Sat, 07 Nov 2020 10:30:02 +0800
Added tag mips-jdk8u275-b01 for changeset eb6ee6a5f2fe
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | package com.sun.tools.javac.comp; |
aoqi@0 | 27 | |
aoqi@0 | 28 | import java.util.Collection; |
aoqi@0 | 29 | import java.util.HashMap; |
aoqi@0 | 30 | import com.sun.tools.javac.code.Symbol.TypeSymbol; |
aoqi@0 | 31 | import com.sun.tools.javac.util.Context; |
aoqi@0 | 32 | |
aoqi@0 | 33 | /** This class contains the type environments used by Enter, MemberEnter, |
aoqi@0 | 34 | * Attr, DeferredAttr, and Lower. |
aoqi@0 | 35 | * |
aoqi@0 | 36 | * <p><b>This is NOT part of any supported API. |
aoqi@0 | 37 | * If you write code that depends on this, you do so at your own risk. |
aoqi@0 | 38 | * This code and its internal interfaces are subject to change or |
aoqi@0 | 39 | * deletion without notice.</b> |
aoqi@0 | 40 | */ |
aoqi@0 | 41 | class TypeEnvs { |
aoqi@0 | 42 | private static final long serialVersionUID = 571524752489954631L; |
aoqi@0 | 43 | |
aoqi@0 | 44 | protected static final Context.Key<TypeEnvs> typeEnvsKey = new Context.Key<>(); |
aoqi@0 | 45 | public static TypeEnvs instance(Context context) { |
aoqi@0 | 46 | TypeEnvs instance = context.get(typeEnvsKey); |
aoqi@0 | 47 | if (instance == null) |
aoqi@0 | 48 | instance = new TypeEnvs(context); |
aoqi@0 | 49 | return instance; |
aoqi@0 | 50 | } |
aoqi@0 | 51 | |
aoqi@0 | 52 | private HashMap<TypeSymbol,Env<AttrContext>> map; |
aoqi@0 | 53 | protected TypeEnvs(Context context) { |
aoqi@0 | 54 | map = new HashMap<>(); |
aoqi@0 | 55 | context.put(typeEnvsKey, this); |
aoqi@0 | 56 | } |
aoqi@0 | 57 | |
aoqi@0 | 58 | Env<AttrContext> get(TypeSymbol sym) { return map.get(sym); } |
aoqi@0 | 59 | Env<AttrContext> put(TypeSymbol sym, Env<AttrContext> env) { return map.put(sym, env); } |
aoqi@0 | 60 | Env<AttrContext> remove(TypeSymbol sym) { return map.remove(sym); } |
aoqi@0 | 61 | Collection<Env<AttrContext>> values() { return map.values(); } |
aoqi@0 | 62 | void clear() { map.clear(); } |
aoqi@0 | 63 | } |