Initial revision

From-SVN: r12954

gcc/cp/tinfo.h

+// RTTI support internals for -*- C++ -*-
+// Copyright (C) 1994, 1995, 1996 Free Software Foundation
+
+#include "typeinfo"
+
+// Class declarations shared between the typeinfo implementation files.
+
+// type_info for a class with no base classes (or an enum).
+
+struct __user_type_info : public type_info {
+  __user_type_info (const char *n) : type_info (n) {}
+
+  // If our type can be converted to the desired type, 
+  // return the pointer, adjusted accordingly; else return 0.
+  virtual void* dcast (const type_info &, int, void *,
+		       const type_info * = 0, void * = 0) const;
+};
+
+// type_info for a class with one public, nonvirtual base class.
+
+class __si_type_info : public __user_type_info {
+  const __user_type_info &base;
+
+public:
+  __si_type_info (const char *n, const __user_type_info &b)
+    : __user_type_info (n), base (b) { }
+
+  virtual void *dcast (const type_info &, int, void *,
+		       const type_info * = 0, void * = 0) const;
+};
+
+// type_info for a general class.
+
+typedef unsigned int USItype	__attribute__ ((mode (SI)));
+
+struct __class_type_info : public __user_type_info {
+  enum access { PUBLIC = 1, PROTECTED = 2, PRIVATE = 3 };
+
+  struct base_info {
+    const __user_type_info *base;
+    USItype offset: 29;
+    bool is_virtual: 1;
+    access access: 2;
+  };
+
+  const base_info *base_list;
+  size_t n_bases;
+
+  __class_type_info (const char *name, const base_info *bl, size_t bn)
+    : __user_type_info (name), base_list (bl), n_bases (bn) {}
+
+  // This is a little complex.
+  virtual void* dcast (const type_info &, int, void *,
+		       const type_info * = 0, void * = 0) const;
+};