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[v3] Couple of iostreams clean ups


Hi,

tested x86-linux, committed.

Paolo.

//////////
2003-06-30  Paolo Carlini  <pcarlini@unitus.it>

	* include/std/std_streambuf.h (_M_mode): Move from here to
	filebuf and stringbuf.
	(~basic_streambuf()): Don't set _M_mode.
	(basic_streambuf()): Don't set _M_mode.
	* include/std/std_fstream.h (_M_mode): Move here, from streambuf.
	(~basic_filebuf()): Clean up.
	* include/bits/fstream.tcc (basic_filebuf()): Set _M_mode.
	* include/std/std_sstream.h (_M_mode): Move here, from streambuf.
	* testsuite/27_io/basic_streambuf/cons/char/1.cc: Don't set _M_mode.
	* testsuite/27_io/basic_streambuf/overflow/char/1.cc: Likewise.
	* testsuite/27_io/basic_streambuf/sgetc/char/1.cc: Likewise.
	* testsuite/27_io/basic_streambuf/sgetn/char/1.cc: Likewise.
	* testsuite/27_io/basic_streambuf/sputn/char/1.cc: Likewise.

2003-06-30  Paolo Carlini  <pcarlini@unitus.it>

	* include/std/std_fstream.h (_M_underflow): Remove.
	(uflow): Remove, inherited from streambuf.
	(underflow): Only declare.
	* include/bits/fstream.tcc (_M_underflow): Rename to 
	underflow, to which is equivalent for __bump == false,
	simplify.
	* include/std/std_sstream.h (_M_underflow): Remove.
	(uflow): Remove, inherited from streambuf.
	(underflow): Only declare.
	* include/bits/sstream.tcc (_M_underflow): Rename to 
	underflow, to which is equivalent for __bump == false,
	simplify.
diff -urN libstdc++-v3-curr/include/bits/fstream.tcc libstdc++-v3/include/bits/fstream.tcc
--- libstdc++-v3-curr/include/bits/fstream.tcc	2003-06-28 22:18:41.000000000 +0200
+++ libstdc++-v3/include/bits/fstream.tcc	2003-06-29 17:28:55.000000000 +0200
@@ -69,11 +69,11 @@
   template<typename _CharT, typename _Traits>
     basic_filebuf<_CharT, _Traits>::
     basic_filebuf() : __streambuf_type(), _M_file(&_M_lock), 
-    _M_state_cur(__state_type()), _M_state_beg(__state_type()),
-    _M_buf(NULL), _M_buf_size(BUFSIZ), _M_buf_allocated(false),
-    _M_reading(false), _M_writing(false), _M_last_overflowed(false),
-    _M_pback_cur_save(0), _M_pback_end_save(0), _M_pback_init(false),
-    _M_codecvt(0)
+    _M_mode(ios_base::openmode(0)), _M_state_cur(__state_type()),
+    _M_state_beg(__state_type()), _M_buf(NULL), _M_buf_size(BUFSIZ),
+    _M_buf_allocated(false), _M_reading(false), _M_writing(false),
+    _M_last_overflowed(false), _M_pback_cur_save(0), _M_pback_end_save(0),
+    _M_pback_init(false), _M_codecvt(0)
     { 
       if (has_facet<__codecvt_type>(this->_M_buf_locale))
 	_M_codecvt = &use_facet<__codecvt_type>(this->_M_buf_locale);
diff -urN libstdc++-v3-curr/include/std/std_fstream.h libstdc++-v3/include/std/std_fstream.h
--- libstdc++-v3-curr/include/std/std_fstream.h	2003-06-28 22:22:47.000000000 +0200
+++ libstdc++-v3/include/std/std_fstream.h	2003-06-29 18:59:59.000000000 +0200
@@ -105,6 +105,13 @@
       */
       __file_type 		_M_file;
 
+      /**
+       *  @if maint
+       *  Place to stash in || out || in | out settings for current filebuf.
+       *  @endif
+      */
+      ios_base::openmode 	_M_mode;
+
       // Current and beginning state type for codecvt.
       /**
        *  @if maint
@@ -213,8 +220,6 @@
       ~basic_filebuf()
       {
 	this->close();
-	_M_buf_size = 0;
-	_M_last_overflowed = false;
       }
 
       // Members:
diff -urN libstdc++-v3-curr/include/std/std_sstream.h libstdc++-v3/include/std/std_sstream.h
--- libstdc++-v3-curr/include/std/std_sstream.h	2003-06-28 22:22:35.000000000 +0200
+++ libstdc++-v3/include/std/std_sstream.h	2003-06-29 18:20:15.000000000 +0200
@@ -85,6 +85,13 @@
       //@}
 
     protected:
+      /**
+       *  @if maint
+       *  Place to stash in || out || in | out settings for current stringbuf.
+       *  @endif
+      */
+      ios_base::openmode 	_M_mode;
+
       // Data Members:
       /**
        *  @if maint
diff -urN libstdc++-v3-curr/include/std/std_streambuf.h libstdc++-v3/include/std/std_streambuf.h
--- libstdc++-v3-curr/include/std/std_streambuf.h	2003-06-28 23:21:29.000000000 +0200
+++ libstdc++-v3/include/std/std_streambuf.h	2003-06-29 17:35:28.000000000 +0200
@@ -178,13 +178,6 @@
 
       /**
        *  @if maint
-       *  Place to stash in || out || in | out settings for current streambuf.
-       *  @endif
-      */
-      ios_base::openmode 	_M_mode;
-
-      /**
-       *  @if maint
        *  Current locale setting.
        *  @endif
       */
@@ -201,9 +194,7 @@
       /// Destructor deallocates no buffer space.
       virtual 
       ~basic_streambuf() 
-      {
-	_M_mode = ios_base::openmode(0);
-      }
+      { }
 
       // [27.5.2.2.1] locales
       /**
@@ -451,7 +442,7 @@
       basic_streambuf()
       : _M_in_beg(0), _M_in_cur(0), _M_in_end(0), 
       _M_out_beg(0), _M_out_cur(0), _M_out_end(0),
-      _M_mode(ios_base::openmode(0)),_M_buf_locale(locale()) 
+      _M_buf_locale(locale()) 
       { }
 
       // [27.5.2.3.1] get area access
diff -urN libstdc++-v3-curr/testsuite/27_io/basic_streambuf/cons/char/1.cc libstdc++-v3/testsuite/27_io/basic_streambuf/cons/char/1.cc
--- libstdc++-v3-curr/testsuite/27_io/basic_streambuf/cons/char/1.cc	2003-04-10 09:15:35.000000000 +0200
+++ libstdc++-v3/testsuite/27_io/basic_streambuf/cons/char/1.cc	2003-06-29 17:54:02.000000000 +0200
@@ -41,7 +41,7 @@
   typedef std::streambuf::char_type char_type;
 
   testbuf(): std::streambuf() 
-  { _M_mode = (std::ios_base::in | std::ios_base::out); }
+  { }
 
   bool
   check_pointers()
diff -urN libstdc++-v3-curr/testsuite/27_io/basic_streambuf/overflow/char/1.cc libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/char/1.cc
--- libstdc++-v3-curr/testsuite/27_io/basic_streambuf/overflow/char/1.cc	2003-04-10 09:15:35.000000000 +0200
+++ libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/char/1.cc	2003-06-29 17:53:41.000000000 +0200
@@ -41,7 +41,7 @@
   typedef std::streambuf::char_type char_type;
 
   testbuf(): std::streambuf() 
-  { _M_mode = (std::ios_base::in | std::ios_base::out); }
+  { }
 
   bool
   check_pointers()
diff -urN libstdc++-v3-curr/testsuite/27_io/basic_streambuf/sgetc/char/1.cc libstdc++-v3/testsuite/27_io/basic_streambuf/sgetc/char/1.cc
--- libstdc++-v3-curr/testsuite/27_io/basic_streambuf/sgetc/char/1.cc	2003-04-10 09:15:35.000000000 +0200
+++ libstdc++-v3/testsuite/27_io/basic_streambuf/sgetc/char/1.cc	2003-06-29 17:54:27.000000000 +0200
@@ -41,7 +41,7 @@
   typedef std::streambuf::char_type char_type;
 
   testbuf(): std::streambuf() 
-  { _M_mode = (std::ios_base::in | std::ios_base::out); }
+  { }
 
   bool
   check_pointers()
diff -urN libstdc++-v3-curr/testsuite/27_io/basic_streambuf/sgetn/char/1.cc libstdc++-v3/testsuite/27_io/basic_streambuf/sgetn/char/1.cc
--- libstdc++-v3-curr/testsuite/27_io/basic_streambuf/sgetn/char/1.cc	2003-04-10 09:15:35.000000000 +0200
+++ libstdc++-v3/testsuite/27_io/basic_streambuf/sgetn/char/1.cc	2003-06-29 17:54:52.000000000 +0200
@@ -41,7 +41,7 @@
   typedef std::streambuf::char_type char_type;
 
   testbuf(): std::streambuf() 
-  { _M_mode = (std::ios_base::in | std::ios_base::out); }
+  { }
 
   bool
   check_pointers()
diff -urN libstdc++-v3-curr/testsuite/27_io/basic_streambuf/sputn/char/1.cc libstdc++-v3/testsuite/27_io/basic_streambuf/sputn/char/1.cc
--- libstdc++-v3-curr/testsuite/27_io/basic_streambuf/sputn/char/1.cc	2003-04-10 09:15:36.000000000 +0200
+++ libstdc++-v3/testsuite/27_io/basic_streambuf/sputn/char/1.cc	2003-06-29 17:55:09.000000000 +0200
@@ -41,7 +41,7 @@
   typedef std::streambuf::char_type char_type;
 
   testbuf(): std::streambuf() 
-  { _M_mode = (std::ios_base::in | std::ios_base::out); }
+  { }
 
   bool
   check_pointers()
diff -urN libstdc++-v3-orig/include/bits/fstream.tcc libstdc++-v3/include/bits/fstream.tcc
--- libstdc++-v3-orig/include/bits/fstream.tcc	2003-06-27 20:28:53.000000000 +0200
+++ libstdc++-v3/include/bits/fstream.tcc	2003-06-28 22:18:41.000000000 +0200
@@ -180,7 +180,7 @@
   template<typename _CharT, typename _Traits>
     typename basic_filebuf<_CharT, _Traits>::int_type 
     basic_filebuf<_CharT, _Traits>::
-    _M_underflow(bool __bump)
+    underflow()
     {
       int_type __ret = traits_type::eof();
       const bool __testin = this->_M_mode & ios_base::in;
@@ -194,12 +194,7 @@
 	  _M_destroy_pback();
 
 	  if (this->gptr() < this->egptr())
-	    {
-	      __ret = traits_type::to_int_type(*this->gptr());
-	      if (__bump)
-		this->gbump(1);
-	      return __ret;
-	    }
+	    return traits_type::to_int_type(*this->gptr());
 
 	  // Get and convert input sequence.
 	  const size_t __buflen = this->_M_buf_size > 1
@@ -247,8 +242,6 @@
 	      _M_set_buffer(__ilen);
 	      _M_reading = true;
 	      __ret = traits_type::to_int_type(*this->gptr());
-	      if (__bump)
-		this->gbump(1);
 	    }
 	  else if (__elen == 0)
 	    {
diff -urN libstdc++-v3-orig/include/bits/sstream.tcc libstdc++-v3/include/bits/sstream.tcc
--- libstdc++-v3-orig/include/bits/sstream.tcc	2003-06-22 20:37:09.000000000 +0200
+++ libstdc++-v3/include/bits/sstream.tcc	2003-06-28 22:19:25.000000000 +0200
@@ -115,7 +115,7 @@
   template <class _CharT, class _Traits, class _Alloc>
     typename basic_stringbuf<_CharT, _Traits, _Alloc>::int_type 
     basic_stringbuf<_CharT, _Traits, _Alloc>::
-    _M_underflow(bool __bump)
+    underflow()
     {
       int_type __ret = traits_type::eof();
       const bool __testin = this->_M_mode & ios_base::in;
@@ -125,11 +125,7 @@
 	  _M_update_egptr();
 
 	  if (this->gptr() < this->egptr())
-	    {
-	      __ret = traits_type::to_int_type(*this->gptr());
-	      if (__bump)
-		this->gbump(1);
-	    }
+	    __ret = traits_type::to_int_type(*this->gptr());
 	}
       return __ret;
     }
diff -urN libstdc++-v3-orig/include/std/std_fstream.h libstdc++-v3/include/std/std_fstream.h
--- libstdc++-v3-orig/include/std/std_fstream.h	2003-06-24 15:48:09.000000000 +0200
+++ libstdc++-v3/include/std/std_fstream.h	2003-06-28 22:22:47.000000000 +0200
@@ -281,29 +281,9 @@
       // charater from the real input source when the buffer is empty.
       // Buffered input uses underflow()
 
-      // The only difference between underflow() and uflow() is that the
-      // latter bumps _M_in_cur after the read.  In the sync_with_stdio
-      // case, this is important, as we need to unget the read character in
-      // the underflow() case in order to maintain synchronization.  So
-      // instead of calling underflow() from uflow(), we create a common
-      // subroutine to do the real work.
-      /**
-       *  @if maint
-       *  @doctodo
-       *  @endif
-      */
-      int_type
-      _M_underflow(bool __bump);
-
-      // [documentation is inherited]
-      virtual int_type
-      underflow()
-      { return _M_underflow(false); }
-
       // [documentation is inherited]
       virtual int_type
-      uflow()
-      { return _M_underflow(true); }
+      underflow();
 
       // [documentation is inherited]
       virtual int_type
diff -urN libstdc++-v3-orig/include/std/std_sstream.h libstdc++-v3/include/std/std_sstream.h
--- libstdc++-v3-orig/include/std/std_sstream.h	2003-06-22 20:37:10.000000000 +0200
+++ libstdc++-v3/include/std/std_sstream.h	2003-06-28 22:22:35.000000000 +0200
@@ -179,18 +179,9 @@
 	_M_sync(const_cast<char_type*>(_M_string.data()), 0, __len);
       }
 
-      int_type
-      _M_underflow(bool __bump);
-
-      // [documentation is inherited]
-      virtual int_type
-      underflow()
-      { return _M_underflow(false); }
-
       // [documentation is inherited]
       virtual int_type
-      uflow()
-      { return _M_underflow(true); }
+      underflow();
 
       // [documentation is inherited]
       virtual int_type

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