make the code compile

include/xlnt/workbook/streaming_workbook_reader.hpp

@@ -23,13 +23,23 @@
 // @author: see AUTHORS file
 #pragma once
 
-#include <cstddef>
-#include <iterator>
+#include <functional>
+#include <iostream>
+#include <memory>
+#include <vector>
 
 #include <xlnt/xlnt_config.hpp>
 
 namespace xlnt {
 
+class cell;
+class path;
+class worksheet;
+
+namespace detail {
+class xlsx_consumer;
+}
+
 /// <summary>
 /// workbook is the container for all other parts of the document.
 /// </summary>
@@ -42,7 +52,7 @@ public:
     /// Closes currently open read stream. This will be called automatically
     /// by the destructor if it hasn't already been called manually.
     /// </summary>
-    close();
+    void close();
 
     /// <summary>
     /// Registers callback as the function to be called when a cell is read.
@@ -88,7 +98,7 @@ public:
     /// Interprets file with the given filename as an XLSX file and sets the
     /// content of this workbook to match that file.
     /// </summary>
-    void open(const xlnt::path &filename);
+    void open(const path &filename);
 
     /// <summary>
     /// Interprets data in stream as an XLSX file and sets the content of this

source/workbook/streaming_workbook_reader.cpp

@@ -22,6 +22,7 @@
 // @license: http://www.opensource.org/licenses/mit-license.php
 // @author: see AUTHORS file
 
+#include <detail/serialization/xlsx_consumer.hpp>
 #include <xlnt/workbook/streaming_workbook_reader.hpp>
 
 namespace xlnt {
@@ -31,7 +32,7 @@ streaming_workbook_reader::~streaming_workbook_reader()
   close();
 }
 
-streaming_workbook_reader::close()
+void streaming_workbook_reader::close()
 {
   if (consumer_)
   {
@@ -41,17 +42,17 @@ streaming_workbook_reader::close()
 
 void streaming_workbook_reader::on_cell(std::function<void(cell)> callback)
 {
-    consumer_->on_cell(callback);
+    //consumer_->on_cell(callback);
 }
 
 void streaming_workbook_reader::on_worksheet_start(std::function<void(std::string)> callback)
 {
-    consumer_->on_worksheet_start(callback);
+    //consumer_->on_worksheet_start(callback);
 }
 
 void streaming_workbook_reader::on_worksheet_end(std::function<void(worksheet)> callback)
 {
-    consumer_->on_worksheet_end(callback);
+    //consumer_->on_worksheet_end(callback);
 }
 
 void streaming_workbook_reader::open(const std::vector<std::uint8_t> &data)