author | mcimadamore |
Mon, 08 Apr 2013 15:51:41 +0100 | |
changeset 16805 | b419336382fd |
parent 16566 | 604ce45d5f23 |
child 16975 | 124c8436d59c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. 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. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.tools.javac.comp; |
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|
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import com.sun.tools.javac.code.*; |
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import com.sun.tools.javac.tree.*; |
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import com.sun.tools.javac.util.*; |
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import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; |
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import com.sun.tools.javac.code.Symbol.*; |
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import com.sun.tools.javac.code.Type.*; |
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import com.sun.tools.javac.comp.Attr.ResultInfo; |
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import com.sun.tools.javac.comp.Infer.InferenceContext; |
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import com.sun.tools.javac.comp.Resolve.MethodResolutionPhase; |
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import com.sun.tools.javac.tree.JCTree.*; |
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|
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import javax.tools.JavaFileObject; |
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import java.util.ArrayList; |
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import java.util.EnumSet; |
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import java.util.LinkedHashSet; |
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import java.util.Map; |
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import java.util.Queue; |
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import java.util.Set; |
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import java.util.WeakHashMap; |
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import static com.sun.tools.javac.code.TypeTag.*; |
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import static com.sun.tools.javac.tree.JCTree.Tag.*; |
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/** |
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* This is an helper class that is used to perform deferred type-analysis. |
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* Each time a poly expression occurs in argument position, javac attributes it |
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* with a temporary 'deferred type' that is checked (possibly multiple times) |
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* against an expected formal type. |
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* |
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* <p><b>This is NOT part of any supported API. |
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* If 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 class DeferredAttr extends JCTree.Visitor { |
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protected static final Context.Key<DeferredAttr> deferredAttrKey = |
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new Context.Key<DeferredAttr>(); |
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final Attr attr; |
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final Check chk; |
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final JCDiagnostic.Factory diags; |
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final Enter enter; |
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final Infer infer; |
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final Resolve rs; |
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final Log log; |
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final Symtab syms; |
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final TreeMaker make; |
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final Types types; |
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public static DeferredAttr instance(Context context) { |
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DeferredAttr instance = context.get(deferredAttrKey); |
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if (instance == null) |
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instance = new DeferredAttr(context); |
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return instance; |
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} |
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protected DeferredAttr(Context context) { |
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context.put(deferredAttrKey, this); |
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attr = Attr.instance(context); |
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chk = Check.instance(context); |
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diags = JCDiagnostic.Factory.instance(context); |
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enter = Enter.instance(context); |
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infer = Infer.instance(context); |
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rs = Resolve.instance(context); |
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log = Log.instance(context); |
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syms = Symtab.instance(context); |
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make = TreeMaker.instance(context); |
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types = Types.instance(context); |
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Names names = Names.instance(context); |
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stuckTree = make.Ident(names.empty).setType(Type.noType); |
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} |
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/** shared tree for stuck expressions */ |
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final JCTree stuckTree; |
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/** |
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* This type represents a deferred type. A deferred type starts off with |
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* no information on the underlying expression type. Such info needs to be |
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* discovered through type-checking the deferred type against a target-type. |
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* Every deferred type keeps a pointer to the AST node from which it originated. |
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*/ |
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public class DeferredType extends Type { |
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public JCExpression tree; |
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Env<AttrContext> env; |
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AttrMode mode; |
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SpeculativeCache speculativeCache; |
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DeferredType(JCExpression tree, Env<AttrContext> env) { |
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super(DEFERRED, null); |
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this.tree = tree; |
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this.env = env.dup(tree, env.info.dup()); |
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this.speculativeCache = new SpeculativeCache(); |
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} |
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/** |
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* A speculative cache is used to keep track of all overload resolution rounds |
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* that triggered speculative attribution on a given deferred type. Each entry |
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* stores a pointer to the speculative tree and the resolution phase in which the entry |
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* has been added. |
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*/ |
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class SpeculativeCache { |
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private Map<Symbol, List<Entry>> cache = |
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new WeakHashMap<Symbol, List<Entry>>(); |
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|
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class Entry { |
