duke@1: /*
xdono@117:  * Copyright 1999-2008 Sun Microsystems, Inc.  All Rights Reserved.
duke@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1:  *
duke@1:  * This code is free software; you can redistribute it and/or modify it
duke@1:  * under the terms of the GNU General Public License version 2 only, as
duke@1:  * published by the Free Software Foundation.  Sun designates this
duke@1:  * particular file as subject to the "Classpath" exception as provided
duke@1:  * by Sun in the LICENSE file that accompanied this code.
duke@1:  *
duke@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@1:  * version 2 for more details (a copy is included in the LICENSE file that
duke@1:  * accompanied this code).
duke@1:  *
duke@1:  * You should have received a copy of the GNU General Public License version
duke@1:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1:  *
duke@1:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@1:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@1:  * have any questions.
duke@1:  */
duke@1: 
duke@1: package com.sun.tools.javac.comp;
duke@1: 
duke@1: import com.sun.tools.javac.util.*;
duke@1: import com.sun.tools.javac.code.*;
duke@1: 
duke@1: /** Contains information specific to the attribute and enter
duke@1:  *  passes, to be used in place of the generic field in environments.
duke@1:  *
duke@1:  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
duke@1:  *  you write code that depends on this, you do so at your own risk.
duke@1:  *  This code and its internal interfaces are subject to change or
duke@1:  *  deletion without notice.</b>
duke@1:  */
duke@1: public class AttrContext {
duke@1: 
duke@1:     /** The scope of local symbols.
duke@1:      */
duke@1:     Scope scope = null;
duke@1: 
duke@1:     /** The number of enclosing `static' modifiers.
duke@1:      */
duke@1:     int staticLevel = 0;
duke@1: 
duke@1:     /** Is this an environment for a this(...) or super(...) call?
duke@1:      */
duke@1:     boolean isSelfCall = false;
duke@1: 
duke@1:     /** Are we evaluating the selector of a `super' or type name?
duke@1:      */
duke@1:     boolean selectSuper = false;
duke@1: 
duke@1:     /** Are arguments to current function applications boxed into an array for varargs?
duke@1:      */
duke@1:     boolean varArgs = false;
duke@1: 
duke@1:     /** A list of type variables that are all-quantifed in current context.
duke@1:      */
duke@1:     List<Type> tvars = List.nil();
duke@1: 
duke@1:     /** A record of the lint/SuppressWarnings currently in effect
duke@1:      */
duke@1:     Lint lint;
duke@1: 
mcimadamore@94:     /** The variable whose initializer is being attributed
mcimadamore@94:      * useful for detecting self-references in variable initializers
mcimadamore@94:      */
mcimadamore@94:     Symbol enclVar = null;
mcimadamore@94: 
duke@1:     /** Duplicate this context, replacing scope field and copying all others.
duke@1:      */
duke@1:     AttrContext dup(Scope scope) {
duke@1:         AttrContext info = new AttrContext();
duke@1:         info.scope = scope;
duke@1:         info.staticLevel = staticLevel;
duke@1:         info.isSelfCall = isSelfCall;
duke@1:         info.selectSuper = selectSuper;
duke@1:         info.varArgs = varArgs;
duke@1:         info.tvars = tvars;
duke@1:         info.lint = lint;
mcimadamore@94:         info.enclVar = enclVar;
duke@1:         return info;
duke@1:     }
duke@1: 
duke@1:     /** Duplicate this context, copying all fields.
duke@1:      */
duke@1:     AttrContext dup() {
duke@1:         return dup(scope);
duke@1:     }
duke@1: 
duke@1:     public Iterable<Symbol> getLocalElements() {
duke@1:         if (scope == null)
duke@1:             return List.nil();
duke@1:         return scope.getElements();
duke@1:     }
duke@1: 
duke@1:     public String toString() {
duke@1:         return "AttrContext[" + scope.toString() + "]";
duke@1:     }
duke@1: }