Scala example source code file (StdNames.scala)
The Scala StdNames.scala source code/* NSC -- new Scala compiler
* Copyright 2005-2011 LAMP/EPFL
* @author Martin Odersky
*/
package scala.tools.nsc
package symtab
import scala.collection.immutable
trait StdNames extends reflect.generic.StdNames with NameManglers {
self: SymbolTable =>
/** This should be the first trait in the linearization. */
trait CompilerKeywords {
private var kws: Set[TermName] = Set()
private def kw(s: String): TermName = {
val result = newTermName(s)
kws = kws + result
result
}
final val ABSTRACTkw: TermName = kw("abstract")
final val CASEkw: TermName = kw("case")
final val CLASSkw: TermName = kw("class")
final val CATCHkw: TermName = kw("catch")
final val DEFkw: TermName = kw("def")
final val DOkw: TermName = kw("do")
final val ELSEkw: TermName = kw("else")
final val EXTENDSkw: TermName = kw("extends")
final val FALSEkw: TermName = kw("false")
final val FINALkw: TermName = kw("final")
final val FINALLYkw: TermName = kw("finally")
final val FORkw: TermName = kw("for")
final val FORSOMEkw: TermName = kw("forSome")
final val IFkw: TermName = kw("if")
final val IMPLICITkw: TermName = kw("implicit")
final val IMPORTkw: TermName = kw("import")
final val LAZYkw: TermName = kw("lazy")
final val MATCHkw: TermName = kw("match")
final val NEWkw: TermName = kw("new")
final val NULLkw: TermName = kw("null")
final val OBJECTkw: TermName = kw("object")
final val OVERRIDEkw: TermName = kw("override")
final val PACKAGEkw: TermName = kw("package")
final val PRIVATEkw: TermName = kw("private")
final val PROTECTEDkw: TermName = kw("protected")
final val RETURNkw: TermName = kw("return")
final val SEALEDkw: TermName = kw("sealed")
final val SUPERkw: TermName = kw("super")
final val THISkw: TermName = kw("this")
final val THROWkw: TermName = kw("throw")
final val TRAITkw: TermName = kw("trait")
final val TRUEkw: TermName = kw("true")
final val TRYkw: TermName = kw("try")
final val TYPEkw: TermName = kw("type")
final val VALkw: TermName = kw("val")
final val VARkw: TermName = kw("var")
final val WITHkw: TermName = kw("with")
final val WHILEkw: TermName = kw("while")
final val YIELDkw: TermName = kw("yield")
final val DOTkw: TermName = kw(".")
final val USCOREkw: TermName = kw("_")
final val COLONkw: TermName = kw(":")
final val EQUALSkw: TermName = kw("=")
final val ARROWkw: TermName = kw("=>")
final val LARROWkw: TermName = kw("<-")
final val SUBTYPEkw: TermName = kw("<:")
final val VIEWBOUNDkw: TermName = kw("<%")
final val SUPERTYPEkw: TermName = kw(">:")
final val HASHkw: TermName = kw("#")
final val ATkw: TermName = kw("@")
final val keywords = {
val result = kws.toSet
kws = null
result
}
final val javaKeywords = new JavaKeywords()
}
trait CompilerCommonNames extends LibraryCommonNames {
// value types are all used as terms as well
final val Boolean: NameType = "Boolean"
final val Byte: NameType = "Byte"
final val Char: NameType = "Char"
final val Double: NameType = "Double"
final val Float: NameType = "Float"
final val Int: NameType = "Int"
final val Long: NameType = "Long"
final val Short: NameType = "Short"
final val Unit: NameType = "Unit"
final val ScalaValueNames: scala.List[NameType] =
scala.List(Byte, Char, Short, Int, Long, Float, Double, Boolean, Unit)
// types whose companions we utilize
final val Array: NameType = "Array"
final val List: NameType = "List"
final val Seq: NameType = "Seq"
final val Symbol: NameType = "Symbol"
// fictions we use as both types and terms
final val ERROR: NameType = "<error>"
final val NO_NAME: NameType = "<none>" // formerly NOSYMBOL
final val WILDCARD: NameType = "_"
