Thu, 05 Jan 2017 18:58:06 +0000
8168774: Polymorhic signature method check crashes javac
Summary: Check for polysig method assumes arity is greater than zero
Reviewed-by: vromero
1 /*
2 * Copyright (c) 1999, 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 */
26 package com.sun.tools.javac.code;
28 import java.util.EnumSet;
29 import java.util.Locale;
31 import com.sun.source.tree.MemberReferenceTree;
32 import com.sun.tools.javac.api.Formattable;
33 import com.sun.tools.javac.api.Messages;
34 import static com.sun.tools.javac.code.Flags.*;
35 import static com.sun.tools.javac.code.TypeTag.CLASS;
36 import static com.sun.tools.javac.code.TypeTag.PACKAGE;
37 import static com.sun.tools.javac.code.TypeTag.TYPEVAR;
39 /** Internal symbol kinds, which distinguish between elements of
40 * different subclasses of Symbol. Symbol kinds are organized so they can be
41 * or'ed to sets.
42 *
43 * <p><b>This is NOT part of any supported API.
44 * If you write code that depends on this, you do so at your own risk.
45 * This code and its internal interfaces are subject to change or
46 * deletion without notice.</b>
47 */
48 public class Kinds {
50 private Kinds() {} // uninstantiable
52 /** The empty set of kinds.
53 */
54 public final static int NIL = 0;
56 /** The kind of package symbols.
57 */
58 public final static int PCK = 1 << 0;
60 /** The kind of type symbols (classes, interfaces and type variables).
61 */
62 public final static int TYP = 1 << 1;
64 /** The kind of variable symbols.
65 */
66 public final static int VAR = 1 << 2;
68 /** The kind of values (variables or non-variable expressions), includes VAR.
69 */
70 public final static int VAL = (1 << 3) | VAR;
72 /** The kind of methods.
73 */
74 public final static int MTH = 1 << 4;
76 /** Poly kind, for deferred types.
77 */
78 public final static int POLY = 1 << 5;
80 /** The error kind, which includes all other kinds.
81 */
82 public final static int ERR = (1 << 6) - 1;
84 /** The set of all kinds.
85 */
86 public final static int AllKinds = ERR;
88 /** Kinds for erroneous symbols that complement the above
89 */
90 public static final int ERRONEOUS = 1 << 7;
91 public static final int AMBIGUOUS = ERRONEOUS + 1; // ambiguous reference
92 public static final int HIDDEN = ERRONEOUS + 2; // hidden method or field
93 public static final int STATICERR = ERRONEOUS + 3; // nonstatic member from static context
94 public static final int MISSING_ENCL = ERRONEOUS + 4; // missing enclosing class
95 public static final int ABSENT_VAR = ERRONEOUS + 5; // missing variable
96 public static final int WRONG_MTHS = ERRONEOUS + 6; // methods with wrong arguments
97 public static final int WRONG_MTH = ERRONEOUS + 7; // one method with wrong arguments
98 public static final int ABSENT_MTH = ERRONEOUS + 8; // missing method
99 public static final int ABSENT_TYP = ERRONEOUS + 9; // missing type
100 public static final int WRONG_STATICNESS = ERRONEOUS + 10; // wrong staticness for method references
102 public enum KindName implements Formattable {
103 ANNOTATION("kindname.annotation"),
104 CONSTRUCTOR("kindname.constructor"),
105 INTERFACE("kindname.interface"),
106 ENUM("kindname.enum"),
107 STATIC("kindname.static"),
108 TYPEVAR("kindname.type.variable"),
109 BOUND("kindname.type.variable.bound"),
110 VAR("kindname.variable"),
111 VAL("kindname.value"),
112 METHOD("kindname.method"),
113 CLASS("kindname.class"),
114 STATIC_INIT("kindname.static.init"),
115 INSTANCE_INIT("kindname.instance.init"),
