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/* NSC -- new scala compiler
* Copyright 2005 LAMP/EPFL
* @author Martin Odersky
*/
// $Id$
package scala.tools.nsc.symtab;
import scala.tools.util.Position;
import Flags._;
abstract class Definitions: SymbolTable {
object definitions {
// root packages and classes
var RootClass: Symbol = _;
var EmptyPackage: Symbol = _;
var EmptyPackageClass: Symbol = _;
var emptypackagescope: Scope = null; //debug
var JavaPackage: Symbol = _;
var JavaLangPackage: Symbol = _;
var ScalaPackage: Symbol = _;
var ScalaPackageClass: Symbol = _;
var AnyClass: Symbol = _;
var AnyValClass: Symbol = _;
var ObjectClass: Symbol = _;
var AnyRefClass: Symbol = _;
var AllRefClass: Symbol = _;
var AllClass: Symbol = _;
var StringClass: Symbol = _;
var ThrowableClass: Symbol = _;
// the scala value classes
var UnitClass: Symbol = _;
var BooleanClass: Symbol = _;
var ByteClass: Symbol = _;
var ShortClass: Symbol = _;
var CharClass: Symbol = _;
var IntClass: Symbol = _;
var LongClass: Symbol = _;
var FloatClass: Symbol = _;
var DoubleClass: Symbol = _;
// the scala reference classes
var ScalaObjectClass: Symbol = _;
var AttributeClass: Symbol = _;
var RefClass: Symbol = _;
var PartialFunctionClass: Symbol = _;
var IterableClass: Symbol = _;
var IteratorClass: Symbol = _;
var SeqClass: Symbol = _;
var ListClass: Symbol = _;
var ArrayClass: Symbol = _;
var TypeClass: Symbol = _;
var PredefModule: Symbol = _;
var ConsoleModule: Symbol = _;
var MatchErrorModule: Symbol = _;
var NilModule: Symbol = _;
var ConsClass: Symbol = _;
var RepeatedParamClass: Symbol = _;
def TupleClass(i: int): Symbol = getClass("scala.Tuple" + i);
def FunctionClass(i: int): Symbol = getClass("scala.Function" + i);
def tupleType(elems: List[Type]) = {
val sym = TupleClass(elems.length);
typeRef(sym.info.prefix, sym, elems)
}
def functionType(formals: List[Type], restpe: Type) = {
val sym = FunctionClass(formals.length);
typeRef(sym.info.prefix, sym, formals ::: List(restpe))
}
def seqType(arg: Type) =
typeRef(SeqClass.info.prefix, SeqClass, List(arg));
// members of class scala.Any
var Any_== : Symbol = _;
var Any_!= : Symbol = _;
var Any_equals : Symbol = _;
var Any_hashCode : Symbol = _;
var Any_toString : Symbol = _;
var Any_isInstanceOf: Symbol = _;
var Any_asInstanceOf: Symbol = _;
// members of class java.lang.{Object, String}
var Object_eq : Symbol = _;
var Object_synchronized: Symbol = _;
var String_+ : Symbol = _;
// pattern wildcard
var PatternWildcard: Symbol = _;
def getModule(fullname: Name): Symbol =
getModuleOrClass(fullname, true);
def getClass(fullname: Name): Symbol =
getModuleOrClass(fullname, false);
private def getModuleOrClass(fullname: Name, module: boolean): Symbol = {
var sym = RootClass;
var i = 0;
var j = fullname.pos('.', i);
while (j < fullname.length) {
sym = sym.info.nonPrivateMember(fullname.subName(i, j));
i = j + 1;
j = fullname.pos('.', i)
}
val result =
if (module) sym.info.nonPrivateMember(fullname.subName(i, j)).suchThat(.hasFlag(MODULE));
else sym.info.nonPrivateMember(fullname.subName(i, j).toTypeName);
if (result == NoSymbol)
throw new FatalError((if (module) "object " else "class ") + fullname + " not found.");
result
}
private def newClass(owner: Symbol, name: Name, parents: List[Type]): Symbol = {
val clazz = owner.newClass(Position.NOPOS, name.toTypeName);
clazz.setInfo(ClassInfoType(parents, new Scope(), clazz));
owner.info.decls.enter(clazz);
clazz
}
private def newAlias(owner: Symbol, name: Name, alias: Type): Symbol = {
val tpsym = owner.newAliasType(Position.NOPOS, name.toTypeName);
tpsym.setInfo(alias);
owner.info.decls.enter(tpsym);
tpsym
}
private def newMethod(owner: Symbol, name: Name): Symbol = {
val msym = owner.newMethod(Position.NOPOS, name);
owner.info.decls.enter(msym);
msym
}
private def newTypeParam(owner: Symbol, index: int): Symbol =
owner.newTypeParameter(Position.NOPOS, "T" + index)
.setInfo(TypeBounds(AllClass.tpe, AnyClass.tpe));
def init = {
RootClass =
NoSymbol.newClass(Position.NOPOS, nme.ROOT.toTypeName)
