Remove files that are not part of GCC 3.4.x from the vendor branch.

1 files changed, 0 insertions, 1550 deletions

diff --git a/contrib/libstdc++/stl/ropeimpl.h b/contrib/libstdc++/stl/ropeimpl.h
deleted file mode 100644
index 18bb2c9..0000000
--- a/contrib/libstdc++/stl/ropeimpl.h
+++ /dev/null
@@ -1,1550 +0,0 @@
-/*
- * Copyright (c) 1997
- * Silicon Graphics Computer Systems, Inc.
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation.  Silicon Graphics makes no
- * representations about the suitability of this software for any
- * purpose.  It is provided "as is" without express or implied warranty.
- */
-
-/* NOTE: This is an internal header file, included by other STL headers.
- *   You should not attempt to use it directly.
- */
-
-# include <stdio.h>     /* XXX should use <cstdio> */
-# include <iostream.h>  /* XXX should use <iostream> */
-
-__STL_BEGIN_NAMESPACE
-
-#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
-#pragma set woff 1174
-#endif
-
-// Set buf_start, buf_end, and buf_ptr appropriately, filling tmp_buf
-// if necessary.  Assumes _M_path_end[leaf_index] and leaf_pos are correct.
-// Results in a valid buf_ptr if the iterator can be legitimately
-// dereferenced.
-template <class _CharT, class _Alloc>
-void _Rope_iterator_base<_CharT,_Alloc>::_S_setbuf( 
-  _Rope_iterator_base<_CharT,_Alloc>& __x)
-{
-    const _RopeRep* __leaf = __x._M_path_end[__x._M_leaf_index];
-    size_t __leaf_pos = __x._M_leaf_pos;
-    size_t __pos = __x._M_current_pos;
-
-    switch(__leaf->_M_tag) {
-	case _RopeRep::_S_leaf:
-	    __x._M_buf_start = 
-	      ((_Rope_RopeLeaf<_CharT,_Alloc>*)__leaf)->_M_data;
-	    __x._M_buf_ptr = __x._M_buf_start + (__pos - __leaf_pos);
-	    __x._M_buf_end = __x._M_buf_start + __leaf->_M_size;
-	    break;
-	case _RopeRep::_S_function:
-	case _RopeRep::_S_substringfn:
-	    {
-		size_t __len = _S_iterator_buf_len;
-		size_t __buf_start_pos = __leaf_pos;
-		size_t __leaf_end = __leaf_pos + __leaf->_M_size;
-		char_producer<_CharT>* __fn =
-			((_Rope_RopeFunction<_CharT,_Alloc>*)__leaf)->_M_fn;
-
-		if (__buf_start_pos + __len <= __pos) {
-		    __buf_start_pos = __pos - __len/4;
-		    if (__buf_start_pos + __len > __leaf_end) {
-			__buf_start_pos = __leaf_end - __len;
-		    }
-		}
-		if (__buf_start_pos + __len > __leaf_end) {
-		    __len = __leaf_end - __buf_start_pos;
-		}
-		(*__fn)(__buf_start_pos - __leaf_pos, __len, __x._M_tmp_buf);
-		__x._M_buf_ptr = __x._M_tmp_buf + (__pos - __buf_start_pos);
-		__x._M_buf_start = __x._M_tmp_buf;
-		__x._M_buf_end = __x._M_tmp_buf + __len;
-	    }
-	    break;
-	default:
-	    __stl_assert(0);
-    }
-}
-
-// Set path and buffer inside a rope iterator.  We assume that 
-// pos and root are already set.
-template <class _CharT, class _Alloc>
-void _Rope_iterator_base<_CharT,_Alloc>::_S_setcache
-(_Rope_iterator_base<_CharT,_Alloc>& __x)
-{
-    const _RopeRep* __path[_RopeRep::_S_max_rope_depth+1];
-    const _RopeRep* __curr_rope;
-    int __curr_depth = -1;  /* index into path    */
-    size_t __curr_start_pos = 0;
-    size_t __pos = __x._M_current_pos;
-    unsigned char __dirns = 0; // Bit vector marking right turns in the path
-
-    __stl_assert(__pos <= __x._M_root->_M_size);
-    if (__pos >= __x._M_root->_M_size) {
-	__x._M_buf_ptr = 0;
-	return;
-    }
-    __curr_rope = __x._M_root;
-    if (0 != __curr_rope->_M_c_string) {
-	/* Treat the root as a leaf. */
-	__x._M_buf_start = __curr_rope->_M_c_string;
-	__x._M_buf_end = __curr_rope->_M_c_string + __curr_rope->_M_size;
-	__x._M_buf_ptr = __curr_rope->_M_c_string + __pos;
-	__x._M_path_end[0] = __curr_rope;
-	__x._M_leaf_index = 0;
-	__x._M_leaf_pos = 0;
-	return;
-    }
-    for(;;) {
-	++__curr_depth;
-	__stl_assert(__curr_depth <= _RopeRep::_S_max_rope_depth);
-	__path[__curr_depth] = __curr_rope;
-	switch(__curr_rope->_M_tag) {
-	  case _RopeRep::_S_leaf:
-	  case _RopeRep::_S_function:
-	  case _RopeRep::_S_substringfn:
-	    __x._M_leaf_pos = __curr_start_pos;
-	    goto done;
-	  case _RopeRep::_S_concat:
-	    {
-		_Rope_RopeConcatenation<_CharT,_Alloc>* __c =
-			(_Rope_RopeConcatenation<_CharT,_Alloc>*)__curr_rope;
-		_RopeRep* __left = __c->_M_left;
-		size_t __left_len = __left->_M_size;
-		
-		__dirns <<= 1;
-		if (__pos >= __curr_start_pos + __left_len) {
-		    __dirns |= 1;
-		    __curr_rope = __c->_M_right;
-		    __curr_start_pos += __left_len;
-		} else {
-		    __curr_rope = __left;
-		}
-	    }
-	    break;
-	}
-    }
-  done:
-    // Copy last section of path into _M_path_end.
-      {
-	int __i = -1;
-	int __j = __curr_depth + 1 - _S_path_cache_len;
-
-	if (__j < 0) __j = 0;
-	while (__j <= __curr_depth) {
-	    __x._M_path_end[++__i] = __path[__j++];
-	}
-	__x._M_leaf_index = __i;
-      }
-      __x._M_path_directions = __dirns;
-      _S_setbuf(__x);
-}
-
-// Specialized version of the above.  Assumes that
-// the path cache is valid for the previous position.
-template <class _CharT, class _Alloc>
-void _Rope_iterator_base<_CharT,_Alloc>::_S_setcache_for_incr
-(_Rope_iterator_base<_CharT,_Alloc>& __x)
-{
-    int __current_index = __x._M_leaf_index;
-    const _RopeRep* __current_node = __x._M_path_end[__current_index];
-    size_t __len = __current_node->_M_size;
-    size_t __node_start_pos = __x._M_leaf_pos;
-    unsigned char __dirns = __x._M_path_directions;
-    _Rope_RopeConcatenation<_CharT,_Alloc>* __c;
-
-    __stl_assert(__x._M_current_pos <= __x._M_root->_M_size);
-    if (__x._M_current_pos - __node_start_pos < __len) {
-	/* More stuff in this leaf, we just didn't cache it. */
-	_S_setbuf(__x);
-	return;
-    }
-    __stl_assert(__node_start_pos + __len == __x._M_current_pos);
-    //  node_start_pos is starting position of last_node.
-    while (--__current_index >= 0) {
-	if (!(__dirns & 1) /* Path turned left */) 
-	  break;
-	__current_node = __x._M_path_end[__current_index];
-	__c = (_Rope_RopeConcatenation<_CharT,_Alloc>*)__current_node;
-	// Otherwise we were in the right child.  Thus we should pop
-	// the concatenation node.
-	__node_start_pos -= __c->_M_left->_M_size;
-	__dirns >>= 1;
-    }
-    if (__current_index < 0) {
-	// We underflowed the cache. Punt.
