Added SyaNodeParser (finally, after one month)

tests/parsers/test_MultipleConceptsParser.py

@@ -3,7 +3,8 @@ import pytest
 from core.builtin_concepts import ParserResultConcept, BuiltinConcepts
 from core.concept import Concept
 from core.tokenizer import Tokenizer, TokenKind, Token
-from parsers.ConceptLexerParser import ConceptLexerParser, ConceptNode, Sequence, cnode, utnode, scnode, SourceCodeNode
+from parsers.BaseNodeParser import cnode, scnode, utnode, SourceCodeNode
+from parsers.BnfNodeParser import BnfNodeParser, ConceptNode, Sequence
 from parsers.MultipleConceptsParser import MultipleConceptsParser
 from parsers.PythonParser import PythonNode
 
@@ -11,7 +12,7 @@ from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka
 
 
 def get_return_value(context, grammar, expression):
-    parser = ConceptLexerParser()
+    parser = BnfNodeParser()
     parser.initialize(context, grammar)
 
     ret_val = parser.parse(context, expression)