Scala example source code file (Flags.scala)
The Scala Flags.scala source codepackage scala.reflect
package generic
/** Flags set on Modifiers instances in the parsing stage.
*/
@deprecated("scala.reflect.generic will be removed", "2.9.1") class ModifierFlags {
final val IMPLICIT = 0x00000200
final val FINAL = 0x00000020
final val PRIVATE = 0x00000004
final val PROTECTED = 0x00000001
final val SEALED = 0x00000400
final val OVERRIDE = 0x00000002
final val CASE = 0x00000800
final val ABSTRACT = 0x00000008 // abstract class, or used in conjunction with abstract override.
// Note difference to DEFERRED!
final val DEFERRED = 0x00000010 // was `abstract' for members | trait is virtual
final val INTERFACE = 0x00000080 // symbol is an interface (i.e. a trait which defines only abstract methods)
final val MUTABLE = 0x00001000 // symbol is a mutable variable.
final val PARAM = 0x00002000 // symbol is a (value or type) parameter to a method
final val COVARIANT = 0x00010000 // symbol is a covariant type variable
final val BYNAMEPARAM = 0x00010000 // parameter is by name
final val CONTRAVARIANT = 0x00020000 // symbol is a contravariant type variable
final val ABSOVERRIDE = 0x00040000 // combination of abstract & override
final val LOCAL = 0x00080000 // symbol is local to current class (i.e. private[this] or protected[this]
// pre: PRIVATE or PROTECTED are also set
final val JAVA = 0x00100000 // symbol was defined by a Java class
final val STATIC = 0x00800000 // static field, method or class
final val CASEACCESSOR = 0x01000000 // symbol is a case parameter (or its accessor)
final val TRAIT = 0x02000000 // symbol is a trait
final val DEFAULTPARAM = 0x02000000 // the parameter has a default value
final val PARAMACCESSOR = 0x20000000 // for field definitions generated for primary constructor
// parameters (no matter if it's a 'val' parameter or not)
// for parameters of a primary constructor ('val' or not)
// for the accessor methods generated for 'val' or 'var' parameters
final val LAZY = 0x80000000L // symbol is a lazy val. can't have MUTABLE unless transformed by typer
final val PRESUPER = 0x2000000000L // value is evaluated before super call
final val DEFAULTINIT = 0x20000000000L// symbol is initialized to the default value: used by -Xcheckinit
// Overridden.
def flagToString(flag: Long): String = ""
}
object ModifierFlags extends ModifierFlags
@deprecated("scala.reflect.generic will be removed", "2.9.1") class Flags extends ModifierFlags {
final val METHOD = 0x00000040 // a method
final val MODULE = 0x00000100 // symbol is module or class implementing a module
final val PACKAGE = 0x00004000 // symbol is a java package
final val CAPTURED = 0x00010000 // variable is accessed from nested function. Set by LambdaLift.
final val LABEL = 0x00020000 // method symbol is a label. Set by TailCall
final val INCONSTRUCTOR = 0x00020000 // class symbol is defined in this/superclass constructor.
final val SYNTHETIC = 0x00200000 // symbol is compiler-generated
final val STABLE = 0x00400000 // functions that are assumed to be stable
// (typically, access methods for valdefs)
// or classes that do not contain abstract types.
final val BRIDGE = 0x04000000 // function is a bridge method. Set by Erasure
final val ACCESSOR = 0x08000000 // a value or variable accessor (getter or setter)
final val SUPERACCESSOR = 0x10000000 // a super accessor
final val MODULEVAR = 0x40000000 // for variables: is the variable caching a module value
final val IS_ERROR = 0x100000000L // symbol is an error symbol
final val OVERLOADED = 0x200000000L // symbol is overloaded
final val LIFTED = 0x400000000L // class has been lifted out to package level
// local value has been lifted out to class level
// todo: make LIFTED = latePRIVATE?
final val MIXEDIN = 0x800000000L // term member has been mixed in
final val EXISTENTIAL = 0x800000000L // type is an existential parameter or skolem
final val EXPANDEDNAME = 0x1000000000L // name has been expanded with class suffix
final val IMPLCLASS = 0x2000000000L // symbol is an implementation class
final val TRANS_FLAG = 0x4000000000L // transient flag guaranteed to be reset after each phase.
