Refactored Caching, Refactored BnfNodeParser, Introduced Sphinx

src/printer/Formatter.py

@@ -4,6 +4,11 @@ from printer.FormatInstructions import FormatDetailDesc, FormatDetailType, Forma
 class Formatter:
 
     def __init__(self):
+        self.custom_l_formats = None
+        self.custom_d_formats = None
+        self.reset_formats()
+
+    def reset_formats(self):
         self.custom_l_formats = {}
         self.custom_d_formats = []
 

src/printer/SheerkaPrinter.py

@@ -29,10 +29,15 @@ class SheerkaPrinter:
         self.sheerka = sheerka
         self.formatter = Formatter()
         self.formatter.register_format_l(EXECUTION_CONTEXT_CLASS, "[{id:3}]  %tab%{desc} ({status})")
+        self.custom_concepts_printers = None
+        self.reset()
+
+    def reset(self):
         self.custom_concepts_printers = {
             str(BuiltinConcepts.EXPLANATION): self.print_explanation,
             str(BuiltinConcepts.RETURN_VALUE): self.print_return_value,
         }
+        self.formatter.reset_formats()
 
     def register_custom_printer(self, concept, custom_format):
         key = concept.key if isinstance(concept, Concept) else concept