Cleanups of NameOps

Remove unused functionality

Author: odersky

compiler/src/dotty/tools/backend/jvm/DottyBackendInterface.scala

@@ -30,9 +30,9 @@ import Decorators._
 import tpd._
 
 import scala.tools.asm
-import NameOps._
 import StdNames.nme
 import NameOps._
+import NameKinds.DefaultGetterName
 import dotty.tools.dotc.core
 import dotty.tools.dotc.core.Names.TypeName
 
@@ -255,7 +255,7 @@ class DottyBackendInterface(outputDirectory: AbstractFile, val superCallsMap: Ma
           val evalue = t.symbol.name.toString // value the actual enumeration value.
           av.visitEnum(name, edesc, evalue)
         } else {
-          assert(toDenot(t.symbol).name.toTermName.defaultGetterIndex >= 0) // this should be default getter. do not emmit.
+          assert(toDenot(t.symbol).name.is(DefaultGetterName)) // this should be default getter. do not emmit.
         }
       case t: SeqLiteral =>
         val arrAnnotV: AnnotationVisitor = av.visitArray(name)

compiler/src/dotty/tools/dotc/core/NameOps.scala

@@ -61,7 +61,6 @@ object NameOps {
     def isReplWrapperName = name.toSimpleName containsSlice INTERPRETER_IMPORT_WRAPPER
     def isSetterName = name endsWith SETTER_SUFFIX
     def isScala2LocalSuffix = name.endsWith(" ")
-    def isModuleVarName(name: Name): Boolean = name.exclude(UniqueName).is(ModuleVarName)
     def isSelectorName = name.startsWith("_") && name.tail.forall(_.isDigit)
 
     /** Is name a variable name? */
@@ -105,9 +104,6 @@ object NameOps {
       else name.toTermName.exclude(AvoidClashName)
     }
 
-    /** The superaccessor for method with given name */
-    def superName: TermName = SuperAccessorName(name.toTermName)
-
     def expandedName(base: Symbol, kind: QualifiedNameKind = ExpandedName)(implicit ctx: Context): N = {
       val prefix =
         if (base.name.is(ExpandedName)) base.name else base.fullNameSeparated(ExpandPrefixName)
@@ -307,17 +303,6 @@ object NameOps {
     }
   }
 
-  // needed???
-  private val Boxed = Map[TypeName, TypeName](
-    tpnme.Boolean -> jtpnme.BoxedBoolean,
-    tpnme.Byte -> jtpnme.BoxedByte,
-    tpnme.Char -> jtpnme.BoxedCharacter,
-    tpnme.Short -> jtpnme.BoxedShort,
-    tpnme.Int -> jtpnme.BoxedInteger,
-    tpnme.Long -> jtpnme.BoxedLong,
-    tpnme.Float -> jtpnme.BoxedFloat,
-    tpnme.Double -> jtpnme.BoxedDouble)
-
   implicit class TermNameDecorator(val name: TermName) extends AnyVal {
     import nme._
 
@@ -338,18 +323,6 @@ object NameOps {
       }
       else FieldName(name)
 
-    /** Nominally, name from name$default$N, CONSTRUCTOR for <init> */
-    def defaultGetterToMethod: TermName =
-      name rewrite {
-        case DefaultGetterName(methName, _) => methName
-      }
-
-    /** If this is a default getter, its index (starting from 0), else -1 */
-    def defaultGetterIndex: Int =
-      name collect {
-        case DefaultGetterName(_, num) => num
-      } getOrElse -1
-
     def stripScala2LocalSuffix: TermName =
       if (name.isScala2LocalSuffix) name.init.asTermName else name
 
@@ -361,57 +334,5 @@ object NameOps {
       case raw.BANG  => UNARY_!
       case _ => name
     }
-
-    /** The name of a method which stands in for a primitive operation
-     *  during structural type dispatch.
-     */
-    def primitiveInfixMethodName: TermName = name match {
-      case OR   => takeOr
-      case XOR  => takeXor
-      case AND  => takeAnd
-      case EQ   => testEqual
-      case NE   => testNotEqual
-      case ADD  => add
-      case SUB  => subtract
-      case MUL  => multiply
-      case DIV  => divide
-      case MOD  => takeModulo
-      case LSL  => shiftSignedLeft
-      case LSR  => shiftLogicalRight
-      case ASR  => shiftSignedRight
-      case LT   => testLessThan
-      case LE   => testLessOrEqualThan
-      case GE   => testGreaterOrEqualThan
-      case GT   => testGreaterThan
-      case ZOR  => takeConditionalOr
-      case ZAND => takeConditionalAnd
-      case _    => NO_NAME
-    }
-
-    /** Postfix/prefix, really.
-     */
-    def primitivePostfixMethodName: TermName = name match {
-      case UNARY_!    => takeNot
-      case UNARY_+    => positive
-      case UNARY_-    => negate
-      case UNARY_~    => complement
-      case `toByte`   => toByte
-      case `toShort`  => toShort
-      case `toChar`   => toCharacter
-      case `toInt`    => toInteger
-      case `toLong`   => toLong
-      case `toFloat`  => toFloat
-      case `toDouble` => toDouble
-      case _          => NO_NAME
-    }
-
-    def primitiveMethodName: TermName =
-      primitiveInfixMethodName match {
-        case NO_NAME => primitivePostfixMethodName
-        case name => name
-      }
   }
-
-  private final val FalseSuper = "$$super".toTermName
-  private val FalseSuperLength = FalseSuper.length
 }