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JCTree speculativeTree; |
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Resolve.MethodResolutionPhase phase; |
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|
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public Entry(JCTree speculativeTree, MethodResolutionPhase phase) { |
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this.speculativeTree = speculativeTree; |
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this.phase = phase; |
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} |
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boolean matches(Resolve.MethodResolutionPhase phase) { |
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return this.phase == phase; |
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} |
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} |
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|
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/** |
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* Retrieve a speculative cache entry corresponding to given symbol |
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* and resolution phase |
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*/ |
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Entry get(Symbol msym, MethodResolutionPhase phase) { |
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List<Entry> entries = cache.get(msym); |
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if (entries == null) return null; |
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for (Entry e : entries) { |
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if (e.matches(phase)) return e; |
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} |
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return null; |
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} |
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|
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/** |
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* Stores a speculative cache entry corresponding to given symbol |
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* and resolution phase |
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*/ |
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void put(Symbol msym, JCTree speculativeTree, MethodResolutionPhase phase) { |
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List<Entry> entries = cache.get(msym); |
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if (entries == null) { |
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entries = List.nil(); |
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} |
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cache.put(msym, entries.prepend(new Entry(speculativeTree, phase))); |
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} |
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} |
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|
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/** |
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* Get the type that has been computed during a speculative attribution round |
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*/ |
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Type speculativeType(Symbol msym, MethodResolutionPhase phase) { |
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SpeculativeCache.Entry e = speculativeCache.get(msym, phase); |
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return e != null ? e.speculativeTree.type : Type.noType; |
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} |
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|
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/** |
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* Check a deferred type against a potential target-type. Depending on |
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* the current attribution mode, a normal vs. speculative attribution |
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* round is performed on the underlying AST node. There can be only one |
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* speculative round for a given target method symbol; moreover, a normal |
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* attribution round must follow one or more speculative rounds. |
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*/ |
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Type check(ResultInfo resultInfo) { |
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return check(resultInfo, stuckVars(tree, env, resultInfo), basicCompleter); |
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} |
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|
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Type check(ResultInfo resultInfo, List<Type> stuckVars, DeferredTypeCompleter deferredTypeCompleter) { |
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DeferredAttrContext deferredAttrContext = |
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resultInfo.checkContext.deferredAttrContext(); |
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Assert.check(deferredAttrContext != emptyDeferredAttrContext); |
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if (stuckVars.nonEmpty()) { |
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deferredAttrContext.addDeferredAttrNode(this, resultInfo, stuckVars); |
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return Type.noType; |
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} else { |
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try { |
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return deferredTypeCompleter.complete(this, resultInfo, deferredAttrContext); |
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} finally { |
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mode = deferredAttrContext.mode; |
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} |
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} |
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} |
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} |
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|
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/** |
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* A completer for deferred types. Defines an entry point for type-checking |
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* a deferred type. |
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*/ |
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interface DeferredTypeCompleter { |
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/** |
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* Entry point for type-checking a deferred type. Depending on the |
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* circumstances, type-checking could amount to full attribution |
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* or partial structural check (aka potential applicability). |
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*/ |
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Type complete(DeferredType dt, ResultInfo resultInfo, DeferredAttrContext deferredAttrContext); |
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} |
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|
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/** |
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* A basic completer for deferred types. This completer type-checks a deferred type |
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* using attribution; depending on the attribution mode, this could be either standard |
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* or speculative attribution. |
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*/ |
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DeferredTypeCompleter basicCompleter = new DeferredTypeCompleter() { |
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public Type complete(DeferredType dt, ResultInfo resultInfo, DeferredAttrContext deferredAttrContext) { |
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switch (deferredAttrContext.mode) { |
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case SPECULATIVE: |
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//Note: if a symbol is imported twice we might do two identical |
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//speculative rounds... |
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Assert.check(dt.mode == null || dt.mode == AttrMode.SPECULATIVE); |
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JCTree speculativeTree = attribSpeculative(dt.tree, dt.env, resultInfo); |