}
trait CompilerTypeNames extends CompilerCommonNames {
final val BYNAME_PARAM_CLASS_NAME: NameType = "<byname>"
final val EQUALS_PATTERN_NAME: NameType = "<equals>"
final val JAVA_REPEATED_PARAM_CLASS_NAME: NameType = "<repeated...>"
final val LOCAL_CHILD: NameType = "<local child>"
final val REPEATED_PARAM_CLASS_NAME: NameType = "<repeated>"
final val WILDCARD_STAR: NameType = "_*"
final val Any: NameType = "Any"
final val AnyRef: NameType = "AnyRef"
final val AnyVal: NameType = "AnyVal"
final val Nothing: NameType = "Nothing"
final val Null: NameType = "Null"
final val Object: NameType = "Object"
final val PartialFunction: NameType = "PartialFunction"
final val Product: NameType = "Product"
final val ScalaObject: NameType = "ScalaObject"
final val Serializable: NameType = "Serializable"
final val Singleton: NameType = "Singleton"
final val String: NameType = "String"
final val Throwable: NameType = "Throwable"
// Annotation types
final val AnnotationDefaultATTR: NameType = "AnnotationDefault"
final val BridgeATTR: NameType = "Bridge"
final val ClassfileAnnotationATTR: NameType = "RuntimeInvisibleAnnotations" // RetentionPolicy.CLASS. Currently not used (Apr 2009).
final val CodeATTR: NameType = "Code"
final val ConstantValueATTR: NameType = "ConstantValue"
final val DeprecatedATTR: NameType = "Deprecated"
final val ExceptionsATTR: NameType = "Exceptions"
final val InnerClassesATTR: NameType = "InnerClasses"
final val JacoMetaATTR: NameType = "JacoMeta"
final val LineNumberTableATTR: NameType = "LineNumberTable"
final val LocalVariableTableATTR: NameType = "LocalVariableTable"
final val RuntimeAnnotationATTR: NameType = "RuntimeVisibleAnnotations" // RetentionPolicy.RUNTIME
final val RuntimeParamAnnotationATTR: NameType = "RuntimeVisibleParameterAnnotations" // RetentionPolicy.RUNTIME (annotations on parameters)
final val ScalaATTR: NameType = "Scala"
final val ScalaSignatureATTR: NameType = "ScalaSig"
final val SignatureATTR: NameType = "Signature"
final val SourceFileATTR: NameType = "SourceFile"
final val SyntheticATTR: NameType = "Synthetic"
}
trait CompilerTermNames extends CompilerKeywords with CompilerCommonNames {
// Compiler internal names
val ANYNAME: NameType = "<anyname>"
val CONSTRUCTOR: NameType = "<init>"
val FAKE_LOCAL_THIS: NameType = "this$"
val INITIALIZER: NameType = CONSTRUCTOR // Is this buying us something?
val MIXIN_CONSTRUCTOR: NameType = "$init$"
val MODULE_INSTANCE_FIELD: NameType = "MODULE$"
val OUTER: NameType = "$outer"
val OUTER_LOCAL: NameType = "$outer " // note the space
val SELF: NameType = "$this"
val SPECIALIZED_INSTANCE: NameType = "specInstance$"
val STAR: NameType = "*"
val THIS: NameType = "_$this"
final val Nil: NameType = "Nil"
final val Predef: NameType = "Predef"
final val ScalaRunTime: NameType = "ScalaRunTime"
final val Some: NameType = "Some"
// Compiler utilized names
// val productElementName: NameType = "productElementName"
val TYPE_ : NameType = "TYPE"
val add_ : NameType = "add"
val apply: NameType = "apply"
val arrayValue: NameType = "arrayValue"
val arraycopy: NameType = "arraycopy"
val asInstanceOf_ : NameType = "asInstanceOf"
val assert_ : NameType = "assert"
val assume_ : NameType = "assume"
val box: NameType = "box"
val bytes: NameType = "bytes"
val canEqual_ : NameType = "canEqual"
val checkInitialized: NameType = "checkInitialized"
val classOf: NameType = "classOf"
val clone_ : NameType = if (forMSIL) "MemberwiseClone" else "clone" // sn.OClone causes checkinit failure
val conforms: NameType = "conforms"
val copy: NameType = "copy"
val delayedInit: NameType = "delayedInit"
