srcpos.h 3.5 KB

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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. #ifndef SRCPOS_H
  20. #define SRCPOS_H
  21. #include <stdio.h>
  22. #include <stdbool.h>
  23. #include "util.h"
  24. struct srcfile_state {
  25. FILE *f;
  26. char *name;
  27. char *dir;
  28. int lineno, colno;
  29. struct srcfile_state *prev;
  30. };
  31. extern FILE *depfile; /* = NULL */
  32. extern struct srcfile_state *current_srcfile; /* = NULL */
  33. /**
  34. * Open a source file.
  35. *
  36. * If the source file is a relative pathname, then it is searched for in the
  37. * current directory (the directory of the last source file read) and after
  38. * that in the search path.
  39. *
  40. * We work through the search path in order from the first path specified to
  41. * the last.
  42. *
  43. * If the file is not found, then this function does not return, but calls
  44. * die().
  45. *
  46. * @param fname Filename to search
  47. * @param fullnamep If non-NULL, it is set to the allocated filename of the
  48. * file that was opened. The caller is then responsible
  49. * for freeing the pointer.
  50. * @return pointer to opened FILE
  51. */
  52. FILE *srcfile_relative_open(const char *fname, char **fullnamep);
  53. void srcfile_push(const char *fname);
  54. bool srcfile_pop(void);
  55. /**
  56. * Add a new directory to the search path for input files
  57. *
  58. * The new path is added at the end of the list.
  59. *
  60. * @param dirname Directory to add
  61. */
  62. void srcfile_add_search_path(const char *dirname);
  63. struct srcpos {
  64. int first_line;
  65. int first_column;
  66. int last_line;
  67. int last_column;
  68. struct srcfile_state *file;
  69. };
  70. #define YYLTYPE struct srcpos
  71. #define YYLLOC_DEFAULT(Current, Rhs, N) \
  72. do { \
  73. if (N) { \
  74. (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
  75. (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
  76. (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
  77. (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
  78. (Current).file = YYRHSLOC(Rhs, N).file; \
  79. } else { \
  80. (Current).first_line = (Current).last_line = \
  81. YYRHSLOC(Rhs, 0).last_line; \
  82. (Current).first_column = (Current).last_column = \
  83. YYRHSLOC(Rhs, 0).last_column; \
  84. (Current).file = YYRHSLOC (Rhs, 0).file; \
  85. } \
  86. } while (0)
  87. /*
  88. * Fictional source position used for IR nodes that are
  89. * created without otherwise knowing a true source position.
  90. * For example,constant definitions from the command line.
  91. */
  92. extern struct srcpos srcpos_empty;
  93. extern void srcpos_update(struct srcpos *pos, const char *text, int len);
  94. extern struct srcpos *srcpos_copy(struct srcpos *pos);
  95. extern char *srcpos_string(struct srcpos *pos);
  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. extern void srcpos_set_line(char *f, int l);
  101. #endif /* SRCPOS_H */