jdk8-mips64-public/langtools: comparison test/tools/javac/lambda/LambdaParserTest.java

-:ec59a2ce9114
+:9448fe783fd2
+/*
+* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*/
+/*
+* @test
+* @bug 7115050
+* @summary Add parser support for lambda expressions
+*/
+import com.sun.source.util.JavacTask;
+import java.net.URI;
+import java.util.Arrays;
+import javax.tools.Diagnostic;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.ToolProvider;
+public class LambdaParserTest {
+static int checkCount = 0;
+enum LambdaKind {
+NILARY_EXPR("()->x"),
+NILARY_STMT("()->{ return x; }"),
+ONEARY_SHORT_EXPR("x->x"),
+ONEARY_SHORT_STMT("x->{ return x; }"),
+ONEARY_EXPR("(#M1 #T1 x)->x"),
+ONEARY_STMT("(#M1 #T1 x)->{ return x; }"),
+TWOARY_EXPR("(#M1 #T1 x, #M2 #T2 y)->x"),
+TWOARY_STMT("(#M1 #T1 x, #M2 #T2 y)->{ return x; }");
+String lambdaTemplate;
+LambdaKind(String lambdaTemplate) {
+this.lambdaTemplate = lambdaTemplate;
+}
+String getLambdaString(LambdaParameterKind pk1, LambdaParameterKind pk2,
+ModifierKind mk1, ModifierKind mk2) {
+return lambdaTemplate.replaceAll("#M1", mk1.modifier)
+.replaceAll("#M2", mk2.modifier)
+.replaceAll("#T1", pk1.parameterType)
+.replaceAll("#T2", pk2.parameterType);
+}
+int arity() {
+switch (this) {
+case NILARY_EXPR:
+case NILARY_STMT: return 0;
+case ONEARY_SHORT_EXPR:
+case ONEARY_SHORT_STMT:
+case ONEARY_EXPR:
+case ONEARY_STMT: return 1;
+case TWOARY_EXPR:
+case TWOARY_STMT: return 2;
+default: throw new AssertionError("Invalid lambda kind " + this);
+}
+}
+boolean isShort() {
+return this == ONEARY_SHORT_EXPR ||
+this == ONEARY_SHORT_STMT;
+}
+}
+enum LambdaParameterKind {
+IMPLICIT(""),
+EXPLIICT_SIMPLE("A"),
+EXPLICIT_VARARGS("A..."),
+EXPLICIT_GENERIC1("A<X>"),
+EXPLICIT_GENERIC3("A<? extends X, ? super Y>");
+String parameterType;
+LambdaParameterKind(String parameterType) {
+this.parameterType = parameterType;
+}
+boolean explicit() {
+return this != IMPLICIT;
+}
+}
+enum ModifierKind {
+NONE(""),
+FINAL("final"),
+PUBLIC("public");
+String modifier;
+ModifierKind(String modifier) {
+this.modifier = modifier;
+}
+boolean compatibleWith(LambdaParameterKind pk) {
+switch (this) {
+case PUBLIC: return false;
+case FINAL: return pk != LambdaParameterKind.IMPLICIT;
+case NONE: return true;
+default: throw new AssertionError("Invalid modifier kind " + this);
+}
+}
+}
+enum ExprKind {
+NONE("#L#S"),
+SINGLE_PAREN1("(#L#S)"),
+SINGLE_PAREN2("(#L)#S"),
+DOUBLE_PAREN1("((#L#S))"),
+DOUBLE_PAREN2("((#L)#S)"),
+DOUBLE_PAREN3("((#L))#S");
+String expressionTemplate;
+ExprKind(String expressionTemplate) {
+this.expressionTemplate = expressionTemplate;
+}
+String expressionString(LambdaParameterKind pk1, LambdaParameterKind pk2,
+ModifierKind mk1, ModifierKind mk2, LambdaKind lk, SubExprKind sk) {
+return expressionTemplate.replaceAll("#L", lk.getLambdaString(pk1, pk2, mk1, mk2))
+.replaceAll("#S", sk.subExpression);
+}
+}
+enum SubExprKind {
+NONE(""),
+SELECT_FIELD(".f"),
+SELECT_METHOD(".f()"),
+SELECT_NEW(".new Foo()"),
+POSTINC("++"),
+POSTDEC("--");
+String subExpression;
+SubExprKind(String subExpression) {
+this.subExpression = subExpression;
+}
+}
+public static void main(String... args) throws Exception {