116 PACKAGE("kindname.package");
118 private final String name;
120 KindName(String name) {
121 this.name = name;
122 }
124 public String toString() {
125 return name;
126 }
128 public String getKind() {
129 return "Kindname";
130 }
132 public String toString(Locale locale, Messages messages) {
133 String s = toString();
134 return messages.getLocalizedString(locale, "compiler.misc." + s);
135 }
136 }
138 /** A KindName representing a given symbol kind
139 */
140 public static KindName kindName(int kind) {
141 switch (kind) {
142 case PCK: return KindName.PACKAGE;
143 case TYP: return KindName.CLASS;
144 case VAR: return KindName.VAR;
145 case VAL: return KindName.VAL;
146 case MTH: return KindName.METHOD;
147 default : throw new AssertionError("Unexpected kind: "+kind);
148 }
149 }
151 public static KindName kindName(MemberReferenceTree.ReferenceMode mode) {
152 switch (mode) {
153 case INVOKE: return KindName.METHOD;
154 case NEW: return KindName.CONSTRUCTOR;
155 default : throw new AssertionError("Unexpected mode: "+ mode);
156 }
157 }
159 /** A KindName representing a given symbol
160 */
161 public static KindName kindName(Symbol sym) {
162 switch (sym.getKind()) {
163 case PACKAGE:
164 return KindName.PACKAGE;
166 case ENUM:
167 return KindName.ENUM;
169 case ANNOTATION_TYPE:
170 case CLASS:
171 return KindName.CLASS;
173 case INTERFACE:
174 return KindName.INTERFACE;
176 case TYPE_PARAMETER:
177 return KindName.TYPEVAR;
179 case ENUM_CONSTANT:
180 case FIELD:
181 case PARAMETER:
182 case LOCAL_VARIABLE:
183 case EXCEPTION_PARAMETER:
184 case RESOURCE_VARIABLE:
185 return KindName.VAR;
187 case CONSTRUCTOR:
188 return KindName.CONSTRUCTOR;
190 case METHOD:
191 return KindName.METHOD;
192 case STATIC_INIT:
193 return KindName.STATIC_INIT;
194 case INSTANCE_INIT:
195 return KindName.INSTANCE_INIT;
197 default:
198 if (sym.kind == VAL)
199 // I don't think this can happen but it can't harm
200 // playing it safe --ahe
201 return KindName.VAL;
202 else
203 throw new AssertionError("Unexpected kind: "+sym.getKind());
204 }
205 }
207 /** A set of KindName(s) representing a set of symbol's kinds.
208 */
209 public static EnumSet<KindName> kindNames(int kind) {
210 EnumSet<KindName> kinds = EnumSet.noneOf(KindName.class);
211 if ((kind & VAL) != 0)
212 kinds.add(((kind & VAL) == VAR) ? KindName.VAR : KindName.VAL);
213 if ((kind & MTH) != 0) kinds.add(KindName.METHOD);
214 if ((kind & TYP) != 0) kinds.add(KindName.CLASS);
215 if ((kind & PCK) != 0) kinds.add(KindName.PACKAGE);
216 return kinds;
217 }
219 /** A KindName representing the kind of a given class/interface type.
220 */
221 public static KindName typeKindName(Type t) {
222 if (t.hasTag(TYPEVAR) ||
223 t.hasTag(CLASS) && (t.tsym.flags() & COMPOUND) != 0)
224 return KindName.BOUND;
225 else if (t.hasTag(PACKAGE))
226 return KindName.PACKAGE;
227 else if ((t.tsym.flags_field & ANNOTATION) != 0)
228 return KindName.ANNOTATION;
229 else if ((t.tsym.flags_field & INTERFACE) != 0)
230 return KindName.INTERFACE;
231 else
232 return KindName.CLASS;
233 }
235 /** A KindName representing the kind of a missing symbol, given an
236 * error kind.
237 * */
238 public static KindName absentKind(int kind) {
239 switch (kind) {
240 case ABSENT_VAR:
241 return KindName.VAR;
242 case WRONG_MTHS: case WRONG_MTH: case ABSENT_MTH: case WRONG_STATICNESS:
243 return KindName.METHOD;
244 case ABSENT_TYP:
245 return KindName.CLASS;
246 default:
247 throw new AssertionError("Unexpected kind: "+kind);
248 }
249 }
250 }