def test_binops(self):
binop1 = ["1000", ">", "100.0"]
binop_node1 = AST.GTNode(AST.IntNode(int(binop1[0])),
AST.DecimalNode(Decimal(binop1[2])))
self.validate_node(self.exp_parser, "".join(binop1), binop_node1)
binop2 = binop1 + ["==", "true"]
binop_node2 = AST.EqNode(binop_node1, AST.BoolNode(True))
self.validate_node(self.exp_parser, "".join(binop2), binop_node2)
# (100 + var) * (true) + "String"
lit_bool = AST.BoolNode(True)
lit_int = AST.IntNode(int("100"))
lit_var = AST.VarNode("var")
lit_string = AST.StringNode("String")
binop_node3 = AST.AddNode(lit_int, lit_var)
binop_node3 = AST.MulNode(binop_node3, lit_bool)
binop_node3 = AST.AddNode(binop_node3, lit_string)
self.validate_node(self.exp_parser, "(100 + var) * true + \"String\"",
binop_node3)
self.check_parse_exception(self.exp_parser, '20 +', pp.ParseException)
self.check_parse_exception(self.exp_parser, '20 ** 30',
pp.ParseException)
self.check_parse_exception(self.exp_parser, '30 // 40',
pp.ParseException)
def test_expression_combinations(self):
# !(5.0 + +10 / var1 / 2 - !var2 && (19. * .12) || false)
# = invalid eq but is parseable.
int1 = AST.IntNode(int("10"))
int2 = AST.IntNode(int("2"))
dec1 = AST.DecimalNode(Decimal("5.0"))
dec2 = AST.DecimalNode(Decimal("19."))
dec3 = AST.DecimalNode(Decimal(".12"))
var1 = AST.VarNode("var1")
var2 = AST.VarNode("var2")
bool1 = AST.BoolNode(False)
# First prefix +, then division
expr = AST.DivNode(AST.PlusNode(int1), var1)
expr = AST.DivNode(expr, int2)
# Secondly + and -
expr = AST.AddNode(dec1, expr)
expr = AST.SubNode(expr, AST.NegNode(var2))
# Thirdly &&, last || and the very last !
expr = AST.AndNode(expr, AST.MulNode(dec2, dec3))
expr = AST.NegNode(AST.OrNode(expr, bool1))
string_expr = "!(5.0 + +10 / var1 / 2 - !var2 && (19. * .12) || false)"
self.validate_node(self.exp_parser, string_expr, expr)