author | jjg |
Tue, 09 Sep 2008 10:28:21 -0700 | |
changeset 1257 | 873b053bf757 |
parent 1045 | 56f6e84f7825 |
child 1260 | a772ba9ba43d |
permissions | -rw-r--r-- |
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/* |
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* Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package com.sun.tools.javac.code; |
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import java.util.Set; |
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import java.util.concurrent.Callable; |
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import javax.lang.model.element.*; |
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import javax.tools.JavaFileObject; |
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import com.sun.tools.javac.util.*; |
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import com.sun.tools.javac.util.Name; |
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import com.sun.tools.javac.code.Type.*; |
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import com.sun.tools.javac.comp.Attr; |
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import com.sun.tools.javac.comp.AttrContext; |
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import com.sun.tools.javac.comp.Env; |
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import com.sun.tools.javac.jvm.*; |
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import com.sun.tools.javac.model.*; |
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import com.sun.tools.javac.tree.JCTree; |
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import static com.sun.tools.javac.code.Flags.*; |
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import static com.sun.tools.javac.code.Kinds.*; |
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import static com.sun.tools.javac.code.TypeTags.*; |
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/** Root class for Java symbols. It contains subclasses |
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* for specific sorts of symbols, such as variables, methods and operators, |
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* types, packages. Each subclass is represented as a static inner class |
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* inside Symbol. |
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* |
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* <p><b>This is NOT part of any API supported by Sun Microsystems. If |
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* you write code that depends on this, you do so at your own risk. |
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* This code and its internal interfaces are subject to change or |
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* deletion without notice.</b> |
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*/ |
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public abstract class Symbol implements Element { |
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// public Throwable debug = new Throwable(); |
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/** The kind of this symbol. |
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* @see Kinds |
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*/ |
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public int kind; |
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/** The flags of this symbol. |
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*/ |
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public long flags_field; |
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/** An accessor method for the flags of this symbol. |
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* Flags of class symbols should be accessed through the accessor |
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* method to make sure that the class symbol is loaded. |
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*/ |
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public long flags() { return flags_field; } |
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/** The attributes of this symbol. |
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*/ |
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public List<Attribute.Compound> attributes_field; |
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/** An accessor method for the attributes of this symbol. |
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* Attributes of class symbols should be accessed through the accessor |
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* method to make sure that the class symbol is loaded. |
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*/ |
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public List<Attribute.Compound> getAnnotationMirrors() { |
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assert attributes_field != null; |
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return attributes_field; |
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} |
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/** Fetch a particular annotation from a symbol. */ |
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public Attribute.Compound attribute(Symbol anno) { |
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for (Attribute.Compound a : getAnnotationMirrors()) |
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if (a.type.tsym == anno) return a; |
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return null; |
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} |
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/** The name of this symbol in Utf8 representation. |
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*/ |
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public Name name; |
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/** The type of this symbol. |
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*/ |
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public Type type; |
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/** The owner of this symbol. |
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*/ |
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public Symbol owner; |
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/** The completer of this symbol. |
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*/ |
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public Completer completer; |
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/** A cache for the type erasure of this symbol. |
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*/ |
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public Type erasure_field; |
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/** Construct a symbol with given kind, flags, name, type and owner. |
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*/ |
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public Symbol(int kind, long flags, Name name, Type type, Symbol owner) { |
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this.kind = kind; |
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this.flags_field = flags; |
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this.type = type; |
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this.owner = owner; |
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this.completer = null; |
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this.erasure_field = null; |