val delayedInitArg: NameType = "delayedInit$body"
val drop: NameType = "drop"
val elem: NameType = "elem"
val eq: NameType = "eq"
val equals_ : NameType = if (forMSIL) "Equals" else "equals"
val error: NameType = "error"
val ex: NameType = "ex"
val false_ : NameType = "false"
val filter: NameType = "filter"
val finalize_ : NameType = if (forMSIL) "Finalize" else "finalize"
val find_ : NameType = "find"
val flatMap: NameType = "flatMap"
val foreach: NameType = "foreach"
val genericArrayOps: NameType = "genericArrayOps"
val get: NameType = "get"
val hasNext: NameType = "hasNext"
val hashCode_ : NameType = if (forMSIL) "GetHashCode" else "hashCode"
val hash_ : NameType = "hash"
val head: NameType = "head"
val identity: NameType = "identity"
val inlinedEquals: NameType = "inlinedEquals"
val applyDynamic: NameType = "applyDynamic"
val isArray: NameType = "isArray"
val isDefinedAt: NameType = "isDefinedAt"
val isEmpty: NameType = "isEmpty"
val isInstanceOf_ : NameType = "isInstanceOf"
val java: NameType = "java"
val lang: NameType = "lang"
val length: NameType = "length"
val lengthCompare: NameType = "lengthCompare"
val lift_ : NameType = "lift"
val main: NameType = "main"
val map: NameType = "map"
val ne: NameType = "ne"
val newArray: NameType = "newArray"
val next: NameType = "next"
val notifyAll_ : NameType = "notifyAll"
val notify_ : NameType = "notify"
val null_ : NameType = "null"
val ofDim: NameType = "ofDim"
val productArity: NameType = "productArity"
val productElement: NameType = "productElement"
val productPrefix: NameType = "productPrefix"
val readResolve: NameType = "readResolve"
val sameElements: NameType = "sameElements"
val scala_ : NameType = "scala"
val self: NameType = "self"
val setAccessible: NameType = "setAccessible"
val synchronized_ : NameType = "synchronized"
val tail: NameType = "tail"
val this_ : NameType = "this"
val throw_ : NameType = "throw"
val toArray: NameType = "toArray"
val toList: NameType = "toList"
val toSeq: NameType = "toSeq"
val toString_ : NameType = if (forMSIL) "ToString" else "toString"
val true_ : NameType = "true"
val unapply: NameType = "unapply"
val unapplySeq: NameType = "unapplySeq"
val unbox: NameType = "unbox"
val update: NameType = "update"
val value: NameType = "value"
val view_ : NameType = "view"
val wait_ : NameType = "wait"
val withFilter: NameType = "withFilter"
val wrapRefArray: NameType = "wrapRefArray"
val zip: NameType = "zip"
// unencoded operators
object raw {
final val AMP : NameType = "&"
final val BANG : NameType = "!"
final val BAR : NameType = "|"
final val DOLLAR: NameType = "$"
final val GE: NameType = ">="
final val LE: NameType = "<="
final val MINUS: NameType = "-"
final val NE: NameType = "!="
final val PLUS : NameType = "+"
final val SLASH: NameType = "/"
final val STAR : NameType = "*"
final val TILDE: NameType = "~"
final val isUnary: Set[Name] = Set(MINUS, PLUS, TILDE, BANG)
}
// value-conversion methods
val toByte: NameType = "toByte"
val toShort: NameType = "toShort"
val toChar: NameType = "toChar"
val toInt: NameType = "toInt"
val toLong: NameType = "toLong"
val toFloat: NameType = "toFloat"
val toDouble: NameType = "toDouble"
}
object tpnme extends CompilerTypeNames with LibraryTypeNames with TypeNameMangling {
type NameType = TypeName
implicit def createNameType(name: String): TypeName = newTypeName(name)
}
val javanme = nme.javaKeywords
object nme extends CompilerTermNames with LibraryTermNames with TermNameMangling {
type NameType = TermName
implicit def createNameType(name: String): TermName = newTermName(name)
/** Translate a String into a list of simple TypeNames and TermNames.
