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import java.util.function.Predicate;
import javax.lang.model.type.*;
import com.sun.tools.javac.code.Symbol.*;
+ import com.sun.tools.javac.code.Type.ClassType.Flavor;
import com.sun.tools.javac.code.TypeMetadata.Entry;
import com.sun.tools.javac.code.Types.TypeMapping;
import com.sun.tools.javac.code.Types.UniqueType;
import com.sun.tools.javac.comp.Infer.IncorporationAction;
import com.sun.tools.javac.jvm.ClassFile;
Assert.checkNonNull(metadata);
this.tsym = tsym;
this.metadata = metadata;
}
+ public boolean isPrimitiveClass() {
+ return false;
+ }
+
+ public boolean isValueClass() {
+ return false;
+ }
+
+ public boolean isValueInterface() {
+ return false;
+ }
+
+ public boolean isIdentityClass() {
+ return false;
+ }
+
+ public boolean isIdentityInterface() {
+ return false;
+ }
+
+ // Does this type need to be preloaded in the context of the referring class ??
+ public boolean requiresPreload(Symbol referringClass) {
+ if (this.tsym == referringClass)
+ return false; // pointless
+ if (this.isReferenceProjection())
+ return true;
+ return this.isValueClass() && !this.isPrimitiveClass();
+ }
+
+ /**
+ * Return the `flavor' associated with a ClassType.
+ * @see ClassType.Flavor
+ */
+ public Flavor getFlavor() {
+ throw new AssertionError("Unexpected call to getFlavor() on a Type that is not a ClassType: " + this);
+ }
+
+ /**
+ * @return true IFF the receiver is a reference projection of a primitive class type and false
+ * for primitives or plain references
+ */
+ public boolean isReferenceProjection() {
+ return false;
+ }
+
+ /**
+ * @return the value projection type IFF the receiver is a reference projection of a primitive class type
+ * and null otherwise
+ */
+ public Type valueProjection() {
+ return null;
+ }
+
+ /**
+ * @return the reference projection type IFF the receiver is a primitive class type
+ * and null otherwise
+ */
+ public Type referenceProjection() {
+ return null;
+ }
+
+ /**
+ * @return the reference projection type IFF the receiver is a primitive class type or self otherwise.
+ */
+ public Type referenceProjectionOrSelf() {
+ Type projection = referenceProjection();
+ return projection != null ? projection : this;
+ }
+
/**
* A subclass of {@link Types.TypeMapping} which applies a mapping recursively to the subterms
* of a given type expression. This mapping returns the original type is no changes occurred
* when recursively mapping the original type's subterms.
*/
Type outer = t.getEnclosingType();
Type outer1 = visit(outer, s);
List<Type> typarams = t.getTypeArguments();
List<Type> typarams1 = visit(typarams, s);
if (outer1 == outer && typarams1 == typarams) return t;
- else return new ClassType(outer1, typarams1, t.tsym, t.metadata) {
+ else return new ClassType(outer1, typarams1, t.tsym, t.metadata, t.getFlavor()) {
@Override
protected boolean needsStripping() {
return true;
}
};
public <R, P> R accept(TypeVisitor<R, P> v, P p) {
return v.visitWildcard(this, p);
}
}
+ public static class ConstantPoolQType implements PoolConstant {
+
+ public final Type type;
+ final Types types;
+
+ public ConstantPoolQType(Type type, Types types) {
+ this.type = type;
+ this.types = types;
+ }
+
+ @Override
+ public Object poolKey(Types types) {
+ return this;
+ }
+
+ @Override
+ public int poolTag() {
+ return ClassFile.CONSTANT_Class;
+ }
+
+ public int hashCode() {
+ return types.hashCode(type);
+ }
+
+ public boolean equals(Object obj) {
+ return (obj instanceof ConstantPoolQType) &&
+ types.isSameType(type, ((ConstantPoolQType)obj).type);
+ }
+
+ public String toString() {
+ return type.toString();
+ }
+ }
+
public static class ClassType extends Type implements DeclaredType, LoadableConstant,
javax.lang.model.type.ErrorType {
+ /**
+ * The 'flavor' of a ClassType indicates its reference/primitive projectionness
+ * viewed against the default nature of the associated class.