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this.attributes_field = List.nil(); |
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this.name = name; |
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} |
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/** Clone this symbol with new owner. |
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* Legal only for fields and methods. |
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*/ |
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public Symbol clone(Symbol newOwner) { |
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throw new AssertionError(); |
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} |
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/** The Java source which this symbol represents. |
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* A description of this symbol; overrides Object. |
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*/ |
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public String toString() { |
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return name.toString(); |
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} |
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/** A Java source description of the location of this symbol; used for |
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* error reporting. |
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* |
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* @return null if the symbol is a package or a toplevel class defined in |
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* the default package; otherwise, the owner symbol is returned |
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*/ |
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public Symbol location() { |
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if (owner.name == null || (owner.name.len == 0 && owner.kind != PCK)) { |
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return null; |
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} |
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return owner; |
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} |
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public Symbol location(Type site, Types types) { |
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if (owner.name == null || owner.name.len == 0) { |
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return location(); |
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} |
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if (owner.type.tag == CLASS) { |
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Type ownertype = types.asOuterSuper(site, owner); |
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if (ownertype != null) return ownertype.tsym; |
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} |
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return owner; |
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} |
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/** The symbol's erased type. |
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*/ |
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public Type erasure(Types types) { |
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if (erasure_field == null) |
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erasure_field = types.erasure(type); |
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return erasure_field; |
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} |
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/** The external type of a symbol. This is the symbol's erased type |
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* except for constructors of inner classes which get the enclosing |
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* instance class added as first argument. |
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*/ |
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public Type externalType(Types types) { |
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Type t = erasure(types); |
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if (name == name.table.init && owner.hasOuterInstance()) { |
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Type outerThisType = types.erasure(owner.type.getEnclosingType()); |
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return new MethodType(t.getParameterTypes().prepend(outerThisType), |
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t.getReturnType(), |
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t.getThrownTypes(), |
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t.tsym); |
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} else { |
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return t; |
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} |
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} |
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public boolean isStatic() { |
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return |
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(flags() & STATIC) != 0 || |
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(owner.flags() & INTERFACE) != 0 && kind != MTH; |
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} |
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public boolean isInterface() { |
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return (flags() & INTERFACE) != 0; |
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} |
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/** Is this symbol declared (directly or indirectly) local |
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* to a method or variable initializer? |
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* Also includes fields of inner classes which are in |
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* turn local to a method or variable initializer. |
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*/ |
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public boolean isLocal() { |
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return |
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(owner.kind & (VAR | MTH)) != 0 || |
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(owner.kind == TYP && owner.isLocal()); |
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} |
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/** Is this symbol a constructor? |
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*/ |
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public boolean isConstructor() { |
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return name == name.table.init; |
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} |
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/** The fully qualified name of this symbol. |
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* This is the same as the symbol's name except for class symbols, |
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* which are handled separately. |
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*/ |
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public Name getQualifiedName() { |
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return name; |
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} |
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/** The fully qualified name of this symbol after converting to flat |
