lib/textpow.rb in textpow1x-1.1.0 vs lib/textpow.rb in textpow1x-1.2.0

@@ -9,7 +9,42 @@
   class ParsingError < Exception; end
 
   def self.syntax_path
     File.join(File.dirname(__FILE__), 'textpow', 'syntax')
   end
+
+  @@syntax = {}
+  def self.syntax(syntax_name)
+    syntax_name = syntax_name.downcase
+    if @@syntax.has_key?(syntax_name)
+      @@syntax[syntax_name]
+    else
+      @@syntax[syntax_name] = uncached_syntax(syntax_name)
+    end
+  end
+
+private
+
+  def self.uncached_syntax(name)
+    path = (
+      find_syntax_by_path(name) ||
+      find_syntax_by_scope_name(name) ||
+      find_syntax_by_fuzzy_name(name)
+    )
+    SyntaxNode.load(path) if path
+  end
+
+  def self.find_syntax_by_scope_name(name)
+    path = File.join(syntax_path, "#{name}.syntax")
+    path if File.exist?(path)
+  end
+
+  def self.find_syntax_by_fuzzy_name(name)
+    path = Dir.glob(File.join(syntax_path, "*.#{name}.*")).sort_by(&:size).first
+    path if path and File.exist?(path)
+  end
+
+  def self.find_syntax_by_path(path)
+    path if File.exist?(path)
+  end
 end