* In all segments before the last, type/term is determined by whether
* the following separator char is '.' or '#'. In the last segment,
* the argument "assumeTerm" determines it. Examples:
*
* package foo {
* object Lorax { object Wog ; class Wog }
* class Lorax { object Zax ; class Zax }
* }
*
* f("foo.Lorax", true) == List("foo": Term, "Lorax": Term) // object Lorax
* f("foo.Lorax", false) == List("foo": Term, "Lorax": Type) // class Lorax
* f("Lorax.Wog", true) == List("Lorax": Term, "Wog": Term) // object Wog
* f("Lorax.Wog", false) == List("Lorax": Term, "Wog": Type) // class Wog
* f("Lorax#Zax", true) == List("Lorax": Type, "Zax": Term) // object Zax
* f("Lorax#Zax", false) == List("Lorax": Type, "Zax": Type) // class Zax
*
* Note that in actual scala syntax you cannot refer to object Zax without an
* instance of Lorax, so Lorax#Zax could only mean the type. One might think
* that Lorax#Zax.type would work, but this is not accepted by the parser.
* For the purposes of referencing that object, the syntax is allowed.
*/
def segments(name: String, assumeTerm: Boolean): List[Name] = {
def mkName(str: String, term: Boolean): Name =
if (term) newTermName(str) else newTypeName(str)
name.indexWhere(ch => ch == '.' || ch == '#') match {
// it's the last segment: the parameter tells us whether type or term
case -1 => if (name == "") scala.Nil else scala.List(mkName(name, assumeTerm))
// otherwise, we can tell based on whether '#' or '.' is the following char.
case idx =>
val (simple, div, rest) = (name take idx, name charAt idx, name drop (idx + 1))
mkName(simple, div == '.') :: segments(rest, assumeTerm)
}
}
private def bitmapName(n: Int, suffix: String): TermName =
newTermName(BITMAP_PREFIX + suffix + n)
/** The name of bitmaps for initialized (public or protected) lazy vals. */
def bitmapName(n: Int): TermName = bitmapName(n, "")
/** The name of bitmaps for initialized transient lazy vals. */
def bitmapNameForTransient(n: Int): TermName = bitmapName(n, "trans$")
/** The name of bitmaps for initialized private lazy vals. */
def bitmapNameForPrivate(n: Int): TermName = bitmapName(n, "priv$")
/** The name of bitmaps for checkinit values */
def bitmapNameForCheckinit(n: Int): TermName = bitmapName(n, "init$")
/** The name of bitmaps for checkinit values that have transient flag*/
def bitmapNameForCheckinitTransient(n: Int): TermName = bitmapName(n, "inittrans$")
/** Base strings from which synthetic names are derived. */
val BITMAP_PREFIX = "bitmap$"
val CHECK_IF_REFUTABLE_STRING = "check$ifrefutable$"
val DEFAULT_GETTER_STRING = "$default$"
val DO_WHILE_PREFIX = "doWhile$"
val EQEQ_LOCAL_VAR = "eqEqTemp$"
val EVIDENCE_PARAM_PREFIX = "evidence$"
val EXCEPTION_RESULT_PREFIX = "exceptionResult"
val INTERPRETER_IMPORT_WRAPPER = "$iw"
val INTERPRETER_LINE_PREFIX = "line"
val INTERPRETER_VAR_PREFIX = "res"
val INTERPRETER_WRAPPER_SUFFIX = "$object"
val WHILE_PREFIX = "while$"
def getCause = sn.GetCause
def getClass_ = sn.GetClass
def getMethod_ = sn.GetMethod
def invoke_ = sn.Invoke
val ADD = encode("+")
val AND = encode("&")
val ASR = encode(">>")
val DIV = encode("/")
val EQ = encode("==")
val EQL = encode("=")
val GE = encode(">=")
val GT = encode(">")
val HASHHASH = encode("##")
val LE = encode("<=")
val LSL = encode("<<")
val LSR = encode(">>>")
val LT = encode("<")
val MINUS = encode("-")
val MOD = encode("%")
val MUL = encode("*")
val NE = encode("!=")
val OR = encode("|")
val PLUS = encode("+")
val SUB = encode("-")
val XOR = encode("^")
val ZAND = encode("&&")
val ZOR = encode("||")
// unary operators
val UNARY_~ = encode("unary_~")
val UNARY_+ = encode("unary_+")
val UNARY_- = encode("unary_-")
val UNARY_! = encode("unary_!")
