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src/share/classes/com/sun/tools/javac/comp/CompileStates.java@8b4e1421a9b7 (annotated)

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

Fri, 01 Nov 2013 21:43:27 +0100

author

jlahoda

date

Fri, 01 Nov 2013 21:43:27 +0100

changeset 2179

8b4e1421a9b7

parent 0

959103a6100f

permissions

-rw-r--r--

8027310: Annotation Processor crashes with NPE
Summary: JCAnnotation.attribute is null when annotation type is unavailable
Reviewed-by: jjg, jfranck

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, 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.HashMap;
aoqi@0	29
aoqi@0	30	import com.sun.tools.javac.util.Context;
aoqi@0	31
aoqi@0	32	/** Partial map to record which compiler phases have been executed
aoqi@0	33	* for each compilation unit. Used for ATTR and FLOW phases.
aoqi@0	34	*
aoqi@0	35	* <p><b>This is NOT part of any supported API.
aoqi@0	36	* If you write code that depends on this, you do so at your own risk.
aoqi@0	37	* This code and its internal interfaces are subject to change or
aoqi@0	38	* deletion without notice.</b>
aoqi@0	39	*/
aoqi@0	40	public class CompileStates extends HashMap<Env<AttrContext>, CompileStates.CompileState> {
aoqi@0	41	/** The context key for the compile states. */
aoqi@0	42	protected static final Context.Key<CompileStates> compileStatesKey =
aoqi@0	43	new Context.Key<CompileStates>();
aoqi@0	44
aoqi@0	45	/** Get the CompileStates instance for this context. */
aoqi@0	46	public static CompileStates instance(Context context) {
aoqi@0	47	CompileStates instance = context.get(compileStatesKey);
aoqi@0	48	if (instance == null) {
aoqi@0	49	instance = new CompileStates(context);
aoqi@0	50	}
aoqi@0	51	return instance;
aoqi@0	52	}
aoqi@0	53
aoqi@0	54	/** Ordered list of compiler phases for each compilation unit. */
aoqi@0	55	public enum CompileState {
aoqi@0	56	INIT(0),
aoqi@0	57	PARSE(1),
aoqi@0	58	ENTER(2),
aoqi@0	59	PROCESS(3),
aoqi@0	60	ATTR(4),
aoqi@0	61	FLOW(5),
aoqi@0	62	TRANSTYPES(6),
aoqi@0	63	UNLAMBDA(7),
aoqi@0	64	LOWER(8),
aoqi@0	65	GENERATE(9);
aoqi@0	66
aoqi@0	67	CompileState(int value) {
aoqi@0	68	this.value = value;
aoqi@0	69	}
aoqi@0	70	public boolean isAfter(CompileState other) {
aoqi@0	71	return value > other.value;
aoqi@0	72	}
aoqi@0	73	public static CompileState max(CompileState a, CompileState b) {
aoqi@0	74	return a.value > b.value ? a : b;
aoqi@0	75	}
aoqi@0	76	private final int value;
aoqi@0	77	};
aoqi@0	78
aoqi@0	79	private static final long serialVersionUID = 1812267524140424433L;
aoqi@0	80
aoqi@0	81	protected Context context;
aoqi@0	82
aoqi@0	83	public CompileStates(Context context) {
aoqi@0	84	this.context = context;
aoqi@0	85	context.put(compileStatesKey, this);
aoqi@0	86	}
aoqi@0	87
aoqi@0	88	public boolean isDone(Env<AttrContext> env, CompileState cs) {
aoqi@0	89	CompileState ecs = get(env);
aoqi@0	90	return (ecs != null) && !cs.isAfter(ecs);
aoqi@0	91	}
aoqi@0	92	}