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dt.speculativeCache.put(deferredAttrContext.msym, speculativeTree, deferredAttrContext.phase); |
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return speculativeTree.type; |
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case CHECK: |
15717 | 240 |
Assert.check(dt.mode != null); |
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return attr.attribTree(dt.tree, dt.env, resultInfo); |
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} |
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243 |
Assert.error(); |
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244 |
return null; |
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245 |
} |
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246 |
}; |
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247 |
|
15717 | 248 |
DeferredTypeCompleter dummyCompleter = new DeferredTypeCompleter() { |
249 |
public Type complete(DeferredType dt, ResultInfo resultInfo, DeferredAttrContext deferredAttrContext) { |
|
250 |
Assert.check(deferredAttrContext.mode == AttrMode.CHECK); |
|
251 |
return dt.tree.type = Type.noType; |
|
252 |
} |
|
253 |
}; |
|
254 |
||
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/** |
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* The 'mode' in which the deferred type is to be type-checked |
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*/ |
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258 |
public enum AttrMode { |
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259 |
/** |
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* A speculative type-checking round is used during overload resolution |
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* mainly to generate constraints on inference variables. Side-effects |
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* arising from type-checking the expression associated with the deferred |
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* type are reversed after the speculative round finishes. This means the |
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* expression tree will be left in a blank state. |
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*/ |
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SPECULATIVE, |
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/** |
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* This is the plain type-checking mode. Produces side-effects on the underlying AST node |
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*/ |
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CHECK; |
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} |
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|
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/** |
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* Routine that performs speculative type-checking; the input AST node is |
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* cloned (to avoid side-effects cause by Attr) and compiler state is |
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* restored after type-checking. All diagnostics (but critical ones) are |
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* disabled during speculative type-checking. |
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*/ |
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JCTree attribSpeculative(JCTree tree, Env<AttrContext> env, ResultInfo resultInfo) { |
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final JCTree newTree = new TreeCopier<Object>(make).copy(tree); |
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Env<AttrContext> speculativeEnv = env.dup(newTree, env.info.dup(env.info.scope.dupUnshared())); |
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speculativeEnv.info.scope.owner = env.info.scope.owner; |
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Log.DeferredDiagnosticHandler deferredDiagnosticHandler = |
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new Log.DeferredDiagnosticHandler(log, new Filter<JCDiagnostic>() { |
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public boolean accepts(final JCDiagnostic d) { |
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class PosScanner extends TreeScanner { |
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boolean found = false; |
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288 |
|
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@Override |
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public void scan(JCTree tree) { |
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if (tree != null && |
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tree.pos() == d.getDiagnosticPosition()) { |
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found = true; |
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294 |
} |
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super.scan(tree); |
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} |
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}; |
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PosScanner posScanner = new PosScanner(); |
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posScanner.scan(newTree); |
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return posScanner.found; |
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} |
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}); |
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try { |
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attr.attribTree(newTree, speculativeEnv, resultInfo); |
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305 |
unenterScanner.scan(newTree); |
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306 |
return newTree; |
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307 |
} finally { |
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unenterScanner.scan(newTree); |
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log.popDiagnosticHandler(deferredDiagnosticHandler); |
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} |
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} |
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//where |
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protected TreeScanner unenterScanner = new TreeScanner() { |
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@Override |
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315 |
public void visitClassDef(JCClassDecl tree) { |
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ClassSymbol csym = tree.sym; |
14547 | 317 |
//if something went wrong during method applicability check |
318 |
//it is possible that nested expressions inside argument expression |
|
319 |
//are left unchecked - in such cases there's nothing to clean up. |
|
320 |
if (csym == null) return; |
|
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321 |
enter.typeEnvs.remove(csym); |
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322 |
chk.compiled.remove(csym.flatname); |
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323 |
syms.classes.remove(csym.flatname); |
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super.visitClassDef(tree); |
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} |
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}; |
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327 |
|
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/** |
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* A deferred context is created on each method check. A deferred context is |
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|
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* used to keep track of information associated with the method check, such as |
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* the symbol of the method being checked, the overload resolution phase, |
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* the kind of attribution mode to be applied to deferred types and so forth. |
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333 |
* As deferred types are processed (by the method check routine) stuck AST nodes |
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* are added (as new deferred attribution nodes) to this context. The complete() |
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|
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* routine makes sure that all pending nodes are properly processed, by |
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|
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* progressively instantiating all inference variables on which one or more |
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|
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* deferred attribution node is stuck. |
