2004-05-17 Steve Kargl <kargls@comcast.net>

[pf3gnuchains/gcc-fork.git] / gcc / cpplib.h

diff --git a/gcc/cpplib.h b/gcc/cpplib.h
index dbbf85b..5ac0a19 100644 (file)
--- a/gcc/cpplib.h
+++ b/gcc/cpplib.h
@@ -42,6 +42,7 @@ typedef struct cpp_callbacks cpp_callbacks;
 typedef struct cpp_dir cpp_dir;
 
 struct answer;
+struct _cpp_file;
 
 /* The first three groups, apart from '=', can appear in preprocessor
    expressions (+= and -= are used to indicate unary + and - resp.).
@@ -283,6 +284,10 @@ struct cpp_options
      promotions.  */
   unsigned char warn_num_sign_change;
 
+  /* Zero means don't warn about __VA_ARGS__ usage in c89 pedantic mode.
+     Presumably the usage is protected by the appropriate #ifdef.  */
+  unsigned char warn_variadic_macros;
+
   /* Nonzero means turn warnings into errors.  */
   unsigned char warnings_are_errors;
 
@@ -374,6 +379,14 @@ struct cpp_options
   unsigned char stdc_0_in_system_headers;
 };
 
+/* Callback for header lookup for HEADER, which is the name of a
+   source file.  It is used as a method of last resort to find headers
+   that are not otherwise found during the normal include processing.
+   The return value is the malloced name of a header to try and open,
+   if any, or NULL otherwise.  This callback is called only if the
+   header is otherwise unfound.  */
+typedef const char *(*missing_header_cb)(cpp_reader *, const char *header, cpp_dir **);
+
 /* Call backs to cpplib client.  */
 struct cpp_callbacks
 {
@@ -395,6 +408,7 @@ struct cpp_callbacks
   void (*def_pragma) (cpp_reader *, unsigned int);
   int (*valid_pch) (cpp_reader *, const char *, int);
   void (*read_pch) (cpp_reader *, const char *, int, const char *);
+  missing_header_cb missing_header;
 };
 
 /* Chain of directories to look for include files in.  */
@@ -415,6 +429,12 @@ struct cpp_dir
      platforms.  A NULL-terminated array of (from, to) pairs.  */
   const char **name_map;
 
+  /* Routine to construct pathname, given the search path name and the
+     HEADER we are trying to find, return a constructed pathname to
+     try and open.  If this is NULL, the constructed pathname is as
+     constructed by append_file_to_dir.  */
+  char *(*construct) (const char *header, cpp_dir *dir);
+
   /* The C front end uses these to recognize duplicated
      directories in the search path.  */
   ino_t ino;
@@ -488,9 +508,9 @@ struct cpp_hashnode GTY(())
   union _cpp_hashnode_value
   {
     /* If a macro.  */
-    cpp_macro * GTY((skip (""))) macro;
+    cpp_macro * GTY((skip)) macro;
     /* Answers to an assertion.  */
-    struct answer * GTY ((skip (""))) answers;
+    struct answer * GTY ((skip)) answers;
     /* Code for a builtin macro.  */
     enum builtin_type GTY ((tag ("1"))) builtin;
     /* Macro argument index.  */
@@ -533,7 +553,7 @@ extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *);
    returns the name of the original file; this is the same as the
    input file, except for preprocessed input.  This will generate at
    least one file change callback, and possibly a line change callback
-   too.  If there was an error opening the file, it returns NULL. */
+   too.  If there was an error opening the file, it returns NULL.  */
 extern const char *cpp_read_main_file (cpp_reader *, const char *);
 
 /* Set up built-ins like __FILE__.  */
@@ -723,6 +743,11 @@ extern bool cpp_included (cpp_reader *, const char *);
 extern void cpp_make_system_header (cpp_reader *, int, int);
 extern bool cpp_push_include (cpp_reader *, const char *);
 extern void cpp_change_file (cpp_reader *, enum lc_reason, const char *);
+extern const char *cpp_get_path (struct _cpp_file *);
+extern cpp_dir *cpp_get_dir (struct _cpp_file *);
+extern cpp_buffer *cpp_get_buffer (cpp_reader *);
+extern struct _cpp_file *cpp_get_file (cpp_buffer *);
+extern cpp_buffer *cpp_get_prev (cpp_buffer *);
 
 /* In cpppch.c */
 struct save_macro_data;