-	_S_setcache(__x);
-	return;
-    }
-    __current_node = __x._M_path_end[__current_index];
-    __c = (_Rope_RopeConcatenation<_CharT,_Alloc>*)__current_node;
-    // current_node is a concatenation node.  We are positioned on the first
-    // character in its right child.
-    // node_start_pos is starting position of current_node.
-    __node_start_pos += __c->_M_left->_M_size;
-    __current_node = __c->_M_right;
-    __x._M_path_end[++__current_index] = __current_node;
-    __dirns |= 1;
-    while (_RopeRep::_S_concat == __current_node->_M_tag) {
-	++__current_index;
-	if (_S_path_cache_len == __current_index) {
-	    int __i;
-	    for (__i = 0; __i < _S_path_cache_len-1; __i++) {
-		__x._M_path_end[__i] = __x._M_path_end[__i+1];
-	    }
-	    --__current_index;
-	}
-	__current_node =
-	    ((_Rope_RopeConcatenation<_CharT,_Alloc>*)__current_node)->_M_left;
-	__x._M_path_end[__current_index] = __current_node;
-	__dirns <<= 1;
-	// node_start_pos is unchanged.
-    }
-    __x._M_leaf_index = __current_index;
-    __x._M_leaf_pos = __node_start_pos;
-    __x._M_path_directions = __dirns;
-    _S_setbuf(__x);
-}
-
-template <class _CharT, class _Alloc>
-void _Rope_iterator_base<_CharT,_Alloc>::_M_incr(size_t __n) {
-    _M_current_pos += __n;
-    if (0 != _M_buf_ptr) {
-        size_t __chars_left = _M_buf_end - _M_buf_ptr;
-        if (__chars_left > __n) {
-            _M_buf_ptr += __n;
-        } else if (__chars_left == __n) {
-            _M_buf_ptr += __n;
-            _S_setcache_for_incr(*this);
-        } else {
-            _M_buf_ptr = 0;
-        }
-    }
-}
-
-template <class _CharT, class _Alloc>
-void _Rope_iterator_base<_CharT,_Alloc>::_M_decr(size_t __n) {
-    if (0 != _M_buf_ptr) {
-        size_t __chars_left = _M_buf_ptr - _M_buf_start;
-        if (__chars_left >= __n) {
-            _M_buf_ptr -= __n;
-        } else {
-            _M_buf_ptr = 0;
-        }
-    }
-    _M_current_pos -= __n;
-}
-
-template <class _CharT, class _Alloc>
-void _Rope_iterator<_CharT,_Alloc>::_M_check() {
-    if (_M_root_rope->_M_tree_ptr != _M_root) {
-        // _Rope was modified.  Get things fixed up.
-        _RopeRep::_S_unref(_M_root);
-        _M_root = _M_root_rope->_M_tree_ptr;
-        _RopeRep::_S_ref(_M_root);
-        _M_buf_ptr = 0;
-    }
-}
-
-template <class _CharT, class _Alloc>
-inline 
-_Rope_const_iterator<_CharT, _Alloc>::_Rope_const_iterator(
-  const _Rope_iterator<_CharT,_Alloc>& __x)
-: _Rope_iterator_base<_CharT,_Alloc>(__x) 
-{ }
-
-template <class _CharT, class _Alloc>
-inline _Rope_iterator<_CharT,_Alloc>::_Rope_iterator(
-  rope<_CharT,_Alloc>& __r, size_t __pos)
-: _Rope_iterator_base<_CharT,_Alloc>(__r._M_tree_ptr, __pos), 
-  _M_root_rope(&__r)
-{
-    _RopeRep::_S_ref(_M_root);
-}
-
-template <class _CharT, class _Alloc>
-inline size_t 
-rope<_CharT,_Alloc>::_S_char_ptr_len(const _CharT* __s)
-{
-    const _CharT* __p = __s;
-
-    while (!_S_is0(*__p)) { ++__p; }
-    return (__p - __s);
-}
-
-
-#ifndef __GC
-
-template <class _CharT, class _Alloc>
-inline void _Rope_RopeRep<_CharT,_Alloc>::_M_free_c_string()
-{
-    _CharT* __cstr = _M_c_string;
-    if (0 != __cstr) {
-	size_t __size = _M_size + 1;
-	destroy(__cstr, __cstr + __size);
-	_Data_deallocate(__cstr, __size);
-    }
-}
-
-
-template <class _CharT, class _Alloc>
-#ifdef __STL_USE_STD_ALLOCATORS
-  inline void _Rope_RopeRep<_CharT,_Alloc>::_S_free_string(_CharT* __s,
-							   size_t __n,
-						           allocator_type __a)
-#else
-  inline void _Rope_RopeRep<_CharT,_Alloc>::_S_free_string(_CharT* __s,
-							   size_t __n)
-#endif
-{
-    if (!_S_is_basic_char_type((_CharT*)0)) {
-	destroy(__s, __s + __n);
-    }
-//  This has to be a static member, so this gets a bit messy
-#   ifdef __STL_USE_STD_ALLOCATORS
-        __a.deallocate(
-	    __s, _Rope_RopeLeaf<_CharT,_Alloc>::_S_rounded_up_size(__n));
-#   else
-	_Data_deallocate(
-	    __s, _Rope_RopeLeaf<_CharT,_Alloc>::_S_rounded_up_size(__n));
-#   endif
-}
-
-
-//  There are several reasons for not doing this with virtual destructors
-//  and a class specific delete operator:
-//  - A class specific delete operator can't easily get access to
-//    allocator instances if we need them.
-//  - Any virtual function would need a 4 or byte vtable pointer;
-//    this only requires a one byte tag per object.
-template <class _CharT, class _Alloc>
-void _Rope_RopeRep<_CharT,_Alloc>::_M_free_tree()
-{
-    switch(_M_tag) {
-	case _S_leaf:
-	    {
-	        _Rope_RopeLeaf<_CharT,_Alloc>* __l
-			= (_Rope_RopeLeaf<_CharT,_Alloc>*)this;
-	        __l->_Rope_RopeLeaf<_CharT,_Alloc>::~_Rope_RopeLeaf();
-	        _L_deallocate(__l, 1);
-	        break;
-	    }
-	case _S_concat:
-	    {
-	        _Rope_RopeConcatenation<_CharT,_Alloc>* __c
-		    = (_Rope_RopeConcatenation<_CharT,_Alloc>*)this;
-	        __c->_Rope_RopeConcatenation<_CharT,_Alloc>::
-		       ~_Rope_RopeConcatenation();
-	        _C_deallocate(__c, 1);
-	        break;
-	    }
-	case _S_function:
-	    {
-	        _Rope_RopeFunction<_CharT,_Alloc>* __f
-		    = (_Rope_RopeFunction<_CharT,_Alloc>*)this;
-	        __f->_Rope_RopeFunction<_CharT,_Alloc>::~_Rope_RopeFunction();
-	        _F_deallocate(__f, 1);
-	        break;
-	    }
-	case _S_substringfn:
-	    {
-	        _Rope_RopeSubstring<_CharT,_Alloc>* __ss =
-			(_Rope_RopeSubstring<_CharT,_Alloc>*)this;
-		__ss->_Rope_RopeSubstring<_CharT,_Alloc>::
-		        ~_Rope_RopeSubstring();
-		_S_deallocate(__ss, 1);
-		break;
-	    }
-    }
-}
-#else
-
-template <class _CharT, class _Alloc>
-#ifdef __STL_USE_STD_ALLOCATORS
-  inline void _Rope_RopeRep<_CharT,_Alloc>::_S_free_string
-		(const _CharT*, size_t, allocator_type)
-#else
-  inline void _Rope_RopeRep<_CharT,_Alloc>::_S_free_string
-		(const _CharT*, size_t)
-#endif
-{}
-
-#endif
-
-
-// Concatenate a C string onto a leaf rope by copying the rope data.
-// Used for short ropes.