compiler/src/dotty/tools/dotc/core/StdNames.scala

@@ -252,7 +252,6 @@ object StdNames {
     val REIFY_SYMDEF_PREFIX: N      = "symdef$"
     val MODULE_INSTANCE_FIELD: N    = NameTransformer.MODULE_INSTANCE_NAME  // "MODULE$"
     val OUTER: N                    = "$outer"
-    val OUTER_LOCAL: N              = "$outer "
     val REFINE_CLASS: N             = "<refinement>"
     val ROOTPKG: N                  = "_root_"
     val SELECTOR_DUMMY: N           = "<unapply-selector>"

compiler/src/dotty/tools/dotc/transform/SuperAccessors.scala

@@ -11,7 +11,7 @@ import Types._, Contexts._, Constants._, Names._, NameOps._, Flags._, DenotTrans
 import SymDenotations._, Symbols._, StdNames._, Annotations._, Trees._, Scopes._, Denotations._
 import util.Positions._
 import Decorators._
-import NameKinds.{ProtectedAccessorName, ProtectedSetterName, OuterSelectName}
+import NameKinds.{ProtectedAccessorName, ProtectedSetterName, OuterSelectName, SuperAccessorName}
 import Symbols._, TypeUtils._
 
 /** This class performs the following functions:
@@ -72,7 +72,7 @@ class SuperAccessors(thisTransformer: DenotTransformer) {
       val Select(qual, name) = sel
       val sym = sel.symbol
       val clazz = qual.symbol.asClass
-      var superName = name.superName
+      var superName = SuperAccessorName(name.asTermName)
       if (clazz is Trait) superName = superName.expandedName(clazz)
       val superInfo = sel.tpe.widenSingleton.ensureMethodic
 

compiler/src/dotty/tools/dotc/typer/Namer.scala

@@ -6,6 +6,7 @@ import core._
 import ast._
 import Trees._, Constants._, StdNames._, Scopes._, Denotations._, Comments._
 import Contexts._, Symbols._, Types._, SymDenotations._, Names._, NameOps._, Flags._, Decorators._
+import NameKinds.DefaultGetterName
 import ast.desugar, ast.desugar._
 import ProtoTypes._
 import util.Positions._
@@ -1012,12 +1013,8 @@ class Namer { typer: Typer =>
        *  the corresponding parameter where bound parameters are replaced by
        *  Wildcards.
        */
-      def rhsProto = {
-        val name = sym.asTerm.name
-        val idx = name.defaultGetterIndex
-        if (idx < 0) WildcardType
-        else {
-          val original = name.defaultGetterToMethod
+      def rhsProto = sym.asTerm.name collect {
+        case DefaultGetterName(original, idx) =>
           val meth: Denotation =
             if (original.isConstructorName && (sym.owner is ModuleClass))
               sym.owner.companionClass.info.decl(nme.CONSTRUCTOR)
@@ -1035,8 +1032,7 @@ class Namer { typer: Typer =>
             paramProto(defaultAlts.head.info.widen.paramInfoss, idx)
           else
             WildcardType
-        }
-      }
+      } getOrElse WildcardType
 
       // println(s"final inherited for $sym: ${inherited.toString}") !!!
       // println(s"owner = ${sym.owner}, decls = ${sym.owner.info.decls.show}")

compiler/src/dotty/tools/dotc/typer/RefChecks.scala

@@ -6,6 +6,7 @@ import core._
 import config._
 import Symbols._, SymDenotations._, Types._, Contexts._, Decorators._, Flags._, Names._, NameOps._
 import StdNames._, Denotations._, Scopes._, Constants.Constant, SymUtils._
+import NameKinds.DefaultGetterName
 import Annotations._
 import util.Positions._
 import scala.collection.{ mutable, immutable }
@@ -24,12 +25,8 @@ object RefChecks {
   import reporting.diagnostic.Message
   import reporting.diagnostic.messages._
 
-
-  private def isDefaultGetter(name: Name): Boolean =
-    name.isTermName && name.asTermName.defaultGetterIndex >= 0
-
   private val defaultMethodFilter = new NameFilter {
-    def apply(pre: Type, name: Name)(implicit ctx: Context): Boolean = isDefaultGetter(name)
+    def apply(pre: Type, name: Name)(implicit ctx: Context): Boolean = name.is(DefaultGetterName)
   }
 
   /** Only one overloaded alternative is allowed to define default arguments */
@@ -45,7 +42,9 @@ object RefChecks {
       if defaultGetterClass.isClass
     ) {
       val defaultGetterNames = defaultGetterClass.asClass.memberNames(defaultMethodFilter)
-      val defaultMethodNames = defaultGetterNames map (_.asTermName.defaultGetterToMethod)
+      val defaultMethodNames = defaultGetterNames map { _ rewrite {
+        case DefaultGetterName(methName, _) => methName
+      }}
 
       for (name <- defaultMethodNames) {
         val methods = clazz.info.member(name).alternatives.map(_.symbol)
@@ -238,7 +237,7 @@ object RefChecks {
           }
         }
         else
-          isDefaultGetter(member.name) || // default getters are not checked for compatibility
+          member.name.is(DefaultGetterName) || // default getters are not checked for compatibility
           memberTp.overrides(otherTp)
 
       //Console.println(infoString(member) + " overrides " + infoString(other) + " in " + clazz);//DEBUG
@@ -298,7 +297,7 @@ object RefChecks {
       } else if (other.isEffectivelyFinal) { // (1.2)
         overrideError(i"cannot override final member ${other.showLocated}")
       } else if (!other.is(Deferred) &&
-                 !isDefaultGetter(other.name) &&
+                 !other.name.is(DefaultGetterName) &&
                  !member.isAnyOverride) {
         // (*) Exclusion for default getters, fixes SI-5178. We cannot assign the Override flag to
         // the default getter: one default getter might sometimes override, sometimes not. Example in comment on ticket.