| /* |
| * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.javac.code; |
| |
| import java.lang.annotation.Annotation; |
| import java.util.Collections; |
| import java.util.EnumMap; |
| import java.util.EnumSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import javax.lang.model.type.*; |
| |
| import com.sun.tools.javac.code.Symbol.*; |
| import com.sun.tools.javac.util.*; |
| import static com.sun.tools.javac.code.BoundKind.*; |
| import static com.sun.tools.javac.code.Flags.*; |
| import static com.sun.tools.javac.code.Kinds.*; |
| import static com.sun.tools.javac.code.TypeTag.*; |
| |
| /** This class represents Java types. The class itself defines the behavior of |
| * the following types: |
| * <pre> |
| * base types (tags: BYTE, CHAR, SHORT, INT, LONG, FLOAT, DOUBLE, BOOLEAN), |
| * type `void' (tag: VOID), |
| * the bottom type (tag: BOT), |
| * the missing type (tag: NONE). |
| * </pre> |
| * <p>The behavior of the following types is defined in subclasses, which are |
| * all static inner classes of this class: |
| * <pre> |
| * class types (tag: CLASS, class: ClassType), |
| * array types (tag: ARRAY, class: ArrayType), |
| * method types (tag: METHOD, class: MethodType), |
| * package types (tag: PACKAGE, class: PackageType), |
| * type variables (tag: TYPEVAR, class: TypeVar), |
| * type arguments (tag: WILDCARD, class: WildcardType), |
| * generic method types (tag: FORALL, class: ForAll), |
| * the error type (tag: ERROR, class: ErrorType). |
| * </pre> |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| * |
| * @see TypeTag |
| */ |
| public abstract class Type extends AnnoConstruct implements TypeMirror { |
| |
| /** Constant type: no type at all. */ |
| public static final JCNoType noType = new JCNoType(); |
| |
| /** Constant type: special type to be used during recovery of deferred expressions. */ |
| public static final JCNoType recoveryType = new JCNoType(); |
| |
| /** Constant type: special type to be used for marking stuck trees. */ |
| public static final JCNoType stuckType = new JCNoType(); |
| |
| /** If this switch is turned on, the names of type variables |
| * and anonymous classes are printed with hashcodes appended. |
| */ |
| public static boolean moreInfo = false; |
| |
| /** The defining class / interface / package / type variable. |
| */ |
| public TypeSymbol tsym; |
| |
| /** |
| * Checks if the current type tag is equal to the given tag. |
| * @return true if tag is equal to the current type tag. |
| */ |
| public boolean hasTag(TypeTag tag) { |
| return tag == getTag(); |
| } |
| |
| /** |
| * Returns the current type tag. |
| * @return the value of the current type tag. |
| */ |
| public abstract TypeTag getTag(); |
| |
| public boolean isNumeric() { |
| return false; |
| } |
| |
| public boolean isPrimitive() { |
| return false; |
| } |
| |
| public boolean isPrimitiveOrVoid() { |
| return false; |
| } |
| |
| public boolean isReference() { |
| return false; |
| } |
| |
| public boolean isNullOrReference() { |
| return false; |
| } |
| |
| public boolean isPartial() { |
| return false; |
| } |
| |
| /** |
| * The constant value of this type, null if this type does not |
| * have a constant value attribute. Only primitive types and |
| * strings (ClassType) can have a constant value attribute. |
| * @return the constant value attribute of this type |
| */ |
| public Object constValue() { |
| return null; |
| } |
| |
| /** Is this a constant type whose value is false? |
| */ |
| public boolean isFalse() { |
| return false; |
| } |
| |
| /** Is this a constant type whose value is true? |
| */ |
| public boolean isTrue() { |
| return false; |
| } |
| |
| /** |
| * Get the representation of this type used for modelling purposes. |
| * By default, this is itself. For ErrorType, a different value |
| * may be provided. |
| */ |
| public Type getModelType() { |
| return this; |
| } |
| |
| public static List<Type> getModelTypes(List<Type> ts) { |
| ListBuffer<Type> lb = new ListBuffer<>(); |
| for (Type t: ts) |
| lb.append(t.getModelType()); |
| return lb.toList(); |
| } |
| |
| /**For ErrorType, returns the original type, otherwise returns the type itself. |
| */ |
| public Type getOriginalType() { |
| return this; |
| } |
| |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { return v.visitType(this, s); } |
| |
| /** Define a type given its tag and type symbol |
| */ |
| public Type(TypeSymbol tsym) { |
| this.tsym = tsym; |
| } |
| |
| /** An abstract class for mappings from types to types |
| */ |
| public static abstract class Mapping { |
| private String name; |
| public Mapping(String name) { |
| this.name = name; |
| } |
| public abstract Type apply(Type t); |
| public String toString() { |
| return name; |
| } |
| } |
| |
| /** map a type function over all immediate descendants of this type |
| */ |
| public Type map(Mapping f) { |
| return this; |
| } |
| |
| /** map a type function over a list of types |
| */ |
| public static List<Type> map(List<Type> ts, Mapping f) { |
| if (ts.nonEmpty()) { |
| List<Type> tail1 = map(ts.tail, f); |
| Type t = f.apply(ts.head); |
| if (tail1 != ts.tail || t != ts.head) |
| return tail1.prepend(t); |
| } |
| return ts; |
| } |
| |
| /** Define a constant type, of the same kind as this type |
| * and with given constant value |
| */ |
| public Type constType(Object constValue) { |
| throw new AssertionError(); |
| } |
| |
| /** |
| * If this is a constant type, return its underlying type. |
| * Otherwise, return the type itself. |
| */ |
| public Type baseType() { |
| return this; |
| } |
| |
| public Type annotatedType(List<Attribute.TypeCompound> annos) { |
| return new AnnotatedType(annos, this); |
| } |
| |
| public boolean isAnnotated() { |
| return false; |
| } |
| |
| /** |
| * If this is an annotated type, return the underlying type. |
| * Otherwise, return the type itself. |
| */ |
| public Type unannotatedType() { |
| return this; |
| } |
| |
| @Override |
| public List<Attribute.TypeCompound> getAnnotationMirrors() { |
| return List.nil(); |
| } |
| |
| |
| @Override |
| public <A extends Annotation> A getAnnotation(Class<A> annotationType) { |
| return null; |
| } |
| |
| |
| @Override |
| public <A extends Annotation> A[] getAnnotationsByType(Class<A> annotationType) { |
| @SuppressWarnings("unchecked") |
| A[] tmp = (A[]) java.lang.reflect.Array.newInstance(annotationType, 0); |
| return tmp; |
| } |
| |
| /** Return the base types of a list of types. |
| */ |
| public static List<Type> baseTypes(List<Type> ts) { |
| if (ts.nonEmpty()) { |
| Type t = ts.head.baseType(); |
| List<Type> baseTypes = baseTypes(ts.tail); |