.setFlag(FINAL | PACKAGE | JAVA).setInfo(rootLoader);
EmptyPackage =
RootClass.newPackage(Position.NOPOS, nme.EMPTY_PACKAGE_NAME).setFlag(FINAL);
EmptyPackageClass = EmptyPackage.moduleClass;
EmptyPackageClass.setInfo(ClassInfoType(List(), new Scope(), EmptyPackageClass));
EmptyPackage.setInfo(EmptyPackageClass.typeConstructor);
RootClass.info.decls.enter(EmptyPackage);
JavaPackage = getModule("java");
JavaLangPackage = getModule("java.lang");
ScalaPackage = getModule("scala");
ScalaPackageClass = ScalaPackage.tpe.symbol;
AnyClass = newClass(ScalaPackageClass, "Any", List());
AnyValClass = getClass("scala.AnyVal");
ObjectClass = getClass("java.lang.Object");
AnyRefClass = newAlias(ScalaPackageClass, "AnyRef", ObjectClass.tpe);
AllRefClass = newClass(ScalaPackageClass, "AllRef", List(AnyRefClass.tpe));
AllClass = newClass(ScalaPackageClass, "All", List(AnyClass.tpe));
StringClass = getClass("java.lang.String");
ThrowableClass = getClass("java.lang.Throwable");
// the scala value classes
UnitClass = getClass("scala.Unit");
BooleanClass = getClass("scala.Boolean");
ByteClass = getClass("scala.Byte");
ShortClass = getClass("scala.Short");
CharClass = getClass("scala.Char");
IntClass = getClass("scala.Int");
LongClass = getClass("scala.Long");
FloatClass = getClass("scala.Float");
DoubleClass = getClass("scala.Double");
// the scala reference classes
ScalaObjectClass = getClass("scala.ScalaObject");
AttributeClass = getClass("scala.Attribute");
RefClass = getClass("scala.Ref");
PartialFunctionClass = getClass("scala.PartialFunction");
IterableClass = getClass("scala.Iterable");
IteratorClass = getClass("scala.Iterator");
SeqClass = getClass("scala.Seq");
ListClass = getClass("scala.List");
ArrayClass = getClass("scala.Array");
System.out.println("array class: " + ArrayClass.tpe);//debug
TypeClass = getClass("scala.Type");
PredefModule = getModule("scala.Predef");
ConsoleModule = getModule("scala.Console");
MatchErrorModule = getModule("scala.MatchError");
NilModule = getModule("scala.Nil");
ConsClass = getClass("scala.$colon$colon");
RepeatedParamClass = newClass(ScalaPackageClass, nme.REPEATED_PARAM_CLASS_NAME, List());
{ val tparam = newTypeParam(RepeatedParamClass, 0);
RepeatedParamClass.setInfo(
PolyType(
List(tparam),
ClassInfoType(
List(typeRef(SeqClass.tpe.prefix, SeqClass, List(tparam.typeConstructor))),
new Scope(),
RepeatedParamClass)))
}
// members of class scala.Any
Any_== = newMethod(AnyClass, "==")
.setInfo(MethodType(List(AnyClass.tpe), BooleanClass.tpe))
.setFlag(FINAL);
Any_!= = newMethod(AnyClass, "!=")
.setInfo(MethodType(List(AnyClass.tpe), BooleanClass.tpe))
.setFlag(FINAL);
Any_equals = newMethod(AnyClass, "equals")
.setInfo(MethodType(List(AnyClass.tpe), BooleanClass.tpe));
Any_hashCode = newMethod(AnyClass, "hashCode")
.setInfo(MethodType(List(), IntClass.tpe));
Any_toString = newMethod(AnyClass, "toString")
.setInfo(MethodType(List(), StringClass.tpe));
Any_isInstanceOf = newMethod(AnyClass, "isInstanceOf")
.setFlag(FINAL);
{ val tparam = newTypeParam(Any_isInstanceOf, 0);
Any_isInstanceOf.setInfo(PolyType(List(tparam), BooleanClass.tpe));
}
Any_asInstanceOf = newMethod(AnyClass, "asInstanceOf")
.setFlag(FINAL);
{ val tparam = newTypeParam(Any_asInstanceOf, 0);
Any_asInstanceOf.setInfo(PolyType(List(tparam), tparam.typeConstructor));
}
// members of class java.lang.{Object, String}
Object_eq = newMethod(ObjectClass, "eq")
.setInfo(MethodType(List(AnyRefClass.tpe), BooleanClass.tpe))
.setFlag(FINAL);
Object_synchronized = newMethod(ObjectClass, "synchronized")
.setFlag(FINAL);
{ val tparam = newTypeParam(Object_synchronized, 0);
Object_synchronized.setInfo(
PolyType(
List(tparam),
MethodType(List(tparam.typeConstructor), tparam.typeConstructor)));
}
String_+ = newMethod(StringClass, "+")
.setInfo(MethodType(List(AnyClass.tpe), StringClass.tpe))
.setFlag(FINAL);
// pattern wildcard
PatternWildcard = NoSymbol.newValue(Position.NOPOS, "_").setInfo(AllClass.tpe)
}
}
}
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