+ */
+ public enum Flavor {
+
+ /**
+ * Classic reference type. Also reference projection type of a reference-favoring aka
+ * reference-default primitive class type
+ */
+ L_TypeOf_L,
+
+ /**
+ * Reference projection type of a primitive-favoring aka primitive-default
+ * plain vanilla primitive class type,
+ */
+ L_TypeOf_Q,
+
+ /**
+ * Value projection type of a primitive-favoring aka primitive-default
+ * plain vanilla primitive class type,
+ */
+ Q_TypeOf_Q,
+
+ /**
+ * Value projection type of a reference-favoring aka
+ * reference-default primitive class type
+ */
+ Q_TypeOf_L,
+
+ /**
+ * Reference projection type of a class type of an as yet unknown default provenance, 'X' will be
+ * discovered to be 'L' or 'Q' in "due course" and mutated suitably.
+ */
+ L_TypeOf_X,
+
+ /**
+ * Value projection type of a class type of an as yet unknown default provenance, 'X' will be
+ * discovered to be 'L' or 'Q' in "due course" and mutated suitably.
+ */
+ Q_TypeOf_X,
+
+ /**
+ * As yet unknown projection type of an as yet unknown default provenance class.
+ */
+ X_Typeof_X,
+
+ /**
+ * An error type - we don't care to discriminate them any further.
+ */
+ E_Typeof_X;
+
+ // We don't seem to need X_Typeof_L or X_Typeof_Q so far.
+
+ // Transform a larval form into a more evolved form
+ public Flavor metamorphose(boolean isPrimtiveClass) {
+
+ switch (this) {
+
+ case E_Typeof_X: // stunted form
+ case L_TypeOf_L:
+ case L_TypeOf_Q:
+ case Q_TypeOf_L:
+ case Q_TypeOf_Q:
+ // These are fully evolved sealed forms or stunted - no futher transformation
+ return this;
+ case L_TypeOf_X:
+ return isPrimtiveClass ? L_TypeOf_Q : L_TypeOf_L;
+ case Q_TypeOf_X:
+ return isPrimtiveClass ? Q_TypeOf_Q : Q_TypeOf_L;
+ case X_Typeof_X:
+ return isPrimtiveClass ? Q_TypeOf_Q : L_TypeOf_L;
+ default:
+ throw new AssertionError("Unexpected class type flavor");
+ }
+ }
+ }
+
/** The enclosing type of this type. If this is the type of an inner
* class, outer_field refers to the type of its enclosing
* instance class, in all other cases it refers to noType.
*/
private Type outer_field;
/** All the interfaces of this class, including missing ones.
*/
public List<Type> all_interfaces_field;
+ /** The 'other' projection: If 'this' is type of a primitive class, then 'projection' is the
+ * reference projection type and vice versa. Lazily initialized, not to be accessed directly.
+ */
+ public ClassType projection;
+
+ /** Is this L of default {L, Q, X} or Q of default {L, Q, X} ?
+ */
+ public Flavor flavor;
+
+ /*
+ * Use of this constructor is kinda sorta deprecated, use the other constructor
+ * that forces the call site to consider and include the class type flavor.
+ */
public ClassType(Type outer, List<Type> typarams, TypeSymbol tsym) {
- this(outer, typarams, tsym, TypeMetadata.EMPTY);
+ this(outer, typarams, tsym, TypeMetadata.EMPTY, Flavor.L_TypeOf_L);
}
public ClassType(Type outer, List<Type> typarams, TypeSymbol tsym,
- TypeMetadata metadata) {
+ TypeMetadata metadata, Flavor flavor) {
super(tsym, metadata);
this.outer_field = outer;
this.typarams_field = typarams;
this.allparams_field = null;
this.supertype_field = null;
this.interfaces_field = null;
+ this.flavor = flavor;
}
public int poolTag() {
return ClassFile.CONSTANT_Class;
}
@Override
public ClassType cloneWithMetadata(TypeMetadata md) {
- return new ClassType(outer_field, typarams_field, tsym, md) {
+ return new ClassType(outer_field, typarams_field, tsym, md, flavor) {
@Override
public Type baseType() { return ClassType.this.baseType(); }
};
}
return v.visitClassType(this, s);
}
public Type constType(Object constValue) {
final Object value = constValue;
- return new ClassType(getEnclosingType(), typarams_field, tsym, metadata) {
+ return new ClassType(getEnclosingType(), typarams_field, tsym, metadata, flavor) {
@Override
public Object constValue() {
return value;
}
@Override
} else {
buf.append(className(tsym, true));
}
}
+ boolean isReferenceProjection;
+ try {
+ isReferenceProjection = isReferenceProjection();
+ } catch (CompletionFailure cf) {
+ isReferenceProjection = false; // handle missing types gracefully.