-template <class _CharT, class _Alloc>
-rope<_CharT,_Alloc>::_RopeLeaf*
-rope<_CharT,_Alloc>::_S_leaf_concat_char_iter
-		(_RopeLeaf* __r, const _CharT* __iter, size_t __len)
-{
-    size_t __old_len = __r->_M_size;
-    _CharT* __new_data = (_CharT*)
-	_Data_allocate(_S_rounded_up_size(__old_len + __len));
-    _RopeLeaf* __result;
-    
-    uninitialized_copy_n(__r->_M_data, __old_len, __new_data);
-    uninitialized_copy_n(__iter, __len, __new_data + __old_len);
-    _S_cond_store_eos(__new_data[__old_len + __len]);
-    __STL_TRY {
-	__result = _S_new_RopeLeaf(__new_data, __old_len + __len,
-				   __r->get_allocator());
-    }
-    __STL_UNWIND(_RopeRep::__STL_FREE_STRING(__new_data, __old_len + __len,
-					     __r->get_allocator()));
-    return __result;
-}
-
-#ifndef __GC
-// As above, but it's OK to clobber original if refcount is 1
-template <class _CharT, class _Alloc>
-rope<_CharT,_Alloc>::_RopeLeaf*
-rope<_CharT,_Alloc>::_S_destr_leaf_concat_char_iter
-		(_RopeLeaf* __r, const _CharT* __iter, size_t __len)
-{
-    __stl_assert(__r->_M_refcount >= 1);
-    if (__r->_M_refcount > 1)
-      return _S_leaf_concat_char_iter(__r, __iter, __len);
-    size_t __old_len = __r->_M_size;
-    if (_S_allocated_capacity(__old_len) >= __old_len + __len) {
-	// The space has been partially initialized for the standard
-	// character types.  But that doesn't matter for those types.
-	uninitialized_copy_n(__iter, __len, __r->_M_data + __old_len);
-	if (_S_is_basic_char_type((_CharT*)0)) {
-	    _S_cond_store_eos(__r->_M_data[__old_len + __len]);
-	    __stl_assert(__r->_M_c_string == __r->_M_data);
-	} else if (__r->_M_c_string != __r->_M_data && 0 != __r->_M_c_string) {
-	    __r->_M_free_c_string();
-	    __r->_M_c_string = 0;
-	}
-	__r->_M_size = __old_len + __len;
-	__stl_assert(__r->_M_refcount == 1);
-	__r->_M_refcount = 2;
-	return __r;
-    } else {
-	_RopeLeaf* __result = _S_leaf_concat_char_iter(__r, __iter, __len);
-	__stl_assert(__result->_M_refcount == 1);
-	return __result;
-    }
-}
-#endif
-
-// Assumes left and right are not 0.
-// Does not increment (nor decrement on exception) child reference counts.
-// Result has ref count 1.
-template <class _CharT, class _Alloc>
-rope<_CharT,_Alloc>::_RopeRep*
-rope<_CharT,_Alloc>::_S_tree_concat (_RopeRep* __left, _RopeRep* __right)
-{
-    _RopeConcatenation* __result =
-      _S_new_RopeConcatenation(__left, __right, __left->get_allocator());
-    size_t __depth = __result->_M_depth;
-    
-#   ifdef __STL_USE_STD_ALLOCATORS
-      __stl_assert(__left->get_allocator() == __right->get_allocator());
-#   endif
-    if (__depth > 20 && (__result->_M_size < 1000 ||
-			 __depth > _RopeRep::_S_max_rope_depth)) {
-        _RopeRep* __balanced;
-      
-	__STL_TRY {
-	   __balanced = _S_balance(__result);
-#          ifndef __GC
-	     if (__result != __balanced) {
-		__stl_assert(1 == __result->_M_refcount
-			     && 1 == __balanced->_M_refcount);
-	     }
-#          endif
-	   __result->_M_unref_nonnil();
-        }
-	__STL_UNWIND((_C_deallocate(__result,1)));
-		// In case of exception, we need to deallocate
-		// otherwise dangling result node.  But caller
-		// still owns its children.  Thus unref is
-		// inappropriate.
-	return __balanced;
-    } else {
-	return __result;
-    }
-}
-
-template <class _CharT, class _Alloc>
-rope<_CharT,_Alloc>::_RopeRep* rope<_CharT,_Alloc>::_S_concat_char_iter
-		(_RopeRep* __r, const _CharT*__s, size_t __slen)
-{
-    _RopeRep* __result;
-    if (0 == __slen) {
-	_S_ref(__r);
-	return __r;
-    }
-    if (0 == __r)
-      return __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __slen,
-					      __r->get_allocator());
-    if (_RopeRep::_S_leaf == __r->_M_tag && 
-          __r->_M_size + __slen <= _S_copy_max) {
-	__result = _S_leaf_concat_char_iter((_RopeLeaf*)__r, __s, __slen);
-#       ifndef __GC
-	  __stl_assert(1 == __result->_M_refcount);
-#       endif
-	return __result;
-    }
-    if (_RopeRep::_S_concat == __r->_M_tag
-	&& _RopeRep::_S_leaf == ((_RopeConcatenation*)__r)->_M_right->_M_tag) {
-	_RopeLeaf* __right = 
-	  (_RopeLeaf* )(((_RopeConcatenation* )__r)->_M_right);
-	if (__right->_M_size + __slen <= _S_copy_max) {
-	  _RopeRep* __left = ((_RopeConcatenation*)__r)->_M_left;
-	  _RopeRep* __nright = 
-	    _S_leaf_concat_char_iter((_RopeLeaf*)__right, __s, __slen);
-	  __left->_M_ref_nonnil();
-	  __STL_TRY {
-	    __result = _S_tree_concat(__left, __nright);
-          }
-	  __STL_UNWIND(_S_unref(__left); _S_unref(__nright));
-#         ifndef __GC
-	    __stl_assert(1 == __result->_M_refcount);
-#         endif
-	  return __result;
-	}
-    }
-    _RopeRep* __nright =
-      __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __slen, __r->get_allocator());
-    __STL_TRY {
-      __r->_M_ref_nonnil();
-      __result = _S_tree_concat(__r, __nright);
-    }
-    __STL_UNWIND(_S_unref(__r); _S_unref(__nright));
-#   ifndef __GC
-      __stl_assert(1 == __result->_M_refcount);
-#   endif
-    return __result;
-}
-
-#ifndef __GC
-template <class _CharT, class _Alloc>
-rope<_CharT,_Alloc>::_RopeRep* 
-rope<_CharT,_Alloc>::_S_destr_concat_char_iter(
-  _RopeRep* __r, const _CharT* __s, size_t __slen)
-{
-    _RopeRep* __result;
-    if (0 == __r)
-      return __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __slen,
-					      __r->get_allocator());
-    size_t __count = __r->_M_refcount;
-    size_t __orig_size = __r->_M_size;
-    __stl_assert(__count >= 1);
-    if (__count > 1) return _S_concat_char_iter(__r, __s, __slen);
-    if (0 == __slen) {
-	__r->_M_refcount = 2;      // One more than before
-	return __r;
-    }
-    if (__orig_size + __slen <= _S_copy_max && 
-          _RopeRep::_S_leaf == __r->_M_tag) {
-	__result = _S_destr_leaf_concat_char_iter((_RopeLeaf*)__r, __s, __slen);
-	return __result;
-    }
-    if (_RopeRep::_S_concat == __r->_M_tag) {
-	_RopeLeaf* __right = (_RopeLeaf*)(((_RopeConcatenation*)__r)->_M_right);
-	if (_RopeRep::_S_leaf == __right->_M_tag
-	    && __right->_M_size + __slen <= _S_copy_max) {
-	  _RopeRep* __new_right = 
-	    _S_destr_leaf_concat_char_iter(__right, __s, __slen);
-	  if (__right == __new_right) {
-	      __stl_assert(__new_right->_M_refcount == 2);
-	      __new_right->_M_refcount = 1;
-	  } else {
-	      __stl_assert(__new_right->_M_refcount >= 1);
-	      __right->_M_unref_nonnil();
-	  }
-	  __stl_assert(__r->_M_refcount == 1);
-	  __r->_M_refcount = 2;    // One more than before.
