Optimizations

src/markd/node.cr

@@ -49,7 +49,7 @@ module Markd
 
     property type : Type
 
-    property data = {} of String => DataValue
+    property(data) { {} of String => DataValue }
     property source_pos = { {1, 1}, {0, 0} }
     property text = ""
     property? open = true
@@ -126,7 +126,10 @@ module Markd
       io << " @type=" << @type
       io << " @parent=" << @parent if @parent
       io << " @next=" << @next if @next
-      io << " @data=" << @data if @data.size > 0
+
+      data = @data
+      io << " @data=" << data if data && !data.empty?
+
       io << ">"
       nil
     end

src/markd/parsers/block.cr

@@ -72,7 +72,7 @@ module Markd::Parser
       @lines = source.lines
       @line_size = @lines.size
       # ignore last blank line created by final newline
-      @line_size -= 1 if source[-1]? == '\n'
+      @line_size -= 1 if source.ends_with?('\n')
     end
 
     private def parse_blocks
@@ -132,7 +132,7 @@ module Markd::Parser
           end
         end
 
-        matched = RULES.values.each do |rule|
+        matched = RULES.each_value do |rule|
           case rule.match(self, container)
           when Rule::MatchValue::Container
             container = tip