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