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* representation. This is the same as the symbol's name except for |
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* class symbols, which are handled separately. |
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*/ |
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public Name flatName() { |
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return getQualifiedName(); |
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} |
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/** If this is a class or package, its members, otherwise null. |
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*/ |
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public Scope members() { |
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return null; |
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} |
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/** A class is an inner class if it it has an enclosing instance class. |
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*/ |
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public boolean isInner() { |
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return type.getEnclosingType().tag == CLASS; |
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} |
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/** An inner class has an outer instance if it is not an interface |
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* it has an enclosing instance class which might be referenced from the class. |
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* Nested classes can see instance members of their enclosing class. |
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* Their constructors carry an additional this$n parameter, inserted |
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* implicitly by the compiler. |
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* |
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* @see #isInner |
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*/ |
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public boolean hasOuterInstance() { |
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return |
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type.getEnclosingType().tag == CLASS && (flags() & (INTERFACE | NOOUTERTHIS)) == 0; |
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} |
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/** The closest enclosing class of this symbol's declaration. |
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*/ |
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public ClassSymbol enclClass() { |
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Symbol c = this; |
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while (c != null && |
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((c.kind & TYP) == 0 || c.type.tag != CLASS)) { |
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c = c.owner; |
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} |
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return (ClassSymbol)c; |
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} |
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/** The outermost class which indirectly owns this symbol. |
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*/ |
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public ClassSymbol outermostClass() { |
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Symbol sym = this; |
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Symbol prev = null; |
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while (sym.kind != PCK) { |
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prev = sym; |
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sym = sym.owner; |
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} |
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return (ClassSymbol) prev; |
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} |
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/** The package which indirectly owns this symbol. |
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*/ |
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public PackageSymbol packge() { |
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Symbol sym = this; |
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while (sym.kind != PCK) { |
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sym = sym.owner; |
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} |
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return (PackageSymbol) sym; |
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} |
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/** Is this symbol a subclass of `base'? Only defined for ClassSymbols. |
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*/ |
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public boolean isSubClass(Symbol base, Types types) { |
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throw new AssertionError("isSubClass " + this); |
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} |
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/** Fully check membership: hierarchy, protection, and hiding. |
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* Does not exclude methods not inherited due to overriding. |
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*/ |
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public boolean isMemberOf(TypeSymbol clazz, Types types) { |
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return |
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owner == clazz || |
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clazz.isSubClass(owner, types) && |
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isInheritedIn(clazz, types) && |
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!hiddenIn((ClassSymbol)clazz, types); |
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} |
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308 |
||
309 |
/** Is this symbol the same as or enclosed by the given class? */ |
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310 |
public boolean isEnclosedBy(ClassSymbol clazz) { |
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311 |
for (Symbol sym = this; sym.kind != PCK; sym = sym.owner) |
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if (sym == clazz) return true; |
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return false; |
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} |
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||
316 |
/** Check for hiding. Note that this doesn't handle multiple |
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* (interface) inheritance. */ |
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318 |
private boolean hiddenIn(ClassSymbol clazz, Types types) { |
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if (kind == MTH && (flags() & STATIC) == 0) return false; |
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320 |
while (true) { |
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if (owner == clazz) return false; |
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Scope.Entry e = clazz.members().lookup(name); |
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while (e.scope != null) { |
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if (e.sym == this) return false; |
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325 |
if (e.sym.kind == kind && |
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(kind != MTH || |
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(e.sym.flags() & STATIC) != 0 && |
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types.isSubSignature(e.sym.type, type))) |
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329 |
return true; |
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e = e.next(); |
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331 |
} |
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332 |
Type superType = types.supertype(clazz.type); |
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333 |
if (superType.tag != TypeTags.CLASS) return false; |
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334 |
clazz = (ClassSymbol)superType.tsym; |
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335 |
} |
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336 |
} |
|
337 |
||
338 |
/** Is this symbol inherited into a given class? |
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339 |
* PRE: If symbol's owner is a interface, |
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340 |
* it is already assumed that the interface is a superinterface |
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* of given class. |
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* @param clazz The class for which we want to establish membership. |
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* This must be a subclass of the member's owner. |
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344 |
*/ |
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345 |
public boolean isInheritedIn(Symbol clazz, Types types) { |
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346 |
switch ((int)(flags_field & Flags.AccessFlags)) { |
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default: // error recovery |
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348 |
case PUBLIC: |
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349 |
return true; |
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350 |
case PRIVATE: |
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351 |
return this.owner == clazz; |
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case PROTECTED: |
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// we model interfaces as extending Object |
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return (clazz.flags() & INTERFACE) == 0; |
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case 0: |
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PackageSymbol thisPackage = this.packge(); |
|
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for (Symbol sup = clazz; |
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sup != null && sup != this.owner; |
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sup = types.supertype(sup.type).tsym) { |
|
360 |
if (sup.type.isErroneous()) |
|
361 |
return true; // error recovery |
|
362 |
if ((sup.flags() & COMPOUND) != 0) |
|
363 |
continue; |
|
364 |
if (sup.packge() != thisPackage) |
|
365 |
return false; |
|
366 |
} |
|
367 |
return (clazz.flags() & INTERFACE) == 0; |
|
368 |
} |
|
369 |
} |
|
370 |
||
371 |
/** The (variable or method) symbol seen as a member of given |
|
372 |
* class type`site' (this might change the symbol's type). |
|
373 |
* This is used exclusively for producing diagnostics. |
|
374 |
*/ |
|
375 |
public Symbol asMemberOf(Type site, Types types) { |
|
376 |
throw new AssertionError(); |
|
377 |
} |
|
378 |
||
379 |
/** Does this method symbol override `other' symbol, when both are seen as |
|
380 |
* members of class `origin'? It is assumed that _other is a member |
|
381 |
* of origin. |
|
382 |
* |
|
383 |
* It is assumed that both symbols have the same name. The static |
|
384 |
* modifier is ignored for this test. |
|
385 |
* |
|
386 |
* See JLS 8.4.6.1 (without transitivity) and 8.4.6.4 |
|
387 |
*/ |
|
388 |
public boolean overrides(Symbol _other, TypeSymbol origin, Types types, boolean checkResult) { |
|
389 |
return false; |
|
390 |
} |
|
391 |
||
392 |
/** Complete the elaboration of this symbol's definition. |
|
393 |
*/ |
|
394 |
public void complete() throws CompletionFailure { |
|
395 |
if (completer != null) { |
|
396 |
Completer c = completer; |
|
397 |
completer = null; |
|
398 |
c.complete(this); |
|
399 |
} |
|
400 |
} |
|
401 |
||
402 |
/** True if the symbol represents an entity that exists. |
|
403 |
*/ |
|
404 |
public boolean exists() { |
|
405 |
return true; |
|
406 |
} |
|
407 |
||
408 |
public Type asType() { |
|
409 |
return type; |
|
410 |
} |
|
411 |
||
412 |
public Symbol getEnclosingElement() { |
|
413 |
return owner; |
|
414 |
} |
|
415 |
||
416 |
public ElementKind getKind() { |
|
417 |
return ElementKind.OTHER; // most unkind |
|
418 |
} |
|
419 |
||
420 |
public Set<Modifier> getModifiers() { |
|
421 |
return Flags.asModifierSet(flags()); |
|
422 |
} |
|
423 |
||
424 |
public Name getSimpleName() { |
|
425 |
return name; |
|
426 |
} |
|
427 |
||
428 |
/** |
|
429 |
* @deprecated this method should never be used by javac internally. |
|
430 |
*/ |
|
431 |
@Deprecated |
|
432 |
public <A extends java.lang.annotation.Annotation> A getAnnotation(Class<A> annoType) { |
|
433 |
return JavacElements.getAnnotation(this, annoType); |
|
434 |
} |
|
435 |
||
436 |
// TODO: getEnclosedElements should return a javac List, fix in FilteredMemberList |
|
437 |
public java.util.List<Symbol> getEnclosedElements() { |
|
438 |
return List.nil(); |
|
439 |
} |
|
440 |
||
441 |
public List<TypeSymbol> getTypeParameters() { |
|
442 |
ListBuffer<TypeSymbol> l = ListBuffer.lb(); |
|
443 |
for (Type t : type.getTypeArguments()) { |
|
444 |
l.append(t.tsym); |
|
445 |
} |
|
446 |
return l.toList(); |
|
447 |
} |
|
448 |
||
449 |
public static class DelegatedSymbol extends Symbol { |
|
450 |
protected Symbol other; |
|
451 |
public DelegatedSymbol(Symbol other) { |
|
452 |
super(other.kind, other.flags_field, other.name, other.type, other.owner); |
|
453 |
this.other = other; |
|
454 |
} |
|
455 |
public String toString() { return other.toString(); } |
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changeset
|
456 |
public Symbol location() { return other.location(); } |
38e24969c7e9
6717241: some diagnostic argument is prematurely converted into a String object
mcimadamore
parents:
735
diff
changeset
|
457 |
public Symbol location(Type site, Types types) { return other.location(site, types); } |
10 | 458 |
public Type erasure(Types types) { return other.erasure(types); } |
459 |
public Type externalType(Types types) { return other.externalType(types); } |
|
460 |
public boolean isLocal() { return other.isLocal(); } |
|
461 |
public boolean isConstructor() { return other.isConstructor(); } |
|
462 |
public Name getQualifiedName() { return other.getQualifiedName(); } |
|
463 |
public Name flatName() { return other.flatName(); } |
|
464 |
public Scope members() { return other.members(); } |
|
465 |
public boolean isInner() { return other.isInner(); } |
|
466 |
public boolean hasOuterInstance() { return other.hasOuterInstance(); } |
|
467 |
public ClassSymbol enclClass() { return other.enclClass(); } |
|
468 |
public ClassSymbol outermostClass() { return other.outermostClass(); } |
|
469 |
public PackageSymbol packge() { return other.packge(); } |
|
470 |
public boolean isSubClass(Symbol base, Types types) { return other.isSubClass(base, types); } |
|
471 |
public boolean isMemberOf(TypeSymbol clazz, Types types) { return other.isMemberOf(clazz, types); } |
|
472 |
public boolean isEnclosedBy(ClassSymbol clazz) { return other.isEnclosedBy(clazz); } |
|
473 |
public boolean isInheritedIn(Symbol clazz, Types types) { return other.isInheritedIn(clazz, types); } |
|
474 |
public Symbol asMemberOf(Type site, Types types) { return other.asMemberOf(site, types); } |
|
475 |
public void complete() throws CompletionFailure { other.complete(); } |
|
476 |
||
477 |
public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
|
478 |
return other.accept(v, p); |
|
479 |
} |
|
480 |
} |
|
481 |
||
482 |
/** A class for type symbols. Type variables are represented by instances |
|
483 |
* of this class, classes and packages by instances of subclasses. |
|
484 |
*/ |
|
485 |
public static class TypeSymbol |
|
486 |
extends Symbol implements TypeParameterElement { |
|
487 |
// Implements TypeParameterElement because type parameters don't |
|
488 |
// have their own TypeSymbol subclass. |
|
489 |
// TODO: type parameters should have their own TypeSymbol subclass |
|
490 |
||
491 |
public TypeSymbol(long flags, Name name, Type type, Symbol owner) { |
|
492 |
super(TYP, flags, name, type, owner); |
|
493 |
} |
|
494 |
||
495 |
/** form a fully qualified name from a name and an owner |
|
496 |
*/ |
|
497 |
static public Name formFullName(Name name, Symbol owner) { |
|
498 |
if (owner == null) return name; |
|
499 |
if (((owner.kind != ERR)) && |
|
500 |
((owner.kind & (VAR | MTH)) != 0 |
|
501 |
|| (owner.kind == TYP && owner.type.tag == TYPEVAR) |
|
502 |
)) return name; |
|
503 |
Name prefix = owner.getQualifiedName(); |
|
504 |
if (prefix == null || prefix == prefix.table.empty) |
|
505 |
return name; |
|
506 |
else return prefix.append('.', name); |
|
507 |
} |
|
508 |
||
509 |
/** form a fully qualified name from a name and an owner, after |
|
510 |
* converting to flat representation |
|
511 |
*/ |
|
512 |
static public Name formFlatName(Name name, Symbol owner) { |
|
513 |
if (owner == null || |
|
514 |
(owner.kind & (VAR | MTH)) != 0 |
|
515 |
|| (owner.kind == TYP && owner.type.tag == TYPEVAR) |
|
516 |
) return name; |
|
517 |
char sep = owner.kind == TYP ? '$' : '.'; |
|
518 |
Name prefix = owner.flatName(); |
|
519 |
if (prefix == null || prefix == prefix.table.empty) |
|
520 |
return name; |
|
521 |
else return prefix.append(sep, name); |
|
522 |
} |
|
523 |
||
524 |
/** |
|
525 |
* A total ordering between type symbols that refines the |
|
526 |
* class inheritance graph. |
|
527 |
* |
|
528 |
* Typevariables always precede other kinds of symbols. |
|
529 |
*/ |
|
530 |
public final boolean precedes(TypeSymbol that, Types types) { |
|
531 |
if (this == that) |
|
532 |
return false; |
|
533 |
if (this.type.tag == that.type.tag) { |
|
534 |
if (this.type.tag == CLASS) { |
|
535 |
return |
|
536 |
types.rank(that.type) < types.rank(this.type) || |
|
537 |
types.rank(that.type) == types.rank(this.type) && |
|
538 |
that.getQualifiedName().compareTo(this.getQualifiedName()) < 0; |
|
539 |
} else if (this.type.tag == TYPEVAR) { |
|
540 |
return types.isSubtype(this.type, that.type); |
|
541 |
} |
|
542 |
} |
|
543 |
return this.type.tag == TYPEVAR; |
|
544 |
} |
|
545 |
||
546 |
// For type params; overridden in subclasses. |
|
547 |
public ElementKind getKind() { |
|
548 |
return ElementKind.TYPE_PARAMETER; |
|
549 |
} |
|
550 |
||
551 |
public java.util.List<Symbol> getEnclosedElements() { |
|
552 |
List<Symbol> list = List.nil(); |
|
553 |
for (Scope.Entry e = members().elems; e != null; e = e.sibling) { |
|
554 |
if (e.sym != null && (e.sym.flags() & SYNTHETIC) == 0 && e.sym.owner == this) |
|
555 |
list = list.prepend(e.sym); |
|
556 |
} |
|
557 |
return list; |
|
558 |
} |
|
559 |
||
560 |
// For type params. |
|
561 |
// Perhaps not needed if getEnclosingElement can be spec'ed |
|
562 |
// to do the same thing. |
|
563 |
// TODO: getGenericElement() might not be needed |
|
564 |
public Symbol getGenericElement() { |
|
565 |
return owner; |
|
566 |
} |
|
567 |
||
568 |
public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
|
569 |
assert type.tag == TYPEVAR; // else override will be invoked |
|
570 |
return v.visitTypeParameter(this, p); |
|
571 |
} |
|
572 |
||
573 |
public List<Type> getBounds() { |
|
574 |
TypeVar t = (TypeVar)type; |
|
575 |
Type bound = t.getUpperBound(); |
|
576 |
if (!bound.isCompound()) |
|
577 |
return List.of(bound); |
|
578 |
ClassType ct = (ClassType)bound; |
|
579 |
if (!ct.tsym.erasure_field.isInterface()) { |
|
580 |
return ct.interfaces_field.prepend(ct.supertype_field); |
|
581 |
} else { |
|
582 |
// No superclass was given in bounds. |
|
583 |
// In this case, supertype is Object, erasure is first interface. |
|
584 |
return ct.interfaces_field; |
|
585 |
} |
|
586 |
} |
|
587 |
} |
|
588 |
||
589 |
/** A class for package symbols |
|
590 |
*/ |
|
591 |
public static class PackageSymbol extends TypeSymbol |
|
592 |
implements PackageElement { |
|
593 |
||
594 |
public Scope members_field; |
|
595 |
public Name fullname; |
|
596 |
public ClassSymbol package_info; // see bug 6443073 |
|
597 |
||
598 |
public PackageSymbol(Name name, Type type, Symbol owner) { |
|
599 |
super(0, name, type, owner); |
|
600 |
this.kind = PCK; |
|
601 |
this.members_field = null; |
|
602 |
this.fullname = formFullName(name, owner); |
|
603 |
} |
|
604 |
||
605 |
public PackageSymbol(Name name, Symbol owner) { |
|
606 |
this(name, null, owner); |
|
607 |
this.type = new PackageType(this); |
|
608 |
} |
|
609 |
||
610 |
public String toString() { |
|
611 |
return fullname.toString(); |
|
612 |
} |
|
613 |
||
614 |
public Name getQualifiedName() { |
|
615 |
return fullname; |
|
616 |
} |
|
617 |
||
618 |
public boolean isUnnamed() { |
|
619 |
return name.isEmpty() && owner != null; |
|
620 |
} |
|
621 |
||
622 |
public Scope members() { |
|
623 |
if (completer != null) complete(); |
|
624 |
return members_field; |
|
625 |
} |
|
626 |
||
627 |
public long flags() { |
|
628 |
if (completer != null) complete(); |
|
629 |
return flags_field; |
|
630 |
} |
|
631 |
||
632 |
public List<Attribute.Compound> getAnnotationMirrors() { |
|
633 |
if (completer != null) complete(); |
|
634 |
assert attributes_field != null; |
|
635 |
return attributes_field; |
|
636 |
} |
|
637 |
||
638 |
/** A package "exists" if a type or package that exists has |
|
639 |
* been seen within it. |
|
640 |
*/ |
|
641 |
public boolean exists() { |
|
642 |
return (flags_field & EXISTS) != 0; |
|
643 |
} |
|
644 |
||
645 |
public ElementKind getKind() { |
|
646 |
return ElementKind.PACKAGE; |
|
647 |
} |
|
648 |
||
649 |
public Symbol getEnclosingElement() { |
|
650 |
return null; |
|
651 |
} |
|
652 |
||
653 |
public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
|
654 |
return v.visitPackage(this, p); |
|
655 |
} |
|
656 |
} |
|
657 |
||
658 |
/** A class for class symbols |
|
659 |
*/ |
|
660 |
public static class ClassSymbol extends TypeSymbol implements TypeElement { |
|
661 |
||
662 |
/** a scope for all class members; variables, methods and inner classes |
|
663 |
* type parameters are not part of this scope |
|
664 |
*/ |
|
665 |
public Scope members_field; |
|
666 |
||
667 |
/** the fully qualified name of the class, i.e. pck.outer.inner. |
|
668 |
* null for anonymous classes |
|
669 |
*/ |
|
670 |
public Name fullname; |
|