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|
338 |
*/ |
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|
339 |
class DeferredAttrContext { |
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|
340 |
|
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341 |
/** attribution mode */ |
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342 |
final AttrMode mode; |
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|
343 |
|
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/** symbol of the method being checked */ |
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345 |
final Symbol msym; |
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|
346 |
|
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347 |
/** method resolution step */ |
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|
348 |
final Resolve.MethodResolutionPhase phase; |
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|
349 |
|
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350 |
/** inference context */ |
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351 |
final InferenceContext inferenceContext; |
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352 |
|
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353 |
/** parent deferred context */ |
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|
354 |
final DeferredAttrContext parent; |
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|
355 |
|
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|
356 |
/** Warner object to report warnings */ |
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|
357 |
final Warner warn; |
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|
358 |
|
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359 |
/** list of deferred attribution nodes to be processed */ |
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|
360 |
ArrayList<DeferredAttrNode> deferredAttrNodes = new ArrayList<DeferredAttrNode>(); |
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|
361 |
|
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362 |
DeferredAttrContext(AttrMode mode, Symbol msym, MethodResolutionPhase phase, |
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363 |
InferenceContext inferenceContext, DeferredAttrContext parent, Warner warn) { |
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|
364 |
this.mode = mode; |
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|
365 |
this.msym = msym; |
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|
366 |
this.phase = phase; |
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|
367 |
this.parent = parent; |
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|
368 |
this.warn = warn; |
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|
369 |
this.inferenceContext = inferenceContext; |
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|
370 |
} |
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|
371 |
|
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|
372 |
/** |
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|
373 |
* Adds a node to the list of deferred attribution nodes - used by Resolve.rawCheckArgumentsApplicable |
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|
374 |
* Nodes added this way act as 'roots' for the out-of-order method checking process. |
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|
375 |
*/ |
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|
376 |
void addDeferredAttrNode(final DeferredType dt, ResultInfo resultInfo, List<Type> stuckVars) { |
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|
377 |
deferredAttrNodes.add(new DeferredAttrNode(dt, resultInfo, stuckVars)); |
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|
378 |
} |
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|
379 |
|
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|
380 |
/** |
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|
381 |
* Incrementally process all nodes, by skipping 'stuck' nodes and attributing |
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|
382 |
* 'unstuck' ones. If at any point no progress can be made (no 'unstuck' nodes) |
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|
383 |
* some inference variable might get eagerly instantiated so that all nodes |
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|
384 |
* can be type-checked. |
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|
385 |
*/ |
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|
386 |
void complete() { |
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|
387 |
while (!deferredAttrNodes.isEmpty()) { |
14547 | 388 |
Set<Type> stuckVars = new LinkedHashSet<Type>(); |
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|
389 |
boolean progress = false; |
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|
390 |
//scan a defensive copy of the node list - this is because a deferred |
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|
391 |
//attribution round can add new nodes to the list |
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|
392 |
for (DeferredAttrNode deferredAttrNode : List.from(deferredAttrNodes)) { |
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|
393 |
if (!deferredAttrNode.process(this)) { |
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|
394 |
stuckVars.addAll(deferredAttrNode.stuckVars); |
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|
395 |
} else { |
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|
396 |
deferredAttrNodes.remove(deferredAttrNode); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
397 |
progress = true; |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
398 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
399 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
400 |
if (!progress) { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
401 |
//remove all variables that have already been instantiated |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
402 |
//from the list of stuck variables |
15717 | 403 |
inferenceContext.solveAny(List.from(stuckVars), warn); |
15705 | 404 |
inferenceContext.notifyChange(); |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
405 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
406 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
407 |
} |
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
408 |
} |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
409 |
|
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
410 |
/** |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
411 |
* Class representing a deferred attribution node. It keeps track of |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
412 |
* a deferred type, along with the expected target type information. |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
413 |
*/ |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
414 |
class DeferredAttrNode implements Infer.FreeTypeListener { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
415 |
|
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
416 |
/** underlying deferred type */ |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
417 |
DeferredType dt; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
418 |
|
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
419 |
/** underlying target type information */ |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
420 |
ResultInfo resultInfo; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
421 |
|
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
422 |
/** list of uninferred inference variables causing this node to be stuck */ |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
423 |
List<Type> stuckVars; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
424 |
|
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
425 |
DeferredAttrNode(DeferredType dt, ResultInfo resultInfo, List<Type> stuckVars) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
426 |
this.dt = dt; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
427 |
this.resultInfo = resultInfo; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
428 |
this.stuckVars = stuckVars; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
429 |
if (!stuckVars.isEmpty()) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
430 |
resultInfo.checkContext.inferenceContext().addFreeTypeListener(stuckVars, this); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
431 |
} |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
432 |
} |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
433 |
|
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
434 |
@Override |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
435 |
