Huge refactoring

Do not create huge strings
Let Row inherit from SimpleTypedList
Optimized sanitizing
Optimized validation
And more..

1 files changed, 6 insertions, 6 deletions

diff --git a/lib/axlsx/drawing/chart.rb b/lib/axlsx/drawing/chart.rb
index c1d408e6..1d6b9293 100644
--- a/lib/axlsx/drawing/chart.rb
+++ b/lib/axlsx/drawing/chart.rb
@@ -151,19 +151,19 @@ module Axlsx
     # @return [String]
     def to_xml_string(str = '')
       str << '<?xml version="1.0" encoding="UTF-8"?>'
-      str << '<c:chartSpace xmlns:c="' << XML_NS_C << '" xmlns:a="' << XML_NS_A << '" xmlns:r="' << XML_NS_R << '">'
-      str << '<c:date1904 val="' << Axlsx::Workbook.date1904.to_s << '"/>'
-      str << '<c:style val="' << style.to_s << '"/>'
+      str << ('<c:chartSpace xmlns:c="' << XML_NS_C << '" xmlns:a="' << XML_NS_A << '" xmlns:r="' << XML_NS_R << '">')
+      str << ('<c:date1904 val="' << Axlsx::Workbook.date1904.to_s << '"/>')
+      str << ('<c:style val="' << style.to_s << '"/>')
       str << '<c:chart>'
       @title.to_xml_string str
-      str << '<c:autoTitleDeleted val="' << (@title == nil).to_s << '"/>'
+      str << ('<c:autoTitleDeleted val="' << (@title == nil).to_s << '"/>')
       @view_3D.to_xml_string(str) if @view_3D
       str << '<c:floor><c:thickness val="0"/></c:floor>'
       str << '<c:sideWall><c:thickness val="0"/></c:sideWall>'
       str << '<c:backWall><c:thickness val="0"/></c:backWall>'
       str << '<c:plotArea>'
       str << '<c:layout/>'
-      yield str if block_given?
+      yield if block_given?
       str << '</c:plotArea>'
       if @show_legend
         str << '<c:legend>'
@@ -173,7 +173,7 @@ module Axlsx
         str << '</c:legend>'
       end
       str << '<c:plotVisOnly val="1"/>'
-      str << '<c:dispBlanksAs val="' << display_blanks_as.to_s << '"/>'
+      str << ('<c:dispBlanksAs val="' << display_blanks_as.to_s << '"/>')
       str << '<c:showDLblsOverMax val="1"/>'
       str << '</c:chart>'
       str << '<c:printSettings>'