1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/lambda/LambdaParserTest.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,317 @@
1.4 +/*
1.5 + * Copyright (c) 2011, 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 7115050 8003280 8005852 8006694
1.30 + * @summary Add lambda tests
1.31 + * Add parser support for lambda expressions
1.32 + * temporarily workaround combo tests are causing time out in several platforms
1.33 + * @library ../lib
1.34 + * @build JavacTestingAbstractThreadedTest
1.35 + * @run main/othervm LambdaParserTest
1.36 + */
1.37 +
1.38 +// use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047)
1.39 +// see JDK-8006746
1.40 +
1.41 +import java.net.URI;
1.42 +import java.util.Arrays;
1.43 +import javax.tools.Diagnostic;
1.44 +import javax.tools.JavaFileObject;
1.45 +import javax.tools.SimpleJavaFileObject;
1.46 +import com.sun.source.util.JavacTask;
1.47 +
1.48 +public class LambdaParserTest
1.49 + extends JavacTestingAbstractThreadedTest
1.50 + implements Runnable {
1.51 +
1.52 + enum LambdaKind {
1.53 + NILARY_EXPR("()->x"),
1.54 + NILARY_STMT("()->{ return x; }"),
1.55 + ONEARY_SHORT_EXPR("#PN->x"),
1.56 + ONEARY_SHORT_STMT("#PN->{ return x; }"),
1.57 + ONEARY_EXPR("(#M1 #T1 #PN)->x"),
1.58 + ONEARY_STMT("(#M1 #T1 #PN)->{ return x; }"),
1.59 + TWOARY_EXPR("(#M1 #T1 #PN, #M2 #T2 y)->x"),
1.60 + TWOARY_STMT("(#M1 #T1 #PN, #M2 #T2 y)->{ return x; }");
1.61 +
1.62 + String lambdaTemplate;
1.63 +
1.64 + LambdaKind(String lambdaTemplate) {
1.65 + this.lambdaTemplate = lambdaTemplate;
1.66 + }
1.67 +
1.68 + String getLambdaString(LambdaParameterKind pk1, LambdaParameterKind pk2,
1.69 + ModifierKind mk1, ModifierKind mk2, LambdaParameterName pn) {
1.70 + return lambdaTemplate.replaceAll("#M1", mk1.modifier)
1.71 + .replaceAll("#M2", mk2.modifier)
1.72 + .replaceAll("#T1", pk1.parameterType)
1.73 + .replaceAll("#T2", pk2.parameterType)
1.74 + .replaceAll("#PN", pn.nameStr);
1.75 + }
1.76 +
1.77 + int arity() {
1.78 + switch (this) {
1.79 + case NILARY_EXPR:
1.80 + case NILARY_STMT: return 0;
1.81 + case ONEARY_SHORT_EXPR:
1.82 + case ONEARY_SHORT_STMT:
1.83 + case ONEARY_EXPR:
1.84 + case ONEARY_STMT: return 1;
1.85 + case TWOARY_EXPR:
1.86 + case TWOARY_STMT: return 2;
1.87 + default: throw new AssertionError("Invalid lambda kind " + this);
1.88 + }
1.89 + }
1.90 +
1.91 + boolean isShort() {
1.92 + return this == ONEARY_SHORT_EXPR ||
1.93 + this == ONEARY_SHORT_STMT;
1.94 + }
1.95 + }
1.96 +
1.97 + enum LambdaParameterName {
1.98 + IDENT("x"),
1.99 + UNDERSCORE("_");
1.100 +
1.101 + String nameStr;
1.102 +
1.103 + LambdaParameterName(String nameStr) {
1.104 + this.nameStr = nameStr;
1.105 + }
1.106 + }
1.107 +
1.108 + enum LambdaParameterKind {
1.109 + IMPLICIT(""),
1.110 + EXPLIICT_SIMPLE("A"),
1.111 + EXPLIICT_SIMPLE_ARR1("A[]"),
1.112 + EXPLIICT_SIMPLE_ARR2("A[][]"),
1.113 + EXPLICIT_VARARGS("A..."),
1.114 + EXPLICIT_GENERIC1("A<X>"),
1.115 + EXPLICIT_GENERIC2("A<? extends X, ? super Y>"),
1.116 + EXPLICIT_GENERIC2_VARARGS("A<? extends X, ? super Y>..."),
