io.shiftleft.semanticcpg.accesspath.AccessElement.scala Maven / Gradle / Ivy
package io.shiftleft.semanticcpg.accesspath
sealed abstract class AccessElement(name: String) extends Comparable[AccessElement] {
override def toString: String = name
def kind: Int
override def hashCode(): Int = kind + name.hashCode
override def compareTo(other: AccessElement): Int = {
this.kind.compareTo(other.kind) match {
case 0 => this.name.compareTo(other.toString)
case different => different
}
}
}
case class ConstantAccess(constant: String) extends AccessElement(constant) {
override def kind: Int = 0x01010101
}
case object VariableAccess extends AccessElement("?") {
override def kind: Int = 0x02020202
}
case object VariablePointerShift extends AccessElement("") {
override def kind: Int = 0x03030303
}
// this will eventually get an optional extent (how many bytes wide is the memory load/store)
case object IndirectionAccess extends AccessElement("*") {
override def kind: Int = 0x04040404
}
case object AddressOf extends AccessElement("&") {
override def kind: Int = 0x05050505
}
// this will eventually obtain an optional byteOffset
case class PointerShift(logicalOffset: Int) extends AccessElement(s"<$logicalOffset>") {
override def kind: Int = 0x06060606
}