+ }
+ if (isReferenceProjection) {
+ buf.append('.');
+ buf.append(tsym.name.table.names.ref);
+ }
+
if (getTypeArguments().nonEmpty()) {
buf.append('<');
buf.append(getTypeArguments().toString());
buf.append(">");
}
} else {
return sym.name.toString();
}
}
+ public Flavor getFlavor() {
+ return flavor;
+ }
+
@DefinedBy(Api.LANGUAGE_MODEL)
public List<Type> getTypeArguments() {
if (typarams_field == null) {
complete();
if (typarams_field == null)
return isRaw();
}
@DefinedBy(Api.LANGUAGE_MODEL)
public Type getEnclosingType() {
+ if (outer_field != null && outer_field.isReferenceProjection()) {
+ outer_field = outer_field.valueProjection();
+ }
return outer_field;
}
public void setEnclosingType(Type outer) {
outer_field = outer;
@Override
public boolean isReference() {
return true;
}
+ @Override
+ public boolean isPrimitiveClass() {
+ return !isReferenceProjection() && tsym != null && tsym.isPrimitiveClass();
+ }
+
+ @Override
+ public boolean isValueClass() {
+ return !isReferenceProjection() && tsym != null && tsym.isValueClass();
+ }
+
+ @Override
+ public boolean isValueInterface() {
+ return tsym != null && tsym.isValueInterface();
+ }
+
+ @Override
+ public boolean isIdentityClass() {
+ return !isReferenceProjection() && tsym != null && tsym.isIdentityClass();
+ }
+
+ @Override
+ public boolean isIdentityInterface() {
+ return isInterface() && tsym.isIdentityInterface();
+ }
+
+ @Override
+ public boolean isReferenceProjection() {
+ // gaurd against over-eager and/or inopportune completion
+ if (tsym != null) {
+ if (flavor == Flavor.L_TypeOf_X || tsym.isCompleted()) {
+ flavor = flavor.metamorphose(tsym.isPrimitiveClass());
+ }
+ }
+ return flavor == Flavor.L_TypeOf_Q;
+ }
+
+ @Override
+ public Type valueProjection() {
+ if (!isReferenceProjection())
+ return null;
+
+ if (projection != null)
+ return projection;
+
+ projection = new ClassType(outer_field, typarams_field, tsym, getMetadata(), Flavor.Q_TypeOf_Q);
+ projection.allparams_field = allparams_field;
+ projection.supertype_field = supertype_field;
+
+ projection.interfaces_field = interfaces_field;
+ projection.all_interfaces_field = all_interfaces_field;
+ projection.projection = this;
+ return projection;
+ }
+
+ // return the reference projection type preserving parameterizations
+ @Override
+ public ClassType referenceProjection() {
+
+ if (!isPrimitiveClass())
+ return null;
+
+ if (projection != null)
+ return projection;
+
+ projection = new ClassType(outer_field, typarams_field, tsym, getMetadata(), Flavor.L_TypeOf_Q);
+ projection.allparams_field = allparams_field;
+ projection.supertype_field = supertype_field;
+
+ projection.interfaces_field = interfaces_field;
+ projection.all_interfaces_field = all_interfaces_field;
+ projection.projection = this;
+ return projection;
+ }
+
@Override
public boolean isNullOrReference() {
return true;
}
}
public static class ErasedClassType extends ClassType {
public ErasedClassType(Type outer, TypeSymbol tsym,
TypeMetadata metadata) {
- super(outer, List.nil(), tsym, metadata);
+ super(outer, List.nil(), tsym, metadata, tsym.type.getFlavor());
}
@Override
public boolean hasErasedSupertypes() {
return true;
c.kind = ERR;
c.members_field = new Scope.ErrorScope(c);
}
public ErrorType(Type originalType, TypeSymbol tsym) {
- super(noType, List.nil(), null);
- this.tsym = tsym;
+ super(noType, List.nil(), tsym, TypeMetadata.EMPTY, Flavor.E_Typeof_X);
this.originalType = (originalType == null ? noType : originalType);
}
private ErrorType(Type originalType, TypeSymbol tsym,
- TypeMetadata metadata) {
- super(noType, List.nil(), null, metadata);
+ TypeMetadata metadata, Flavor flavor) {
+ super(noType, List.nil(), null, metadata, flavor);
this.tsym = tsym;
this.originalType = (originalType == null ? noType : originalType);
}
@Override
public ErrorType cloneWithMetadata(TypeMetadata md) {
- return new ErrorType(originalType, tsym, md) {
+ return new ErrorType(originalType, tsym, md, getFlavor()) {
@Override
public Type baseType() { return ErrorType.this.baseType(); }
};
}
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