1.117 + EXPLICIT_GENERIC2_ARR1("A<? extends X, ? super Y>[]"),
1.118 + EXPLICIT_GENERIC2_ARR2("A<? extends X, ? super Y>[][]");
1.119 +
1.120 + String parameterType;
1.121 +
1.122 + LambdaParameterKind(String parameterType) {
1.123 + this.parameterType = parameterType;
1.124 + }
1.125 +
1.126 + boolean explicit() {
1.127 + return this != IMPLICIT;
1.128 + }
1.129 +
1.130 + boolean isVarargs() {
1.131 + return this == EXPLICIT_VARARGS ||
1.132 + this == EXPLICIT_GENERIC2_VARARGS;
1.133 + }
1.134 + }
1.135 +
1.136 + enum ModifierKind {
1.137 + NONE(""),
1.138 + FINAL("final"),
1.139 + PUBLIC("public");
1.140 +
1.141 + String modifier;
1.142 +
1.143 + ModifierKind(String modifier) {
1.144 + this.modifier = modifier;
1.145 + }
1.146 +
1.147 + boolean compatibleWith(LambdaParameterKind pk) {
1.148 + switch (this) {
1.149 + case PUBLIC: return false;
1.150 + case FINAL: return pk != LambdaParameterKind.IMPLICIT;
1.151 + case NONE: return true;
1.152 + default: throw new AssertionError("Invalid modifier kind " + this);
1.153 + }
1.154 + }
1.155 + }
1.156 +
1.157 + enum ExprKind {
1.158 + NONE("#L#S"),
1.159 + SINGLE_PAREN1("(#L#S)"),
1.160 + SINGLE_PAREN2("(#L)#S"),
1.161 + DOUBLE_PAREN1("((#L#S))"),
1.162 + DOUBLE_PAREN2("((#L)#S)"),
1.163 + DOUBLE_PAREN3("((#L))#S");
1.164 +
1.165 + String expressionTemplate;
1.166 +
1.167 + ExprKind(String expressionTemplate) {
1.168 + this.expressionTemplate = expressionTemplate;
1.169 + }
1.170 +
1.171 + String expressionString(LambdaParameterKind pk1, LambdaParameterKind pk2,
1.172 + ModifierKind mk1, ModifierKind mk2, LambdaKind lk, LambdaParameterName pn, SubExprKind sk) {
1.173 + return expressionTemplate.replaceAll("#L", lk.getLambdaString(pk1, pk2, mk1, mk2, pn))
1.174 + .replaceAll("#S", sk.subExpression);
1.175 + }
1.176 + }
1.177 +
1.178 + enum SubExprKind {
1.179 + NONE(""),
1.180 + SELECT_FIELD(".f"),
1.181 + SELECT_METHOD(".f()"),
1.182 + SELECT_NEW(".new Foo()"),
1.183 + POSTINC("++"),
1.184 + POSTDEC("--");
1.185 +
1.186 + String subExpression;
1.187 +
1.188 + SubExprKind(String subExpression) {
1.189 + this.subExpression = subExpression;
1.190 + }
1.191 + }
1.192 +
1.193 + public static void main(String... args) throws Exception {
1.194 + for (LambdaKind lk : LambdaKind.values()) {
1.195 + for (LambdaParameterName pn : LambdaParameterName.values()) {
1.196 + for (LambdaParameterKind pk1 : LambdaParameterKind.values()) {
1.197 + if (lk.arity() < 1 && pk1 != LambdaParameterKind.IMPLICIT)
1.198 + continue;
1.199 + for (LambdaParameterKind pk2 : LambdaParameterKind.values()) {
1.200 + if (lk.arity() < 2 && pk2 != LambdaParameterKind.IMPLICIT)
1.201 + continue;
1.202 + for (ModifierKind mk1 : ModifierKind.values()) {
1.203 + if (mk1 != ModifierKind.NONE && lk.isShort())
1.204 + continue;
1.205 + if (lk.arity() < 1 && mk1 != ModifierKind.NONE)
1.206 + continue;
1.207 + for (ModifierKind mk2 : ModifierKind.values()) {
1.208 + if (lk.arity() < 2 && mk2 != ModifierKind.NONE)
1.209 + continue;
1.210 + for (SubExprKind sk : SubExprKind.values()) {
