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src/share/classes/com/sun/tools/javac/code/Kinds.java@93012e2a5d1d (annotated)

src/share/classes/com/sun/tools/javac/code/Kinds.java

Sat, 07 Nov 2020 10:30:02 +0800

author

aoqi

date

Sat, 07 Nov 2020 10:30:02 +0800

changeset 3938

93012e2a5d1d

parent 2525

2eb010b6cb22

permissions

-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset eb6ee6a5f2fe

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1999, 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.code;
aoqi@0	27
aoqi@0	28	import java.util.EnumSet;
aoqi@0	29	import java.util.Locale;
aoqi@0	30
aoqi@0	31	import com.sun.source.tree.MemberReferenceTree;
aoqi@0	32	import com.sun.tools.javac.api.Formattable;
aoqi@0	33	import com.sun.tools.javac.api.Messages;
aoqi@0	34	import static com.sun.tools.javac.code.Flags.*;
aoqi@0	35	import static com.sun.tools.javac.code.TypeTag.CLASS;
aoqi@0	36	import static com.sun.tools.javac.code.TypeTag.PACKAGE;
aoqi@0	37	import static com.sun.tools.javac.code.TypeTag.TYPEVAR;
aoqi@0	38
aoqi@0	39	/** Internal symbol kinds, which distinguish between elements of
aoqi@0	40	* different subclasses of Symbol. Symbol kinds are organized so they can be
aoqi@0	41	* or'ed to sets.
aoqi@0	42	*
aoqi@0	43	* <p><b>This is NOT part of any supported API.
aoqi@0	44	* If you write code that depends on this, you do so at your own risk.
aoqi@0	45	* This code and its internal interfaces are subject to change or
aoqi@0	46	* deletion without notice.</b>
aoqi@0	47	*/
aoqi@0	48	public class Kinds {
aoqi@0	49
aoqi@0	50	private Kinds() {} // uninstantiable
aoqi@0	51
aoqi@0	52	/** The empty set of kinds.
aoqi@0	53	*/
aoqi@0	54	public final static int NIL = 0;
aoqi@0	55
aoqi@0	56	/** The kind of package symbols.
aoqi@0	57	*/
aoqi@0	58	public final static int PCK = 1 << 0;
aoqi@0	59
aoqi@0	60	/** The kind of type symbols (classes, interfaces and type variables).
aoqi@0	61	*/
aoqi@0	62	public final static int TYP = 1 << 1;
aoqi@0	63
aoqi@0	64	/** The kind of variable symbols.
aoqi@0	65	*/
aoqi@0	66	public final static int VAR = 1 << 2;
aoqi@0	67
aoqi@0	68	/** The kind of values (variables or non-variable expressions), includes VAR.
aoqi@0	69	*/
aoqi@0	70	public final static int VAL = (1 << 3) | VAR;
aoqi@0	71
aoqi@0	72	/** The kind of methods.
aoqi@0	73	*/
aoqi@0	74	public final static int MTH = 1 << 4;
aoqi@0	75
aoqi@0	76	/** Poly kind, for deferred types.
aoqi@0	77	*/
aoqi@0	78	public final static int POLY = 1 << 5;
aoqi@0	79
aoqi@0	80	/** The error kind, which includes all other kinds.
aoqi@0	81	*/
aoqi@0	82	public final static int ERR = (1 << 6) - 1;
aoqi@0	83
aoqi@0	84	/** The set of all kinds.
aoqi@0	85	*/
aoqi@0	86	public final static int AllKinds = ERR;
aoqi@0	87
aoqi@0	88	/** Kinds for erroneous symbols that complement the above
aoqi@0	89	*/
aoqi@0	90	public static final int ERRONEOUS = 1 << 7;
aoqi@0	91	public static final int AMBIGUOUS = ERRONEOUS + 1; // ambiguous reference