| if (t != ts.head || baseTypes != ts.tail) |
| return baseTypes.prepend(t); |
| } |
| return ts; |
| } |
| |
| /** The Java source which this type represents. |
| */ |
| public String toString() { |
| String s = (tsym == null || tsym.name == null) |
| ? "<none>" |
| : tsym.name.toString(); |
| if (moreInfo && hasTag(TYPEVAR)) { |
| s = s + hashCode(); |
| } |
| return s; |
| } |
| |
| /** |
| * The Java source which this type list represents. A List is |
| * represented as a comma-spearated listing of the elements in |
| * that list. |
| */ |
| public static String toString(List<Type> ts) { |
| if (ts.isEmpty()) { |
| return ""; |
| } else { |
| StringBuilder buf = new StringBuilder(); |
| buf.append(ts.head.toString()); |
| for (List<Type> l = ts.tail; l.nonEmpty(); l = l.tail) |
| buf.append(",").append(l.head.toString()); |
| return buf.toString(); |
| } |
| } |
| |
| /** |
| * The constant value of this type, converted to String |
| */ |
| public String stringValue() { |
| Object cv = Assert.checkNonNull(constValue()); |
| return cv.toString(); |
| } |
| |
| /** |
| * This method is analogous to isSameType, but weaker, since we |
| * never complete classes. Where isSameType would complete a |
| * class, equals assumes that the two types are different. |
| */ |
| @Override |
| public boolean equals(Object t) { |
| return super.equals(t); |
| } |
| |
| @Override |
| public int hashCode() { |
| return super.hashCode(); |
| } |
| |
| public String argtypes(boolean varargs) { |
| List<Type> args = getParameterTypes(); |
| if (!varargs) return args.toString(); |
| StringBuilder buf = new StringBuilder(); |
| while (args.tail.nonEmpty()) { |
| buf.append(args.head); |
| args = args.tail; |
| buf.append(','); |
| } |
| if (args.head.unannotatedType().hasTag(ARRAY)) { |
| buf.append(((ArrayType)args.head.unannotatedType()).elemtype); |
| if (args.head.getAnnotationMirrors().nonEmpty()) { |
| buf.append(args.head.getAnnotationMirrors()); |
| } |
| buf.append("..."); |
| } else { |
| buf.append(args.head); |
| } |
| return buf.toString(); |
| } |
| |
| /** Access methods. |
| */ |
| public List<Type> getTypeArguments() { return List.nil(); } |
| public Type getEnclosingType() { return null; } |
| public List<Type> getParameterTypes() { return List.nil(); } |
| public Type getReturnType() { return null; } |
| public Type getReceiverType() { return null; } |
| public List<Type> getThrownTypes() { return List.nil(); } |
| public Type getUpperBound() { return null; } |
| public Type getLowerBound() { return null; } |
| |
| /** Navigation methods, these will work for classes, type variables, |
| * foralls, but will return null for arrays and methods. |
| */ |
| |
| /** Return all parameters of this type and all its outer types in order |
| * outer (first) to inner (last). |
| */ |
| public List<Type> allparams() { return List.nil(); } |
| |
| /** Does this type contain "error" elements? |
| */ |
| public boolean isErroneous() { |
| return false; |
| } |
| |
| public static boolean isErroneous(List<Type> ts) { |
| for (List<Type> l = ts; l.nonEmpty(); l = l.tail) |
| if (l.head.isErroneous()) return true; |
| return false; |
| } |
| |
| /** Is this type parameterized? |
| * A class type is parameterized if it has some parameters. |
| * An array type is parameterized if its element type is parameterized. |
| * All other types are not parameterized. |
| */ |
| public boolean isParameterized() { |
| return false; |
| } |
| |
| /** Is this type a raw type? |
| * A class type is a raw type if it misses some of its parameters. |
| * An array type is a raw type if its element type is raw. |
| * All other types are not raw. |
| * Type validation will ensure that the only raw types |
| * in a program are types that miss all their type variables. |
| */ |
| public boolean isRaw() { |
| return false; |
| } |
| |
| public boolean isCompound() { |
| return tsym.completer == null |
| // Compound types can't have a completer. Calling |
| // flags() will complete the symbol causing the |
| // compiler to load classes unnecessarily. This led |
| // to regression 6180021. |
| && (tsym.flags() & COMPOUND) != 0; |
| } |
| |
| public boolean isInterface() { |
| return (tsym.flags() & INTERFACE) != 0; |
| } |
| |
| public boolean isFinal() { |
| return (tsym.flags() & FINAL) != 0; |
| } |
| |
| /** |
| * Does this type contain occurrences of type t? |
| */ |
| public boolean contains(Type t) { |
| return t == this; |
| } |
| |
| public static boolean contains(List<Type> ts, Type t) { |
| for (List<Type> l = ts; |
| l.tail != null /*inlined: l.nonEmpty()*/; |
| l = l.tail) |
| if (l.head.contains(t)) return true; |
| return false; |
| } |
| |
| /** Does this type contain an occurrence of some type in 'ts'? |
| */ |
| public boolean containsAny(List<Type> ts) { |
| for (Type t : ts) |
| if (this.contains(t)) return true; |
| return false; |
| } |
| |
| public static boolean containsAny(List<Type> ts1, List<Type> ts2) { |
| for (Type t : ts1) |
| if (t.containsAny(ts2)) return true; |
| return false; |
| } |
| |
| public static List<Type> filter(List<Type> ts, Filter<Type> tf) { |
| ListBuffer<Type> buf = new ListBuffer<>(); |
| for (Type t : ts) { |
| if (tf.accepts(t)) { |
| buf.append(t); |
| } |
| } |
| return buf.toList(); |
| } |
| |
| public boolean isSuperBound() { return false; } |
| public boolean isExtendsBound() { return false; } |
| public boolean isUnbound() { return false; } |
| public Type withTypeVar(Type t) { return this; } |
| |
| /** The underlying method type of this type. |
| */ |
| public MethodType asMethodType() { throw new AssertionError(); } |
| |
| /** Complete loading all classes in this type. |
| */ |
| public void complete() {} |
| |
| public TypeSymbol asElement() { |
| return tsym; |
| } |
| |
| @Override |
| public TypeKind getKind() { |
| return TypeKind.OTHER; |
| } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| throw new AssertionError(); |
| } |
| |
| public static class JCPrimitiveType extends Type |
| implements javax.lang.model.type.PrimitiveType { |
| |
| TypeTag tag; |
| |
| public JCPrimitiveType(TypeTag tag, TypeSymbol tsym) { |
| super(tsym); |
| this.tag = tag; |
| Assert.check(tag.isPrimitive); |
| } |
| |
| @Override |
| public boolean isNumeric() { |
| return tag != BOOLEAN; |
| } |
| |
| @Override |
| public boolean isPrimitive() { |
| return true; |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return tag; |
| } |
| |
| @Override |
| public boolean isPrimitiveOrVoid() { |
| return true; |
| } |
| |
| /** Define a constant type, of the same kind as this type |
| * and with given constant value |
| */ |
| @Override |
