Incorrect behavior of ‘==’ operator in IF() expression for Array typed variable

[karimall72]

In IF() expression, operators made up of 2 characters behave badly for an Array typed variable :

EvaluationValue resultKO = new Expression("IF(TAB[1] == 2, 2, 0)")
                                                   .with("TAB", List.of(1, 2))
                                                   .evaluate();

This leads to the Exception: Unexpected token after infix operator
Same behavior for >=, <=

But simple = operator works fine:

EvaluationValue resultOK = new Expression("IF(TAB[1] = 2, 2, 0)")
                                                   .with("TAB", List.of(1, 2))
                                                   .evaluate();

And == operator works fine for “simple” variable:

EvaluationValue resultOther = new Expression("IF(x == 2, 2, 0)")
                                                       .with("x", 2)
                                                       .evaluate();

!= operator is not ok with Array:

EvaluationValue resultKO = new Expression("IF(TAB[1] != 2, 0, 1)")
                                                    .with("TAB", List.of(1, 2))
                                                    .evaluate();

This leads to the Exception: Undefined operator '!'
But it is OK for “simple” variable (x).