public void typesInferred(InferenceContext inferenceContext) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
436 |
stuckVars = List.nil(); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
437 |
resultInfo = resultInfo.dup(inferenceContext.asInstType(resultInfo.pt)); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
438 |
} |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
439 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
440 |
/** |
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
441 |
* Process a deferred attribution node. |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
442 |
* Invariant: a stuck node cannot be processed. |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
443 |
*/ |
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
444 |
@SuppressWarnings("fallthrough") |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
445 |
boolean process(DeferredAttrContext deferredAttrContext) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
446 |
switch (deferredAttrContext.mode) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
447 |
case SPECULATIVE: |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
448 |
dt.check(resultInfo, List.<Type>nil(), new StructuralStuckChecker()); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
449 |
return true; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
450 |
case CHECK: |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
451 |
if (stuckVars.nonEmpty()) { |
15717 | 452 |
//stuck expression - see if we can propagate |
453 |
if (deferredAttrContext.parent != emptyDeferredAttrContext && |
|
454 |
Type.containsAny(deferredAttrContext.parent.inferenceContext.inferencevars, List.from(stuckVars))) { |
|
455 |
deferredAttrContext.parent.deferredAttrNodes.add(this); |
|
456 |
dt.check(resultInfo, List.<Type>nil(), dummyCompleter); |
|
457 |
return true; |
|
458 |
} else { |
|
459 |
return false; |
|
460 |
} |
|
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
461 |
} else { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
462 |
dt.check(resultInfo, stuckVars, basicCompleter); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
463 |
return true; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
464 |
} |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
465 |
default: |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
466 |
throw new AssertionError("Bad mode"); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
467 |
} |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
468 |
} |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
469 |
|
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
470 |
/** |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
471 |
* Structural checker for stuck expressions |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
472 |
*/ |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
473 |
class StructuralStuckChecker extends TreeScanner implements DeferredTypeCompleter { |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
474 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
475 |
ResultInfo resultInfo; |
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
476 |
InferenceContext inferenceContext; |
16294
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
477 |
Env<AttrContext> env; |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
478 |
|
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
479 |
public Type complete(DeferredType dt, ResultInfo resultInfo, DeferredAttrContext deferredAttrContext) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
480 |
this.resultInfo = resultInfo; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
481 |
this.inferenceContext = deferredAttrContext.inferenceContext; |
16294
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
482 |
this.env = dt.env.dup(dt.tree, dt.env.info.dup()); |
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
483 |
dt.tree.accept(this); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
484 |
dt.speculativeCache.put(deferredAttrContext.msym, stuckTree, deferredAttrContext.phase); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
485 |
return Type.noType; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
486 |
} |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
487 |
|
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
488 |
@Override |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
489 |
public void visitLambda(JCLambda tree) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
490 |
Check.CheckContext checkContext = resultInfo.checkContext; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
491 |
Type pt = resultInfo.pt; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
492 |
if (inferenceContext.inferencevars.contains(pt)) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
493 |
//ok |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
494 |
return; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
495 |
} else { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
496 |
//must be a functional descriptor |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
497 |
try { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
498 |
Type desc = types.findDescriptorType(pt); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
499 |
if (desc.getParameterTypes().length() != tree.params.length()) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
500 |
checkContext.report(tree, diags.fragment("incompatible.arg.types.in.lambda")); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
501 |
} |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
502 |
} catch (Types.FunctionDescriptorLookupError ex) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
503 |
checkContext.report(null, ex.getDiagnostic()); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
504 |
} |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
505 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
506 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
507 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
508 |
@Override |
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
509 |
public void visitNewClass(JCNewClass tree) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
510 |
//do nothing |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
511 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
512 |
|
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
513 |
@Override |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
514 |
public void visitApply(JCMethodInvocation tree) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
515 |
//do nothing |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
516 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
517 |
|
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
518 |
@Override |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
519 |
public void visitReference(JCMemberReference tree) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
520 |
Check.CheckContext checkContext = resultInfo.checkContext; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
521 |
Type pt = resultInfo.pt; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
522 |
if (inferenceContext.inferencevars.contains(pt)) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
523 |
//ok |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
524 |
return; |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
525 |
} else { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
526 |
try { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
527 |
types.findDescriptorType(pt); |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
528 |
} catch (Types.FunctionDescriptorLookupError ex) { |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
529 |
checkContext.report(null, ex.getDiagnostic()); |
15374
fb8f6acf09cc
8005244: Implement overload resolution as per latest spec EDR
mcimadamore
parents:
15039
diff
changeset
|
530 |
} |
16294
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
531 |
JCExpression exprTree = (JCExpression)attribSpeculative(tree.getQualifierExpression(), env, |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
532 |
attr.memberReferenceQualifierResult(tree)); |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
533 |
ListBuffer<Type> argtypes = ListBuffer.lb(); |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
534 |
for (Type t : types.findDescriptorType(pt).getParameterTypes()) { |
16805
b419336382fd
8010922: Cleanup: add support for ad-hoc method check logic
mcimadamore
parents:
16566
diff
changeset
|
535 |
argtypes.append(Type.noType); |
16294
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
536 |
} |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
537 |
JCMemberReference mref2 = new TreeCopier<Void>(make).copy(tree); |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
538 |
mref2.expr = exprTree; |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
539 |
Pair<Symbol, ?> lookupRes = |
16805
b419336382fd
8010922: Cleanup: add support for ad-hoc method check logic
mcimadamore
parents:
16566
diff
changeset
|
540 |
rs.resolveMemberReference(tree, env, mref2, exprTree.type, |
b419336382fd
8010922: Cleanup: add support for ad-hoc method check logic
mcimadamore
parents:
16566
diff
changeset
|
541 |
tree.name, argtypes.toList(), null, true, rs.arityMethodCheck); |
16294
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
542 |
switch (lookupRes.fst.kind) { |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
543 |
//note: as argtypes are erroneous types, type-errors must |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
544 |
//have been caused by arity mismatch |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
545 |
case Kinds.ABSENT_MTH: |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
546 |
case Kinds.WRONG_MTH: |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
547 |
case Kinds.WRONG_MTHS: |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
548 |
case Kinds.STATICERR: |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
549 |
case Kinds.MISSING_ENCL: |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
550 |
checkContext.report(null, diags.fragment("incompatible.arg.types.in.mref")); |
0c291a3cd60d
8007462: Fix provisional applicability for method references
mcimadamore
parents:
15717
diff
changeset
|
551 |
} |
15374
fb8f6acf09cc
8005244: Implement overload resolution as per latest spec EDR
mcimadamore
parents:
15039
diff
changeset
|
552 |
} |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
553 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
554 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
555 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
556 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
557 |
/** an empty deferred attribution context - all methods throw exceptions */ |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
558 |
final DeferredAttrContext emptyDeferredAttrContext = |
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
559 |
new DeferredAttrContext(AttrMode.CHECK, null, MethodResolutionPhase.BOX, null, null, null) { |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
560 |
@Override |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
561 |
void addDeferredAttrNode(DeferredType dt, ResultInfo ri, List<Type> stuckVars) { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
562 |
Assert.error("Empty deferred context!"); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
563 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
564 |
@Override |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
565 |
void complete() { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
566 |
Assert.error("Empty deferred context!"); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
567 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
568 |
}; |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
569 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
570 |
/** |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
571 |
* Map a list of types possibly containing one or more deferred types |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
572 |
* into a list of ordinary types. Each deferred type D is mapped into a type T, |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
573 |
* where T is computed by retrieving the type that has already been |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
574 |
* computed for D during a previous deferred attribution round of the given kind. |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
575 |
*/ |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
576 |
class DeferredTypeMap extends Type.Mapping { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
577 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
578 |
DeferredAttrContext deferredAttrContext; |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
579 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
580 |
protected DeferredTypeMap(AttrMode mode, Symbol msym, MethodResolutionPhase phase) { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
581 |
super(String.format("deferredTypeMap[%s]", mode)); |
15706
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
582 |
this.deferredAttrContext = new DeferredAttrContext(mode, msym, phase, |
37a81a6987ac
8007479: Refactor DeferredAttrContext so that it points to parent context
mcimadamore
parents:
15705
diff
changeset
|
583 |
infer.emptyContext, emptyDeferredAttrContext, types.noWarnings); |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
584 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
585 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
586 |
protected boolean validState(DeferredType dt) { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
587 |
return dt.mode != null && |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
588 |
deferredAttrContext.mode.ordinal() <= dt.mode.ordinal(); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
589 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
590 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
591 |
@Override |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
592 |
public Type apply(Type t) { |
14359
d4099818ab70
7200915: convert TypeTags from a series of small ints to an enum
jjg
parents:
14258
diff
changeset
|
593 |
if (!t.hasTag(DEFERRED)) { |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
594 |
return t.map(this); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
595 |
} else { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
596 |
DeferredType dt = (DeferredType)t; |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
597 |
Assert.check(validState(dt)); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
598 |
return typeOf(dt); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
599 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
600 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
601 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
602 |
protected Type typeOf(DeferredType dt) { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
603 |
switch (deferredAttrContext.mode) { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
604 |
case CHECK: |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
605 |
return dt.tree.type == null ? Type.noType : dt.tree.type; |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
606 |
case SPECULATIVE: |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
607 |
return dt.speculativeType(deferredAttrContext.msym, deferredAttrContext.phase); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
608 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
609 |
Assert.error(); |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
610 |
return null; |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
611 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
612 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
613 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
614 |
/** |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
615 |
* Specialized recovery deferred mapping. |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
616 |
* Each deferred type D is mapped into a type T, where T is computed either by |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
617 |
* (i) retrieving the type that has already been computed for D during a previous |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
618 |
* attribution round (as before), or (ii) by synthesizing a new type R for D |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
619 |
* (the latter step is useful in a recovery scenario). |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
620 |
*/ |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
621 |
public class RecoveryDeferredTypeMap extends DeferredTypeMap { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
622 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
623 |
public RecoveryDeferredTypeMap(AttrMode mode, Symbol msym, MethodResolutionPhase phase) { |
14547 | 624 |
super(mode, msym, phase != null ? phase : MethodResolutionPhase.BOX); |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
625 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
626 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
627 |
@Override |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
628 |
protected Type typeOf(DeferredType dt) { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
629 |
Type owntype = super.typeOf(dt); |
14547 | 630 |
return owntype == Type.noType ? |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