}
abstract class SymbolNames {
protected implicit def stringToTypeName(s: String): TypeName = newTypeName(s)
val BeanProperty : TypeName
val BooleanBeanProperty : TypeName
val BoxedBoolean : TypeName
val BoxedCharacter : TypeName
val BoxedNumber : TypeName
val Class : TypeName
val Code : TypeName
val Delegate : TypeName
val IOOBException : TypeName // IndexOutOfBoundsException
val InvTargetException : TypeName // InvocationTargetException
val JavaSerializable : TypeName
val MethodAsObject : TypeName
val NPException : TypeName // NullPointerException
val Object : TypeName
val String : TypeName
val Throwable : TypeName
val ValueType : TypeName
val ForName : TermName
val GetCause : TermName
val GetClass : TermName
val GetMethod : TermName
val Invoke : TermName
val JavaLang : TermName
val Boxed: immutable.Map[TypeName, TypeName]
}
class JavaKeywords {
private var kws: Set[TermName] = Set()
private def kw(s: String): TermName = {
val result = newTermName(s)
kws = kws + result
result
}
final val ABSTRACTkw: TermName = kw("abstract")
final val ASSERTkw: TermName = kw("assert")
final val BOOLEANkw: TermName = kw("boolean")
final val BREAKkw: TermName = kw("break")
final val BYTEkw: TermName = kw("byte")
final val CASEkw: TermName = kw("case")
final val CATCHkw: TermName = kw("catch")
final val CHARkw: TermName = kw("char")
final val CLASSkw: TermName = kw("class")
final val CONSTkw: TermName = kw("const")
final val CONTINUEkw: TermName = kw("continue")
final val DEFAULTkw: TermName = kw("default")
final val DOkw: TermName = kw("do")
final val DOUBLEkw: TermName = kw("double")
final val ELSEkw: TermName = kw("else")
final val ENUMkw: TermName = kw("enum")
final val EXTENDSkw: TermName = kw("extends")
final val FINALkw: TermName = kw("final")
final val FINALLYkw: TermName = kw("finally")
final val FLOATkw: TermName = kw("float")
final val FORkw: TermName = kw("for")
final val IFkw: TermName = kw("if")
final val GOTOkw: TermName = kw("goto")
final val IMPLEMENTSkw: TermName = kw("implements")
final val IMPORTkw: TermName = kw("import")
final val INSTANCEOFkw: TermName = kw("instanceof")
final val INTkw: TermName = kw("int")
final val INTERFACEkw: TermName = kw("interface")
final val LONGkw: TermName = kw("long")
final val NATIVEkw: TermName = kw("native")
final val NEWkw: TermName = kw("new")
final val PACKAGEkw: TermName = kw("package")
final val PRIVATEkw: TermName = kw("private")
final val PROTECTEDkw: TermName = kw("protected")
final val PUBLICkw: TermName = kw("public")
final val RETURNkw: TermName = kw("return")
final val SHORTkw: TermName = kw("short")
final val STATICkw: TermName = kw("static")
final val STRICTFPkw: TermName = kw("strictfp")
final val SUPERkw: TermName = kw("super")
final val SWITCHkw: TermName = kw("switch")
final val SYNCHRONIZEDkw: TermName = kw("synchronized")
final val THISkw: TermName = kw("this")
final val THROWkw: TermName = kw("throw")
final val THROWSkw: TermName = kw("throws")
final val TRANSIENTkw: TermName = kw("transient")
final val TRYkw: TermName = kw("try")
final val VOIDkw: TermName = kw("void")
final val VOLATILEkw: TermName = kw("volatile")
final val WHILEkw: TermName = kw("while")
final val keywords = {
val result = kws.toSet
kws = null
result
}
}
private abstract class JavaNames extends SymbolNames {
final val BoxedBoolean: TypeName = "java.lang.Boolean"
final val BoxedByte: TypeName = "java.lang.Byte"
final val BoxedCharacter: TypeName = "java.lang.Character"
final val BoxedDouble: TypeName = "java.lang.Double"
