boolean (@NotNull GrBinaryExpression binaryExp1, @NotNull GrBinaryExpression binaryExp2) { final IElementType sign1 = binaryExp1.getOperationTokenType(); final IElementType sign2 = binaryExp2.getOperationTokenType(); if (sign1 != sign2) { return false; } final GrExpression lhs1 = binaryExp1.getLeftOperand(); final GrExpression lhs2 = binaryExp2.getLeftOperand(); final GrExpression rhs1 = binaryExp1.getRightOperand(); final GrExpression rhs2 = binaryExp2.getRightOperand(); return expressionsAreEquivalent(lhs1, lhs2) && expressionsAreEquivalent(rhs1, rhs2); }