1.211 + for (ExprKind ek : ExprKind.values()) {
1.212 + pool.execute(
1.213 + new LambdaParserTest(pk1, pk2, mk1,
1.214 + mk2, lk, sk, ek, pn));
1.215 + }
1.216 + }
1.217 + }
1.218 + }
1.219 + }
1.220 + }
1.221 + }
1.222 + }
1.223 +
1.224 + checkAfterExec();
1.225 + }
1.226 +
1.227 + LambdaParameterKind pk1;
1.228 + LambdaParameterKind pk2;
1.229 + ModifierKind mk1;
1.230 + ModifierKind mk2;
1.231 + LambdaKind lk;
1.232 + LambdaParameterName pn;
1.233 + SubExprKind sk;
1.234 + ExprKind ek;
1.235 + JavaSource source;
1.236 + DiagnosticChecker diagChecker;
1.237 +
1.238 + LambdaParserTest(LambdaParameterKind pk1, LambdaParameterKind pk2,
1.239 + ModifierKind mk1, ModifierKind mk2, LambdaKind lk,
1.240 + SubExprKind sk, ExprKind ek, LambdaParameterName pn) {
1.241 + this.pk1 = pk1;
1.242 + this.pk2 = pk2;
1.243 + this.mk1 = mk1;
1.244 + this.mk2 = mk2;
1.245 + this.lk = lk;
1.246 + this.pn = pn;
1.247 + this.sk = sk;
1.248 + this.ek = ek;
1.249 + this.source = new JavaSource();
1.250 + this.diagChecker = new DiagnosticChecker();
1.251 + }
1.252 +
1.253 + class JavaSource extends SimpleJavaFileObject {
1.254 +
1.255 + String template = "class Test {\n" +
1.256 + " SAM s = #E;\n" +
1.257 + "}";
1.258 +
1.259 + String source;
1.260 +
1.261 + public JavaSource() {
1.262 + super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
1.263 + source = template.replaceAll("#E",
1.264 + ek.expressionString(pk1, pk2, mk1, mk2, lk, pn, sk));
1.265 + }
1.266 +
1.267 + @Override
1.268 + public CharSequence getCharContent(boolean ignoreEncodingErrors) {
1.269 + return source;
1.270 + }
1.271 + }
1.272 +
1.273 + public void run() {
1.274 + JavacTask ct = (JavacTask)comp.getTask(null, fm.get(), diagChecker,
1.275 + null, null, Arrays.asList(source));
1.276 + try {
1.277 + ct.parse();
1.278 + } catch (Throwable ex) {
1.279 + processException(ex);
1.280 + return;
1.281 + }
1.282 + check();
1.283 + }
1.284 +
1.285 + void check() {
1.286 + checkCount.incrementAndGet();
1.287 +
1.288 + boolean errorExpected = (lk.arity() > 0 && !mk1.compatibleWith(pk1)) ||
1.289 + (lk.arity() > 1 && !mk2.compatibleWith(pk2));
1.290 +
1.291 + if (lk.arity() == 2 &&
1.292 + (pk1.explicit() != pk2.explicit() ||
1.293 + pk1.isVarargs())) {
1.294 + errorExpected = true;
1.295 + }
1.296 +
1.297 + errorExpected |= pn == LambdaParameterName.UNDERSCORE &&
1.298 + lk.arity() > 0;
1.299 +
1.300 + if (errorExpected != diagChecker.errorFound) {
1.301 + throw new Error("invalid diagnostics for source:\n" +
1.302 + source.getCharContent(true) +
1.303 + "\nFound error: " + diagChecker.errorFound +
1.304 + "\nExpected error: " + errorExpected);
1.305 + }
1.306 + }
1.307 +
1.308 + static class DiagnosticChecker
1.309 + implements javax.tools.DiagnosticListener<JavaFileObject> {
1.310 +
1.311 + boolean errorFound;
1.312 +
1.313 + public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
1.314 + if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
1.315 + errorFound = true;
1.316 + }
1.317 + }
1.318 + }
1.319 +
1.320 +}