-	  ((_RopeConcatenation*)__r)->_M_right = __new_right;
-	  __r->_M_size = __orig_size + __slen;
-	  if (0 != __r->_M_c_string) {
-	      __r->_M_free_c_string();
-	      __r->_M_c_string = 0;
-	  }
-	  return __r;
-	}
-    }
-    _RopeRep* __right =
-      __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __slen, __r->get_allocator());
-    __r->_M_ref_nonnil();
-    __STL_TRY {
-      __result = _S_tree_concat(__r, __right);
-    }
-    __STL_UNWIND(_S_unref(__r); _S_unref(__right))
-    __stl_assert(1 == __result->_M_refcount);
-    return __result;
-}
-#endif /* !__GC */
-
-template <class _CharT, class _Alloc>
-rope<_CharT,_Alloc>::_RopeRep*
-rope<_CharT,_Alloc>::_S_concat(_RopeRep* __left, _RopeRep* __right)
-{
-    if (0 == __left) {
-	_S_ref(__right);
-	return __right;
-    }
-    if (0 == __right) {
-	__left->_M_ref_nonnil();
-	return __left;
-    }
-    if (_RopeRep::_S_leaf == __right->_M_tag) {
-	if (_RopeRep::_S_leaf == __left->_M_tag) {
-	  if (__right->_M_size + __left->_M_size <= _S_copy_max) {
-	    return _S_leaf_concat_char_iter((_RopeLeaf*)__left,
-					 ((_RopeLeaf*)__right)->_M_data,
-					 __right->_M_size);
-	  }
-	} else if (_RopeRep::_S_concat == __left->_M_tag
-		   && _RopeRep::_S_leaf ==
-		      ((_RopeConcatenation*)__left)->_M_right->_M_tag) {
-	  _RopeLeaf* __leftright =
-		    (_RopeLeaf*)(((_RopeConcatenation*)__left)->_M_right); 
-	  if (__leftright->_M_size + __right->_M_size <= _S_copy_max) {
-	    _RopeRep* __leftleft = ((_RopeConcatenation*)__left)->_M_left;
-	    _RopeRep* __rest = _S_leaf_concat_char_iter(__leftright,
-					   ((_RopeLeaf*)__right)->_M_data,
-					   __right->_M_size);
-	    __leftleft->_M_ref_nonnil();
-	    __STL_TRY {
-	      return(_S_tree_concat(__leftleft, __rest));
-            }
-	    __STL_UNWIND(_S_unref(__leftleft); _S_unref(__rest))
-	  }
-	}
-    }
-    __left->_M_ref_nonnil();
-    __right->_M_ref_nonnil();
-    __STL_TRY {
-      return(_S_tree_concat(__left, __right));
-    }
-    __STL_UNWIND(_S_unref(__left); _S_unref(__right));
-}
-
-template <class _CharT, class _Alloc>
-rope<_CharT,_Alloc>::_RopeRep*
-rope<_CharT,_Alloc>::_S_substring(_RopeRep* __base, 
-                               size_t __start, size_t __endp1)
-{
-    if (0 == __base) return 0;
-    size_t __len = __base->_M_size;
-    size_t __adj_endp1;
-    const size_t __lazy_threshold = 128;
-    
-    if (__endp1 >= __len) {
-	if (0 == __start) {
-	    __base->_M_ref_nonnil();
-	    return __base;
-	} else {
-	    __adj_endp1 = __len;
-	}
-    } else {
-	__adj_endp1 = __endp1;
-    }
-    switch(__base->_M_tag) {
-	case _RopeRep::_S_concat:
-	    {
-		_RopeConcatenation* __c = (_RopeConcatenation*)__base;
-		_RopeRep* __left = __c->_M_left;
-		_RopeRep* __right = __c->_M_right;
-		size_t __left_len = __left->_M_size;
-		_RopeRep* __result;
-
-		if (__adj_endp1 <= __left_len) {
-		    return _S_substring(__left, __start, __endp1);
-		} else if (__start >= __left_len) {
-		    return _S_substring(__right, __start - __left_len,
-				  __adj_endp1 - __left_len);
-		}
-		_Self_destruct_ptr __left_result(
-		  _S_substring(__left, __start, __left_len));
-		_Self_destruct_ptr __right_result(
-		  _S_substring(__right, 0, __endp1 - __left_len));
-		__result = _S_concat(__left_result, __right_result);
-#               ifndef __GC
-		  __stl_assert(1 == __result->_M_refcount);
-#               endif
-		return __result;
-	    }
-	case _RopeRep::_S_leaf:
-	    {
-		_RopeLeaf* __l = (_RopeLeaf*)__base;
-		_RopeLeaf* __result;
-		size_t __result_len;
-		if (__start >= __adj_endp1) return 0;
-		__result_len = __adj_endp1 - __start;
-		if (__result_len > __lazy_threshold) goto lazy;
-#               ifdef __GC
-		    const _CharT* __section = __l->_M_data + __start;
-		    __result = _S_new_RopeLeaf(__section, __result_len,
-					  __base->get_allocator());
-		    __result->_M_c_string = 0;  // Not eos terminated.
-#               else
-		    // We should sometimes create substring node instead.
-		    __result = __STL_ROPE_FROM_UNOWNED_CHAR_PTR(
-					__l->_M_data + __start, __result_len,
-					__base->get_allocator());
-#               endif
-		return __result;
-	    }
-	case _RopeRep::_S_substringfn:
-	    // Avoid introducing multiple layers of substring nodes.
-	    {
-		_RopeSubstring* __old = (_RopeSubstring*)__base;
-		size_t __result_len;
-		if (__start >= __adj_endp1) return 0;
-		__result_len = __adj_endp1 - __start;
-		if (__result_len > __lazy_threshold) {
-		    _RopeSubstring* __result =
-			_S_new_RopeSubstring(__old->_M_base,
-					  __start + __old->_M_start,
-					  __adj_endp1 - __start,
-					  __base->get_allocator());
-		    return __result;
-
-		} // *** else fall through: ***
-	    }
-	case _RopeRep::_S_function:
-	    {
-		_RopeFunction* __f = (_RopeFunction*)__base;
-		_CharT* __section;
-		size_t __result_len;
-		if (__start >= __adj_endp1) return 0;
-		__result_len = __adj_endp1 - __start;
-
-		if (__result_len > __lazy_threshold) goto lazy;
-		__section = (_CharT*)
-			_Data_allocate(_S_rounded_up_size(__result_len));
-		__STL_TRY {
-		  (*(__f->_M_fn))(__start, __result_len, __section);
-                }
-		__STL_UNWIND(_RopeRep::__STL_FREE_STRING(
-	               __section, __result_len, __base->get_allocator()));
-		_S_cond_store_eos(__section[__result_len]);
-		return _S_new_RopeLeaf(__section, __result_len,
-				       __base->get_allocator());
-	    }
-    }
-    /*NOTREACHED*/
-    __stl_assert(false);
-  lazy:
-    {
-	// Create substring node.
