Indicate whether this is a binary or ternary operator.

Indicates whether it is a complex operation compared to another. expr is *not* considered complex if it is not a call expression or has less than two

isSamePrecedence indicates whether the precedence of the input operator is the same as the precedence of the (possible) operation represented in the i

Implementations based on `google/cel-go`'s unparser https://github.com/google/cel-go/blob/master/parser/unparser.go

bytesToOctets converts byte sequences to a string using a three digit octal encoded value per byte.

Indicates whether the expr is a complex operator, i.e., a call expression with 2 or more arguments.

isLeftRecursive indicates whether the parser resolves the call in a left-recursive manner as this can have an effect of how parentheses affect the ord

isLowerPrecedence indicates whether the precedence of the input operator is lower precedence than the (possible) operation represented in the input Ex