aoqi@0	92	public static final int HIDDEN = ERRONEOUS + 2; // hidden method or field
aoqi@0	93	public static final int STATICERR = ERRONEOUS + 3; // nonstatic member from static context
aoqi@0	94	public static final int MISSING_ENCL = ERRONEOUS + 4; // missing enclosing class
aoqi@0	95	public static final int ABSENT_VAR = ERRONEOUS + 5; // missing variable
aoqi@0	96	public static final int WRONG_MTHS = ERRONEOUS + 6; // methods with wrong arguments
aoqi@0	97	public static final int WRONG_MTH = ERRONEOUS + 7; // one method with wrong arguments
aoqi@0	98	public static final int ABSENT_MTH = ERRONEOUS + 8; // missing method
aoqi@0	99	public static final int ABSENT_TYP = ERRONEOUS + 9; // missing type
aoqi@0	100	public static final int WRONG_STATICNESS = ERRONEOUS + 10; // wrong staticness for method references
aoqi@0	101
aoqi@0	102	public enum KindName implements Formattable {
aoqi@0	103	ANNOTATION("kindname.annotation"),
aoqi@0	104	CONSTRUCTOR("kindname.constructor"),
aoqi@0	105	INTERFACE("kindname.interface"),
aoqi@0	106	ENUM("kindname.enum"),
aoqi@0	107	STATIC("kindname.static"),
aoqi@0	108	TYPEVAR("kindname.type.variable"),
aoqi@0	109	BOUND("kindname.type.variable.bound"),
aoqi@0	110	VAR("kindname.variable"),
aoqi@0	111	VAL("kindname.value"),
aoqi@0	112	METHOD("kindname.method"),
aoqi@0	113	CLASS("kindname.class"),
aoqi@0	114	STATIC_INIT("kindname.static.init"),
aoqi@0	115	INSTANCE_INIT("kindname.instance.init"),
aoqi@0	116	PACKAGE("kindname.package");
aoqi@0	117
aoqi@0	118	private final String name;
aoqi@0	119
aoqi@0	120	KindName(String name) {
aoqi@0	121	this.name = name;
aoqi@0	122	}
aoqi@0	123
aoqi@0	124	public String toString() {
aoqi@0	125	return name;
aoqi@0	126	}
aoqi@0	127
aoqi@0	128	public String getKind() {
aoqi@0	129	return "Kindname";
aoqi@0	130	}
aoqi@0	131
aoqi@0	132	public String toString(Locale locale, Messages messages) {
aoqi@0	133	String s = toString();
aoqi@0	134	return messages.getLocalizedString(locale, "compiler.misc." + s);
aoqi@0	135	}
aoqi@0	136	}
aoqi@0	137
aoqi@0	138	/** A KindName representing a given symbol kind
aoqi@0	139	*/
aoqi@0	140	public static KindName kindName(int kind) {
aoqi@0	141	switch (kind) {
aoqi@0	142	case PCK: return KindName.PACKAGE;
aoqi@0	143	case TYP: return KindName.CLASS;
aoqi@0	144	case VAR: return KindName.VAR;
aoqi@0	145	case VAL: return KindName.VAL;
aoqi@0	146	case MTH: return KindName.METHOD;
aoqi@0	147	default : throw new AssertionError("Unexpected kind: "+kind);
aoqi@0	148	}
aoqi@0	149	}
aoqi@0	150
aoqi@0	151	public static KindName kindName(MemberReferenceTree.ReferenceMode mode) {
aoqi@0	152	switch (mode) {
aoqi@0	153	case INVOKE: return KindName.METHOD;
aoqi@0	154	case NEW: return KindName.CONSTRUCTOR;
aoqi@0	155	default : throw new AssertionError("Unexpected mode: "+ mode);
aoqi@0	156	}
aoqi@0	157	}
aoqi@0	158
aoqi@0	159	/** A KindName representing a given symbol
aoqi@0	160	*/
aoqi@0	161	public static KindName kindName(Symbol sym) {
aoqi@0	162	switch (sym.getKind()) {