-	return _S_new_RopeSubstring(__base, __start, __adj_endp1 - __start,
-			       __base->get_allocator());
-    }
-}
-
-template<class _CharT>
-class _Rope_flatten_char_consumer : public _Rope_char_consumer<_CharT> {
-    private:
-	_CharT* _M_buf_ptr;
-    public:
-	//  _CharT* _M_buffer;  // XXX not used
-
-	_Rope_flatten_char_consumer(_CharT* __buffer) {
-	    _M_buf_ptr = __buffer;
-	};
-	~_Rope_flatten_char_consumer() {}
-	bool operator() (const _CharT* __leaf, size_t __n) {
-	    uninitialized_copy_n(__leaf, __n, _M_buf_ptr);
-	    _M_buf_ptr += __n;
-	    return true;
-	}
-};
-	    
-template<class _CharT>
-class _Rope_find_char_char_consumer : public _Rope_char_consumer<_CharT> {
-    private:
-	_CharT _M_pattern;
-    public:
-	size_t _M_count;  // Number of nonmatching characters
-	_Rope_find_char_char_consumer(_CharT __p) 
-	  : _M_pattern(__p), _M_count(0) {}
-	~_Rope_find_char_char_consumer() {}
-	bool operator() (const _CharT* __leaf, size_t __n) {
-	    size_t __i;
-	    for (__i = 0; __i < __n; __i++) {
-		if (__leaf[__i] == _M_pattern) {
-		    _M_count += __i; return false;
-		}
-	    }
-	    _M_count += __n; return true;
-	}
-};
-	    
-template<class _CharT>
-class _Rope_insert_char_consumer : public _Rope_char_consumer<_CharT> {
-    private:
-	typedef ostream _Insert_ostream;
-	_Insert_ostream& _M_o;
-    public:
-	// _CharT* buffer;    // XXX not used
-	_Rope_insert_char_consumer(_Insert_ostream& __writer) 
-	  : _M_o(__writer) {};
-	~_Rope_insert_char_consumer() { };
-		// Caller is presumed to own the ostream
-	bool operator() (const _CharT* __leaf, size_t __n);
-		// Returns true to continue traversal.
-};
-	    
-template<class _CharT>
-bool _Rope_insert_char_consumer<_CharT>::operator()
-					(const _CharT* __leaf, size_t __n)
-{
-    size_t __i;
-    //  We assume that formatting is set up correctly for each element.
-    for (__i = 0; __i < __n; __i++) _M_o << __leaf[__i];
-    return true;
-}
-
-inline bool _Rope_insert_char_consumer<char>::operator()
-					(const char* __leaf, size_t __n)
-{
-    size_t __i;
-    for (__i = 0; __i < __n; __i++) _M_o.put(__leaf[__i]);
-    return true;
-}
-
-#if 0
-// I couldn't get this to work work with the VC++ version of basic_ostream.
-// It also doesn't really do the right thing unless o is a wide stream.
-// Given that wchar_t is often 4 bytes, its not clear to me how useful
-// this stuff is anyway.
-inline bool _Rope_insert_char_consumer<wchar_t>::operator()
-					(const wchar_t* __leaf, size_t __n)
-{
-    size_t __i;
-    for (__i = 0; __i < __n; __i++) _M_o.put(__leaf[__i]);
-    return true;
-}
-#endif /* !_MSC_VER  && !BORLAND */
-
-template <class _CharT, class _Alloc>
-bool rope<_CharT, _Alloc>::_S_apply_to_pieces(
-				_Rope_char_consumer<_CharT>& __c,
-				const _RopeRep* __r,
-				size_t __begin, size_t __end)
-{
-    if (0 == __r) return true;
-    switch(__r->_M_tag) {
-	case _RopeRep::_S_concat:
-	    {
-		_RopeConcatenation* __conc = (_RopeConcatenation*)__r;
-		_RopeRep* __left =  __conc->_M_left;
-		size_t __left_len = __left->_M_size;
-		if (__begin < __left_len) {
-		    size_t __left_end = min(__left_len, __end);
-		    if (!_S_apply_to_pieces(__c, __left, __begin, __left_end))
-			return false;
-		}
-		if (__end > __left_len) {
-		    _RopeRep* __right =  __conc->_M_right;
-		    size_t __right_start = max(__left_len, __begin);
-		    if (!_S_apply_to_pieces(__c, __right,
-					 __right_start - __left_len,
-					 __end - __left_len)) {
-			return false;
-		    }
-		}
-	    }
-	    return true;
-	case _RopeRep::_S_leaf:
-	    {
-		_RopeLeaf* __l = (_RopeLeaf*)__r;
-		return __c(__l->_M_data + __begin, __end - __begin);
-	    }
-	case _RopeRep::_S_function:
-	case _RopeRep::_S_substringfn:
-	    {
-		_RopeFunction* __f = (_RopeFunction*)__r;
-		size_t __len = __end - __begin;
-		bool __result;
-		_CharT* __buffer =
-		  (_CharT*)alloc::allocate(__len * sizeof(_CharT));
-		__STL_TRY {
-		  (*(__f->_M_fn))(__begin, __end, __buffer);
-		  __result = __c(__buffer, __len);
-                  alloc::deallocate(__buffer, __len * sizeof(_CharT));
-                }
-		__STL_UNWIND((alloc::deallocate(__buffer,
-						__len * sizeof(_CharT))))
-		return __result;
-	    }
-	default:
-	    __stl_assert(false);
-	    /*NOTREACHED*/
-	    return false;
-    }
-}
-
-inline void _Rope_fill(ostream& __o, size_t __n)
-{
-    char __f = __o.fill();
-    size_t __i;
-
-    for (__i = 0; __i < __n; __i++) __o.put(__f);
-}
-    
-
-template <class _CharT> inline bool _Rope_is_simple(_CharT*) { return false; }
-inline bool _Rope_is_simple(char*) { return true; }
-inline bool _Rope_is_simple(wchar_t*) { return true; }
-
-
-template<class _CharT, class _Alloc>
-ostream& operator<< (ostream& __o, const rope<_CharT, _Alloc>& __r)
-{
-    size_t __w = __o.width();
-    bool __left = bool(__o.flags() & ios::left);
-    size_t __pad_len;
-    size_t __rope_len = __r.size();
-    _Rope_insert_char_consumer<_CharT> __c(__o);
-    bool __is_simple = _Rope_is_simple((_CharT*)0);
-    
-    if (__rope_len < __w) {
-	__pad_len = __w - __rope_len;
-    } else {
-	__pad_len = 0;
-    }
-    if (!__is_simple) __o.width(__w/__rope_len);
-    __STL_TRY {
-      if (__is_simple && !__left && __pad_len > 0) {
-	_Rope_fill(__o, __pad_len);
-      }
-      __r.apply_to_pieces(0, __r.size(), __c);
-      if (__is_simple && __left && __pad_len > 0) {
-	_Rope_fill(__o, __pad_len);
-      }
-      if (!__is_simple)
-        __o.width(__w);
-    }
-    __STL_UNWIND(if (!__is_simple) __o.width(__w))
-    return __o;
-}
-
-template <class _CharT, class _Alloc>
-_CharT*
-rope<_CharT,_Alloc>::_S_flatten(_RopeRep* __r,
-				 size_t __start, size_t __len,
-				 _CharT* __buffer)
-{
-    _Rope_flatten_char_consumer<_CharT> __c(__buffer);
-    _S_apply_to_pieces(__c, __r, __start, __start + __len);
-    return(__buffer + __len);
-}
-
-template <class _CharT, class _Alloc>
-size_t
-rope<_CharT,_Alloc>::find(_CharT __pattern, size_t __start) const
-{
-    _Rope_find_char_char_consumer<_CharT> __c(__pattern);
-    _S_apply_to_pieces(__c, _M_tree_ptr, __start, size());
-    size_type __result_pos = __start + __c._M_count;
-#   ifndef __STL_OLD_ROPE_SEMANTICS
-	if (__result_pos == size()) __result_pos = npos;
-#   endif
-    return __result_pos;
-}
-
-template <class _CharT, class _Alloc>
-_CharT*
-rope<_CharT,_Alloc>::_S_flatten(_RopeRep* __r, _CharT* __buffer)
-{
-    if (0 == __r) return __buffer;
-    switch(__r->_M_tag) {
-	case _RopeRep::_S_concat:
-	    {
-		_RopeConcatenation* __c = (_RopeConcatenation*)__r;
-		_RopeRep* __left = __c->_M_left;
-		_RopeRep* __right = __c->_M_right;
-		_CharT* __rest = _S_flatten(__left, __buffer);
-		return _S_flatten(__right, __rest);
-	    }
-	case _RopeRep::_S_leaf:
-	    {
-		_RopeLeaf* __l = (_RopeLeaf*)__r;
-		return copy_n(__l->_M_data, __l->_M_size, __buffer).second;
-	    }
-	case _RopeRep::_S_function:
-	case _RopeRep::_S_substringfn:
-	    // We dont yet do anything with substring nodes.
