268 lines
9.2 KiB
Java
268 lines
9.2 KiB
Java
/*
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* Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8003280
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* @summary Add lambda tests
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* Test SAM conversion of method references in combinations of different contexts,
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* lambda body types(statement/expression), boxing/unboxing etc, to verify
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* SAM conversion being conducted successfully as expected.
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* @modules jdk.compiler
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*/
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import com.sun.source.util.JavacTask;
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import java.net.URI;
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import java.util.Arrays;
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import javax.tools.Diagnostic;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaFileObject;
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import javax.tools.SimpleJavaFileObject;
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import javax.tools.ToolProvider;
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import javax.tools.StandardJavaFileManager;
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public class SamConversionComboTest {
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enum FInterface {
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A("A", "interface A { Integer m(int i); }"),
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B("B", "interface B { int m(Integer i); }"),
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C("C", "interface C { int m(int i) throws Exception; }");
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String interfaceType;
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String interfaceDef;
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FInterface(String interfaceType, String interfaceDef) {
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this.interfaceType = interfaceType;
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this.interfaceDef = interfaceDef;
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}
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}
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enum Context {
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ASSIGNMENT("#FType f = #MR;"),
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METHOD_CALL("void method1(#FType f) { }\n" +
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"void method2() {\n" +
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" method1(#MR);\n" +
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"}"),
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CONSTRUCTOR("X x = new X(#MR);"),
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RETURN_OF_METHOD("#FType method1() {\n" +
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" return #MR;\n" +
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"}"),
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ARRAY_INITIALIZER("#FType[] oarray = {#MR};"),
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LAMBDA_BODY("#FType f = n -> ((#FType)#MR).m(n);"),
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CAST("void test() throws Exception { int n = ((#FType)#MR).m(1); }"),
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CONDITIONAL_EXPRESSION("#FType f = 2 > 1 ? #MR : null;");
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String context;
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Context(String context) {
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this.context = context;
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}
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String getContext(FInterface f, MethodReference mr) {
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return context.replace("#FType", f.interfaceType).replace("#MR", mr.mrValue);
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}
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}
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enum MethodReference {
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METHOD1("X::method1"),
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METHOD2("new X()::method2"),
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METHOD3("X::method3"),
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METHOD4("new X()::method4"),
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METHOD5("new X()::method5"),
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METHOD6("X::method6"),
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METHOD7("X::method7"),
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METHOD8("X::method8");
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String mrValue;
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MethodReference(String mr) {
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mrValue = mr;
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}
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}
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enum MethodDef {
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METHOD1(" static Integer method1(int n) {\n" +
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" return n + 1;\n" +
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" }\n", 0),
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METHOD2(" int method2(Integer n) {\n" +
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" return value == 0 ? n + 2 : n + value;\n" +
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" }\n", 1),
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METHOD3(" static int method3(int n) {\n" +
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" return n + 3;\n" +
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" }\n", 2),
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METHOD4(" Integer method4(Integer n) {\n" +
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" return value == 0 ? n + 4 : n + value;\n" +
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" }\n", 3),
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METHOD5(" Integer method5(Integer n) {\n" +
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" return value == 0 ? new Integer(n + 5) : new Integer(n + value);\n" +
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" }\n", 4),
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METHOD6(" static int method6(Integer n) throws Exception{\n" +
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" throw new Exception();\n" +
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" }\n", 5),
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METHOD7(" static int method7(String s){\n" +
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" return s.length();\n" +
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" }\n", 6),
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METHOD8(" static String method8(Integer n){\n" +
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" return n + \"\";\n" +
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" }\n", 7);
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String methodStr;
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int index;
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MethodDef(String ms, int i) {
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methodStr = ms;
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index = i;
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}
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MethodReference getMethodReference() {
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return MethodReference.values()[index];
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}
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}
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SourceFile samSourceFile = new SourceFile("FInterface.java", "#C") {
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public String toString() {
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String interfaces = "";
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for(FInterface fi : FInterface.values())
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interfaces += fi.interfaceDef + "\n";
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return template.replace("#C", interfaces);
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}
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};
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String clientTemplate = "class Client {\n" +
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" #Context\n" +
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"}\n\n" +
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"class X {\n" +
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" int value = 0;\n\n" +
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" X() {\n" +
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" }\n\n" +
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" X(A a) {\n" +
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" value = a.m(9);\n" +
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" }\n\n" +
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" X(B b) {\n" +
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" value = b.m(9);\n" +
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" }\n\n" +
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" X(C c) {\n" +
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" try {\n" +
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" value = c.m(9);\n" +
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" } catch (Exception e){}\n" +
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" }\n\n" +
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"#MethodDef" +
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"}";
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SourceFile clientSourceFile = new SourceFile("Client.java", clientTemplate) {
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public String toString() {
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return template.replace("#Context", context.getContext(fInterface, methodReference)).replace("#MethodDef", methodDef.methodStr);
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}
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};
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boolean checkSamConversion() {
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if(methodDef == MethodDef.METHOD7 || methodDef == MethodDef.METHOD8)//method signature mismatch
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return false;
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if(context != Context.CONSTRUCTOR && fInterface != FInterface.C && methodDef == MethodDef.METHOD6)
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//method that throws exceptions not thrown by the interface method is a mismatch
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return false;
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if(context == Context.CONSTRUCTOR)
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return false;
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return true;
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}
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void test() throws Exception {
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System.out.println("\n====================================");
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System.out.println(fInterface + ", " + context + ", " + methodReference);
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System.out.println(samSourceFile + "\n" + clientSourceFile);
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DiagnosticChecker dc = new DiagnosticChecker();
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JavacTask ct = (JavacTask)comp.getTask(null, fm, dc, null, null, Arrays.asList(samSourceFile, clientSourceFile));
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ct.analyze();
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if (dc.errorFound == checkSamConversion()) {
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throw new AssertionError(samSourceFile + "\n\n" + clientSourceFile);
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}
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count++;
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}
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abstract class SourceFile extends SimpleJavaFileObject {
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protected String template;
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public SourceFile(String filename, String template) {
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super(URI.create("myfo:/" + filename), JavaFileObject.Kind.SOURCE);
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this.template = template;
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}
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@Override
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public CharSequence getCharContent(boolean ignoreEncodingErrors) {
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return toString();
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}
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public abstract String toString();
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}
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static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
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boolean errorFound = false;
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public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
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if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
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errorFound = true;
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}
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}
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}
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FInterface fInterface;
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Context context;
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MethodDef methodDef;
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MethodReference methodReference;
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static int count = 0;
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static JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
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static StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
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SamConversionComboTest(FInterface f, Context c, MethodDef md) {
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fInterface = f;
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context = c;
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methodDef = md;
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methodReference = md.getMethodReference();
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}
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public static void main(String[] args) throws Exception {
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try {
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for(Context ct : Context.values()) {
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for (FInterface fi : FInterface.values()) {
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for (MethodDef md: MethodDef.values()) {
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new SamConversionComboTest(fi, ct, md).test();
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}
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}
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}
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System.out.println("total tests: " + count);
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} finally {
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fm.close();
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}
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}
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}
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