671 |
||
672 |
/** the fully qualified name of the class after converting to flat |
|
673 |
* representation, i.e. pck.outer$inner, |
|
674 |
* set externally for local and anonymous classes |
|
675 |
*/ |
|
676 |
public Name flatname; |
|
677 |
||
678 |
/** the sourcefile where the class came from |
|
679 |
*/ |
|
680 |
public JavaFileObject sourcefile; |
|
681 |
||
682 |
/** the classfile from where to load this class |
|
683 |
* this will have extension .class or .java |
|
684 |
*/ |
|
685 |
public JavaFileObject classfile; |
|
686 |
||
687 |
/** the constant pool of the class |
|
688 |
*/ |
|
689 |
public Pool pool; |
|
690 |
||
691 |
public ClassSymbol(long flags, Name name, Type type, Symbol owner) { |
|
692 |
super(flags, name, type, owner); |
|
693 |
this.members_field = null; |
|
694 |
this.fullname = formFullName(name, owner); |
|
695 |
this.flatname = formFlatName(name, owner); |
|
696 |
this.sourcefile = null; |
|
697 |
this.classfile = null; |
|
698 |
this.pool = null; |
|
699 |
} |
|
700 |
||
701 |
public ClassSymbol(long flags, Name name, Symbol owner) { |
|
702 |
this( |
|
703 |
flags, |
|
704 |
name, |
|
705 |
new ClassType(Type.noType, null, null), |
|
706 |
owner); |
|
707 |
this.type.tsym = this; |
|
708 |
} |
|
709 |
||
710 |
/** The Java source which this symbol represents. |
|
711 |
*/ |
|
712 |
public String toString() { |
|
713 |
return className(); |
|
714 |
} |
|
715 |
||
716 |
public long flags() { |
|
717 |
if (completer != null) complete(); |
|
718 |
return flags_field; |
|
719 |
} |
|
720 |
||
721 |
public Scope members() { |
|
722 |
if (completer != null) complete(); |
|
723 |
return members_field; |
|
724 |
} |
|
725 |
||
726 |
public List<Attribute.Compound> getAnnotationMirrors() { |
|
727 |
if (completer != null) complete(); |
|
728 |
assert attributes_field != null; |
|
729 |
return attributes_field; |
|
730 |
} |
|
731 |
||
732 |
public Type erasure(Types types) { |
|
733 |
if (erasure_field == null) |
|
734 |
erasure_field = new ClassType(types.erasure(type.getEnclosingType()), |
|
735 |
List.<Type>nil(), this); |
|
736 |
return erasure_field; |
|
737 |
} |
|
738 |
||
739 |
public String className() { |
|
740 |
if (name.len == 0) |
|
741 |
return |
|
742 |
Log.getLocalizedString("anonymous.class", flatname); |
|
743 |
else |
|
744 |
return fullname.toString(); |
|
745 |
} |
|
746 |
||
747 |
public Name getQualifiedName() { |
|
748 |
return fullname; |
|
749 |
} |
|
750 |
||
751 |
public Name flatName() { |
|
752 |
return flatname; |
|
753 |
} |
|
754 |
||
755 |
public boolean isSubClass(Symbol base, Types types) { |
|
756 |
if (this == base) { |
|
757 |
return true; |
|
758 |
} else if ((base.flags() & INTERFACE) != 0) { |
|
759 |
for (Type t = type; t.tag == CLASS; t = types.supertype(t)) |
|
760 |
for (List<Type> is = types.interfaces(t); |
|
761 |
is.nonEmpty(); |
|
762 |
is = is.tail) |
|
763 |
if (is.head.tsym.isSubClass(base, types)) return true; |
|
764 |
} else { |
|
765 |
for (Type t = type; t.tag == CLASS; t = types.supertype(t)) |
|
766 |
if (t.tsym == base) return true; |
|
767 |
} |
|
768 |
return false; |
|
769 |
} |
|
770 |
||
771 |
/** Complete the elaboration of this symbol's definition. |
|
772 |
*/ |
|
773 |
public void complete() throws CompletionFailure { |
|
774 |
try { |
|
775 |
super.complete(); |
|
776 |
} catch (CompletionFailure ex) { |
|
777 |
// quiet error recovery |
|
778 |
flags_field |= (PUBLIC|STATIC); |
|
1257
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
parents:
1045
diff
changeset
|
779 |
this.type = new ErrorType(this, Type.noType); |
10 | 780 |
throw ex; |
781 |
} |
|
782 |
} |
|
783 |
||
784 |
public List<Type> getInterfaces() { |
|
785 |
complete(); |
|
786 |
if (type instanceof ClassType) { |
|
787 |
ClassType t = (ClassType)type; |
|
788 |
if (t.interfaces_field == null) // FIXME: shouldn't be null |
|
789 |
t.interfaces_field = List.nil(); |
|
790 |
return t.interfaces_field; |
|
791 |
} else { |
|
792 |
return List.nil(); |
|
793 |
} |
|
794 |
} |
|
795 |
||
796 |
public Type getSuperclass() { |
|
797 |
complete(); |
|
798 |
if (type instanceof ClassType) { |
|
799 |
ClassType t = (ClassType)type; |
|
800 |
if (t.supertype_field == null) // FIXME: shouldn't be null |
|
801 |
t.supertype_field = Type.noType; |
|
802 |
// An interface has no superclass; its supertype is Object. |
|
803 |
return t.isInterface() |
|
804 |
? Type.noType |
|
805 |
: t.supertype_field; |
|
806 |
} else { |
|
807 |
return Type.noType; |
|
808 |
} |
|
809 |
} |
|
810 |
||
811 |
public ElementKind getKind() { |
|
812 |
long flags = flags(); |
|
813 |
if ((flags & ANNOTATION) != 0) |
|
814 |
return ElementKind.ANNOTATION_TYPE; |
|
815 |
else if ((flags & INTERFACE) != 0) |
|
816 |
return ElementKind.INTERFACE; |
|
817 |
else if ((flags & ENUM) != 0) |
|
818 |
return ElementKind.ENUM; |
|
819 |
else |
|
820 |
return ElementKind.CLASS; |
|
821 |
} |
|
822 |
||
823 |
public NestingKind getNestingKind() { |
|
824 |
complete(); |
|
825 |
if (owner.kind == PCK) |
|
826 |
return NestingKind.TOP_LEVEL; |
|
827 |
else if (name.isEmpty()) |
|
828 |
return NestingKind.ANONYMOUS; |
|
829 |
else if (owner.kind == MTH) |
|
830 |
return NestingKind.LOCAL; |
|
831 |
else |
|
832 |
return NestingKind.MEMBER; |
|
833 |
} |
|
834 |
||
835 |
/** |
|
836 |
* @deprecated this method should never be used by javac internally. |
|
837 |
*/ |
|
838 |
@Override @Deprecated |
|
839 |
public <A extends java.lang.annotation.Annotation> A getAnnotation(Class<A> annoType) { |
|
840 |
return JavacElements.getAnnotation(this, annoType); |
|
841 |
} |
|
842 |
||
843 |
public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
|
844 |
return v.visitType(this, p); |
|
845 |
} |
|
846 |
} |
|
847 |
||
848 |
||
849 |
/** A class for variable symbols |
|
850 |
*/ |
|
851 |
public static class VarSymbol extends Symbol implements VariableElement { |
|
852 |
||
853 |
/** The variable's declaration position. |
|
854 |
*/ |
|
855 |
public int pos = Position.NOPOS; |
|
856 |
||
857 |
/** The variable's address. Used for different purposes during |
|
858 |
* flow analysis, translation and code generation. |
|
859 |
* Flow analysis: |
|
860 |
* If this is a blank final or local variable, its sequence number. |
|
861 |
* Translation: |
|
862 |
* If this is a private field, its access number. |
|
863 |
* Code generation: |
|
864 |
* If this is a local variable, its logical slot number. |
|
865 |
*/ |
|
866 |
public int adr = -1; |
|
867 |
||
868 |
/** Construct a variable symbol, given its flags, name, type and owner. |
|
869 |
*/ |
|
870 |
public VarSymbol(long flags, Name name, Type type, Symbol owner) { |
|
871 |
super(VAR, flags, name, type, owner); |
|
872 |
} |
|
873 |
||
874 |
/** Clone this symbol with new owner. |
|
875 |
*/ |
|
876 |
public VarSymbol clone(Symbol newOwner) { |
|
877 |
VarSymbol v = new VarSymbol(flags_field, name, type, newOwner); |
|
878 |
v.pos = pos; |
|
879 |
v.adr = adr; |
|
880 |
v.data = data; |
|
881 |
// System.out.println("clone " + v + " in " + newOwner);//DEBUG |
|
882 |
return v; |
|
883 |
} |
|
884 |
||
885 |
public String toString() { |
|
886 |
return name.toString(); |
|
887 |
} |
|
888 |
||
889 |
public Symbol asMemberOf(Type site, Types types) { |
|
890 |
return new VarSymbol(flags_field, name, types.memberType(site, this), owner); |
|
891 |
} |
|
892 |
||
893 |
public ElementKind getKind() { |
|
894 |
long flags = flags(); |
|
895 |
if ((flags & PARAMETER) != 0) { |
|
896 |
if (isExceptionParameter()) |