final val BoxedFloat: TypeName = "java.lang.Float"
final val BoxedInteger: TypeName = "java.lang.Integer"
final val BoxedLong: TypeName = "java.lang.Long"
final val BoxedNumber: TypeName = "java.lang.Number"
final val BoxedShort: TypeName = "java.lang.Short"
final val Class: TypeName = "java.lang.Class"
final val Delegate: TypeName = tpnme.NO_NAME
final val IOOBException: TypeName = "java.lang.IndexOutOfBoundsException"
final val InvTargetException: TypeName = "java.lang.reflect.InvocationTargetException"
final val MethodAsObject: TypeName = "java.lang.reflect.Method"
final val NPException: TypeName = "java.lang.NullPointerException"
final val Object: TypeName = "java.lang.Object"
final val String: TypeName = "java.lang.String"
final val Throwable: TypeName = "java.lang.Throwable"
final val ValueType: TypeName = tpnme.NO_NAME
final val ForName: TermName = "forName"
final val GetCause: TermName = "getCause"
final val GetClass: TermName = "getClass"
final val GetMethod: TermName = "getMethod"
final val Invoke: TermName = "invoke"
final val JavaLang: TermName = "java.lang"
val Boxed = immutable.Map[TypeName, TypeName](
tpnme.Boolean -> BoxedBoolean,
tpnme.Byte -> BoxedByte,
tpnme.Char -> BoxedCharacter,
tpnme.Short -> BoxedShort,
tpnme.Int -> BoxedInteger,
tpnme.Long -> BoxedLong,
tpnme.Float -> BoxedFloat,
tpnme.Double -> BoxedDouble
)
}
private class MSILNames extends SymbolNames {
final val BeanProperty: TypeName = tpnme.NO_NAME
final val BooleanBeanProperty: TypeName = tpnme.NO_NAME
final val BoxedBoolean: TypeName = "System.IConvertible"
final val BoxedCharacter: TypeName = "System.IConvertible"
final val BoxedNumber: TypeName = "System.IConvertible"
final val Class: TypeName = "System.Type"
final val Code: TypeName = tpnme.NO_NAME
final val Delegate: TypeName = "System.MulticastDelegate"
final val IOOBException: TypeName = "System.IndexOutOfRangeException"
final val InvTargetException: TypeName = "System.Reflection.TargetInvocationException"
final val JavaSerializable: TypeName = tpnme.NO_NAME
final val MethodAsObject: TypeName = "System.Reflection.MethodInfo"
final val NPException: TypeName = "System.NullReferenceException"
final val Object: TypeName = "System.Object"
final val String: TypeName = "System.String"
final val Throwable: TypeName = "System.Exception"
final val ValueType: TypeName = "System.ValueType"
final val ForName: TermName = "GetType"
final val GetCause: TermName = "InnerException" /* System.Reflection.TargetInvocationException.InnerException */
final val GetClass: TermName = "GetType"
final val GetMethod: TermName = "GetMethod"
final val Invoke: TermName = "Invoke"
final val JavaLang: TermName = "System"
val Boxed = immutable.Map[TypeName, TypeName](
tpnme.Boolean -> "System.Boolean",
tpnme.Byte -> "System.SByte", // a scala.Byte is signed and a System.SByte too (unlike a System.Byte)
tpnme.Char -> "System.Char",
tpnme.Short -> "System.Int16",
tpnme.Int -> "System.Int32",
tpnme.Long -> "System.Int64",
tpnme.Float -> "System.Single",
tpnme.Double -> "System.Double"
)
}
private class J2SENames extends JavaNames {
final val BeanProperty: TypeName = "scala.reflect.BeanProperty"
final val BooleanBeanProperty: TypeName = "scala.reflect.BooleanBeanProperty"
final val Code: TypeName = "scala.reflect.Code"
final val JavaSerializable: TypeName = "java.io.Serializable"
}
lazy val sn: SymbolNames =
if (forMSIL) new MSILNames
else new J2SENames
}
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