1 /*

     2  * Copyright 1999-2006 Sun Microsystems, Inc.  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.  Sun designates this

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

     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

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

    27 

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

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

    30 

    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 API supported by Sun Microsystems.  If

    35  *  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 {

    40 

    41     /** The scope of local symbols.

    42      */

    43     Scope scope = null;

    44 

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

    46      */

    47     int staticLevel = 0;

    48 

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

    50      */

    51     boolean isSelfCall = false;

    52 

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

    54      */

    55     boolean selectSuper = false;

    56 

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

    58      */

    59     boolean varArgs = false;

    60 

    61     /** A list of type variables that are all-quantifed in current context.

    62      */

    63     List<Type> tvars = List.nil();

    64 

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

    66      */

    67     Lint lint;

    68 

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

    70      */

    71     AttrContext dup(Scope scope) {

    72         AttrContext info = new AttrContext();

    73         info.scope = scope;

    74         info.staticLevel = staticLevel;

    75         info.isSelfCall = isSelfCall;

    76         info.selectSuper = selectSuper;

    77         info.varArgs = varArgs;

    78         info.tvars = tvars;

    79         info.lint = lint;

    80         return info;

    81     }

    82 

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

    84      */

    85     AttrContext dup() {

    86         return dup(scope);

    87     }

    88 

    89     public Iterable<Symbol> getLocalElements() {

    90         if (scope == null)

    91             return List.nil();

    92         return scope.getElements();

    93     }

    94 

    95     public String toString() {

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

    97     }

    98 }