-	    // This needs to be fixed before ropefiles will work well.
-	    {
-		_RopeFunction* __f = (_RopeFunction*)__r;
-		(*(__f->_M_fn))(0, __f->_M_size, __buffer);
-		return __buffer + __f->_M_size;
-	    }
-	default:
-	    __stl_assert(false);
-	    /*NOTREACHED*/
-	    return 0;
-    }
-}
-
-
-// This needs work for _CharT != char
-template <class _CharT, class _Alloc>
-void
-rope<_CharT,_Alloc>::_S_dump(_RopeRep* __r, int __indent)
-{
-    for (int __i = 0; __i < __indent; __i++) putchar(' ');
-    if (0 == __r) {
-	printf("NULL\n"); return;
-    }
-    if (_RopeRep::_S_concat == __r->_M_tag) {
-	_RopeConcatenation* __c = (_RopeConcatenation*)__r;
-	_RopeRep* __left = __c->_M_left;
-	_RopeRep* __right = __c->_M_right;
-
-#       ifdef __GC
-	  printf("Concatenation %p (depth = %d, len = %ld, %s balanced)\n",
-	    __r, __r->_M_depth, __r->_M_size, __r->_M_is_balanced? "" : "not");
-#       else
-	  printf("Concatenation %p (rc = %ld, depth = %d, "
-	           "len = %ld, %s balanced)\n",
-		 __r, __r->_M_refcount, __r->_M_depth, __r->_M_size,
-		 __r->_M_is_balanced? "" : "not");
-#       endif
-	_S_dump(__left, __indent + 2);
-	_S_dump(__right, __indent + 2);
-	return;
-    } else {
-	char* __kind;
-
-	switch (__r->_M_tag) {
-	    case _RopeRep::_S_leaf:
-		__kind = "Leaf";
-		break;
-	    case _RopeRep::_S_function:
-		__kind = "Function";
-		break;
-	    case _RopeRep::_S_substringfn:
-		__kind = "Function representing substring";
-		break;
-	    default:
-		__kind = "(corrupted kind field!)";
-	}
-#       ifdef __GC
-	  printf("%s %p (depth = %d, len = %ld) ",
-		 __kind, __r, __r->_M_depth, __r->_M_size);
-#       else
-	  printf("%s %p (rc = %ld, depth = %d, len = %ld) ",
-		 __kind, __r, __r->_M_refcount, __r->_M_depth, __r->_M_size);
-#       endif
-	if (_S_is_one_byte_char_type((_CharT*)0)) {
-	    const int __max_len = 40;
-	    _Self_destruct_ptr __prefix(_S_substring(__r, 0, __max_len));
-	    _CharT __buffer[__max_len + 1];
-	    bool __too_big = __r->_M_size > __prefix->_M_size;
-
-	    _S_flatten(__prefix, __buffer);
-	    __buffer[__prefix->_M_size] = _S_eos((_CharT*)0); 
-	    printf("%s%s\n", 
-	           (char*)__buffer, __too_big? "...\n" : "\n");
-	} else {
-	    printf("\n");
-	}
-    }
-}
-
-template <class _CharT, class _Alloc>
-const unsigned long
-rope<_CharT,_Alloc>::_S_min_len[
-  _Rope_RopeRep<_CharT,_Alloc>::_S_max_rope_depth + 1] = {
-/* 0 */1, /* 1 */2, /* 2 */3, /* 3 */5, /* 4 */8, /* 5 */13, /* 6 */21,
-/* 7 */34, /* 8 */55, /* 9 */89, /* 10 */144, /* 11 */233, /* 12 */377,
-/* 13 */610, /* 14 */987, /* 15 */1597, /* 16 */2584, /* 17 */4181,
-/* 18 */6765, /* 19 */10946, /* 20 */17711, /* 21 */28657, /* 22 */46368,
-/* 23 */75025, /* 24 */121393, /* 25 */196418, /* 26 */317811,
-/* 27 */514229, /* 28 */832040, /* 29 */1346269, /* 30 */2178309,
-/* 31 */3524578, /* 32 */5702887, /* 33 */9227465, /* 34 */14930352,
-/* 35 */24157817, /* 36 */39088169, /* 37 */63245986, /* 38 */102334155,
-/* 39 */165580141, /* 40 */267914296, /* 41 */433494437,
-/* 42 */701408733, /* 43 */1134903170, /* 44 */1836311903,
-/* 45 */2971215073u };
-// These are Fibonacci numbers < 2**32.
-
-template <class _CharT, class _Alloc>
-rope<_CharT,_Alloc>::_RopeRep*
-rope<_CharT,_Alloc>::_S_balance(_RopeRep* __r)
-{
-    _RopeRep* __forest[_RopeRep::_S_max_rope_depth + 1];
-    _RopeRep* __result = 0;
-    int __i;
-    // Invariant:
-    // The concatenation of forest in descending order is equal to __r.
-    // __forest[__i]._M_size >= _S_min_len[__i]
-    // __forest[__i]._M_depth = __i
-    // References from forest are included in refcount.
-
-    for (__i = 0; __i <= _RopeRep::_S_max_rope_depth; ++__i) 
-      __forest[__i] = 0;
-    __STL_TRY {
-      _S_add_to_forest(__r, __forest);
-      for (__i = 0; __i <= _RopeRep::_S_max_rope_depth; ++__i) 
-        if (0 != __forest[__i]) {
-#	ifndef __GC
-	  _Self_destruct_ptr __old(__result);
-#	endif
-	  __result = _S_concat(__forest[__i], __result);
-	__forest[__i]->_M_unref_nonnil();
-#	if !defined(__GC) && defined(__STL_USE_EXCEPTIONS)
-	  __forest[__i] = 0;
-#	endif
-      }
-    }
-    __STL_UNWIND(for(__i = 0; __i <= _RopeRep::_S_max_rope_depth; __i++)
-		 _S_unref(__forest[__i]))
-    if (__result->_M_depth > _RopeRep::_S_max_rope_depth) abort();
-    return(__result);
-}
-
-
-template <class _CharT, class _Alloc>
-void
-rope<_CharT,_Alloc>::_S_add_to_forest(_RopeRep* __r, _RopeRep** __forest)
-{
-    if (__r->_M_is_balanced) {
-	_S_add_leaf_to_forest(__r, __forest);
-	return;
-    }
-    __stl_assert(__r->_M_tag == _RopeRep::_S_concat);
-    {
-	_RopeConcatenation* __c = (_RopeConcatenation*)__r;
-
-	_S_add_to_forest(__c->_M_left, __forest);
-	_S_add_to_forest(__c->_M_right, __forest);
-    }
-}
-
-
-template <class _CharT, class _Alloc>
-void
-rope<_CharT,_Alloc>::_S_add_leaf_to_forest(_RopeRep* __r, _RopeRep** __forest)
-{
-    _RopeRep* __insertee;   		// included in refcount
-    _RopeRep* __too_tiny = 0;    	// included in refcount
-    int __i;  				// forest[0..__i-1] is empty
-    size_t __s = __r->_M_size;
-
-    for (__i = 0; __s >= _S_min_len[__i+1]/* not this bucket */; ++__i) {
-	if (0 != __forest[__i]) {
-#	    ifndef __GC
-	      _Self_destruct_ptr __old(__too_tiny);
-#	    endif
-	    __too_tiny = _S_concat_and_set_balanced(__forest[__i], __too_tiny);
-	    __forest[__i]->_M_unref_nonnil();
-	    __forest[__i] = 0;
-	}
-    }
-    {
-#	ifndef __GC
-	  _Self_destruct_ptr __old(__too_tiny);
-#	endif
-	__insertee = _S_concat_and_set_balanced(__too_tiny, __r);
-    }
-    // Too_tiny dead, and no longer included in refcount.
-    // Insertee is live and included.
