131 lines
4.4 KiB
Java
131 lines
4.4 KiB
Java
/*
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* Copyright (c) 1999, 2014, 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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import com.sun.tools.javac.tree.JCTree;
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import com.sun.tools.javac.util.*;
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import com.sun.tools.javac.code.*;
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/** Contains information specific to the attribute and enter
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* passes, to be used in place of the generic field in environments.
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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 AttrContext {
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/** The scope of local symbols.
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*/
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Scope scope = null;
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/** The number of enclosing `static' modifiers.
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*/
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int staticLevel = 0;
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/** Is this an environment for a this(...) or super(...) call?
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*/
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boolean isSelfCall = false;
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/** Are we evaluating the selector of a `super' or type name?
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*/
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boolean selectSuper = false;
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/** Is the current target of lambda expression or method reference serializable?
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*/
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boolean isSerializable = false;
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/** Are arguments to current function applications boxed into an array for varargs?
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*/
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Resolve.MethodResolutionPhase pendingResolutionPhase = null;
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/** A record of the lint/SuppressWarnings currently in effect
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*/
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Lint lint;
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/** The variable whose initializer is being attributed
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* useful for detecting self-references in variable initializers
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*/
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Symbol enclVar = null;
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/** ResultInfo to be used for attributing 'return' statement expressions
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* (set by Attr.visitMethod and Attr.visitLambda)
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*/
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Attr.ResultInfo returnResult = null;
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/** Symbol corresponding to the site of a qualified default super call
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*/
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Type defaultSuperCallSite = null;
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/** Tree that when non null, is to be preferentially used in diagnostics.
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* Usually Env<AttrContext>.tree is the tree to be referred to in messages,
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* but this may not be true during the window a method is looked up in enclosing
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* contexts (JDK-8145466)
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*/
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JCTree preferredTreeForDiagnostics;
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/** Duplicate this context, replacing scope field and copying all others.
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*/
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AttrContext dup(Scope scope) {
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AttrContext info = new AttrContext();
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info.scope = scope;
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info.staticLevel = staticLevel;
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info.isSelfCall = isSelfCall;
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info.selectSuper = selectSuper;
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info.pendingResolutionPhase = pendingResolutionPhase;
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info.lint = lint;
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info.enclVar = enclVar;
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info.returnResult = returnResult;
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info.defaultSuperCallSite = defaultSuperCallSite;
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info.isSerializable = isSerializable;
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info.preferredTreeForDiagnostics = preferredTreeForDiagnostics;
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return info;
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}
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/** Duplicate this context, copying all fields.
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*/
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AttrContext dup() {
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return dup(scope);
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}
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public Iterable<Symbol> getLocalElements() {
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if (scope == null)
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return List.nil();
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return scope.getElements();
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}
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boolean lastResolveVarargs() {
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return pendingResolutionPhase != null &&
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pendingResolutionPhase.isVarargsRequired();
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}
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@Override
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public String toString() {
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return "AttrContext[" + scope.toString() + "]";
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}
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}
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