Added is_lesser and is_greatest in SheerkaComparison

src/parsers/SyaNodeParser.py

@@ -6,6 +6,7 @@ from typing import List
 from core import builtin_helpers
 from core.builtin_concepts import BuiltinConcepts
 from core.concept import Concept, DEFINITION_TYPE_BNF
+from core.sheerka.services.SheerkaComparisonManager import SheerkaComparisonManager
 from core.sheerka.services.SheerkaExecute import ParserInput
 from core.tokenizer import Token, TokenKind, Tokenizer
 from parsers.BaseNodeParser import UnrecognizedTokensNode, ConceptNode, SourceCodeNode, SyaAssociativity, \
@@ -77,7 +78,7 @@ class SyaConceptDef:
     It gives the precedence and the associativity for the concept
     """
     concept: Concept
-    precedence: int = 0
+    precedence: int = SheerkaComparisonManager.DEFAULT_COMPARISON_VALUE
     associativity: SyaAssociativity = SyaAssociativity.Right
 
 
@@ -541,11 +542,6 @@ class InFixToPostFix:
         if stack.associativity == SyaAssociativity.No and current.associativity == SyaAssociativity.No:
             self._add_error(NoneAssociativeSequenceErrorNode(current.concept, stack_head.start, concept_node.start))
 
-        if not current.precedence:
-            # precedence is not set (None or zero)
-            # Do not apply any rule
-            return False
-
         if current.associativity == SyaAssociativity.Left and current.precedence <= stack.precedence:
             return True
 
@@ -947,6 +943,7 @@ class SyaNodeParser(BaseNodeParser):
     def _get_sya_concept_def(parser, concept):
         sya_concept_def = SyaConceptDef(concept)
         if concept.id in parser.sya_definitions:
+            # Manage when precedence and associativity are given in the unit tests
             sya_def = parser.sya_definitions.get(concept.id)
             if sya_def[0] is not None:
                 sya_concept_def.precedence = sya_def[0]