1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/lambda/TestSelfRef.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,207 @@
1.4 +/*
1.5 + * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 8003280
1.30 + * @summary Add lambda tests
1.31 + * Check that self/forward references from lambda expressions behave
1.32 + * consistently w.r.t. local inner classes
1.33 + */
1.34 +
1.35 +import java.net.URI;
1.36 +import java.util.Arrays;
1.37 +import javax.tools.Diagnostic;
1.38 +import javax.tools.JavaCompiler;
1.39 +import javax.tools.JavaFileObject;
1.40 +import javax.tools.SimpleJavaFileObject;
1.41 +import javax.tools.StandardJavaFileManager;
1.42 +import javax.tools.ToolProvider;
1.43 +import com.sun.source.util.JavacTask;
1.44 +
1.45 +public class TestSelfRef {
1.46 +
1.47 + static int checkCount = 0;
1.48 +
1.49 + enum RefKind {
1.50 + SELF_LAMBDA("SAM s = x->{ System.out.println(s); };", true, false),
1.51 + FORWARD_LAMBDA("SAM s = x->{ System.out.println(f); };\nObject f = null;", false, true),
1.52 + SELF_ANON("Object s = new Object() { void test() { System.out.println(s); } };", true, false),
1.53 + FORWARD_ANON("Object s = new Object() { void test() { System.out.println(f); } }; Object f = null;", false, true);
1.54 +
1.55 + String refStr;
1.56 + boolean selfRef;
1.57 + boolean forwardRef;
1.58 +
1.59 + private RefKind(String refStr, boolean selfRef, boolean forwardRef) {
1.60 + this.refStr = refStr;
1.61 + this.selfRef = selfRef;
1.62 + this.forwardRef = forwardRef;
1.63 + }
1.64 + }
1.65 +
1.66 + enum EnclosingKind {
1.67 + TOPLEVEL("class C { #S }"),
1.68 + MEMBER_INNER("class Outer { class C { #S } }"),
1.69 + NESTED_INNER("class Outer { static class C { #S } }");
1.70 +
1.71 + String enclStr;
1.72 +
1.73 + private EnclosingKind(String enclStr) {
1.74 + this.enclStr = enclStr;
1.75 + }
1.76 + }
1.77 +
1.78 + enum InnerKind {
1.79 + NONE("#R"),
1.80 + LOCAL_NONE("class Local { #R }"),
1.81 + LOCAL_MTH("class Local { void test() { #R } }"),
1.82 + ANON_NONE("new Object() { #R };"),
1.83 + ANON_MTH("new Object() { void test() { #R } };");
1.84 +
1.85 + String innerStr;
1.86 +
1.87 + private InnerKind(String innerStr) {
1.88 + this.innerStr = innerStr;
1.89 + }
1.90 +
1.91 + boolean inMethodContext(SiteKind sk) {
1.92 + switch (this) {
1.93 + case LOCAL_MTH:
1.94 + case ANON_MTH: return true;
1.95 + case NONE: return sk != SiteKind.NONE;
1.96 + default:
1.97 + return false;
1.98 + }
1.99 + }
1.100 + }
1.101 +
1.102 + enum SiteKind {
1.103 + NONE("#I"),
1.104 + STATIC_INIT("static { #I }"),
1.105 + INSTANCE_INIT("{ #I }"),
1.106 + CONSTRUCTOR("C() { #I }"),
1.107 + METHOD("void test() { #I }");
1.108 +
1.109 + String siteStr;
1.110 +
1.111 + private SiteKind(String siteStr) {
1.112 + this.siteStr = siteStr;
1.113 + }
1.114 + }
1.115 +
1.116 + public static void main(String... args) throws Exception {
1.117 +
1.118 + //create default shared JavaCompiler - reused across multiple compilations
1.119 + JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
1.120 + StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
1.121 +
1.122 + for (EnclosingKind ek : EnclosingKind.values()) {
1.123 + for (SiteKind sk : SiteKind.values()) {
1.124 + if (sk == SiteKind.STATIC_INIT && ek == EnclosingKind.MEMBER_INNER)
1.125 + continue;
1.126 + for (InnerKind ik : InnerKind.values()) {
1.127 + if (ik != InnerKind.NONE && sk == SiteKind.NONE)
1.128 + break;
1.129 + for (RefKind rk : RefKind.values()) {
1.130 + new TestSelfRef(ek, sk, ik, rk).run(comp, fm);
1.131 + }
1.132 + }
1.133 + }
1.134 + }
1.135 + System.out.println("Total check executed: " + checkCount);
1.136 + }
1.137 +
1.138 + EnclosingKind ek;
1.139 + SiteKind sk;
1.140 + InnerKind ik;
1.141 + RefKind rk;
1.142 + JavaSource source;
1.143 + DiagnosticChecker diagChecker;
1.144 +
1.145 + TestSelfRef(EnclosingKind ek, SiteKind sk, InnerKind ik, RefKind rk) {
1.146 + this.ek = ek;
1.147 + this.sk = sk;
1.148 + this.ik = ik;
1.149 + this.rk = rk;
1.150 + this.source = new JavaSource();
1.151 + this.diagChecker = new DiagnosticChecker();
1.152 + }
1.153 +
1.154 + class JavaSource extends SimpleJavaFileObject {
1.155 +
1.156 + String bodyTemplate = "interface SAM { void test(Object o); }\n#B";
1.157 + String source;
1.158 +
1.159 + public JavaSource() {
1.160 + super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
1.161 + source = bodyTemplate.replace("#B",
1.162 + ek.enclStr.replace("#S", sk.siteStr.replace("#I", ik.innerStr.replace("#R", rk.refStr))));
1.163 + }
1.164 +
1.165 + @Override
1.166 + public CharSequence getCharContent(boolean ignoreEncodingErrors) {
1.167 + return source;
1.168 + }
1.169 + }
1.170 +
1.171 + void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
1.172 + JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
1.173 + null, null, Arrays.asList(source));
1.174 + try {
1.175 + ct.analyze();
1.176 + } catch (Throwable ex) {
1.177 + throw new AssertionError("Error thron when compiling the following code:\n" + source.getCharContent(true));
1.178 + }
1.179 + check();
1.180 + }
1.181 +
1.182 + boolean isErrorExpected() {
1.183 + //illegal forward ref
1.184 + boolean result = ik.inMethodContext(sk) && (rk.selfRef || rk.forwardRef);
1.185 + result |= (rk == RefKind.SELF_LAMBDA || rk == RefKind.FORWARD_LAMBDA);
1.186 + return result;
1.187 + }
1.188 +
1.189 + void check() {
1.190 + checkCount++;
1.191 + boolean errorExpected = isErrorExpected();
1.192 + if (diagChecker.errorFound != errorExpected) {
1.193 + throw new Error("invalid diagnostics for source:\n" +
1.194 + source.getCharContent(true) +
1.195 + "\nFound error: " + diagChecker.errorFound +
1.196 + "\nExpected error: " + errorExpected);
1.197 + }
1.198 + }
1.199 +
1.200 + static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
1.201 +
1.202 + boolean errorFound;
1.203 +
1.204 + public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
1.205 + if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
1.206 + errorFound = true;
1.207 + }
1.208 + }
1.209 + }
1.210 +}
