jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/comp/AttrContext.java@9ca8d8713094

     1 /*

     2  * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.tools.javac.comp;

    28 import com.sun.tools.javac.util.*;

    29 import com.sun.tools.javac.code.*;

    31 /** Contains information specific to the attribute and enter

    32  *  passes, to be used in place of the generic field in environments.

    33  *

    34  *  <p><b>This is NOT part of any supported API.

    35  *  If you write code that depends on this, you do so at your own risk.

    36  *  This code and its internal interfaces are subject to change or

    37  *  deletion without notice.</b>

    38  */

    39 public class AttrContext {

    41     /** The scope of local symbols.

    42      */

    43     Scope scope = null;

    45     /** The number of enclosing `static' modifiers.

    46      */

    47     int staticLevel = 0;

    49     /** Is this an environment for a this(...) or super(...) call?

    50      */

    51     boolean isSelfCall = false;

    53     /** Are we evaluating the selector of a `super' or type name?

    54      */

    55     boolean selectSuper = false;

    57     /** Is the current target of lambda expression or method reference serializable?

    58      */

    59     boolean isSerializable = false;

    61     /** Are arguments to current function applications boxed into an array for varargs?

    62      */

    63     Resolve.MethodResolutionPhase pendingResolutionPhase = null;

    65     /** A record of the lint/SuppressWarnings currently in effect

    66      */

    67     Lint lint;

    69     /** The variable whose initializer is being attributed

    70      * useful for detecting self-references in variable initializers

    71      */

    72     Symbol enclVar = null;

    74     /** ResultInfo to be used for attributing 'return' statement expressions

    75      * (set by Attr.visitMethod and Attr.visitLambda)

    76      */

    77     Attr.ResultInfo returnResult = null;

    79     /** Symbol corresponding to the site of a qualified default super call

    80      */

    81     Type defaultSuperCallSite = null;

    83     /** Duplicate this context, replacing scope field and copying all others.

    84      */

    85     AttrContext dup(Scope scope) {

    86         AttrContext info = new AttrContext();

    87         info.scope = scope;

    88         info.staticLevel = staticLevel;

    89         info.isSelfCall = isSelfCall;

    90         info.selectSuper = selectSuper;

    91         info.pendingResolutionPhase = pendingResolutionPhase;

    92         info.lint = lint;

    93         info.enclVar = enclVar;

    94         info.returnResult = returnResult;

    95         info.defaultSuperCallSite = defaultSuperCallSite;

    96         info.isSerializable = isSerializable;

    97         return info;

    98     }

   100     /** Duplicate this context, copying all fields.

   101      */

   102     AttrContext dup() {

   103         return dup(scope);

   104     }

   106     public Iterable<Symbol> getLocalElements() {

   107         if (scope == null)

   108             return List.nil();

   109         return scope.getElements();

   110     }

   112     boolean lastResolveVarargs() {

   113         return pendingResolutionPhase != null &&

   114                 pendingResolutionPhase.isVarargsRequired();

   115     }

   117     @Override

   118     public String toString() {

   119         return "AttrContext[" + scope.toString() + "]";

   120     }

   121 }

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