1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/lambda/MethodReferenceParserTest.java Mon Nov 28 16:05:46 2011 +0000
1.3 @@ -0,0 +1,233 @@
1.4 +/*
1.5 + * Copyright (c) 2011, 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 7115052
1.30 + * @summary Add parser support for method references
1.31 + */
1.32 +
1.33 +import com.sun.source.util.JavacTask;
1.34 +import java.net.URI;
1.35 +import java.util.Arrays;
1.36 +import javax.tools.Diagnostic;
1.37 +import javax.tools.JavaCompiler;
1.38 +import javax.tools.JavaFileObject;
1.39 +import javax.tools.SimpleJavaFileObject;
1.40 +import javax.tools.StandardJavaFileManager;
1.41 +import javax.tools.ToolProvider;
1.42 +
1.43 +public class MethodReferenceParserTest {
1.44 +
1.45 + static int checkCount = 0;
1.46 +
1.47 + enum ReferenceKind {
1.48 + METHOD_REF("#Q##Gm"),
1.49 + CONSTRUCTOR_REF("#Q##Gnew"),
1.50 + ERR_SUPER("#Q##Gsuper"),
1.51 + ERR_METH0("#Q##Gm()"),
1.52 + ERR_METH1("#Q##Gm(X)"),
1.53 + ERR_CONSTR0("#Q##Gnew()"),
1.54 + ERR_CONSTR1("#Q##Gnew(X)");
1.55 +
1.56 + String referenceTemplate;
1.57 +
1.58 + ReferenceKind(String referenceTemplate) {
1.59 + this.referenceTemplate = referenceTemplate;
1.60 + }
1.61 +
1.62 + String getReferenceString(QualifierKind qk, GenericKind gk) {
1.63 + return referenceTemplate
1.64 + .replaceAll("#Q", qk.qualifier)
1.65 + .replaceAll("#G", gk.typeParameters);
1.66 + }
1.67 +
1.68 + boolean erroneous() {
1.69 + switch (this) {
1.70 + case ERR_SUPER:
1.71 + case ERR_METH0:
1.72 + case ERR_METH1:
1.73 + case ERR_CONSTR0:
1.74 + case ERR_CONSTR1:
1.75 + return true;
1.76 + default: return false;
1.77 + }
1.78 + }
1.79 + }
1.80 +
1.81 + enum GenericKind {
1.82 + NONE(""),
1.83 + ONE("<X>"),
1.84 + TWO("<X,Y>");
1.85 +
1.86 + String typeParameters;
1.87 +
1.88 + GenericKind(String typeParameters) {
1.89 + this.typeParameters = typeParameters;
1.90 + }
1.91 + }
1.92 +
1.93 + enum QualifierKind {
1.94 + THIS("this"),
1.95 + SUPER("super"),
1.96 + NEW("new Foo()"),
1.97 + METHOD("m()"),
1.98 + FIELD("a.f"),
1.99 + UBOUND_SIMPLE("A"),
1.100 + UNBOUND_GENERIC1("A<X>"),
1.101 + UNBOUND_GENERIC2("A<X, Y>"),
1.102 + UNBOUND_GENERIC3("A<? extends X, ? super Y>");
1.103 +
1.104 + String qualifier;
1.105 +
1.106 + QualifierKind(String qualifier) {
1.107 + this.qualifier = qualifier;
1.108 + }
1.109 + }
1.110 +
1.111 + enum ExprKind {
1.112 + NONE("#R#S"),
1.113 + SINGLE_PAREN1("(#R#S)"),
1.114 + SINGLE_PAREN2("(#R)#S"),
1.115 + DOUBLE_PAREN1("((#R#S))"),
1.116 + DOUBLE_PAREN2("((#R)#S)"),
1.117 + DOUBLE_PAREN3("((#R))#S");
1.118 +
1.119 + String expressionTemplate;
1.120 +
1.121 + ExprKind(String expressionTemplate) {
1.122 + this.expressionTemplate = expressionTemplate;
1.123 + }
1.124 +
1.125 + String expressionString(ReferenceKind rk, QualifierKind qk, GenericKind gk, SubExprKind sk) {
1.126 + return expressionTemplate
1.127 + .replaceAll("#R", rk.getReferenceString(qk, gk))
1.128 + .replaceAll("#S", sk.subExpression);
1.129 + }
1.130 + }
1.131 +
1.132 + enum SubExprKind {
1.133 + NONE(""),
1.134 + SELECT_FIELD(".f"),
1.135 + SELECT_METHOD(".f()"),
1.136 + SELECT_NEW(".new Foo()"),