| public Type constType(Object constValue) { |
| final Object value = constValue; |
| return new JCPrimitiveType(tag, tsym) { |
| @Override |
| public Object constValue() { |
| return value; |
| } |
| @Override |
| public Type baseType() { |
| return tsym.type; |
| } |
| }; |
| } |
| |
| /** |
| * The constant value of this type, converted to String |
| */ |
| @Override |
| public String stringValue() { |
| Object cv = Assert.checkNonNull(constValue()); |
| if (tag == BOOLEAN) { |
| return ((Integer) cv).intValue() == 0 ? "false" : "true"; |
| } |
| else if (tag == CHAR) { |
| return String.valueOf((char) ((Integer) cv).intValue()); |
| } |
| else { |
| return cv.toString(); |
| } |
| } |
| |
| /** Is this a constant type whose value is false? |
| */ |
| @Override |
| public boolean isFalse() { |
| return |
| tag == BOOLEAN && |
| constValue() != null && |
| ((Integer)constValue()).intValue() == 0; |
| } |
| |
| /** Is this a constant type whose value is true? |
| */ |
| @Override |
| public boolean isTrue() { |
| return |
| tag == BOOLEAN && |
| constValue() != null && |
| ((Integer)constValue()).intValue() != 0; |
| } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitPrimitive(this, p); |
| } |
| |
| @Override |
| public TypeKind getKind() { |
| switch (tag) { |
| case BYTE: return TypeKind.BYTE; |
| case CHAR: return TypeKind.CHAR; |
| case SHORT: return TypeKind.SHORT; |
| case INT: return TypeKind.INT; |
| case LONG: return TypeKind.LONG; |
| case FLOAT: return TypeKind.FLOAT; |
| case DOUBLE: return TypeKind.DOUBLE; |
| case BOOLEAN: return TypeKind.BOOLEAN; |
| } |
| throw new AssertionError(); |
| } |
| |
| } |
| |
| public static class WildcardType extends Type |
| implements javax.lang.model.type.WildcardType { |
| |
| public Type type; |
| public BoundKind kind; |
| public TypeVar bound; |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitWildcardType(this, s); |
| } |
| |
| public WildcardType(Type type, BoundKind kind, TypeSymbol tsym) { |
| super(tsym); |
| this.type = Assert.checkNonNull(type); |
| this.kind = kind; |
| } |
| public WildcardType(WildcardType t, TypeVar bound) { |
| this(t.type, t.kind, t.tsym, bound); |
| } |
| |
| public WildcardType(Type type, BoundKind kind, TypeSymbol tsym, TypeVar bound) { |
| this(type, kind, tsym); |
| this.bound = bound; |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return WILDCARD; |
| } |
| |
| @Override |
| public boolean contains(Type t) { |
| return kind != UNBOUND && type.contains(t); |
| } |
| |
| public boolean isSuperBound() { |
| return kind == SUPER || |
| kind == UNBOUND; |
| } |
| public boolean isExtendsBound() { |
| return kind == EXTENDS || |
| kind == UNBOUND; |
| } |
| public boolean isUnbound() { |
| return kind == UNBOUND; |
| } |
| |
| @Override |
| public boolean isReference() { |
| return true; |
| } |
| |
| @Override |
| public boolean isNullOrReference() { |
| return true; |
| } |
| |
| @Override |
| public Type withTypeVar(Type t) { |
| //-System.err.println(this+".withTypeVar("+t+");");//DEBUG |
| if (bound == t) |
| return this; |
| bound = (TypeVar)t; |
| return this; |
| } |
| |
| boolean isPrintingBound = false; |
| public String toString() { |
| StringBuilder s = new StringBuilder(); |
| s.append(kind.toString()); |
| if (kind != UNBOUND) |
| s.append(type); |
| if (moreInfo && bound != null && !isPrintingBound) |
| try { |
| isPrintingBound = true; |
| s.append("{:").append(bound.bound).append(":}"); |
| } finally { |
| isPrintingBound = false; |
| } |
| return s.toString(); |
| } |
| |
| public Type map(Mapping f) { |
| //- System.err.println(" (" + this + ").map(" + f + ")");//DEBUG |
| Type t = type; |
| if (t != null) |
| t = f.apply(t); |
| if (t == type) |
| return this; |
| else |
| return new WildcardType(t, kind, tsym, bound); |
| } |
| |
| public Type getExtendsBound() { |
| if (kind == EXTENDS) |
| return type; |
| else |
| return null; |
| } |
| |
| public Type getSuperBound() { |
| if (kind == SUPER) |
| return type; |
| else |
| return null; |
| } |
| |
| public TypeKind getKind() { |
| return TypeKind.WILDCARD; |
| } |
| |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitWildcard(this, p); |
| } |
| } |
| |
| public static class ClassType extends Type implements DeclaredType { |
| |
| /** 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; |
| |
| /** The type parameters of this type (to be set once class is loaded). |
| */ |
| public List<Type> typarams_field; |
| |
| /** A cache variable for the type parameters of this type, |
| * appended to all parameters of its enclosing class. |
| * @see #allparams |
| */ |
| public List<Type> allparams_field; |
| |
| /** The supertype of this class (to be set once class is loaded). |
| */ |
| public Type supertype_field; |
| |
| /** The interfaces of this class (to be set once class is loaded). |
| */ |
| public List<Type> interfaces_field; |
| |
| /** All the interfaces of this class, including missing ones. |
| */ |
| public List<Type> all_interfaces_field; |
| |
| public ClassType(Type outer, List<Type> typarams, TypeSymbol tsym) { |
| super(tsym); |
| this.outer_field = outer; |
| this.typarams_field = typarams; |
| this.allparams_field = null; |
| this.supertype_field = null; |
| this.interfaces_field = null; |
| /* |
| // this can happen during error recovery |
| assert |
| outer.isParameterized() ? |
| typarams.length() == tsym.type.typarams().length() : |
| outer.isRaw() ? |
| typarams.length() == 0 : |
| true; |
| */ |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return CLASS; |
| } |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitClassType(this, s); |
| } |
| |
| public Type constType(Object constValue) { |
| final Object value = constValue; |
| return new ClassType(getEnclosingType(), typarams_field, tsym) { |
| @Override |
| public Object constValue() { |
| return value; |
| } |
| @Override |
| public Type baseType() { |
| return tsym.type; |
| } |
| }; |
| } |
| |
| /** The Java source which this type represents. |
| */ |
| public String toString() { |
| StringBuilder buf = new StringBuilder(); |
| if (getEnclosingType().hasTag(CLASS) && tsym.owner.kind == TYP) { |
| buf.append(getEnclosingType().toString()); |
| buf.append("."); |
| buf.append(className(tsym, false)); |
| } else { |
| buf.append(className(tsym, true)); |
| } |
| if (getTypeArguments().nonEmpty()) { |
| buf.append('<'); |
| buf.append(getTypeArguments().toString()); |
| buf.append(">"); |
| } |
| return buf.toString(); |
| } |
| //where |
| private String className(Symbol sym, boolean longform) { |
| if (sym.name.isEmpty() && (sym.flags() & COMPOUND) != 0) { |
