diff --git a/src/jsonexpression.cpp b/src/jsonexpression.cpp
index 1c3d898..f2e67b2 100644
--- a/src/jsonexpression.cpp
+++ b/src/jsonexpression.cpp
@@ -99,6 +99,24 @@ void JSONExpression::after_field_value_string(const FT & field_type)
 }
 
 
+void JSONExpression::before_field_value(const pt::Space &, const FT & field_type)
+{
+	if( field_type.is_space() )
+	{
+		before_field_value_string(field_type);
+	}
+}
+
+void JSONExpression::after_field_value(const pt::Space &, const FT & field_type)
+{
+	if( field_type.is_space() )
+	{
+		after_field_value_string(field_type);
+	}
+}
+
+
+
 void JSONExpression::put_name_value_separator()
 {
 	(*out_stream) << ':';
@@ -130,4 +148,20 @@ void JSONExpression::esc(char val, pt::TextStream & stream, const FT & field_typ
 }
 
 
+void JSONExpression::esc(const pt::Space & space, pt::TextStream & stream, const FT & field_type)
+{
+	bool pretty_print = field_type.is_pretty_print();
+
+	if( field_type.is_space() )
+	{
+		pt::WTextStream tmp_stream;
+		space.serialize_to_space_stream(tmp_stream, pretty_print);
+		BaseExpression::esc(tmp_stream, stream, field_type);
+	}
+	else
+	{
+		space.serialize_to_json_stream(stream, pretty_print);
+	}
+}
+
 }
diff --git a/src/jsonexpression.h b/src/jsonexpression.h
index ebc78ca..df91520 100644
--- a/src/jsonexpression.h
+++ b/src/jsonexpression.h
@@ -73,6 +73,10 @@ private:
 
 	void before_field_value_string(const FT & field_type);
 	void after_field_value_string(const FT & field_type);
+	void before_field_value(const pt::Space &, const FT & field_type);
+	void after_field_value(const pt::Space &, const FT & field_type);
+
+	void esc(const pt::Space & space, pt::TextStream & stream, const FT & field_type);
 
 };