+//create default shared JavaCompiler - reused across multiple compilations
+JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
+StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
+for (LambdaKind lk : LambdaKind.values()) {
+for (LambdaParameterKind pk1 : LambdaParameterKind.values()) {
+if (lk.arity() < 1 && pk1 != LambdaParameterKind.IMPLICIT) continue;
+for (LambdaParameterKind pk2 : LambdaParameterKind.values()) {
+if (lk.arity() < 2 && pk2 != LambdaParameterKind.IMPLICIT) continue;
+for (ModifierKind mk1 : ModifierKind.values()) {
+if (mk1 != ModifierKind.NONE && lk.isShort()) continue;
+if (lk.arity() < 1 && mk1 != ModifierKind.NONE) continue;
+for (ModifierKind mk2 : ModifierKind.values()) {
+if (lk.arity() < 2 && mk2 != ModifierKind.NONE) continue;
+for (SubExprKind sk : SubExprKind.values()) {
+for (ExprKind ek : ExprKind.values()) {
+new LambdaParserTest(pk1, pk2, mk1, mk2, lk, sk, ek)
+.run(comp, fm);
+}
+}
+}
+}
+}
+}
+}
+System.out.println("Total check executed: " + checkCount);
+}
+LambdaParameterKind pk1;
+LambdaParameterKind pk2;
+ModifierKind mk1;
+ModifierKind mk2;
+LambdaKind lk;
+SubExprKind sk;
+ExprKind ek;
+JavaSource source;
+DiagnosticChecker diagChecker;
+LambdaParserTest(LambdaParameterKind pk1, LambdaParameterKind pk2, ModifierKind mk1,
+ModifierKind mk2, LambdaKind lk, SubExprKind sk, ExprKind ek) {
+this.pk1 = pk1;
+this.pk2 = pk2;
+this.mk1 = mk1;
+this.mk2 = mk2;
+this.lk = lk;
+this.sk = sk;
+this.ek = ek;
+this.source = new JavaSource();
+this.diagChecker = new DiagnosticChecker();
+}
+class JavaSource extends SimpleJavaFileObject {
+String template = "class Test {\n" +
+"   SAM s = #E;\n" +
+"}";
+String source;
+public JavaSource() {
+super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
+source = template.replaceAll("#E", ek.expressionString(pk1, pk2, mk1, mk2, lk, sk));
+}
+@Override
+public CharSequence getCharContent(boolean ignoreEncodingErrors) {
+return source;
+}
+}
+void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
+JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
+Arrays.asList("-XDallowLambda"), null, Arrays.asList(source));
+try {
+ct.parse();
+} catch (Throwable ex) {
+throw new AssertionError("Error thron when parsing the following source:\n" + source.getCharContent(true));
+}
+check();
+}
+void check() {
+checkCount++;
+boolean errorExpected = (lk.arity() > 0 && !mk1.compatibleWith(pk1)) ||
+(lk.arity() > 1 && !mk2.compatibleWith(pk2));
+if (lk.arity() == 2 &&
+(pk1.explicit() != pk2.explicit() ||
+pk1 == LambdaParameterKind.EXPLICIT_VARARGS)) {
+errorExpected = true;
+}
+if (errorExpected != diagChecker.errorFound) {
+throw new Error("invalid diagnostics for source:\n" +
+source.getCharContent(true) +
+"\nFound error: " + diagChecker.errorFound +
+"\nExpected error: " + errorExpected);
+}
+}
+static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
+boolean errorFound;
+public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
+if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
+errorFound = true;
+}
+}
+}
+}

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

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

test/tools/javac/lambda/LambdaParserTest.java