| StringBuilder s = new StringBuilder(supertype_field.toString()); |
| for (List<Type> is=interfaces_field; is.nonEmpty(); is = is.tail) { |
| s.append("&"); |
| s.append(is.head.toString()); |
| } |
| return s.toString(); |
| } else if (sym.name.isEmpty()) { |
| String s; |
| ClassType norm = (ClassType) tsym.type.unannotatedType(); |
| if (norm == null) { |
| s = Log.getLocalizedString("anonymous.class", (Object)null); |
| } else if (norm.interfaces_field != null && norm.interfaces_field.nonEmpty()) { |
| s = Log.getLocalizedString("anonymous.class", |
| norm.interfaces_field.head); |
| } else { |
| s = Log.getLocalizedString("anonymous.class", |
| norm.supertype_field); |
| } |
| if (moreInfo) |
| s += String.valueOf(sym.hashCode()); |
| return s; |
| } else if (longform) { |
| return sym.getQualifiedName().toString(); |
| } else { |
| return sym.name.toString(); |
| } |
| } |
| |
| public List<Type> getTypeArguments() { |
| if (typarams_field == null) { |
| complete(); |
| if (typarams_field == null) |
| typarams_field = List.nil(); |
| } |
| return typarams_field; |
| } |
| |
| public boolean hasErasedSupertypes() { |
| return isRaw(); |
| } |
| |
| public Type getEnclosingType() { |
| return outer_field; |
| } |
| |
| public void setEnclosingType(Type outer) { |
| outer_field = outer; |
| } |
| |
| public List<Type> allparams() { |
| if (allparams_field == null) { |
| allparams_field = getTypeArguments().prependList(getEnclosingType().allparams()); |
| } |
| return allparams_field; |
| } |
| |
| public boolean isErroneous() { |
| return |
| getEnclosingType().isErroneous() || |
| isErroneous(getTypeArguments()) || |
| this != tsym.type.unannotatedType() && tsym.type.isErroneous(); |
| } |
| |
| public boolean isParameterized() { |
| return allparams().tail != null; |
| // optimization, was: allparams().nonEmpty(); |
| } |
| |
| @Override |
| public boolean isReference() { |
| return true; |
| } |
| |
| @Override |
| public boolean isNullOrReference() { |
| return true; |
| } |
| |
| /** A cache for the rank. */ |
| int rank_field = -1; |
| |
| /** A class type is raw if it misses some |
| * of its type parameter sections. |
| * After validation, this is equivalent to: |
| * {@code allparams.isEmpty() && tsym.type.allparams.nonEmpty(); } |
| */ |
| public boolean isRaw() { |
| return |
| this != tsym.type && // necessary, but not sufficient condition |
| tsym.type.allparams().nonEmpty() && |
| allparams().isEmpty(); |
| } |
| |
| public Type map(Mapping f) { |
| Type outer = getEnclosingType(); |
| Type outer1 = f.apply(outer); |
| List<Type> typarams = getTypeArguments(); |
| List<Type> typarams1 = map(typarams, f); |
| if (outer1 == outer && typarams1 == typarams) return this; |
| else return new ClassType(outer1, typarams1, tsym); |
| } |
| |
| public boolean contains(Type elem) { |
| return |
| elem == this |
| || (isParameterized() |
| && (getEnclosingType().contains(elem) || contains(getTypeArguments(), elem))) |
| || (isCompound() |
| && (supertype_field.contains(elem) || contains(interfaces_field, elem))); |
| } |
| |
| public void complete() { |
| if (tsym.completer != null) tsym.complete(); |
| } |
| |
| public TypeKind getKind() { |
| return TypeKind.DECLARED; |
| } |
| |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitDeclared(this, p); |
| } |
| } |
| |
| public static class ErasedClassType extends ClassType { |
| public ErasedClassType(Type outer, TypeSymbol tsym) { |
| super(outer, List.<Type>nil(), tsym); |
| } |
| |
| @Override |
| public boolean hasErasedSupertypes() { |
| return true; |
| } |
| } |
| |
| // a clone of a ClassType that knows about the alternatives of a union type. |
| public static class UnionClassType extends ClassType implements UnionType { |
| final List<? extends Type> alternatives_field; |
| |
| public UnionClassType(ClassType ct, List<? extends Type> alternatives) { |
| super(ct.outer_field, ct.typarams_field, ct.tsym); |
| allparams_field = ct.allparams_field; |
| supertype_field = ct.supertype_field; |
| interfaces_field = ct.interfaces_field; |
| all_interfaces_field = ct.interfaces_field; |
| alternatives_field = alternatives; |
| } |
| |
| public Type getLub() { |
| return tsym.type; |
| } |
| |
| public java.util.List<? extends TypeMirror> getAlternatives() { |
| return Collections.unmodifiableList(alternatives_field); |
| } |
| |
| @Override |
| public TypeKind getKind() { |
| return TypeKind.UNION; |
| } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitUnion(this, p); |
| } |
| } |
| |
| // a clone of a ClassType that knows about the bounds of an intersection type. |
| public static class IntersectionClassType extends ClassType implements IntersectionType { |
| |
| public boolean allInterfaces; |
| |
| public IntersectionClassType(List<Type> bounds, ClassSymbol csym, boolean allInterfaces) { |
| super(Type.noType, List.<Type>nil(), csym); |
| this.allInterfaces = allInterfaces; |
| Assert.check((csym.flags() & COMPOUND) != 0); |
| supertype_field = bounds.head; |
| interfaces_field = bounds.tail; |
| Assert.check(supertype_field.tsym.completer != null || |
| !supertype_field.isInterface(), supertype_field); |
| } |
| |
| public java.util.List<? extends TypeMirror> getBounds() { |
| return Collections.unmodifiableList(getExplicitComponents()); |
| } |
| |
| public List<Type> getComponents() { |
| return interfaces_field.prepend(supertype_field); |
| } |
| |
| public List<Type> getExplicitComponents() { |
| return allInterfaces ? |
| interfaces_field : |
| getComponents(); |
| } |
| |
| @Override |
| public TypeKind getKind() { |
| return TypeKind.INTERSECTION; |
| } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitIntersection(this, p); |
| } |
| } |
| |
| public static class ArrayType extends Type |
| implements javax.lang.model.type.ArrayType { |
| |
| public Type elemtype; |
| |
| public ArrayType(Type elemtype, TypeSymbol arrayClass) { |
| super(arrayClass); |
| this.elemtype = elemtype; |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return ARRAY; |
| } |
| |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitArrayType(this, s); |
| } |
| |
| public String toString() { |
| return elemtype + "[]"; |
| } |
| |
| public boolean equals(Object obj) { |
| return |
| this == obj || |
| (obj instanceof ArrayType && |
| this.elemtype.equals(((ArrayType)obj).elemtype)); |
| } |
| |
| public int hashCode() { |
| return (ARRAY.ordinal() << 5) + elemtype.hashCode(); |
| } |
| |
| public boolean isVarargs() { |
| return false; |
| } |
| |
| public List<Type> allparams() { return elemtype.allparams(); } |
| |
| public boolean isErroneous() { |
| return elemtype.isErroneous(); |
| } |
| |
