Rule for +/- (prefix) unary operator

[kevinresol]

Mainly for negative numbers such as -1. It should be differentiated from the arithmetic operator which is a binary operator.

{
    "type": "OperatorWhitespace",
    "props": {
        "severity": "WARNING",
        "assignOpPolicy": "around",
        "unaryOpPolicy": "none",
        "ternaryOpPolicy": "around",
        "arithmeticOpPolicy": "around",
        "compareOpPolicy": "around",
        "bitwiseOpPolicy": "around",
        "boolOpPolicy": "around",
        "intervalOpPolicy": "none",
        "arrowPolicy": "around",
        "functionArgPolicy": "none"
    }
}

[AlexHaxe]

Negative numbers are constants with a negative value, so OperatorWhitespace does not apply.
It also skips negative prefixes of variables / expressions, because technically those would show up as arithmetic operators, but applying arithmeticOpPolicy doesn't make sense for them.

It's possible to expand unaryOpPolicy to work on those prefixes, but that would only enforce "inner" spacing.

[kevinresol]

Well maybe this is a bug then:

class Main {
  static function main() {
    switch int() {
      case -1:
      default:
    }
  }
  static function int() return 123;
}

{
    "type": "OperatorWhitespace",
    "props": {
        "severity": "WARNING",
        "assignOpPolicy": "around",
        "unaryOpPolicy": "none",
        "ternaryOpPolicy": "around",
        "arithmeticOpPolicy": "around",
        "compareOpPolicy": "around",
        "bitwiseOpPolicy": "around",
        "boolOpPolicy": "around",
        "intervalOpPolicy": "none",
        "arrowPolicy": "around",
        "functionArgPolicy": "none"
    }
}

src/Main.hx:4: characters 11-12 : Warning: OperatorWhitespace policy "around" violated by "-"