aoqi@0: /*
aoqi@0:  * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.tools.javac.comp;
aoqi@0: 
aoqi@0: import com.sun.tools.javac.util.*;
aoqi@0: import com.sun.tools.javac.code.*;
aoqi@0: 
aoqi@0: /** Contains information specific to the attribute and enter
aoqi@0:  *  passes, to be used in place of the generic field in environments.
aoqi@0:  *
aoqi@0:  *  <p><b>This is NOT part of any supported API.
aoqi@0:  *  If you write code that depends on this, you do so at your own risk.
aoqi@0:  *  This code and its internal interfaces are subject to change or
aoqi@0:  *  deletion without notice.</b>
aoqi@0:  */
aoqi@0: public class AttrContext {
aoqi@0: 
aoqi@0:     /** The scope of local symbols.
aoqi@0:      */
aoqi@0:     Scope scope = null;
aoqi@0: 
aoqi@0:     /** The number of enclosing `static' modifiers.
aoqi@0:      */
aoqi@0:     int staticLevel = 0;
aoqi@0: 
aoqi@0:     /** Is this an environment for a this(...) or super(...) call?
aoqi@0:      */
aoqi@0:     boolean isSelfCall = false;
aoqi@0: 
aoqi@0:     /** Are we evaluating the selector of a `super' or type name?
aoqi@0:      */
aoqi@0:     boolean selectSuper = false;
aoqi@0: 
aoqi@0:     /** Is the current target of lambda expression or method reference serializable?
aoqi@0:      */
aoqi@0:     boolean isSerializable = false;
aoqi@0: 
aoqi@0:     /** Are arguments to current function applications boxed into an array for varargs?
aoqi@0:      */
aoqi@0:     Resolve.MethodResolutionPhase pendingResolutionPhase = null;
aoqi@0: 
aoqi@0:     /** A record of the lint/SuppressWarnings currently in effect
aoqi@0:      */
aoqi@0:     Lint lint;
aoqi@0: 
aoqi@0:     /** The variable whose initializer is being attributed
aoqi@0:      * useful for detecting self-references in variable initializers
aoqi@0:      */
aoqi@0:     Symbol enclVar = null;
aoqi@0: 
aoqi@0:     /** ResultInfo to be used for attributing 'return' statement expressions
aoqi@0:      * (set by Attr.visitMethod and Attr.visitLambda)
aoqi@0:      */
aoqi@0:     Attr.ResultInfo returnResult = null;
aoqi@0: 
aoqi@0:     /** Symbol corresponding to the site of a qualified default super call
aoqi@0:      */
aoqi@0:     Type defaultSuperCallSite = null;
aoqi@0: 
aoqi@0:     /** Duplicate this context, replacing scope field and copying all others.
aoqi@0:      */
aoqi@0:     AttrContext dup(Scope scope) {
aoqi@0:         AttrContext info = new AttrContext();
aoqi@0:         info.scope = scope;
aoqi@0:         info.staticLevel = staticLevel;
aoqi@0:         info.isSelfCall = isSelfCall;
aoqi@0:         info.selectSuper = selectSuper;
aoqi@0:         info.pendingResolutionPhase = pendingResolutionPhase;
aoqi@0:         info.lint = lint;
aoqi@0:         info.enclVar = enclVar;
aoqi@0:         info.returnResult = returnResult;
aoqi@0:         info.defaultSuperCallSite = defaultSuperCallSite;
aoqi@0:         info.isSerializable = isSerializable;
aoqi@0:         return info;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Duplicate this context, copying all fields.
aoqi@0:      */
aoqi@0:     AttrContext dup() {
aoqi@0:         return dup(scope);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public Iterable<Symbol> getLocalElements() {
aoqi@0:         if (scope == null)
aoqi@0:             return List.nil();
aoqi@0:         return scope.getElements();
aoqi@0:     }
aoqi@0: 
aoqi@0:     boolean lastResolveVarargs() {
aoqi@0:         return pendingResolutionPhase != null &&
aoqi@0:                 pendingResolutionPhase.isVarargsRequired();
aoqi@0:     }
aoqi@0: 
aoqi@0:     @Override
aoqi@0:     public String toString() {
aoqi@0:         return "AttrContext[" + scope.toString() + "]";
aoqi@0:     }
aoqi@0: }