| public boolean isParameterized() { |
| return elemtype.isParameterized(); |
| } |
| |
| @Override |
| public boolean isReference() { |
| return true; |
| } |
| |
| @Override |
| public boolean isNullOrReference() { |
| return true; |
| } |
| |
| public boolean isRaw() { |
| return elemtype.isRaw(); |
| } |
| |
| public ArrayType makeVarargs() { |
| return new ArrayType(elemtype, tsym) { |
| @Override |
| public boolean isVarargs() { |
| return true; |
| } |
| }; |
| } |
| |
| public Type map(Mapping f) { |
| Type elemtype1 = f.apply(elemtype); |
| if (elemtype1 == elemtype) return this; |
| else return new ArrayType(elemtype1, tsym); |
| } |
| |
| public boolean contains(Type elem) { |
| return elem == this || elemtype.contains(elem); |
| } |
| |
| public void complete() { |
| elemtype.complete(); |
| } |
| |
| public Type getComponentType() { |
| return elemtype; |
| } |
| |
| public TypeKind getKind() { |
| return TypeKind.ARRAY; |
| } |
| |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitArray(this, p); |
| } |
| } |
| |
| public static class MethodType extends Type implements ExecutableType { |
| |
| public List<Type> argtypes; |
| public Type restype; |
| public List<Type> thrown; |
| |
| /** The type annotations on the method receiver. |
| */ |
| public Type recvtype; |
| |
| public MethodType(List<Type> argtypes, |
| Type restype, |
| List<Type> thrown, |
| TypeSymbol methodClass) { |
| super(methodClass); |
| this.argtypes = argtypes; |
| this.restype = restype; |
| this.thrown = thrown; |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return METHOD; |
| } |
| |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitMethodType(this, s); |
| } |
| |
| /** The Java source which this type represents. |
| * |
| * XXX 06/09/99 iris This isn't correct Java syntax, but it probably |
| * should be. |
| */ |
| public String toString() { |
| return "(" + argtypes + ")" + restype; |
| } |
| |
| public List<Type> getParameterTypes() { return argtypes; } |
| public Type getReturnType() { return restype; } |
| public Type getReceiverType() { return recvtype; } |
| public List<Type> getThrownTypes() { return thrown; } |
| |
| public boolean isErroneous() { |
| return |
| isErroneous(argtypes) || |
| restype != null && restype.isErroneous(); |
| } |
| |
| public Type map(Mapping f) { |
| List<Type> argtypes1 = map(argtypes, f); |
| Type restype1 = f.apply(restype); |
| List<Type> thrown1 = map(thrown, f); |
| if (argtypes1 == argtypes && |
| restype1 == restype && |
| thrown1 == thrown) return this; |
| else return new MethodType(argtypes1, restype1, thrown1, tsym); |
| } |
| |
| public boolean contains(Type elem) { |
| return elem == this || contains(argtypes, elem) || restype.contains(elem) || contains(thrown, elem); |
| } |
| |
| public MethodType asMethodType() { return this; } |
| |
| public void complete() { |
| for (List<Type> l = argtypes; l.nonEmpty(); l = l.tail) |
| l.head.complete(); |
| restype.complete(); |
| recvtype.complete(); |
| for (List<Type> l = thrown; l.nonEmpty(); l = l.tail) |
| l.head.complete(); |
| } |
| |
| public List<TypeVar> getTypeVariables() { |
| return List.nil(); |
| } |
| |
| public TypeSymbol asElement() { |
| return null; |
| } |
| |
| public TypeKind getKind() { |
| return TypeKind.EXECUTABLE; |
| } |
| |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitExecutable(this, p); |
| } |
| } |
| |
| public static class PackageType extends Type implements NoType { |
| |
| PackageType(TypeSymbol tsym) { |
| super(tsym); |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return PACKAGE; |
| } |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitPackageType(this, s); |
| } |
| |
| public String toString() { |
| return tsym.getQualifiedName().toString(); |
| } |
| |
| public TypeKind getKind() { |
| return TypeKind.PACKAGE; |
| } |
| |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitNoType(this, p); |
| } |
| } |
| |
| public static class TypeVar extends Type implements TypeVariable { |
| |
| /** The upper bound of this type variable; set from outside. |
| * Must be nonempty once it is set. |
| * For a bound, `bound' is the bound type itself. |
| * Multiple bounds are expressed as a single class type which has the |
| * individual bounds as superclass, respectively interfaces. |
| * The class type then has as `tsym' a compiler generated class `c', |
| * which has a flag COMPOUND and whose owner is the type variable |
| * itself. Furthermore, the erasure_field of the class |
| * points to the first class or interface bound. |
| */ |
| public Type bound = null; |
| |
| /** The lower bound of this type variable. |
| * TypeVars don't normally have a lower bound, so it is normally set |
| * to syms.botType. |
| * Subtypes, such as CapturedType, may provide a different value. |
| */ |
| public Type lower; |
| |
| public TypeVar(Name name, Symbol owner, Type lower) { |
| super(null); |
| tsym = new TypeVariableSymbol(0, name, this, owner); |
| this.lower = lower; |
| } |
| |
| public TypeVar(TypeSymbol tsym, Type bound, Type lower) { |
| super(tsym); |
| this.bound = bound; |
| this.lower = lower; |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return TYPEVAR; |
| } |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitTypeVar(this, s); |
| } |
| |
| @Override |
| public Type getUpperBound() { |
| if ((bound == null || bound.hasTag(NONE)) && this != tsym.type) { |
| bound = tsym.type.getUpperBound(); |
| } |
| return bound; |
| } |
| |
| int rank_field = -1; |
| |
| @Override |
| public Type getLowerBound() { |
| return lower; |
| } |
| |
| public TypeKind getKind() { |
| return TypeKind.TYPEVAR; |
| } |
| |
| public boolean isCaptured() { |
| return false; |
| } |
| |
| @Override |
| public boolean isReference() { |
| return true; |
| } |
| |
| @Override |
| public boolean isNullOrReference() { |
| return true; |
| } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitTypeVariable(this, p); |
| } |
| } |
| |
| /** A captured type variable comes from wildcards which can have |
| * both upper and lower bound. CapturedType extends TypeVar with |
| * a lower bound. |
| */ |
| public static class CapturedType extends TypeVar { |
| |
| public WildcardType wildcard; |
| |
| public CapturedType(Name name, |
| Symbol owner, |
| Type upper, |
| Type lower, |
| WildcardType wildcard) { |
| super(name, owner, lower); |
| this.lower = Assert.checkNonNull(lower); |
| this.bound = upper; |
| this.wildcard = wildcard; |
| } |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitCapturedType(this, s); |
| } |
| |
| @Override |
| public boolean isCaptured() { |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return "capture#" |
