package dotty.tools.dotc

import util.Chars._
import core.Names.Name
import core.StdNames.nme
import core.NameOps._

package object parsing {

  def precedence(operator: Name): Int =
    if (operator eq nme.ERROR) -1
    else {
      val firstCh = operator.firstPart.head
      if (isScalaLetter(firstCh)) 1
      else if (operator.isOpAssignmentName) 0
      else firstCh match {
        case '|' => 2
        case '^' => 3
        case '&' => 4
        case '=' | '!' => 5
        case '<' | '>' => 6
        case ':' => 7
        case '+' | '-' => 8
        case '*' | '/' | '%' => 9
        case _ => 10
      }
    }

  def minPrec = 0
  def minInfixPrec = 1
  def maxPrec = 11

}