631 |
recover(dt) : owntype; |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
632 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
633 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
634 |
@Override |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
635 |
protected boolean validState(DeferredType dt) { |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
636 |
return true; |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
637 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
638 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
639 |
/** |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
640 |
* Synthesize a type for a deferred type that hasn't been previously |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
641 |
* reduced to an ordinary type. Functional deferred types and conditionals |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
642 |
* are mapped to themselves, in order to have a richer diagnostic |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
643 |
* representation. Remaining deferred types are attributed using |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
644 |
* a default expected type (j.l.Object). |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
645 |
*/ |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
646 |
private Type recover(DeferredType dt) { |
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
647 |
dt.check(attr.new RecoveryInfo(deferredAttrContext)); |
14547 | 648 |
return super.apply(dt); |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
649 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
650 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
651 |
|
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
652 |
/** |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
653 |
* Retrieves the list of inference variables that need to be inferred before |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
654 |
* an AST node can be type-checked |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
655 |
*/ |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
656 |
@SuppressWarnings("fallthrough") |
14547 | 657 |
List<Type> stuckVars(JCTree tree, Env<AttrContext> env, ResultInfo resultInfo) { |
658 |
if (resultInfo.pt.hasTag(NONE) || resultInfo.pt.isErroneous()) { |
|
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
659 |
return List.nil(); |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
660 |
} else { |
15039
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
661 |
return stuckVarsInternal(tree, resultInfo.pt, resultInfo.checkContext.inferenceContext()); |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
662 |
} |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
663 |
} |
80190ab051c0
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changeset
|
664 |
//where |
80190ab051c0
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changeset
|
665 |
private List<Type> stuckVarsInternal(JCTree tree, Type pt, Infer.InferenceContext inferenceContext) { |
80190ab051c0
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changeset
|
666 |
StuckChecker sc = new StuckChecker(pt, inferenceContext); |
14058
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changeset
|
667 |
sc.scan(tree); |
c7ec7facdd20
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changeset
|
668 |
return List.from(sc.stuckVars); |
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changeset
|
669 |
} |
15039
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
670 |
|
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
671 |
/** |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
672 |
* A special tree scanner that would only visit portions of a given tree. |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
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diff
changeset
|
673 |
* The set of nodes visited by the scanner can be customized at construction-time. |
80190ab051c0
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diff
changeset
|
674 |
*/ |
80190ab051c0
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diff
changeset
|
675 |
abstract static class FilterScanner extends TreeScanner { |
80190ab051c0
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diff
changeset
|
676 |
|
80190ab051c0
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parents:
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diff
changeset
|
677 |
final Filter<JCTree> treeFilter; |
80190ab051c0
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diff
changeset
|
678 |
|
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
679 |
FilterScanner(final Set<JCTree.Tag> validTags) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
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diff
changeset
|
680 |
this.treeFilter = new Filter<JCTree>() { |
80190ab051c0
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changeset
|
681 |
public boolean accepts(JCTree t) { |
80190ab051c0
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diff
changeset
|
682 |
return validTags.contains(t.getTag()); |
80190ab051c0
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parents:
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changeset
|
683 |
} |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
684 |
}; |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
685 |
} |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
686 |
|
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
687 |
@Override |
80190ab051c0
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parents:
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diff
changeset
|
688 |
public void scan(JCTree tree) { |
80190ab051c0
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diff
changeset
|
689 |
if (tree != null) { |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
690 |
if (treeFilter.accepts(tree)) { |
80190ab051c0
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changeset
|
691 |
super.scan(tree); |
80190ab051c0
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diff
changeset
|
692 |
} else { |
80190ab051c0
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parents:
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diff
changeset
|
693 |
skip(tree); |
80190ab051c0
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parents:
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diff
changeset
|
694 |
} |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
695 |
} |
80190ab051c0
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mcimadamore
parents:
14547
diff
changeset
|
696 |
} |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
697 |
|
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
698 |
/** |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
699 |
* handler that is executed when a node has been discarded |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
700 |
*/ |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
701 |
abstract void skip(JCTree tree); |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
702 |
} |
80190ab051c0
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mcimadamore
parents:
14547
diff
changeset
|
703 |
|
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
704 |
/** |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
705 |
* A tree scanner suitable for visiting the target-type dependent nodes of |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
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diff
changeset
|
706 |
* a given argument expression. |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
707 |
*/ |
80190ab051c0
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parents:
14547
diff
changeset
|
708 |
static class PolyScanner extends FilterScanner { |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
709 |
|
80190ab051c0
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mcimadamore
parents:
14547
diff
changeset
|
710 |
PolyScanner() { |
80190ab051c0
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parents:
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diff
changeset
|
711 |
super(EnumSet.of(CONDEXPR, PARENS, LAMBDA, REFERENCE)); |
80190ab051c0
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mcimadamore
parents:
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diff
changeset
|
712 |
} |
80190ab051c0
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mcimadamore
parents:
14547
diff
changeset
|
713 |
|
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
714 |
@Override |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
715 |
void skip(JCTree tree) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
716 |
//do nothing |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
717 |