| + (hashCode() & 0xFFFFFFFFL) % Printer.PRIME |
| + " of " |
| + wildcard; |
| } |
| } |
| |
| public static abstract class DelegatedType extends Type { |
| public Type qtype; |
| public TypeTag tag; |
| public DelegatedType(TypeTag tag, Type qtype) { |
| super(qtype.tsym); |
| this.tag = tag; |
| this.qtype = qtype; |
| } |
| public TypeTag getTag() { return tag; } |
| public String toString() { return qtype.toString(); } |
| public List<Type> getTypeArguments() { return qtype.getTypeArguments(); } |
| public Type getEnclosingType() { return qtype.getEnclosingType(); } |
| public List<Type> getParameterTypes() { return qtype.getParameterTypes(); } |
| public Type getReturnType() { return qtype.getReturnType(); } |
| public Type getReceiverType() { return qtype.getReceiverType(); } |
| public List<Type> getThrownTypes() { return qtype.getThrownTypes(); } |
| public List<Type> allparams() { return qtype.allparams(); } |
| public Type getUpperBound() { return qtype.getUpperBound(); } |
| public boolean isErroneous() { return qtype.isErroneous(); } |
| } |
| |
| /** |
| * The type of a generic method type. It consists of a method type and |
| * a list of method type-parameters that are used within the method |
| * type. |
| */ |
| public static class ForAll extends DelegatedType implements ExecutableType { |
| public List<Type> tvars; |
| |
| public ForAll(List<Type> tvars, Type qtype) { |
| super(FORALL, (MethodType)qtype); |
| this.tvars = tvars; |
| } |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitForAll(this, s); |
| } |
| |
| public String toString() { |
| return "<" + tvars + ">" + qtype; |
| } |
| |
| public List<Type> getTypeArguments() { return tvars; } |
| |
| public boolean isErroneous() { |
| return qtype.isErroneous(); |
| } |
| |
| public Type map(Mapping f) { |
| return f.apply(qtype); |
| } |
| |
| public boolean contains(Type elem) { |
| return qtype.contains(elem); |
| } |
| |
| public MethodType asMethodType() { |
| return (MethodType)qtype; |
| } |
| |
| public void complete() { |
| for (List<Type> l = tvars; l.nonEmpty(); l = l.tail) { |
| ((TypeVar)l.head).bound.complete(); |
| } |
| qtype.complete(); |
| } |
| |
| public List<TypeVar> getTypeVariables() { |
| return List.convert(TypeVar.class, getTypeArguments()); |
| } |
| |
| public TypeKind getKind() { |
| return TypeKind.EXECUTABLE; |
| } |
| |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitExecutable(this, p); |
| } |
| } |
| |
| /** A class for inference variables, for use during method/diamond type |
| * inference. An inference variable has upper/lower bounds and a set |
| * of equality constraints. Such bounds are set during subtyping, type-containment, |
| * type-equality checks, when the types being tested contain inference variables. |
| * A change listener can be attached to an inference variable, to receive notifications |
| * whenever the bounds of an inference variable change. |
| */ |
| public static class UndetVar extends DelegatedType { |
| |
| /** Inference variable change listener. The listener method is called |
| * whenever a change to the inference variable's bounds occurs |
| */ |
| public interface UndetVarListener { |
| /** called when some inference variable bounds (of given kinds ibs) change */ |
| void varChanged(UndetVar uv, Set<InferenceBound> ibs); |
| } |
| |
| /** |
| * Inference variable bound kinds |
| */ |
| public enum InferenceBound { |
| /** upper bounds */ |
| UPPER, |
| /** lower bounds */ |
| LOWER, |
| /** equality constraints */ |
| EQ |
| } |
| |
| /** inference variable bounds */ |
| protected Map<InferenceBound, List<Type>> bounds; |
| |
| /** inference variable's inferred type (set from Infer.java) */ |
| public Type inst = null; |
| |
| /** number of declared (upper) bounds */ |
| public int declaredCount; |
| |
| /** inference variable's change listener */ |
| public UndetVarListener listener = null; |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitUndetVar(this, s); |
| } |
| |
| public UndetVar(TypeVar origin, Types types) { |
| super(UNDETVAR, origin); |
| bounds = new EnumMap<>(InferenceBound.class); |
| List<Type> declaredBounds = types.getBounds(origin); |
| declaredCount = declaredBounds.length(); |
| bounds.put(InferenceBound.UPPER, declaredBounds); |
| bounds.put(InferenceBound.LOWER, List.<Type>nil()); |
| bounds.put(InferenceBound.EQ, List.<Type>nil()); |
| } |
| |
| public String toString() { |
| if (inst != null) return inst.toString(); |
| else return qtype + "?"; |
| } |
| |
| @Override |
| public boolean isPartial() { |
| return true; |
| } |
| |
| @Override |
| public Type baseType() { |
| if (inst != null) return inst.baseType(); |
| else return this; |
| } |
| |
| /** get all bounds of a given kind */ |
| public List<Type> getBounds(InferenceBound... ibs) { |
| ListBuffer<Type> buf = new ListBuffer<>(); |
| for (InferenceBound ib : ibs) { |
| buf.appendList(bounds.get(ib)); |
| } |
| return buf.toList(); |
| } |
| |
| /** get the list of declared (upper) bounds */ |
| public List<Type> getDeclaredBounds() { |
| ListBuffer<Type> buf = new ListBuffer<>(); |
| int count = 0; |
| for (Type b : getBounds(InferenceBound.UPPER)) { |
| if (count++ == declaredCount) break; |
| buf.append(b); |
| } |
| return buf.toList(); |
| } |
| |
| /** internal method used to override an undetvar bounds */ |
| public void setBounds(InferenceBound ib, List<Type> newBounds) { |
| bounds.put(ib, newBounds); |
| } |
| |
| /** add a bound of a given kind - this might trigger listener notification */ |
| public final void addBound(InferenceBound ib, Type bound, Types types) { |
| addBound(ib, bound, types, false); |
| } |
| |
| protected void addBound(InferenceBound ib, Type bound, Types types, boolean update) { |
| Type bound2 = toTypeVarMap.apply(bound).baseType(); |
| List<Type> prevBounds = bounds.get(ib); |
| for (Type b : prevBounds) { |
| //check for redundancy - use strict version of isSameType on tvars |
| //(as the standard version will lead to false positives w.r.t. clones ivars) |
| if (types.isSameType(b, bound2, true) || bound == qtype) return; |
| } |
| bounds.put(ib, prevBounds.prepend(bound2)); |
| notifyChange(EnumSet.of(ib)); |
| } |
| //where |
| Type.Mapping toTypeVarMap = new Mapping("toTypeVarMap") { |
| @Override |
| public Type apply(Type t) { |
| if (t.hasTag(UNDETVAR)) { |
| UndetVar uv = (UndetVar)t; |
| return uv.inst != null ? uv.inst : uv.qtype; |
| } else { |
| return t.map(this); |
| } |
| } |
| }; |
| |
| /** replace types in all bounds - this might trigger listener notification */ |
| public void substBounds(List<Type> from, List<Type> to, Types types) { |
