1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.tools.javac.comp; 27 28 import java.util.HashMap; 29 30 import com.sun.tools.javac.util.Context; 31 32 /** Partial map to record which compiler phases have been executed 33 * for each compilation unit. Used for ATTR and FLOW phases. 34 * 35 * <p><b>This is NOT part of any supported API. 36 * If you write code that depends on this, you do so at your own risk. 37 * This code and its internal interfaces are subject to change or 38 * deletion without notice.</b> 39 */ 40 public class CompileStates extends HashMap<Env<AttrContext>, CompileStates.CompileState> { 41 /** The context key for the compile states. */ 42 protected static final Context.Key<CompileStates> compileStatesKey = 43 new Context.Key<CompileStates>(); 44 45 /** Get the CompileStates instance for this context. */ instance(Context context)46 public static CompileStates instance(Context context) { 47 CompileStates instance = context.get(compileStatesKey); 48 if (instance == null) { 49 instance = new CompileStates(context); 50 } 51 return instance; 52 } 53 54 /** Ordered list of compiler phases for each compilation unit. */ 55 public enum CompileState { 56 INIT(0), 57 PARSE(1), 58 ENTER(2), 59 PROCESS(3), 60 ATTR(4), 61 FLOW(5), 62 TRANSTYPES(6), 63 UNLAMBDA(7), 64 LOWER(8), 65 GENERATE(9); 66 CompileState(int value)67 CompileState(int value) { 68 this.value = value; 69 } isAfter(CompileState other)70 public boolean isAfter(CompileState other) { 71 return value > other.value; 72 } max(CompileState a, CompileState b)73 public static CompileState max(CompileState a, CompileState b) { 74 return a.value > b.value ? a : b; 75 } 76 private final int value; 77 }; 78 79 private static final long serialVersionUID = 1812267524140424433L; 80 81 protected Context context; 82 CompileStates(Context context)83 public CompileStates(Context context) { 84 this.context = context; 85 context.put(compileStatesKey, this); 86 } 87 isDone(Env<AttrContext> env, CompileState cs)88 public boolean isDone(Env<AttrContext> env, CompileState cs) { 89 CompileState ecs = get(env); 90 return (ecs != null) && !cs.isAfter(ecs); 91 } 92 } 93