1.137 + POSTINC("++"),
1.138 + POSTDEC("--");
1.139 +
1.140 + String subExpression;
1.141 +
1.142 + SubExprKind(String subExpression) {
1.143 + this.subExpression = subExpression;
1.144 + }
1.145 + }
1.146 +
1.147 + public static void main(String... args) throws Exception {
1.148 +
1.149 + //create default shared JavaCompiler - reused across multiple compilations
1.150 + JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
1.151 + StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
1.152 +
1.153 + for (ReferenceKind rk : ReferenceKind.values()) {
1.154 + for (QualifierKind qk : QualifierKind.values()) {
1.155 + for (GenericKind gk : GenericKind.values()) {
1.156 + for (SubExprKind sk : SubExprKind.values()) {
1.157 + for (ExprKind ek : ExprKind.values()) {
1.158 + new MethodReferenceParserTest(rk, qk, gk, sk, ek).run(comp, fm);
1.159 + }
1.160 + }
1.161 + }
1.162 + }
1.163 + }
1.164 + System.out.println("Total check executed: " + checkCount);
1.165 + }
1.166 +
1.167 + ReferenceKind rk;
1.168 + QualifierKind qk;
1.169 + GenericKind gk;
1.170 + SubExprKind sk;
1.171 + ExprKind ek;
1.172 + JavaSource source;
1.173 + DiagnosticChecker diagChecker;
1.174 +
1.175 + MethodReferenceParserTest(ReferenceKind rk, QualifierKind qk, GenericKind gk, SubExprKind sk, ExprKind ek) {
1.176 + this.rk = rk;
1.177 + this.qk = qk;
1.178 + this.gk = gk;
1.179 + this.sk = sk;
1.180 + this.ek = ek;
1.181 + this.source = new JavaSource();
1.182 + this.diagChecker = new DiagnosticChecker();
1.183 + }
1.184 +
1.185 + class JavaSource extends SimpleJavaFileObject {
1.186 +
1.187 + String template = "class Test {\n" +
1.188 + " SAM s = #E;\n" +
1.189 + "}";
1.190 +
1.191 + String source;
1.192 +
1.193 + public JavaSource() {
1.194 + super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
1.195 + source = template.replaceAll("#E", ek.expressionString(rk, qk, gk, sk));
1.196 + }
1.197 +
1.198 + @Override
1.199 + public CharSequence getCharContent(boolean ignoreEncodingErrors) {
1.200 + return source;
1.201 + }
1.202 + }
1.203 +
1.204 + void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
1.205 + JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
1.206 + Arrays.asList("-XDallowMethodReferences"), null, Arrays.asList(source));
1.207 + try {
1.208 + ct.parse();
1.209 + } catch (Throwable ex) {
1.210 + throw new AssertionError("Error thrown when parsing the following source:\n" + source.getCharContent(true));
1.211 + }
1.212 + check();
1.213 + }
1.214 +
1.215 + void check() {
1.216 + checkCount++;
1.217 +
1.218 + if (diagChecker.errorFound != rk.erroneous()) {
1.219 + throw new Error("invalid diagnostics for source:\n" +
1.220 + source.getCharContent(true) +
1.221 + "\nFound error: " + diagChecker.errorFound +
1.222 + "\nExpected error: " + rk.erroneous());
1.223 + }
1.224 + }
1.225 +
1.226 + static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
1.227 +
1.228 + boolean errorFound;
1.229 +
1.230 + public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
1.231 + if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
1.232 + errorFound = true;
1.233 + }
1.234 + }
1.235 + }
1.236 +}
