Implemented some enhancement requests

src/parsers/BaseNodeParser.py

@@ -8,7 +8,7 @@ from core.builtin_concepts import BuiltinConcepts
 from core.concept import VARIABLE_PREFIX, Concept, DEFINITION_TYPE_BNF, ConceptParts
 from core.rule import Rule
 from core.tokenizer import TokenKind, Token
-from parsers.BaseParser import Node, BaseParser, ErrorNode
+from parsers.BaseParser import Node, BaseParser, ParsingError
 
 DEBUG_COMPILED = True
 
@@ -19,7 +19,7 @@ class ChickenAndEggError(Exception):
 
 
 @dataclass
-class NoFirstTokenError(ErrorNode):
+class NoFirstTokenError(ParsingError):
     concept: Concept
     key: str
 
@@ -424,7 +424,7 @@ class SourceCodeWithConceptNode(LexerNode):
 
 
 @dataclass()
-class GrammarErrorNode(ErrorNode):
+class GrammarErrorNode(ParsingError):
     message: str