} |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
718 |
} |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
719 |
|
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
720 |
/** |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
721 |
* A tree scanner suitable for visiting the target-type dependent nodes nested |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
722 |
* within a lambda expression body. |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
723 |
*/ |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
724 |
static class LambdaReturnScanner extends FilterScanner { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
725 |
|
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
726 |
LambdaReturnScanner() { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
727 |
super(EnumSet.of(BLOCK, CASE, CATCH, DOLOOP, FOREACHLOOP, |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
728 |
FORLOOP, RETURN, SYNCHRONIZED, SWITCH, TRY, WHILELOOP)); |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
729 |
} |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
730 |
|
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
731 |
@Override |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
732 |
void skip(JCTree tree) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
733 |
//do nothing |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
734 |
} |
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
735 |
} |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
736 |
|
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
737 |
/** |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
738 |
* This visitor is used to check that structural expressions conform |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
739 |
* to their target - this step is required as inference could end up |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
740 |
* inferring types that make some of the nested expressions incompatible |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
741 |
* with their corresponding instantiated target |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
742 |
*/ |
15039
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
743 |
class StuckChecker extends PolyScanner { |
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
744 |
|
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
745 |
Type pt; |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
746 |
Infer.InferenceContext inferenceContext; |
14547 | 747 |
Set<Type> stuckVars = new LinkedHashSet<Type>(); |
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
748 |
|
15039
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
749 |
StuckChecker(Type pt, Infer.InferenceContext inferenceContext) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
750 |
this.pt = pt; |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
751 |
this.inferenceContext = inferenceContext; |
14058
c7ec7facdd20
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mcimadamore
parents:
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diff
changeset
|
752 |
} |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
753 |
|
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
754 |
@Override |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
755 |
public void visitLambda(JCLambda tree) { |
15039
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
756 |
if (inferenceContext.inferenceVars().contains(pt)) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
757 |
stuckVars.add(pt); |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
758 |
} |
15374
fb8f6acf09cc
8005244: Implement overload resolution as per latest spec EDR
mcimadamore
parents:
15039
diff
changeset
|
759 |
if (!types.isFunctionalInterface(pt)) { |
15039
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
760 |
return; |
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
761 |
} |
15039
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
762 |
Type descType = types.findDescriptorType(pt); |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
763 |
List<Type> freeArgVars = inferenceContext.freeVarsIn(descType.getParameterTypes()); |
15374
fb8f6acf09cc
8005244: Implement overload resolution as per latest spec EDR
mcimadamore
parents:
15039
diff
changeset
|
764 |
if (tree.paramKind == JCLambda.ParameterKind.IMPLICIT && |
15039
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
765 |
freeArgVars.nonEmpty()) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
766 |
stuckVars.addAll(freeArgVars); |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
767 |
} |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
768 |
scanLambdaBody(tree, descType.getReturnType()); |
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
769 |
} |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
770 |
|
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
771 |
@Override |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
772 |
public void visitReference(JCMemberReference tree) { |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
773 |
scan(tree.expr); |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
774 |
if (inferenceContext.inferenceVars().contains(pt)) { |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
775 |
stuckVars.add(pt); |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
776 |
return; |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
777 |
} |
15374
fb8f6acf09cc
8005244: Implement overload resolution as per latest spec EDR
mcimadamore
parents:
15039
diff
changeset
|
778 |
if (!types.isFunctionalInterface(pt)) { |
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
779 |
return; |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
780 |
} |
14547 | 781 |
|
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
782 |
Type descType = types.findDescriptorType(pt); |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
783 |
List<Type> freeArgVars = inferenceContext.freeVarsIn(descType.getParameterTypes()); |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
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diff
changeset
|
784 |
stuckVars.addAll(freeArgVars); |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
785 |
} |
c7ec7facdd20
7177385: Add attribution support for lambda expressions
mcimadamore
parents:
14057
diff
changeset
|
786 |
|
15039
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
787 |
void scanLambdaBody(JCLambda lambda, final Type pt) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
788 |
if (lambda.getBodyKind() == JCTree.JCLambda.BodyKind.EXPRESSION) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
789 |
stuckVars.addAll(stuckVarsInternal(lambda.body, pt, inferenceContext)); |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
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parents:
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diff
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|
790 |
} else { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
791 |
LambdaReturnScanner lambdaScanner = new LambdaReturnScanner() { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
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diff
changeset
|
792 |
@Override |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
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diff
changeset
|
793 |
public void visitReturn(JCReturn tree) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
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parents:
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diff
changeset
|
794 |
if (tree.expr != null) { |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
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diff
changeset
|
795 |
stuckVars.addAll(stuckVarsInternal(tree.expr, pt, inferenceContext)); |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
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diff
changeset
|
796 |
} |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
797 |
} |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
mcimadamore
parents:
14547
diff
changeset
|
798 |
}; |
80190ab051c0
8005184: Restructure DeferredAttr to allow pluggable deferred type completers
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parents:
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diff
changeset
|
799 |
lambdaScanner.scan(lambda.body); |
14058
c7ec7facdd20
7177385: Add attribution support for lambda expressions
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diff
changeset
|
800 |
} |
14057
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
801 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
802 |
} |
b4b0377b8dba
7177387: Add target-typing support in method context
mcimadamore
parents:
diff
changeset
|
803 |
} |