final val LOCKED = 0x8000000000L // temporary flag to catch cyclic dependencies
final val SPECIALIZED = 0x10000000000L// symbol is a generated specialized member
final val VBRIDGE = 0x40000000000L// symbol is a varargs bridge
final val VARARGS = 0x80000000000L// symbol is a Java-style varargs method
final val TRIEDCOOKING = 0x100000000000L // ``Cooking'' has been tried on this symbol
// A Java method's type is ``cooked'' by transforming raw types to existentials
// pickling and unpickling of flags
// The flags from 0x001 to 0x800 are different in the raw flags
// and in the pickled format.
private final val IMPLICIT_PKL = (1 << 0)
private final val FINAL_PKL = (1 << 1)
private final val PRIVATE_PKL = (1 << 2)
private final val PROTECTED_PKL = (1 << 3)
private final val SEALED_PKL = (1 << 4)
private final val OVERRIDE_PKL = (1 << 5)
private final val CASE_PKL = (1 << 6)
private final val ABSTRACT_PKL = (1 << 7)
private final val DEFERRED_PKL = (1 << 8)
private final val METHOD_PKL = (1 << 9)
private final val MODULE_PKL = (1 << 10)
private final val INTERFACE_PKL = (1 << 11)
private final val PKL_MASK = 0x00000FFF
final val PickledFlags: Long = 0xFFFFFFFFL
private def rawPickledCorrespondence = Array(
(IMPLICIT, IMPLICIT_PKL),
(FINAL, FINAL_PKL),
(PRIVATE, PRIVATE_PKL),
(PROTECTED, PROTECTED_PKL),
(SEALED, SEALED_PKL),
(OVERRIDE, OVERRIDE_PKL),
(CASE, CASE_PKL),
(ABSTRACT, ABSTRACT_PKL),
(DEFERRED, DEFERRED_PKL),
(METHOD, METHOD_PKL),
(MODULE, MODULE_PKL),
(INTERFACE, INTERFACE_PKL)
)
private val rawFlags: Array[Int] = rawPickledCorrespondence map (_._1)
private val pickledFlags: Array[Int] = rawPickledCorrespondence map (_._2)
// unused in 2.9.1: left to satisfy mima complaint about missing f$1
private def mkCorrespondenceArray(correspondence: List[(Int, Int)]) = {
def f(flags: Int): Int = {
correspondence.foldLeft(0) {
case (result, (oldFlag, newFlag)) =>
if ((flags & oldFlag) != 0) result | newFlag
else result
}
}
0 to PKL_MASK map f toArray
}
private def r2p(flags: Int): Int = {
var result = 0
var i = 0
while (i < rawFlags.length) {
if ((flags & rawFlags(i)) != 0)
result |= pickledFlags(i)
i += 1
}
result
}
private def p2r(flags: Int): Int = {
var result = 0
var i = 0
while (i < rawFlags.length) {
if ((flags & pickledFlags(i)) != 0)
result |= rawFlags(i)
i += 1
}
result
}
// Generated by mkFlagToStringMethod() at Mon Oct 11 10:07:29 PDT 2010
@annotation.switch override def flagToString(flag: Long): String = flag match {
case PROTECTED => "protected" // (1L << 0)
case OVERRIDE => "override" // (1L << 1)
case PRIVATE => "private" // (1L << 2)
case ABSTRACT => "abstract" // (1L << 3)
case DEFERRED => "<deferred>" // (1L << 4)
case FINAL => "final" // (1L << 5)
case METHOD => "<method>" // (1L << 6)
case INTERFACE => "<interface>" // (1L << 7)
case MODULE => "<module>" // (1L << 8)
case IMPLICIT => "implicit" // (1L << 9)
case SEALED => "sealed" // (1L << 10)
case CASE => "case" // (1L << 11)
case MUTABLE => "<mutable>" // (1L << 12)
case PARAM => "<param>" // (1L << 13)
case PACKAGE => "<package>" // (1L << 14)
case 0x8000L => "" // (1L << 15)
case BYNAMEPARAM => "<bynameparam/captured/covariant>" // (1L << 16)
case CONTRAVARIANT => "<contravariant/inconstructor/label>" // (1L << 17)
case ABSOVERRIDE => "absoverride" // (1L << 18)
case LOCAL => "<local>" // (1L << 19)
