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src/share/classes/com/sun/tools/javac/comp/TypeEnvs.java@f4df97bf5392 (annotated)

src/share/classes/com/sun/tools/javac/comp/TypeEnvs.java

Mon, 24 Nov 2014 14:55:38 -0800

author

vromero

date

Mon, 24 Nov 2014 14:55:38 -0800

changeset 2610

f4df97bf5392

parent 0

959103a6100f

permissions

-rw-r--r--

8059921: Missing compile error in Java 8 mode for Interface.super.field access
Reviewed-by: mcimadamore, jlahoda

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	}