|
1 /* |
|
2 * Copyright (c) 2012, 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. |
|
8 * |
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT |
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
12 * version 2 for more details (a copy is included in the LICENSE file that |
|
13 * accompanied this code). |
|
14 * |
|
15 * You should have received a copy of the GNU General Public License version |
|
16 * 2 along with this work; if not, write to the Free Software Foundation, |
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
18 * |
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
20 * or visit www.oracle.com if you need additional information or have any |
|
21 * questions. |
|
22 */ |
|
23 |
|
24 /* |
|
25 * @test |
|
26 * @bug 8003280 |
|
27 * @summary Add lambda tests |
|
28 * Check that self/forward references from lambda expressions behave |
|
29 * consistently w.r.t. local inner classes |
|
30 */ |
|
31 |
|
32 import java.net.URI; |
|
33 import java.util.Arrays; |
|
34 import javax.tools.Diagnostic; |
|
35 import javax.tools.JavaCompiler; |
|
36 import javax.tools.JavaFileObject; |
|
37 import javax.tools.SimpleJavaFileObject; |
|
38 import javax.tools.StandardJavaFileManager; |
|
39 import javax.tools.ToolProvider; |
|
40 import com.sun.source.util.JavacTask; |
|
41 |
|
42 public class TestSelfRef { |
|
43 |
|
44 static int checkCount = 0; |
|
45 |
|
46 enum RefKind { |
|
47 SELF_LAMBDA("SAM s = x->{ System.out.println(s); };", true, false), |
|
48 FORWARD_LAMBDA("SAM s = x->{ System.out.println(f); };\nObject f = null;", false, true), |
|
49 SELF_ANON("Object s = new Object() { void test() { System.out.println(s); } };", true, false), |
|
50 FORWARD_ANON("Object s = new Object() { void test() { System.out.println(f); } }; Object f = null;", false, true); |
|
51 |
|
52 String refStr; |
|
53 boolean selfRef; |
|
54 boolean forwardRef; |
|
55 |
|
56 private RefKind(String refStr, boolean selfRef, boolean forwardRef) { |
|
57 this.refStr = refStr; |
|
58 this.selfRef = selfRef; |
|
59 this.forwardRef = forwardRef; |
|
60 } |
|
61 } |
|
62 |
|
63 enum EnclosingKind { |
|
64 TOPLEVEL("class C { #S }"), |
|
65 MEMBER_INNER("class Outer { class C { #S } }"), |
|
66 NESTED_INNER("class Outer { static class C { #S } }"); |
|
67 |
|
68 String enclStr; |
|
69 |
|
70 private EnclosingKind(String enclStr) { |
|
71 this.enclStr = enclStr; |
|
72 } |
|
73 } |
|
74 |
|
75 enum InnerKind { |
|
76 NONE("#R"), |
|
77 LOCAL_NONE("class Local { #R }"), |
|
78 LOCAL_MTH("class Local { void test() { #R } }"), |
|
79 ANON_NONE("new Object() { #R };"), |
|
80 ANON_MTH("new Object() { void test() { #R } };"); |
|
81 |
|
82 String innerStr; |
|
83 |
|
84 private InnerKind(String innerStr) { |
|
85 this.innerStr = innerStr; |
|
86 } |
|
87 |
|
88 boolean inMethodContext(SiteKind sk) { |
|
89 switch (this) { |
|
90 case LOCAL_MTH: |
|
91 case ANON_MTH: return true; |
|
92 case NONE: return sk != SiteKind.NONE; |
|
93 default: |
|
94 return false; |
|
95 } |
|
96 } |
|
97 } |
|
98 |
|
99 enum SiteKind { |
|
100 NONE("#I"), |
|
101 STATIC_INIT("static { #I }"), |
|
102 INSTANCE_INIT("{ #I }"), |
|
103 CONSTRUCTOR("C() { #I }"), |
|
104 METHOD("void test() { #I }"); |
|
105 |
|
106 String siteStr; |
|
107 |
|
108 private SiteKind(String siteStr) { |