case JAVA => "<java>" // (1L << 20)
case SYNTHETIC => "<synthetic>" // (1L << 21)
case STABLE => "<stable>" // (1L << 22)
case STATIC => "<static>" // (1L << 23)
case CASEACCESSOR => "<caseaccessor>" // (1L << 24)
case DEFAULTPARAM => "<defaultparam/trait>" // (1L << 25)
case BRIDGE => "<bridge>" // (1L << 26)
case ACCESSOR => "<accessor>" // (1L << 27)
case SUPERACCESSOR => "<superaccessor>" // (1L << 28)
case PARAMACCESSOR => "<paramaccessor>" // (1L << 29)
case MODULEVAR => "<modulevar>" // (1L << 30)
case LAZY => "lazy" // (1L << 31)
case IS_ERROR => "<is_error>" // (1L << 32)
case OVERLOADED => "<overloaded>" // (1L << 33)
case LIFTED => "<lifted>" // (1L << 34)
case EXISTENTIAL => "<existential/mixedin>" // (1L << 35)
case EXPANDEDNAME => "<expandedname>" // (1L << 36)
case IMPLCLASS => "<implclass/presuper>" // (1L << 37)
case TRANS_FLAG => "<trans_flag>" // (1L << 38)
case LOCKED => "<locked>" // (1L << 39)
case SPECIALIZED => "<specialized>" // (1L << 40)
case DEFAULTINIT => "<defaultinit>" // (1L << 41)
case VBRIDGE => "<vbridge>" // (1L << 42)
case 0x80000000000L => "" // (1L << 43)
case 0x100000000000L => "" // (1L << 44)
case 0x200000000000L => "" // (1L << 45)
case 0x400000000000L => "" // (1L << 46)
case 0x800000000000L => "" // (1L << 47)
case 0x1000000000000L => "" // (1L << 48)
case 0x2000000000000L => "" // (1L << 49)
case 0x4000000000000L => "" // (1L << 50)
case 0x8000000000000L => "" // (1L << 51)
case 0x10000000000000L => "" // (1L << 52)
case 0x20000000000000L => "" // (1L << 53)
case 0x40000000000000L => "" // (1L << 54)
case 0x80000000000000L => "" // (1L << 55)
case 0x100000000000000L => "" // (1L << 56)
case 0x200000000000000L => "" // (1L << 57)
case 0x400000000000000L => "" // (1L << 58)
case 0x800000000000000L => "" // (1L << 59)
case 0x1000000000000000L => "" // (1L << 60)
case 0x2000000000000000L => "" // (1L << 61)
case 0x4000000000000000L => "" // (1L << 62)
case 0x8000000000000000L => "" // (1L << 63)
case _ => ""
}
def flagsToString(flags: Long, privateWithin: String): String = {
var f = flags
val pw =
if (privateWithin == "") {
if ((flags & (PRIVATE | LOCAL)) == (PRIVATE | LOCAL).toLong) {
f = f & ~(PRIVATE | LOCAL)
"private[this]"
} else if ((flags & (PROTECTED | LOCAL)) == (PROTECTED | LOCAL).toLong) {
f = f & ~(PROTECTED | LOCAL)
"protected[this]"
} else {
""
}
} else if ((f & PROTECTED) != 0L) {
f = f & ~PROTECTED
"protected[" + privateWithin + "]"
} else {
"private[" + privateWithin + "]"
}
List(flagsToString(f), pw) filterNot (_ == "") mkString " "
}
def flagsToString(flags: Long): String =
pickledListOrder map (mask => flagToString(flags & mask)) filterNot (_ == "") mkString " "
def rawFlagsToPickled(flags: Long): Long =
(flags & ~PKL_MASK) | r2p(flags.toInt & PKL_MASK)
def pickledToRawFlags(pflags: Long): Long =
(pflags & ~PKL_MASK) | p2r(pflags.toInt & PKL_MASK)
// List of the raw flags, in pickled order
protected val pickledListOrder: List[Long] = {
val all = 0 to 62 map (1L << _)
val front = rawFlags map (_.toLong)
front.toList ++ (all filterNot (front contains _))
}
}
object Flags extends Flags
Other Scala examples (source code examples)Here is a short list of links related to this Scala Flags.scala source code file: |
The search page
Other Scala source code examples at this package level
Click here to learn more about this project
