import Foundation

#if canImport(Darwin) && !SWIFT_PACKAGE
@objcMembers
public class _CallsiteBase: NSObject {}
#else
public class _CallsiteBase: NSObject {}
#endif

/**
    An object encapsulating the file and line number at which
    a particular example is defined.
*/
final public class Callsite: _CallsiteBase {
    /**
        The absolute path of the file in which an example is defined.
    */
    public let file: String

    /**
        The line number on which an example is defined.
    */
    public let line: UInt

    internal init(file: String, line: UInt) {
        self.file = file
        self.line = line
    }
}

extension Callsite {
    /**
        Returns a boolean indicating whether two Callsite objects are equal.
        If two callsites are in the same file and on the same line, they must be equal.
    */
    @nonobjc public static func == (lhs: Callsite, rhs: Callsite) -> Bool {
        return lhs.file == rhs.file && lhs.line == rhs.line
    }
}