Mercurial > jdk8-mips64-public > langtools / file comparison

comparison: test/tools/javac/lambda/LambdaParserTest.java

test/tools/javac/lambda/LambdaParserTest.java

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1 /*
2 * Copyright (c) 2011, 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 7115050 8003280 8005852 8006694
27 * @summary Add lambda tests
28 * Add parser support for lambda expressions
29 * temporarily workaround combo tests are causing time out in several platforms
30 * @library ../lib
31 * @build JavacTestingAbstractThreadedTest
32 * @run main/othervm LambdaParserTest
33 */
34
35 // use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047)
36 // see JDK-8006746
37
38 import java.net.URI;
39 import java.util.Arrays;
40 import javax.tools.Diagnostic;
41 import javax.tools.JavaFileObject;
42 import javax.tools.SimpleJavaFileObject;
43 import com.sun.source.util.JavacTask;
44
45 public class LambdaParserTest
46 extends JavacTestingAbstractThreadedTest
47 implements Runnable {
48
49 enum LambdaKind {
50 NILARY_EXPR("()->x"),
51 NILARY_STMT("()->{ return x; }"),
52 ONEARY_SHORT_EXPR("#PN->x"),
53 ONEARY_SHORT_STMT("#PN->{ return x; }"),
54 ONEARY_EXPR("(#M1 #T1 #PN)->x"),
55 ONEARY_STMT("(#M1 #T1 #PN)->{ return x; }"),
56 TWOARY_EXPR("(#M1 #T1 #PN, #M2 #T2 y)->x"),
57 TWOARY_STMT("(#M1 #T1 #PN, #M2 #T2 y)->{ return x; }");
58
59 String lambdaTemplate;
60
61 LambdaKind(String lambdaTemplate) {
62 this.lambdaTemplate = lambdaTemplate;
63 }
64
65 String getLambdaString(LambdaParameterKind pk1, LambdaParameterKind pk2,
66 ModifierKind mk1, ModifierKind mk2, LambdaParameterName pn) {
67 return lambdaTemplate.replaceAll("#M1", mk1.modifier)
68 .replaceAll("#M2", mk2.modifier)
69 .replaceAll("#T1", pk1.parameterType)
70 .replaceAll("#T2", pk2.parameterType)
71 .replaceAll("#PN", pn.nameStr);
72 }
73
74 int arity() {
75 switch (this) {
76 case NILARY_EXPR:
77 case NILARY_STMT: return 0;
78 case ONEARY_SHORT_EXPR:
79 case ONEARY_SHORT_STMT:
80 case ONEARY_EXPR:
81 case ONEARY_STMT: return 1;
82 case TWOARY_EXPR:
83 case TWOARY_STMT: return 2;
84 default: throw new AssertionError("Invalid lambda kind " + this);
85 }
86 }
87
88 boolean isShort() {
89 return this == ONEARY_SHORT_EXPR ||
90 this == ONEARY_SHORT_STMT;
91 }
92 }
93
94 enum LambdaParameterName {
95 IDENT("x"),
96 UNDERSCORE("_");
97
98 String nameStr;
99
100 LambdaParameterName(String nameStr) {
101 this.nameStr = nameStr;
102 }
103 }
104
105 enum LambdaParameterKind {
106 IMPLICIT(""),
107 EXPLIICT_SIMPLE("A"),
108 EXPLIICT_SIMPLE_ARR1("A[]"),
109 EXPLIICT_SIMPLE_ARR2("A[][]"),
110 EXPLICIT_VARARGS("A..."),
111 EXPLICIT_GENERIC1("A<X>"),
112 EXPLICIT_GENERIC2("A<? extends X, ? super Y>"),
113 EXPLICIT_GENERIC2_VARARGS("A<? extends X, ? super Y>..."),
114 EXPLICIT_GENERIC2_ARR1("A<? extends X, ? super Y>[]"),
115 EXPLICIT_GENERIC2_ARR2("A<? extends X, ? super Y>[][]");
116
117 String parameterType;
118
119 LambdaParameterKind(String parameterType) {
120 this.parameterType = parameterType;
121 }
122
123 boolean explicit() {
124 return this != IMPLICIT;
125 }
126
127 boolean isVarargs() {
128 return this == EXPLICIT_VARARGS ||
129 this == EXPLICIT_GENERIC2_VARARGS;
130 }
131 }
132
133 enum ModifierKind {
134 NONE(""),
135 FINAL("final"),
136 PUBLIC("public");
137
138 String modifier;
139
140 ModifierKind(String modifier) {
141 this.modifier = modifier;
142 }
143
144 boolean compatibleWith(LambdaParameterKind pk) {
145 switch (this) {
146 case PUBLIC: return false;
147 case FINAL: return pk != LambdaParameterKind.IMPLICIT;
148 case NONE: return true;
149 default: throw new AssertionError("Invalid modifier kind " + this);
150 }
151 }
152 }
153
154 enum ExprKind {
155 NONE("#L#S"),
156 SINGLE_PAREN1("(#L#S)"),
157 SINGLE_PAREN2("(#L)#S"),
158 DOUBLE_PAREN1("((#L#S))"),
159 DOUBLE_PAREN2("((#L)#S)"),
160 DOUBLE_PAREN3("((#L))#S");
161
162 String expressionTemplate;
163
164 ExprKind(String expressionTemplate) {
165 this.expressionTemplate = expressionTemplate;
166 }
167
168 String expressionString(LambdaParameterKind pk1, LambdaParameterKind pk2,
169 ModifierKind mk1, ModifierKind mk2, LambdaKind lk, LambdaParameterName pn, SubExprKind sk) {
170 return expressionTemplate.replaceAll("#L", lk.getLambdaString(pk1, pk2, mk1, mk2, pn))
171 .replaceAll("#S", sk.subExpression);
172 }
173 }
174
175 enum SubExprKind {
176 NONE(""),
177 SELECT_FIELD(".f"),
178 SELECT_METHOD(".f()"),
179 SELECT_NEW(".new Foo()"),
180 POSTINC("++"),
181 POSTDEC("--");
182
183 String subExpression;
184
185 SubExprKind(String subExpression) {
186 this.subExpression = subExpression;
187 }
188 }
189
190 public static void main(String... args) throws Exception {
191 for (LambdaKind lk : LambdaKind.values()) {
192 for (LambdaParameterName pn : LambdaParameterName.values()) {
193 for (LambdaParameterKind pk1 : LambdaParameterKind.values()) {
194 if (lk.arity() < 1 && pk1 != LambdaParameterKind.IMPLICIT)
195 continue;
196 for (LambdaParameterKind pk2 : LambdaParameterKind.values()) {
197 if (lk.arity() < 2 && pk2 != LambdaParameterKind.IMPLICIT)
198 continue;
199 for (ModifierKind mk1 : ModifierKind.values()) {
200 if (mk1 != ModifierKind.NONE && lk.isShort())
201 continue;
202 if (lk.arity() < 1 && mk1 != ModifierKind.NONE)
203 continue;
204 for (ModifierKind mk2 : ModifierKind.values()) {
205 if (lk.arity() < 2 && mk2 != ModifierKind.NONE)
206 continue;
207 for (SubExprKind sk : SubExprKind.values()) {
208 for (ExprKind ek : ExprKind.values()) {
209 pool.execute(
210 new LambdaParserTest(pk1, pk2, mk1,
211 mk2, lk, sk, ek, pn));
212 }
213 }
214 }
215 }
216 }
217 }
218 }
219 }
220
221 checkAfterExec();
222 }
223
224 LambdaParameterKind pk1;
225 LambdaParameterKind pk2;
226 ModifierKind mk1;
227 ModifierKind mk2;
228 LambdaKind lk;
229 LambdaParameterName pn;
230 SubExprKind sk;
231 ExprKind ek;
232 JavaSource source;
233 DiagnosticChecker diagChecker;
234
235 LambdaParserTest(LambdaParameterKind pk1, LambdaParameterKind pk2,
236 ModifierKind mk1, ModifierKind mk2, LambdaKind lk,
237 SubExprKind sk, ExprKind ek, LambdaParameterName pn) {
238 this.pk1 = pk1;
239 this.pk2 = pk2;
240 this.mk1 = mk1;
241 this.mk2 = mk2;
242 this.lk = lk;
243 this.pn = pn;
244 this.sk = sk;
245 this.ek = ek;
246 this.source = new JavaSource();
247 this.diagChecker = new DiagnosticChecker();
248 }
249
250 class JavaSource extends SimpleJavaFileObject {
251
252 String template = "class Test {\n" +
253 " SAM s = #E;\n" +
254 "}";
255
256 String source;
257
258 public JavaSource() {
259 super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
260 source = template.replaceAll("#E",
261 ek.expressionString(pk1, pk2, mk1, mk2, lk, pn, sk));
262 }
263
264 @Override
265 public CharSequence getCharContent(boolean ignoreEncodingErrors) {
266 return source;
267 }
268 }
269
270 public void run() {
271 JavacTask ct = (JavacTask)comp.getTask(null, fm.get(), diagChecker,
272 null, null, Arrays.asList(source));
273 try {
274 ct.parse();
275 } catch (Throwable ex) {
276 processException(ex);
277 return;
278 }
279 check();
280 }
281
282 void check() {
283 checkCount.incrementAndGet();
284
285 boolean errorExpected = (lk.arity() > 0 && !mk1.compatibleWith(pk1)) ||
286 (lk.arity() > 1 && !mk2.compatibleWith(pk2));
287
288 if (lk.arity() == 2 &&
289 (pk1.explicit() != pk2.explicit() ||
290 pk1.isVarargs())) {
291 errorExpected = true;
292 }
293
294 errorExpected |= pn == LambdaParameterName.UNDERSCORE &&
295 lk.arity() > 0;
296
297 if (errorExpected != diagChecker.errorFound) {
298 throw new Error("invalid diagnostics for source:\n" +
299 source.getCharContent(true) +
300 "\nFound error: " + diagChecker.errorFound +
301 "\nExpected error: " + errorExpected);
302 }
303 }
304
305 static class DiagnosticChecker
306 implements javax.tools.DiagnosticListener<JavaFileObject> {
307
308 boolean errorFound;
309
310 public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
311 if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
312 errorFound = true;
313 }
314 }
315 }
316
317 }

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