|
897 |
return ElementKind.EXCEPTION_PARAMETER; |
|
898 |
else |
|
899 |
return ElementKind.PARAMETER; |
|
900 |
} else if ((flags & ENUM) != 0) { |
|
901 |
return ElementKind.ENUM_CONSTANT; |
|
902 |
} else if (owner.kind == TYP || owner.kind == ERR) { |
|
903 |
return ElementKind.FIELD; |
|
904 |
} else { |
|
905 |
return ElementKind.LOCAL_VARIABLE; |
|
906 |
} |
|
907 |
} |
|
908 |
||
909 |
public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
|
910 |
return v.visitVariable(this, p); |
|
911 |
} |
|
912 |
||
913 |
public Object getConstantValue() { // Mirror API |
|
914 |
return Constants.decode(getConstValue(), type); |
|
915 |
} |
|
916 |
||
917 |
public void setLazyConstValue(final Env<AttrContext> env, |
|
918 |
final Log log, |
|
919 |
final Attr attr, |
|
920 |
final JCTree.JCExpression initializer) |
|
921 |
{ |
|
922 |
setData(new Callable<Object>() { |
|
923 |
public Object call() { |
|
924 |
JavaFileObject source = log.useSource(env.toplevel.sourcefile); |
|
925 |
try { |
|
926 |
Type itype = attr.attribExpr(initializer, env, type); |
|
927 |
if (itype.constValue() != null) |
|
928 |
return attr.coerce(itype, type).constValue(); |
|
929 |
else |
|
930 |
return null; |
|
931 |
} finally { |
|
932 |
log.useSource(source); |
|
933 |
} |
|
934 |
} |
|
935 |
}); |
|
936 |
} |
|
937 |
||
938 |
/** |
|
939 |
* The variable's constant value, if this is a constant. |
|
940 |
* Before the constant value is evaluated, it points to an |
|
941 |
* initalizer environment. If this is not a constant, it can |
|
942 |
* be used for other stuff. |
|
943 |
*/ |
|
944 |
private Object data; |
|
945 |
||
946 |
public boolean isExceptionParameter() { |
|
947 |
return data == ElementKind.EXCEPTION_PARAMETER; |
|
948 |
} |
|
949 |
||
950 |
public Object getConstValue() { |
|
951 |
// TODO: Consider if getConstValue and getConstantValue can be collapsed |
|
952 |
if (data == ElementKind.EXCEPTION_PARAMETER) { |
|
953 |
return null; |
|
954 |
} else if (data instanceof Callable<?>) { |
|
955 |
// In this case, this is final a variable, with an as |
|
956 |
// yet unevaluated initializer. |
|
957 |
Callable<?> eval = (Callable<?>)data; |
|
958 |
data = null; // to make sure we don't evaluate this twice. |
|
959 |
try { |
|
960 |
data = eval.call(); |
|
961 |
} catch (Exception ex) { |
|
962 |
throw new AssertionError(ex); |
|
963 |
} |
|
964 |
} |
|
965 |
return data; |
|
966 |
} |
|
967 |
||
968 |
public void setData(Object data) { |
|
969 |
assert !(data instanceof Env<?>) : this; |
|
970 |
this.data = data; |
|
971 |
} |
|
972 |
} |
|
973 |
||
974 |
/** A class for method symbols. |
|
975 |
*/ |
|
976 |
public static class MethodSymbol extends Symbol implements ExecutableElement { |
|
977 |
||
978 |
/** The code of the method. */ |
|
979 |
public Code code = null; |
|
980 |
||
981 |
/** The parameters of the method. */ |
|
982 |
public List<VarSymbol> params = null; |
|
983 |
||
984 |
/** The names of the parameters */ |
|
985 |
public List<Name> savedParameterNames; |
|
986 |
||
987 |
/** For an attribute field accessor, its default value if any. |
|
988 |
* The value is null if none appeared in the method |
|
989 |
* declaration. |
|
990 |
*/ |
|
991 |
public Attribute defaultValue = null; |
|
992 |
||
993 |
/** Construct a method symbol, given its flags, name, type and owner. |
|
994 |
*/ |
|
995 |
public MethodSymbol(long flags, Name name, Type type, Symbol owner) { |
|
996 |
super(MTH, flags, name, type, owner); |
|
997 |
assert owner.type.tag != TYPEVAR : owner + "." + name; |
|
998 |
} |
|
999 |
||
1000 |
/** Clone this symbol with new owner. |
|
1001 |
*/ |
|
1002 |
public MethodSymbol clone(Symbol newOwner) { |
|
1003 |
MethodSymbol m = new MethodSymbol(flags_field, name, type, newOwner); |
|
1004 |
m.code = code; |
|
1005 |
return m; |
|
1006 |
} |
|
1007 |
||
1008 |
/** The Java source which this symbol represents. |
|
1009 |
*/ |
|
1010 |
public String toString() { |
|
1011 |
if ((flags() & BLOCK) != 0) { |
|
1012 |
return owner.name.toString(); |
|
1013 |
} else { |
|
1014 |
String s = (name == name.table.init) |
|
1015 |
? owner.name.toString() |
|
1016 |
: name.toString(); |
|
1017 |
if (type != null) { |
|
1018 |
if (type.tag == FORALL) |
|
1019 |
s = "<" + ((ForAll)type).getTypeArguments() + ">" + s; |
|
1020 |
s += "(" + type.argtypes((flags() & VARARGS) != 0) + ")"; |
|
1021 |
} |
|
1022 |
return s; |
|
1023 |
} |
|
1024 |
} |
|
1025 |
||
1026 |
/** find a symbol that this (proxy method) symbol implements. |
|
1027 |
* @param c The class whose members are searched for |
|
1028 |
* implementations |
|
1029 |
*/ |
|
1030 |
public Symbol implemented(TypeSymbol c, Types types) { |
|
1031 |
Symbol impl = null; |
|
1032 |
for (List<Type> is = types.interfaces(c.type); |
|
1033 |
impl == null && is.nonEmpty(); |
|
1034 |
is = is.tail) { |
|
1035 |
TypeSymbol i = is.head.tsym; |
|
1036 |
for (Scope.Entry e = i.members().lookup(name); |
|
1037 |
impl == null && e.scope != null; |
|
1038 |
e = e.next()) { |
|
1039 |
if (this.overrides(e.sym, (TypeSymbol)owner, types, true) && |
|
1040 |
// FIXME: I suspect the following requires a |
|
1041 |
// subst() for a parametric return type. |
|
1042 |
types.isSameType(type.getReturnType(), |
|
1043 |
types.memberType(owner.type, e.sym).getReturnType())) { |
|
1044 |
impl = e.sym; |
|
1045 |
} |
|
1046 |
if (impl == null) |
|
1047 |
impl = implemented(i, types); |
|
1048 |
} |
|
1049 |
} |
|
1050 |
return impl; |
|
1051 |
} |
|
1052 |
||
1053 |
/** Will the erasure of this method be considered by the VM to |
|
1054 |
* override the erasure of the other when seen from class `origin'? |
|
1055 |
*/ |
|
1056 |
public boolean binaryOverrides(Symbol _other, TypeSymbol origin, Types types) { |
|
1057 |
if (isConstructor() || _other.kind != MTH) return false; |
|
1058 |
||
1059 |
if (this == _other) return true; |
|
1060 |
MethodSymbol other = (MethodSymbol)_other; |
|
1061 |
||
1062 |
// check for a direct implementation |
|
1063 |
if (other.isOverridableIn((TypeSymbol)owner) && |
|
1064 |
types.asSuper(owner.type, other.owner) != null && |
|
1065 |
types.isSameType(erasure(types), other.erasure(types))) |
|
1066 |
return true; |
|
1067 |
||
1068 |
// check for an inherited implementation |
|
1069 |
return |
|
1070 |
(flags() & ABSTRACT) == 0 && |
|
1071 |
other.isOverridableIn(origin) && |
|
1072 |
this.isMemberOf(origin, types) && |
|
1073 |
types.isSameType(erasure(types), other.erasure(types)); |
|
1074 |
} |
|
1075 |
||
1076 |
/** The implementation of this (abstract) symbol in class origin, |
|
1077 |
* from the VM's point of view, null if method does not have an |
|
1078 |
* implementation in class. |
|
1079 |
* @param origin The class of which the implementation is a member. |
|
1080 |
*/ |
|
1081 |
public MethodSymbol binaryImplementation(ClassSymbol origin, Types types) { |
|
1082 |
for (TypeSymbol c = origin; c != null; c = types.supertype(c.type).tsym) { |
|
1083 |
for (Scope.Entry e = c.members().lookup(name); |
|
1084 |
e.scope != null; |
|
1085 |
e = e.next()) { |
|
1086 |
if (e.sym.kind == MTH && |
|
1087 |
((MethodSymbol)e.sym).binaryOverrides(this, origin, types)) |
|
1088 |
return (MethodSymbol)e.sym; |
|
1089 |
} |
|
1090 |
} |
|
1091 |
return null; |
|
1092 |
} |
|
1093 |
||
1094 |
/** Does this symbol override `other' symbol, when both are seen as |
|
1095 |
* members of class `origin'? It is assumed that _other is a member |
|
1096 |
* of origin. |
|
1097 |
* |
|
1098 |