-    __stl_assert(_S_is_almost_balanced(__insertee));
-    __stl_assert(__insertee->_M_depth <= __r->_M_depth + 1);
-    for (;; ++__i) {
-	if (0 != __forest[__i]) {
-#	    ifndef __GC
-	      _Self_destruct_ptr __old(__insertee);
-#	    endif
-	    __insertee = _S_concat_and_set_balanced(__forest[__i], __insertee);
-	    __forest[__i]->_M_unref_nonnil();
-	    __forest[__i] = 0;
-	    __stl_assert(_S_is_almost_balanced(__insertee));
-	}
-	__stl_assert(_S_min_len[__i] <= __insertee->_M_size);
-	__stl_assert(__forest[__i] == 0);
-	if (__i == _RopeRep::_S_max_rope_depth || 
-	      __insertee->_M_size < _S_min_len[__i+1]) {
-	    __forest[__i] = __insertee;
-	    // refcount is OK since __insertee is now dead.
-	    return;
-	}
-    }
-}
-
-template <class _CharT, class _Alloc>
-_CharT
-rope<_CharT,_Alloc>::_S_fetch(_RopeRep* __r, size_type __i)
-{
-    __GC_CONST _CharT* __cstr = __r->_M_c_string;
-
-    __stl_assert(__i < __r->_M_size);
-    if (0 != __cstr) return __cstr[__i]; 
-    for(;;) {
-      switch(__r->_M_tag) {
-	case _RopeRep::_S_concat:
-	    {
-		_RopeConcatenation* __c = (_RopeConcatenation*)__r;
-		_RopeRep* __left = __c->_M_left;
-		size_t __left_len = __left->_M_size;
-
-		if (__i >= __left_len) {
-		    __i -= __left_len;
-		    __r = __c->_M_right;
-		} else {
-		    __r = __left;
-		}
-	    }
-	    break;
-	case _RopeRep::_S_leaf:
-	    {
-		_RopeLeaf* __l = (_RopeLeaf*)__r;
-		return __l->_M_data[__i];
-	    }
-	case _RopeRep::_S_function:
-	case _RopeRep::_S_substringfn:
-	    {
-		_RopeFunction* __f = (_RopeFunction*)__r;
-		_CharT __result;
-
-		(*(__f->_M_fn))(__i, 1, &__result);
-		return __result;
-	    }
-      }
-    }
-}
-
-# ifndef __GC
-// Return a uniquely referenced character slot for the given
-// position, or 0 if that's not possible.
-template <class _CharT, class _Alloc>
-_CharT*
-rope<_CharT,_Alloc>::_S_fetch_ptr(_RopeRep* __r, size_type __i)
-{
-    _RopeRep* __clrstack[_RopeRep::_S_max_rope_depth];
-    size_t __csptr = 0;
-
-    for(;;) {
-      if (__r->_M_refcount > 1) return 0;
-      switch(__r->_M_tag) {
-	case _RopeRep::_S_concat:
-	    {
-		_RopeConcatenation* __c = (_RopeConcatenation*)__r;
-		_RopeRep* __left = __c->_M_left;
-		size_t __left_len = __left->_M_size;
-
-		if (__c->_M_c_string != 0) __clrstack[__csptr++] = __c;
-		if (__i >= __left_len) {
-		    __i -= __left_len;
-		    __r = __c->_M_right;
-		} else {
-		    __r = __left;
-		}
-	    }
-	    break;
-	case _RopeRep::_S_leaf:
-	    {
-		_RopeLeaf* __l = (_RopeLeaf*)__r;
-		if (__l->_M_c_string != __l->_M_data && __l->_M_c_string != 0)
-		    __clrstack[__csptr++] = __l;
-		while (__csptr > 0) {
-		    -- __csptr;
-		    _RopeRep* __d = __clrstack[__csptr];
-		    __d->_M_free_c_string();
-		    __d->_M_c_string = 0;
-		}
-		return __l->_M_data + __i;
-	    }
-	case _RopeRep::_S_function:
-	case _RopeRep::_S_substringfn:
-	    return 0;
-      }
-    }
-}
-# endif /* __GC */
-
-// The following could be implemented trivially using
-// lexicographical_compare_3way.
-// We do a little more work to avoid dealing with rope iterators for
-// flat strings.
-template <class _CharT, class _Alloc>
-int
-rope<_CharT,_Alloc>::_S_compare (const _RopeRep* __left, 
-                                 const _RopeRep* __right)
-{
-    size_t __left_len;
-    size_t __right_len;
-
-    if (0 == __right) return 0 != __left;
-    if (0 == __left) return -1;
-    __left_len = __left->_M_size;
-    __right_len = __right->_M_size;
-    if (_RopeRep::_S_leaf == __left->_M_tag) {
-	_RopeLeaf* __l = (_RopeLeaf*) __left;
-	if (_RopeRep::_S_leaf == __right->_M_tag) {
-	    _RopeLeaf* __r = (_RopeLeaf*) __right;
-	    return lexicographical_compare_3way(
-			__l->_M_data, __l->_M_data + __left_len,
-			__r->_M_data, __r->_M_data + __right_len);
-	} else {
-	    const_iterator __rstart(__right, 0);
-	    const_iterator __rend(__right, __right_len);
-	    return lexicographical_compare_3way(
-			__l->_M_data, __l->_M_data + __left_len,
-			__rstart, __rend);
-	}
-    } else {
-	const_iterator __lstart(__left, 0);
-	const_iterator __lend(__left, __left_len);
-	if (_RopeRep::_S_leaf == __right->_M_tag) {
-	    _RopeLeaf* __r = (_RopeLeaf*) __right;
-	    return lexicographical_compare_3way(
-				   __lstart, __lend,
-				   __r->_M_data, __r->_M_data + __right_len);
-	} else {
-	    const_iterator __rstart(__right, 0);
-	    const_iterator __rend(__right, __right_len);
-	    return lexicographical_compare_3way(
-				   __lstart, __lend,
-				   __rstart, __rend);
-	}
-    }
-}
-
-// Assignment to reference proxies.
-template <class _CharT, class _Alloc>
-_Rope_char_ref_proxy<_CharT, _Alloc>&
-_Rope_char_ref_proxy<_CharT, _Alloc>::operator= (_CharT __c) {
-    _RopeRep* __old = _M_root->_M_tree_ptr;
-#   ifndef __GC
-	// First check for the case in which everything is uniquely
-	// referenced.  In that case we can do this destructively.
