Create expression2 precendence level (relation operators)

smnp/ast/node/expression.py

@@ -8,10 +8,12 @@ from smnp.token.type import TokenType
 class Expression(Valuable):
     pass
 
-
 ExpressionParser = Parser.leftAssociativeOperatorParser(TermParser, [TokenType.PLUS, TokenType.MINUS], TermParser,
                                                         lambda left, op, right: Expression.withValue(BinaryOperator.withValues(left, op, right)))
 
+Expression2Parser = Parser.leftAssociativeOperatorParser(ExpressionParser, [TokenType.RELATION], ExpressionParser,
+                                                         lambda left, op, right: Expression.withValue(BinaryOperator.withValues(left, op, right)))
+
 #
 # class ExpressionNode(Node):
 #     def __init__(self, pos):

smnp/ast/node/program.py

@@ -1,4 +1,4 @@
-from smnp.ast.node.expression import ExpressionParser
+from smnp.ast.node.expression import Expression2Parser
 from smnp.ast.node.model import Node, ParseResult
 from smnp.ast.parser import Parser
 
@@ -15,7 +15,7 @@ def parse(input):
 
 
             #TODO -> temporary (to remove):
-            ExpressionParser
+            Expression2Parser
         )(input)
 
         if result.result: