93 lines
3.2 KiB
Java
93 lines
3.2 KiB
Java
/*
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.tools.javac.comp;
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import java.util.HashMap;
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import com.sun.tools.javac.util.Context;
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/** Partial map to record which compiler phases have been executed
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* for each compilation unit. Used for ATTR and FLOW phases.
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*
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* <p><b>This is NOT part of any supported API.
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* If you write code that depends on this, you do so at your own risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b>
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*/
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public class CompileStates extends HashMap<Env<AttrContext>, CompileStates.CompileState> {
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/** The context key for the compile states. */
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protected static final Context.Key<CompileStates> compileStatesKey =
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new Context.Key<CompileStates>();
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/** Get the CompileStates instance for this context. */
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public static CompileStates instance(Context context) {
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CompileStates instance = context.get(compileStatesKey);
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if (instance == null) {
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instance = new CompileStates(context);
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}
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return instance;
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}
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/** Ordered list of compiler phases for each compilation unit. */
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public enum CompileState {
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INIT(0),
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PARSE(1),
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ENTER(2),
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PROCESS(3),
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ATTR(4),
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FLOW(5),
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TRANSTYPES(6),
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UNLAMBDA(7),
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LOWER(8),
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GENERATE(9);
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CompileState(int value) {
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this.value = value;
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}
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public boolean isAfter(CompileState other) {
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return value > other.value;
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}
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public static CompileState max(CompileState a, CompileState b) {
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return a.value > b.value ? a : b;
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}
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private final int value;
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};
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private static final long serialVersionUID = 1812267524140424433L;
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protected Context context;
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public CompileStates(Context context) {
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this.context = context;
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context.put(compileStatesKey, this);
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}
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public boolean isDone(Env<AttrContext> env, CompileState cs) {
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CompileState ecs = get(env);
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return (ecs != null) && !cs.isAfter(ecs);
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}
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}
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