| List<Type> instVars = from.diff(to); |
| //if set of instantiated ivars is empty, there's nothing to do! |
| if (instVars.isEmpty()) return; |
| final EnumSet<InferenceBound> boundsChanged = EnumSet.noneOf(InferenceBound.class); |
| UndetVarListener prevListener = listener; |
| try { |
| //setup new listener for keeping track of changed bounds |
| listener = new UndetVarListener() { |
| public void varChanged(UndetVar uv, Set<InferenceBound> ibs) { |
| boundsChanged.addAll(ibs); |
| } |
| }; |
| for (Map.Entry<InferenceBound, List<Type>> _entry : bounds.entrySet()) { |
| InferenceBound ib = _entry.getKey(); |
| List<Type> prevBounds = _entry.getValue(); |
| ListBuffer<Type> newBounds = new ListBuffer<>(); |
| ListBuffer<Type> deps = new ListBuffer<>(); |
| //step 1 - re-add bounds that are not dependent on ivars |
| for (Type t : prevBounds) { |
| if (!t.containsAny(instVars)) { |
| newBounds.append(t); |
| } else { |
| deps.append(t); |
| } |
| } |
| //step 2 - replace bounds |
| bounds.put(ib, newBounds.toList()); |
| //step 3 - for each dependency, add new replaced bound |
| for (Type dep : deps) { |
| addBound(ib, types.subst(dep, from, to), types, true); |
| } |
| } |
| } finally { |
| listener = prevListener; |
| if (!boundsChanged.isEmpty()) { |
| notifyChange(boundsChanged); |
| } |
| } |
| } |
| |
| private void notifyChange(EnumSet<InferenceBound> ibs) { |
| if (listener != null) { |
| listener.varChanged(this, ibs); |
| } |
| } |
| |
| public boolean isCaptured() { |
| return false; |
| } |
| } |
| |
| /** |
| * This class is used to represent synthetic captured inference variables |
| * that can be generated during nested generic method calls. The only difference |
| * between these inference variables and ordinary ones is that captured inference |
| * variables cannot get new bounds through incorporation. |
| */ |
| public static class CapturedUndetVar extends UndetVar { |
| |
| public CapturedUndetVar(CapturedType origin, Types types) { |
| super(origin, types); |
| if (!origin.lower.hasTag(BOT)) { |
| bounds.put(InferenceBound.LOWER, List.of(origin.lower)); |
| } |
| } |
| |
| @Override |
| public void addBound(InferenceBound ib, Type bound, Types types, boolean update) { |
| if (update) { |
| //only change bounds if request comes from substBounds |
| super.addBound(ib, bound, types, update); |
| } |
| } |
| |
| @Override |
| public boolean isCaptured() { |
| return true; |
| } |
| } |
| |
| /** Represents NONE. |
| */ |
| public static class JCNoType extends Type implements NoType { |
| public JCNoType() { |
| super(null); |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return NONE; |
| } |
| |
| @Override |
| public TypeKind getKind() { |
| return TypeKind.NONE; |
| } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitNoType(this, p); |
| } |
| |
| @Override |
| public boolean isCompound() { return false; } |
| } |
| |
| /** Represents VOID. |
| */ |
| public static class JCVoidType extends Type implements NoType { |
| |
| public JCVoidType() { |
| super(null); |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return VOID; |
| } |
| |
| @Override |
| public TypeKind getKind() { |
| return TypeKind.VOID; |
| } |
| |
| @Override |
| public boolean isCompound() { return false; } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitNoType(this, p); |
| } |
| |
| @Override |
| public boolean isPrimitiveOrVoid() { |
| return true; |
| } |
| } |
| |
| static class BottomType extends Type implements NullType { |
| public BottomType() { |
| super(null); |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return BOT; |
| } |
| |
| @Override |
| public TypeKind getKind() { |
| return TypeKind.NULL; |
| } |
| |
| @Override |
| public boolean isCompound() { return false; } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitNull(this, p); |
| } |
| |
| @Override |
| public Type constType(Object value) { |
| return this; |
| } |
| |
| @Override |
| public String stringValue() { |
| return "null"; |
| } |
| |
| @Override |
| public boolean isNullOrReference() { |
| return true; |
| } |
| |
| } |
| |
| public static class ErrorType extends ClassType |
| implements javax.lang.model.type.ErrorType { |
| |
| private Type originalType = null; |
| |
| public ErrorType(Type originalType, TypeSymbol tsym) { |
| super(noType, List.<Type>nil(), null); |
| this.tsym = tsym; |
| this.originalType = (originalType == null ? noType : originalType); |
| } |
| |
| public ErrorType(ClassSymbol c, Type originalType) { |
| this(originalType, c); |
| c.type = this; |
| c.kind = ERR; |
| c.members_field = new Scope.ErrorScope(c); |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return ERROR; |
| } |
| |
| @Override |
| public boolean isPartial() { |
| return true; |
| } |
| |
| @Override |
| public boolean isReference() { |
| return true; |
| } |
| |
| @Override |
| public boolean isNullOrReference() { |
| return true; |
| } |
| |
| public ErrorType(Name name, TypeSymbol container, Type originalType) { |
| this(new ClassSymbol(PUBLIC|STATIC|ACYCLIC, name, null, container), originalType); |
| } |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitErrorType(this, s); |
| } |
| |
| public Type constType(Object constValue) { return this; } |
| public Type getEnclosingType() { return this; } |
| public Type getReturnType() { return this; } |
| public Type asSub(Symbol sym) { return this; } |
| public Type map(Mapping f) { return this; } |
| |
| public boolean isGenType(Type t) { return true; } |
| public boolean isErroneous() { return true; } |
| public boolean isCompound() { return false; } |
| public boolean isInterface() { return false; } |
| |
| public List<Type> allparams() { return List.nil(); } |
| public List<Type> getTypeArguments() { return List.nil(); } |
| |
| public TypeKind getKind() { |
| return TypeKind.ERROR; |
| } |
| |
| public Type getOriginalType() { |
| return originalType; |
| } |
| |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitError(this, p); |
| } |
| } |
| |
| public static class AnnotatedType extends Type |
| implements |
| javax.lang.model.type.ArrayType, |
| javax.lang.model.type.DeclaredType, |
| javax.lang.model.type.PrimitiveType, |
| javax.lang.model.type.TypeVariable, |
| javax.lang.model.type.WildcardType { |
| /** The type annotations on this type. |
| */ |
| private List<Attribute.TypeCompound> typeAnnotations; |
| |
| /** The underlying type that is annotated. |
| */ |
| private Type underlyingType; |
| |
| protected AnnotatedType(List<Attribute.TypeCompound> typeAnnotations, |
| Type underlyingType) { |
| super(underlyingType.tsym); |
| this.typeAnnotations = typeAnnotations; |