-	_CharT* __ptr = _My_rope::_S_fetch_ptr(__old, _M_pos);
-	if (0 != __ptr) {
-	    *__ptr = __c;
-	    return *this;
-	}
-#   endif
-    _Self_destruct_ptr __left(
-      _My_rope::_S_substring(__old, 0, _M_pos));
-    _Self_destruct_ptr __right(
-      _My_rope::_S_substring(__old, _M_pos+1, __old->_M_size));
-    _Self_destruct_ptr __result_left(
-      _My_rope::_S_destr_concat_char_iter(__left, &__c, 1));
-
-#   ifndef __GC
-      __stl_assert(__left == __result_left || 1 == __result_left->_M_refcount);
-#   endif
-    _RopeRep* __result =
-		_My_rope::_S_concat(__result_left, __right);
-#   ifndef __GC
-      __stl_assert(1 <= __result->_M_refcount);
-      _RopeRep::_S_unref(__old);
-#   endif
-    _M_root->_M_tree_ptr = __result;
-    return *this;
-}
-
-template <class _CharT, class _Alloc>
-inline _Rope_char_ref_proxy<_CharT, _Alloc>::operator _CharT () const
-{
-    if (_M_current_valid) {
-	return _M_current;
-    } else {
-        return _My_rope::_S_fetch(_M_root->_M_tree_ptr, _M_pos);
-    }
-}
-template <class _CharT, class _Alloc>
-_Rope_char_ptr_proxy<_CharT, _Alloc>
-_Rope_char_ref_proxy<_CharT, _Alloc>::operator& () const {
-    return _Rope_char_ptr_proxy<_CharT, _Alloc>(*this);
-}
-
-template <class _CharT, class _Alloc>
-rope<_CharT, _Alloc>::rope(size_t __n, _CharT __c,
-			   const allocator_type& __a)
-: _Base(__a)
-{
-    rope<_CharT,_Alloc> __result;
-    const size_t __exponentiate_threshold = 32;
-    size_t __exponent;
-    size_t __rest;
-    _CharT* __rest_buffer;
-    _RopeRep* __remainder;
-    rope<_CharT,_Alloc> __remainder_rope;
-
-    if (0 == __n)
-      return;
-    
-    __exponent = __n / __exponentiate_threshold;
-    __rest = __n % __exponentiate_threshold;
-    if (0 == __rest) {
-	__remainder = 0;
-    } else {
-	__rest_buffer = _Data_allocate(_S_rounded_up_size(__rest));
-	uninitialized_fill_n(__rest_buffer, __rest, __c);
-	_S_cond_store_eos(__rest_buffer[__rest]);
-	__STL_TRY {
-	    __remainder = _S_new_RopeLeaf(__rest_buffer, __rest, __a);
-        }
-	__STL_UNWIND(_RopeRep::__STL_FREE_STRING(__rest_buffer, __rest, __a))
-    }
-    __remainder_rope._M_tree_ptr = __remainder;
-    if (__exponent != 0) {
-	_CharT* __base_buffer =
-	  _Data_allocate(_S_rounded_up_size(__exponentiate_threshold));
-	_RopeLeaf* __base_leaf;
-	rope __base_rope;
-	uninitialized_fill_n(__base_buffer, __exponentiate_threshold, __c);
-	_S_cond_store_eos(__base_buffer[__exponentiate_threshold]);
-	__STL_TRY {
-          __base_leaf = _S_new_RopeLeaf(__base_buffer,
-                                        __exponentiate_threshold, __a);
-        }
-	__STL_UNWIND(_RopeRep::__STL_FREE_STRING(__base_buffer, 
-	                                         __exponentiate_threshold, __a))
-	__base_rope._M_tree_ptr = __base_leaf;
- 	if (1 == __exponent) {
-	  __result = __base_rope;
-#         ifndef __GC
-	    __stl_assert(2 == __result._M_tree_ptr->_M_refcount);
-		// One each for base_rope and __result
-#         endif
-	} else {
-	  // XXX what is power()?
-	  __result = power(__base_rope, __exponent, _Concat_fn());
-	}
-	if (0 != __remainder) {
-	  __result += __remainder_rope;
-	}
-    } else {
-	__result = __remainder_rope;
-    }
-    _M_tree_ptr = __result._M_tree_ptr;
-    _M_tree_ptr->_M_ref_nonnil();
-}
-
-template<class _CharT, class _Alloc>
-  _CharT rope<_CharT,_Alloc>::_S_empty_c_str[1];
-
-# ifdef __STL_PTHREADS
-    template<class _CharT, class _Alloc>
-    pthread_mutex_t 
-    rope<_CharT,_Alloc>::_S_swap_lock = PTHREAD_MUTEX_INITIALIZER;
-# endif
-
-template<class _CharT, class _Alloc>
-const _CharT* rope<_CharT,_Alloc>::c_str() const {
-    if (0 == _M_tree_ptr) {
-        _S_empty_c_str[0] = _S_eos((_CharT*)0);  // Possibly redundant,
-					     // but probably fast.
-        return _S_empty_c_str;
-    }
-    __GC_CONST _CharT* __old_c_string = _M_tree_ptr->_M_c_string;
-    if (0 != __old_c_string) return(__old_c_string);
-    size_t __s = size();
-    _CharT* __result = _Data_allocate(__s + 1);
-    _S_flatten(_M_tree_ptr, __result);
-    __result[__s] = _S_eos((_CharT*)0);
-#   ifdef __GC
-	_M_tree_ptr->_M_c_string = __result;
-#   else
-      if ((__old_c_string = 
-             _S_atomic_swap(&(_M_tree_ptr->_M_c_string), __result)) != 0) {
-	// It must have been added in the interim.  Hence it had to have been
-	// separately allocated.  Deallocate the old copy, since we just
-	// replaced it.
-	destroy(__old_c_string, __old_c_string + __s + 1);
-	_Data_deallocate(__old_c_string, __s + 1);
-      }
-#   endif
-    return(__result);
-}
-
-template<class _CharT, class _Alloc>
-const _CharT* rope<_CharT,_Alloc>::replace_with_c_str() {
-    if (0 == _M_tree_ptr) {
-        _S_empty_c_str[0] = _S_eos((_CharT*)0);
-        return _S_empty_c_str;
-    }
-    __GC_CONST _CharT* __old_c_string = _M_tree_ptr->_M_c_string;
-    if (_RopeRep::_S_leaf == _M_tree_ptr->_M_tag && 0 != __old_c_string) {
-	return(__old_c_string);
-    }
-    size_t __s = size();
-    _CharT* __result = _Data_allocate(_S_rounded_up_size(__s));
-    _S_flatten(_M_tree_ptr, __result);
-    __result[__s] = _S_eos((_CharT*)0);
-    _M_tree_ptr->_M_unref_nonnil();
-    _M_tree_ptr = _S_new_RopeLeaf(__result, __s, get_allocator());
-    return(__result);
-}
-
-// Algorithm specializations.  More should be added.
-
-#ifndef _MSC_VER
-// I couldn't get this to work with VC++
-template<class _CharT,class _Alloc>
-void
-_Rope_rotate(_Rope_iterator<_CharT,_Alloc> __first,
-              _Rope_iterator<_CharT,_Alloc> __middle,
-              _Rope_iterator<_CharT,_Alloc> __last)
-{
-    __stl_assert(__first.container() == __middle.container()
-                 && __middle.container() == __last.container());
-    rope<_CharT,_Alloc>& __r(__first.container());
-    rope<_CharT,_Alloc> __prefix = __r.substr(0, __first.index());
-    rope<_CharT,_Alloc> __suffix = 
-      __r.substr(__last.index(), __r.size() - __last.index());
-    rope<_CharT,_Alloc> __part1 = 
-      __r.substr(__middle.index(), __last.index() - __middle.index());
-    rope<_CharT,_Alloc> __part2 = 
-      __r.substr(__first.index(), __middle.index() - __first.index());
-    __r = __prefix;
-    __r += __part1;
-    __r += __part2;
-    __r += __suffix;
-}
-
-#if !defined(__GNUC__)
-// Appears to confuse g++
-inline void rotate(_Rope_iterator<char,__STL_DEFAULT_ALLOCATOR(char)> __first,
-                   _Rope_iterator<char,__STL_DEFAULT_ALLOCATOR(char)> __middle,
-                   _Rope_iterator<char,__STL_DEFAULT_ALLOCATOR(char)> __last) {
-    _Rope_rotate(__first, __middle, __last);
-}
-#endif
-
-# if 0
-// Probably not useful for several reasons:
-// - for SGIs 7.1 compiler and probably some others,
-//   this forces lots of rope<wchar_t, ...> instantiations, creating a
-//   code bloat and compile time problem.  (Fixed in 7.2.)
-// - wchar_t is 4 bytes wide on most UNIX platforms, making it unattractive
-//   for unicode strings.  Unsigned short may be a better character
-//   type.
-inline void rotate(
-		_Rope_iterator<wchar_t,__STL_DEFAULT_ALLOCATOR(char)> __first,
-                _Rope_iterator<wchar_t,__STL_DEFAULT_ALLOCATOR(char)> __middle,
-                _Rope_iterator<wchar_t,__STL_DEFAULT_ALLOCATOR(char)> __last) {
-    _Rope_rotate(__first, __middle, __last);
-}
-# endif
-#endif /* _MSC_VER */
-
-#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
-#pragma reset woff 1174
-#endif
-
-__STL_END_NAMESPACE
-
-// Local Variables:
-// mode:C++
-// End: