Remove ostream from class StreamBuffer

luprex/cpp/core/streambuffer.hpp

@@ -385,13 +385,13 @@ public:
     // Calculate a noncryptographic but good hash of what's in the buffer.
     util::HashValue hash() const;
 
-    // Get an ostream that writes into the StreamBuffer.
-    std::ostream &ostream();
-
     // Throw a StreamCorruption exception.
     void raise_truncated() { throw StreamCorruption(); }
     void raise_string_too_long() { throw StreamCorruption(); }
     
+    // This is for unit testing.
+    bool layout_is(int64_t a, int64_t b, int64_t c);
+
 private:
     // Start and end of the allocated block.
     char *buf_lo_;
@@ -410,21 +410,14 @@ private:
     // True if we're not allowed to expand this buffer.
     bool fixed_size_;
 
-    // The ostream.  Only allocated on demand.
-    std::unique_ptr<std::ostream> ostream_;
-
     // Initialize with a new buffer.
     void init(bool fixed, bool owned, char *buf, int64_t size);
 
+    // Function that resizes the buffer during make_space operations.
     void make_space_slow(int64_t bytes);
     
     // Implementation for the overwrite_int functions.
     char *get_overwrite(int64_t size, int64_t write_count_after);
-
-    // This is for unit testing.
-    bool layout_is(int64_t a, int64_t b, int64_t c);
-    
-    friend int lfn_unittests_streambuffer(lua_State *L);
 };
 
 // Use a streambuffer as a lua_writer.