1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/share/classes/com/sun/tools/javac/comp/AttrContext.java Wed Apr 27 01:34:52 2016 +0800 1.3 @@ -0,0 +1,121 @@ 1.4 +/* 1.5 + * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. Oracle designates this 1.11 + * particular file as subject to the "Classpath" exception as provided 1.12 + * by Oracle in the LICENSE file that accompanied this code. 1.13 + * 1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.17 + * version 2 for more details (a copy is included in the LICENSE file that 1.18 + * accompanied this code). 1.19 + * 1.20 + * You should have received a copy of the GNU General Public License version 1.21 + * 2 along with this work; if not, write to the Free Software Foundation, 1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.23 + * 1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.25 + * or visit www.oracle.com if you need additional information or have any 1.26 + * questions. 1.27 + */ 1.28 + 1.29 +package com.sun.tools.javac.comp; 1.30 + 1.31 +import com.sun.tools.javac.util.*; 1.32 +import com.sun.tools.javac.code.*; 1.33 + 1.34 +/** Contains information specific to the attribute and enter 1.35 + * passes, to be used in place of the generic field in environments. 1.36 + * 1.37 + * <p><b>This is NOT part of any supported API. 1.38 + * If you write code that depends on this, you do so at your own risk. 1.39 + * This code and its internal interfaces are subject to change or 1.40 + * deletion without notice.</b> 1.41 + */ 1.42 +public class AttrContext { 1.43 + 1.44 + /** The scope of local symbols. 1.45 + */ 1.46 + Scope scope = null; 1.47 + 1.48 + /** The number of enclosing `static' modifiers. 1.49 + */ 1.50 + int staticLevel = 0; 1.51 + 1.52 + /** Is this an environment for a this(...) or super(...) call? 1.53 + */ 1.54 + boolean isSelfCall = false; 1.55 + 1.56 + /** Are we evaluating the selector of a `super' or type name? 1.57 + */ 1.58 + boolean selectSuper = false; 1.59 + 1.60 + /** Is the current target of lambda expression or method reference serializable? 1.61 + */ 1.62 + boolean isSerializable = false; 1.63 + 1.64 + /** Are arguments to current function applications boxed into an array for varargs? 1.65 + */ 1.66 + Resolve.MethodResolutionPhase pendingResolutionPhase = null; 1.67 + 1.68 + /** A record of the lint/SuppressWarnings currently in effect 1.69 + */ 1.70 + Lint lint; 1.71 + 1.72 + /** The variable whose initializer is being attributed 1.73 + * useful for detecting self-references in variable initializers 1.74 + */ 1.75 + Symbol enclVar = null; 1.76 + 1.77 + /** ResultInfo to be used for attributing 'return' statement expressions 1.78 + * (set by Attr.visitMethod and Attr.visitLambda) 1.79 + */ 1.80 + Attr.ResultInfo returnResult = null; 1.81 + 1.82 + /** Symbol corresponding to the site of a qualified default super call 1.83 + */ 1.84 + Type defaultSuperCallSite = null; 1.85 + 1.86 + /** Duplicate this context, replacing scope field and copying all others. 1.87 + */ 1.88 + AttrContext dup(Scope scope) { 1.89 + AttrContext info = new AttrContext(); 1.90 + info.scope = scope; 1.91 + info.staticLevel = staticLevel; 1.92 + info.isSelfCall = isSelfCall; 1.93 + info.selectSuper = selectSuper; 1.94 + info.pendingResolutionPhase = pendingResolutionPhase; 1.95 + info.lint = lint; 1.96 + info.enclVar = enclVar; 1.97 + info.returnResult = returnResult; 1.98 + info.defaultSuperCallSite = defaultSuperCallSite; 1.99 + info.isSerializable = isSerializable; 1.100 + return info; 1.101 + } 1.102 + 1.103 + /** Duplicate this context, copying all fields. 1.104 + */ 1.105 + AttrContext dup() { 1.106 + return dup(scope); 1.107 + } 1.108 + 1.109 + public Iterable<Symbol> getLocalElements() { 1.110 + if (scope == null) 1.111 + return List.nil(); 1.112 + return scope.getElements(); 1.113 + } 1.114 + 1.115 + boolean lastResolveVarargs() { 1.116 + return pendingResolutionPhase != null && 1.117 + pendingResolutionPhase.isVarargsRequired(); 1.118 + } 1.119 + 1.120 + @Override 1.121 + public String toString() { 1.122 + return "AttrContext[" + scope.toString() + "]"; 1.123 + } 1.124 +}