* It is assumed that both symbols have the same name. The static |
|
1099 |
* modifier is ignored for this test. |
|
1100 |
* |
|
1101 |
* See JLS 8.4.6.1 (without transitivity) and 8.4.6.4 |
|
1102 |
*/ |
|
1103 |
public boolean overrides(Symbol _other, TypeSymbol origin, Types types, boolean checkResult) { |
|
1104 |
if (isConstructor() || _other.kind != MTH) return false; |
|
1105 |
||
1106 |
if (this == _other) return true; |
|
1107 |
MethodSymbol other = (MethodSymbol)_other; |
|
1108 |
||
1109 |
// check for a direct implementation |
|
1110 |
if (other.isOverridableIn((TypeSymbol)owner) && |
|
1111 |
types.asSuper(owner.type, other.owner) != null) { |
|
1112 |
Type mt = types.memberType(owner.type, this); |
|
1113 |
Type ot = types.memberType(owner.type, other); |
|
1114 |
if (types.isSubSignature(mt, ot)) { |
|
1115 |
if (!checkResult) |
|
1116 |
return true; |
|
1117 |
if (types.returnTypeSubstitutable(mt, ot)) |
|
1118 |
return true; |
|
1119 |
} |
|
1120 |
} |
|
1121 |
||
1122 |
// check for an inherited implementation |
|
1123 |
if ((flags() & ABSTRACT) != 0 || |
|
1124 |
(other.flags() & ABSTRACT) == 0 || |
|
1125 |
!other.isOverridableIn(origin) || |
|
1126 |
!this.isMemberOf(origin, types)) |
|
1127 |
return false; |
|
1128 |
||
1129 |
// assert types.asSuper(origin.type, other.owner) != null; |
|
1130 |
Type mt = types.memberType(origin.type, this); |
|
1131 |
Type ot = types.memberType(origin.type, other); |
|
1132 |
return |
|
1133 |
types.isSubSignature(mt, ot) && |
|
1134 |
(!checkResult || types.resultSubtype(mt, ot, Warner.noWarnings)); |
|
1135 |
} |
|
1136 |
||
1137 |
private boolean isOverridableIn(TypeSymbol origin) { |
|
1138 |
// JLS3 8.4.6.1 |
|
1139 |
switch ((int)(flags_field & Flags.AccessFlags)) { |
|
1140 |
case Flags.PRIVATE: |
|
1141 |
return false; |
|
1142 |
case Flags.PUBLIC: |
|
1143 |
return true; |
|
1144 |
case Flags.PROTECTED: |
|
1145 |
return (origin.flags() & INTERFACE) == 0; |
|
1146 |
case 0: |
|
1147 |
// for package private: can only override in the same |
|
1148 |
// package |
|
1149 |
return |
|
1150 |
this.packge() == origin.packge() && |
|
1151 |
(origin.flags() & INTERFACE) == 0; |
|
1152 |
default: |
|
1153 |
return false; |
|
1154 |
} |
|
1155 |
} |
|
1156 |
||
1157 |
/** The implementation of this (abstract) symbol in class origin; |
|
1158 |
* null if none exists. Synthetic methods are not considered |
|
1159 |
* as possible implementations. |
|
1160 |
*/ |
|
1161 |
public MethodSymbol implementation(TypeSymbol origin, Types types, boolean checkResult) { |
|
1162 |
for (Type t = origin.type; t.tag == CLASS; t = types.supertype(t)) { |
|
1163 |
TypeSymbol c = t.tsym; |
|
1164 |
for (Scope.Entry e = c.members().lookup(name); |
|
1165 |
e.scope != null; |
|
1166 |
e = e.next()) { |
|
1167 |
if (e.sym.kind == MTH) { |
|
1168 |
MethodSymbol m = (MethodSymbol) e.sym; |
|
1169 |
if (m.overrides(this, origin, types, checkResult) && |
|
1170 |
(m.flags() & SYNTHETIC) == 0) |
|
1171 |
return m; |
|
1172 |
} |
|
1173 |
} |
|
1174 |
} |
|
1175 |
// if origin is derived from a raw type, we might have missed |
|
1176 |
// an implementation because we do not know enough about instantiations. |
|
1177 |
// in this case continue with the supertype as origin. |
|
1178 |
if (types.isDerivedRaw(origin.type)) |
|
1179 |
return implementation(types.supertype(origin.type).tsym, types, checkResult); |
|
1180 |
else |
|
1181 |
return null; |
|
1182 |
} |
|
1183 |
||
1184 |
public List<VarSymbol> params() { |
|
1185 |
owner.complete(); |
|
1186 |
if (params == null) { |
|
1187 |
List<Name> names = savedParameterNames; |
|
1188 |
savedParameterNames = null; |
|
1189 |
if (names == null) { |
|
1190 |
names = List.nil(); |
|
1191 |
int i = 0; |
|
1192 |
for (Type t : type.getParameterTypes()) |
|
1193 |
names = names.prepend(name.table.fromString("arg" + i++)); |
|
1194 |
names = names.reverse(); |
|
1195 |
} |
|
1196 |
ListBuffer<VarSymbol> buf = new ListBuffer<VarSymbol>(); |
|
1197 |
for (Type t : type.getParameterTypes()) { |
|
1198 |
buf.append(new VarSymbol(PARAMETER, names.head, t, this)); |
|
1199 |
names = names.tail; |
|
1200 |
} |
|
1201 |
params = buf.toList(); |
|
1202 |
} |
|
1203 |
return params; |
|
1204 |
} |
|
1205 |
||
1206 |
public Symbol asMemberOf(Type site, Types types) { |
|
1207 |
return new MethodSymbol(flags_field, name, types.memberType(site, this), owner); |
|
1208 |
} |
|
1209 |
||
1210 |
public ElementKind getKind() { |
|
1211 |
if (name == name.table.init) |
|
1212 |
return ElementKind.CONSTRUCTOR; |
|
1213 |
else if (name == name.table.clinit) |
|
1214 |
return ElementKind.STATIC_INIT; |
|
1215 |
else |
|
1216 |
return ElementKind.METHOD; |
|
1217 |
} |
|
1218 |
||
1219 |
public Attribute getDefaultValue() { |
|
1220 |
return defaultValue; |
|
1221 |
} |
|
1222 |
||
1223 |
public List<VarSymbol> getParameters() { |
|
1224 |
return params(); |
|
1225 |
} |
|
1226 |
||
1227 |
public boolean isVarArgs() { |
|
1228 |
return (flags() & VARARGS) != 0; |
|
1229 |
} |
|
1230 |
||
1231 |
public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
|
1232 |
return v.visitExecutable(this, p); |
|
1233 |
} |
|
1234 |
||
1235 |
public Type getReturnType() { |
|
1236 |
return asType().getReturnType(); |
|
1237 |
} |
|
1238 |
||
1239 |
public List<Type> getThrownTypes() { |
|
1240 |
return asType().getThrownTypes(); |
|
1241 |
} |
|
1242 |
} |
|
1243 |
||
1244 |
/** A class for predefined operators. |
|
1245 |
*/ |
|
1246 |
public static class OperatorSymbol extends MethodSymbol { |
|
1247 |
||
1248 |
public int opcode; |
|
1249 |
||
1250 |
public OperatorSymbol(Name name, Type type, int opcode, Symbol owner) { |
|
1251 |
super(PUBLIC | STATIC, name, type, owner); |
|
1252 |
this.opcode = opcode; |
|
1253 |
} |
|
1254 |
} |
|
1255 |
||
1256 |
/** Symbol completer interface. |
|
1257 |
*/ |
|
1258 |
public static interface Completer { |
|
1259 |
void complete(Symbol sym) throws CompletionFailure; |
|
1260 |
} |
|
1261 |
||
1262 |
public static class CompletionFailure extends RuntimeException { |
|
1263 |
private static final long serialVersionUID = 0; |
|
1264 |
public Symbol sym; |
|
1265 |
||
169 | 1266 |
/** A diagnostic object describing the failure |
1267 |
*/ |
|
1268 |
public JCDiagnostic diag; |
|
1269 |
||
10 | 1270 |
/** A localized string describing the failure. |
169 | 1271 |
* @deprecated Use {@code getDetail()} or {@code getMessage()} |
10 | 1272 |
*/ |
169 | 1273 |
@Deprecated |
10 | 1274 |
public String errmsg; |
1275 |
||
1276 |
public CompletionFailure(Symbol sym, String errmsg) { |
|
1277 |
this.sym = sym; |
|
1278 |
this.errmsg = errmsg; |
|
1279 |
// this.printStackTrace();//DEBUG |
|
1280 |
} |
|
1281 |
||
169 | 1282 |
public CompletionFailure(Symbol sym, JCDiagnostic diag) { |
1283 |
this.sym = sym; |
|
1284 |
this.diag = diag; |
|
1285 |
// this.printStackTrace();//DEBUG |
|
1286 |
} |
|
1287 |
||
1288 |
public JCDiagnostic getDiagnostic() { |
|
1289 |
return diag; |
|
1290 |
} |
|
1291 |
||
1292 |
@Override |
|
10 | 1293 |
public String getMessage() { |
169 | 1294 |
if (diag != null) |
1295 |
return diag.getMessage(null); |
|
1296 |
else |
|
1297 |
return errmsg; |
|
1298 |
} |
|
1299 |
||
1300 |
public Object getDetailValue() { |
|
1301 |
return (diag != null ? diag : errmsg); |
|
10 | 1302 |
} |
1303 |
||
1304 |
@Override |
|
1305 |
public CompletionFailure initCause(Throwable cause) { |
|
1306 |
super.initCause(cause); |
|
1307 |
return this; |
|
1308 |
} |
|
1309 |
||
1310 |
} |
|
1311 |
} |