|
109 this.siteStr = siteStr; |
|
110 } |
|
111 } |
|
112 |
|
113 public static void main(String... args) throws Exception { |
|
114 |
|
115 //create default shared JavaCompiler - reused across multiple compilations |
|
116 JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); |
|
117 StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null); |
|
118 |
|
119 for (EnclosingKind ek : EnclosingKind.values()) { |
|
120 for (SiteKind sk : SiteKind.values()) { |
|
121 if (sk == SiteKind.STATIC_INIT && ek == EnclosingKind.MEMBER_INNER) |
|
122 continue; |
|
123 for (InnerKind ik : InnerKind.values()) { |
|
124 if (ik != InnerKind.NONE && sk == SiteKind.NONE) |
|
125 break; |
|
126 for (RefKind rk : RefKind.values()) { |
|
127 new TestSelfRef(ek, sk, ik, rk).run(comp, fm); |
|
128 } |
|
129 } |
|
130 } |
|
131 } |
|
132 System.out.println("Total check executed: " + checkCount); |
|
133 } |
|
134 |
|
135 EnclosingKind ek; |
|
136 SiteKind sk; |
|
137 InnerKind ik; |
|
138 RefKind rk; |
|
139 JavaSource source; |
|
140 DiagnosticChecker diagChecker; |
|
141 |
|
142 TestSelfRef(EnclosingKind ek, SiteKind sk, InnerKind ik, RefKind rk) { |
|
143 this.ek = ek; |
|
144 this.sk = sk; |
|
145 this.ik = ik; |
|
146 this.rk = rk; |
|
147 this.source = new JavaSource(); |
|
148 this.diagChecker = new DiagnosticChecker(); |
|
149 } |
|
150 |
|
151 class JavaSource extends SimpleJavaFileObject { |
|
152 |
|
153 String bodyTemplate = "interface SAM { void test(Object o); }\n#B"; |
|
154 String source; |
|
155 |
|
156 public JavaSource() { |
|
157 super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); |
|
158 source = bodyTemplate.replace("#B", |
|
159 ek.enclStr.replace("#S", sk.siteStr.replace("#I", ik.innerStr.replace("#R", rk.refStr)))); |
|
160 } |
|
161 |
|
162 @Override |
|
163 public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
|
164 return source; |
|
165 } |
|
166 } |
|
167 |
|
168 void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception { |
|
169 JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker, |
|
170 null, null, Arrays.asList(source)); |
|
171 try { |
|
172 ct.analyze(); |
|
173 } catch (Throwable ex) { |
|
174 throw new AssertionError("Error thron when compiling the following code:\n" + source.getCharContent(true)); |
|
175 } |
|
176 check(); |
|
177 } |
|
178 |
|
179 boolean isErrorExpected() { |
|
180 //illegal forward ref |
|
181 boolean result = ik.inMethodContext(sk) && (rk.selfRef || rk.forwardRef); |
|
182 result |= (rk == RefKind.SELF_LAMBDA || rk == RefKind.FORWARD_LAMBDA); |
|
183 return result; |
|
184 } |
|
185 |
|
186 void check() { |
|
187 checkCount++; |
|
188 boolean errorExpected = isErrorExpected(); |
|
189 if (diagChecker.errorFound != errorExpected) { |
|
190 throw new Error("invalid diagnostics for source:\n" + |
|
191 source.getCharContent(true) + |
|
192 "\nFound error: " + diagChecker.errorFound + |
|
193 "\nExpected error: " + errorExpected); |
|
194 } |
|
195 } |
|
196 |
|
197 static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> { |
|
198 |
|
199 boolean errorFound; |
|
200 |
|
201 public void report(Diagnostic<? extends JavaFileObject> diagnostic) { |
|
202 if (diagnostic.getKind() == Diagnostic.Kind.ERROR) { |
|
203 errorFound = true; |
|
204 } |
|
205 } |
|
206 } |
|
207 } |