| this.underlyingType = underlyingType; |
| Assert.check(typeAnnotations != null && typeAnnotations.nonEmpty(), |
| "Can't create AnnotatedType without annotations: " + underlyingType); |
| Assert.check(!underlyingType.isAnnotated(), |
| "Can't annotate already annotated type: " + underlyingType + |
| "; adding: " + typeAnnotations); |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return underlyingType.getTag(); |
| } |
| |
| @Override |
| public boolean isAnnotated() { |
| return true; |
| } |
| |
| @Override |
| public List<Attribute.TypeCompound> getAnnotationMirrors() { |
| return typeAnnotations; |
| } |
| |
| |
| @Override |
| public TypeKind getKind() { |
| return underlyingType.getKind(); |
| } |
| |
| @Override |
| public Type unannotatedType() { |
| return underlyingType; |
| } |
| |
| @Override |
| public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
| return v.visitAnnotatedType(this, s); |
| } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return underlyingType.accept(v, p); |
| } |
| |
| @Override |
| public Type map(Mapping f) { |
| underlyingType.map(f); |
| return this; |
| } |
| |
| @Override |
| public Type constType(Object constValue) { return underlyingType.constType(constValue); } |
| @Override |
| public Type getEnclosingType() { return underlyingType.getEnclosingType(); } |
| |
| @Override |
| public Type getReturnType() { return underlyingType.getReturnType(); } |
| @Override |
| public List<Type> getTypeArguments() { return underlyingType.getTypeArguments(); } |
| @Override |
| public List<Type> getParameterTypes() { return underlyingType.getParameterTypes(); } |
| @Override |
| public Type getReceiverType() { return underlyingType.getReceiverType(); } |
| @Override |
| public List<Type> getThrownTypes() { return underlyingType.getThrownTypes(); } |
| @Override |
| public Type getUpperBound() { return underlyingType.getUpperBound(); } |
| @Override |
| public Type getLowerBound() { return underlyingType.getLowerBound(); } |
| |
| @Override |
| public boolean isErroneous() { return underlyingType.isErroneous(); } |
| @Override |
| public boolean isCompound() { return underlyingType.isCompound(); } |
| @Override |
| public boolean isInterface() { return underlyingType.isInterface(); } |
| @Override |
| public List<Type> allparams() { return underlyingType.allparams(); } |
| @Override |
| public boolean isPrimitive() { return underlyingType.isPrimitive(); } |
| @Override |
| public boolean isPrimitiveOrVoid() { return underlyingType.isPrimitiveOrVoid(); } |
| @Override |
| public boolean isNumeric() { return underlyingType.isNumeric(); } |
| @Override |
| public boolean isReference() { return underlyingType.isReference(); } |
| @Override |
| public boolean isNullOrReference() { return underlyingType.isNullOrReference(); } |
| @Override |
| public boolean isPartial() { return underlyingType.isPartial(); } |
| @Override |
| public boolean isParameterized() { return underlyingType.isParameterized(); } |
| @Override |
| public boolean isRaw() { return underlyingType.isRaw(); } |
| @Override |
| public boolean isFinal() { return underlyingType.isFinal(); } |
| @Override |
| public boolean isSuperBound() { return underlyingType.isSuperBound(); } |
| @Override |
| public boolean isExtendsBound() { return underlyingType.isExtendsBound(); } |
| @Override |
| public boolean isUnbound() { return underlyingType.isUnbound(); } |
| |
| @Override |
| public String toString() { |
| // This method is only used for internal debugging output. |
| // See |
| // com.sun.tools.javac.code.Printer.visitAnnotatedType(AnnotatedType, Locale) |
| // for the user-visible logic. |
| if (typeAnnotations != null && |
| !typeAnnotations.isEmpty()) { |
| return "(" + typeAnnotations.toString() + " :: " + underlyingType.toString() + ")"; |
| } else { |
| return "({} :: " + underlyingType.toString() +")"; |
| } |
| } |
| |
| @Override |
| public boolean contains(Type t) { return underlyingType.contains(t); } |
| |
| @Override |
| public Type withTypeVar(Type t) { |
| // Don't create a new AnnotatedType, as 'this' will |
| // get its annotations set later. |
| underlyingType = underlyingType.withTypeVar(t); |
| return this; |
| } |
| |
| // TODO: attach annotations? |
| @Override |
| public TypeSymbol asElement() { return underlyingType.asElement(); } |
| |
| // TODO: attach annotations? |
| @Override |
| public MethodType asMethodType() { return underlyingType.asMethodType(); } |
| |
| @Override |
| public void complete() { underlyingType.complete(); } |
| |
| @Override |
| public TypeMirror getComponentType() { return ((ArrayType)underlyingType).getComponentType(); } |
| |
| // The result is an ArrayType, but only in the model sense, not the Type sense. |
| public Type makeVarargs() { |
| return ((ArrayType) underlyingType).makeVarargs().annotatedType(typeAnnotations); |
| } |
| |
| @Override |
| public TypeMirror getExtendsBound() { return ((WildcardType)underlyingType).getExtendsBound(); } |
| @Override |
| public TypeMirror getSuperBound() { return ((WildcardType)underlyingType).getSuperBound(); } |
| } |
| |
| public static class UnknownType extends Type { |
| |
| public UnknownType() { |
| super(null); |
| } |
| |
| @Override |
| public TypeTag getTag() { |
| return UNKNOWN; |
| } |
| |
| @Override |
| public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| return v.visitUnknown(this, p); |
| } |
| |
| @Override |
| public boolean isPartial() { |
| return true; |
| } |
| } |
| |
| /** |
| * A visitor for types. A visitor is used to implement operations |
| * (or relations) on types. Most common operations on types are |
| * binary relations and this interface is designed for binary |
| * relations, that is, operations of the form |
| * Type × S → R. |
| * <!-- In plain text: Type x S -> R --> |
| * |
| * @param <R> the return type of the operation implemented by this |
| * visitor; use Void if no return type is needed. |
| * @param <S> the type of the second argument (the first being the |
| * type itself) of the operation implemented by this visitor; use |
| * Void if a second argument is not needed. |
| */ |
| public interface Visitor<R,S> { |
| R visitClassType(ClassType t, S s); |
| R visitWildcardType(WildcardType t, S s); |
| R visitArrayType(ArrayType t, S s); |
| R visitMethodType(MethodType t, S s); |
| R visitPackageType(PackageType t, S s); |
| R visitTypeVar(TypeVar t, S s); |
| R visitCapturedType(CapturedType t, S s); |
| R visitForAll(ForAll t, S s); |
| R visitUndetVar(UndetVar t, S s); |
| R visitErrorType(ErrorType t, S s); |
| R visitAnnotatedType(AnnotatedType t, S s); |
| R visitType(Type t, S s); |
| } |
| } |