aoqi@0	163	case PACKAGE:
aoqi@0	164	return KindName.PACKAGE;
aoqi@0	165
aoqi@0	166	case ENUM:
aoqi@0	167	return KindName.ENUM;
aoqi@0	168
aoqi@0	169	case ANNOTATION_TYPE:
aoqi@0	170	case CLASS:
aoqi@0	171	return KindName.CLASS;
aoqi@0	172
aoqi@0	173	case INTERFACE:
aoqi@0	174	return KindName.INTERFACE;
aoqi@0	175
aoqi@0	176	case TYPE_PARAMETER:
aoqi@0	177	return KindName.TYPEVAR;
aoqi@0	178
aoqi@0	179	case ENUM_CONSTANT:
aoqi@0	180	case FIELD:
aoqi@0	181	case PARAMETER:
aoqi@0	182	case LOCAL_VARIABLE:
aoqi@0	183	case EXCEPTION_PARAMETER:
aoqi@0	184	case RESOURCE_VARIABLE:
aoqi@0	185	return KindName.VAR;
aoqi@0	186
aoqi@0	187	case CONSTRUCTOR:
aoqi@0	188	return KindName.CONSTRUCTOR;
aoqi@0	189
aoqi@0	190	case METHOD:
aoqi@0	191	return KindName.METHOD;
aoqi@0	192	case STATIC_INIT:
aoqi@0	193	return KindName.STATIC_INIT;
aoqi@0	194	case INSTANCE_INIT:
aoqi@0	195	return KindName.INSTANCE_INIT;
aoqi@0	196
aoqi@0	197	default:
aoqi@0	198	if (sym.kind == VAL)
aoqi@0	199	// I don't think this can happen but it can't harm
aoqi@0	200	// playing it safe --ahe
aoqi@0	201	return KindName.VAL;
aoqi@0	202	else
aoqi@0	203	throw new AssertionError("Unexpected kind: "+sym.getKind());
aoqi@0	204	}
aoqi@0	205	}
aoqi@0	206
aoqi@0	207	/** A set of KindName(s) representing a set of symbol's kinds.
aoqi@0	208	*/
aoqi@0	209	public static EnumSet<KindName> kindNames(int kind) {
aoqi@0	210	EnumSet<KindName> kinds = EnumSet.noneOf(KindName.class);
aoqi@0	211	if ((kind & VAL) != 0)
aoqi@0	212	kinds.add(((kind & VAL) == VAR) ? KindName.VAR : KindName.VAL);
aoqi@0	213	if ((kind & MTH) != 0) kinds.add(KindName.METHOD);
aoqi@0	214	if ((kind & TYP) != 0) kinds.add(KindName.CLASS);
aoqi@0	215	if ((kind & PCK) != 0) kinds.add(KindName.PACKAGE);
aoqi@0	216	return kinds;
aoqi@0	217	}
aoqi@0	218
aoqi@0	219	/** A KindName representing the kind of a given class/interface type.
aoqi@0	220	*/
aoqi@0	221	public static KindName typeKindName(Type t) {
aoqi@0	222	if (t.hasTag(TYPEVAR) ||
aoqi@0	223	t.hasTag(CLASS) && (t.tsym.flags() & COMPOUND) != 0)
aoqi@0	224	return KindName.BOUND;
aoqi@0	225	else if (t.hasTag(PACKAGE))
aoqi@0	226	return KindName.PACKAGE;
aoqi@0	227	else if ((t.tsym.flags_field & ANNOTATION) != 0)
aoqi@0	228	return KindName.ANNOTATION;
aoqi@0	229	else if ((t.tsym.flags_field & INTERFACE) != 0)
aoqi@0	230	return KindName.INTERFACE;
aoqi@0	231	else
aoqi@0	232	return KindName.CLASS;
aoqi@0	233	}
aoqi@0	234
aoqi@0	235	/** A KindName representing the kind of a missing symbol, given an
aoqi@0	236	* error kind.
aoqi@0	237	* */
aoqi@0	238	public static KindName absentKind(int kind) {
aoqi@0	239	switch (kind) {
aoqi@0	240	case ABSENT_VAR:
aoqi@0	241	return KindName.VAR;
aoqi@0	242	case WRONG_MTHS: case WRONG_MTH: case ABSENT_MTH: case WRONG_STATICNESS:
aoqi@0	243	return KindName.METHOD;
aoqi@0	244	case ABSENT_TYP:
aoqi@0	245	return KindName.CLASS;
aoqi@0	246	default:
aoqi@0	247	throw new AssertionError("Unexpected kind: "+kind);
aoqi@0	248	}
aoqi@0	249	}
aoqi@0	250	}