| /* |
| * Copyright (c) 2012, 2013, 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 |
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| */ |
| |
| /** |
| * @test |
| * @bug 8003280 |
| * @summary Add lambda tests |
| * Test SAM conversion of method references in combinations of different contexts, |
| * lambda body types(statement/expression), boxing/unboxing etc, to verify |
| * SAM conversion being conducted successfully as expected. |
| */ |
| |
| 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.ToolProvider; |
| import javax.tools.StandardJavaFileManager; |
| |
| public class SamConversionComboTest { |
| |
| enum FInterface { |
| A("A", "interface A { Integer m(int i); }"), |
| B("B", "interface B { int m(Integer i); }"), |
| C("C", "interface C { int m(int i) throws Exception; }"); |
| |
| String interfaceType; |
| String interfaceDef; |
| |
| FInterface(String interfaceType, String interfaceDef) { |
| this.interfaceType = interfaceType; |
| this.interfaceDef = interfaceDef; |
| } |
| } |
| |
| enum Context { |
| ASSIGNMENT("#FType f = #MR;"), |
| METHOD_CALL("void method1(#FType f) { }\n" + |
| "void method2() {\n" + |
| " method1(#MR);\n" + |
| "}"), |
| CONSTRUCTOR("X x = new X(#MR);"), |
| RETURN_OF_METHOD("#FType method1() {\n" + |
| " return #MR;\n" + |
| "}"), |
| ARRAY_INITIALIZER("#FType[] oarray = {#MR};"), |
| LAMBDA_BODY("#FType f = n -> ((#FType)#MR).m(n);"), |
| CAST("void test() throws Exception { int n = ((#FType)#MR).m(1); }"), |
| CONDITIONAL_EXPRESSION("#FType f = 2 > 1 ? #MR : null;"); |
| |
| String context; |
| |
| Context(String context) { |
| this.context = context; |
| } |
| |
| String getContext(FInterface f, MethodReference mr) { |
| return context.replace("#FType", f.interfaceType).replace("#MR", mr.mrValue); |
| } |
| } |
| |
| enum MethodReference { |
| METHOD1("X::method1"), |
| METHOD2("new X()::method2"), |
| METHOD3("X::method3"), |
| METHOD4("new X()::method4"), |
| METHOD5("new X()::method5"), |
| METHOD6("X::method6"), |
| METHOD7("X::method7"), |
| METHOD8("X::method8"); |
| |
| String mrValue; |
| |
| MethodReference(String mr) { |
| mrValue = mr; |
| } |
| } |
| |
| enum MethodDef { |
| METHOD1(" static Integer method1(int n) {\n" + |
| " return n + 1;\n" + |
| " }\n", 0), |
| METHOD2(" int method2(Integer n) {\n" + |
| " return value == 0 ? n + 2 : n + value;\n" + |
| " }\n", 1), |
| METHOD3(" static int method3(int n) {\n" + |
| " return n + 3;\n" + |
| " }\n", 2), |
| METHOD4(" Integer method4(Integer n) {\n" + |
| " return value == 0 ? n + 4 : n + value;\n" + |
| " }\n", 3), |
| METHOD5(" Integer method5(Integer n) {\n" + |
| " return value == 0 ? new Integer(n + 5) : new Integer(n + value);\n" + |
| " }\n", 4), |
| METHOD6(" static int method6(Integer n) throws Exception{\n" + |
| " throw new Exception();\n" + |
| " }\n", 5), |
| METHOD7(" static int method7(String s){\n" + |
| " return s.length();\n" + |
| " }\n", 6), |
| METHOD8(" static String method8(Integer n){\n" + |
| " return n + \"\";\n" + |
| " }\n", 7); |
| |
| String methodStr; |
| int index; |
| |
| MethodDef(String ms, int i) { |
| methodStr = ms; |
| index = i; |
| } |
| |
| MethodReference getMethodReference() { |
| return MethodReference.values()[index]; |
| } |
| } |
| |
| SourceFile samSourceFile = new SourceFile("FInterface.java", "#C") { |
| public String toString() { |
| String interfaces = ""; |
| for(FInterface fi : FInterface.values()) |
| interfaces += fi.interfaceDef + "\n"; |
| return template.replace("#C", interfaces); |
| } |
| }; |
| |
| String clientTemplate = "class Client {\n" + |
| " #Context\n" + |
| "}\n\n" + |
| |
| "class X {\n" + |
| " int value = 0;\n\n" + |
| |
| " X() {\n" + |
| " }\n\n" + |
| |
| " X(A a) {\n" + |
| " value = a.m(9);\n" + |
| " }\n\n" + |
| |
| " X(B b) {\n" + |
| " value = b.m(9);\n" + |
| " }\n\n" + |
| |
| " X(C c) {\n" + |
| " try {\n" + |
| " value = c.m(9);\n" + |
| " } catch (Exception e){}\n" + |
| " }\n\n" + |
| |
| "#MethodDef" + |
| "}"; |
| |
| SourceFile clientSourceFile = new SourceFile("Client.java", clientTemplate) { |
| public String toString() { |
| return template.replace("#Context", context.getContext(fInterface, methodReference)).replace("#MethodDef", methodDef.methodStr); |
| } |
| }; |
| |
| boolean checkSamConversion() { |
| if(methodDef == MethodDef.METHOD7 || methodDef == MethodDef.METHOD8)//method signature mismatch |
| return false; |
| if(context != Context.CONSTRUCTOR && fInterface != FInterface.C && methodDef == MethodDef.METHOD6) |
| //method that throws exceptions not thrown by the interface method is a mismatch |
| return false; |
| if(context == Context.CONSTRUCTOR) |
| return false; |
| return true; |
| } |
| |
| void test() throws Exception { |
| System.out.println("\n===================================="); |
| System.out.println(fInterface + ", " + context + ", " + methodReference); |
| System.out.println(samSourceFile + "\n" + clientSourceFile); |
| |
| DiagnosticChecker dc = new DiagnosticChecker(); |
| JavacTask ct = (JavacTask)comp.getTask(null, fm, dc, null, null, Arrays.asList(samSourceFile, clientSourceFile)); |
| ct.analyze(); |
| if (dc.errorFound == checkSamConversion()) { |
| throw new AssertionError(samSourceFile + "\n\n" + clientSourceFile); |
| } |
| count++; |
| } |
| |
| abstract class SourceFile extends SimpleJavaFileObject { |
| |
| protected String template; |
| |
| public SourceFile(String filename, String template) { |
| super(URI.create("myfo:/" + filename), JavaFileObject.Kind.SOURCE); |
| this.template = template; |
| } |
| |
| @Override |
| public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
| return toString(); |
| } |
| |
| public abstract String toString(); |
| } |
| |
| static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> { |
| |
| boolean errorFound = false; |
| |
| public void report(Diagnostic<? extends JavaFileObject> diagnostic) { |
| if (diagnostic.getKind() == Diagnostic.Kind.ERROR) { |
| errorFound = true; |
| } |
| } |
| } |
| |
| FInterface fInterface; |
| Context context; |
| MethodDef methodDef; |
| MethodReference methodReference; |
| static int count = 0; |
| |
| static JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); |
| static StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null); |
| |
| SamConversionComboTest(FInterface f, Context c, MethodDef md) { |
| fInterface = f; |
| context = c; |
| methodDef = md; |
| methodReference = md.getMethodReference(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| for(Context ct : Context.values()) { |
| for (FInterface fi : FInterface.values()) { |
| for (MethodDef md: MethodDef.values()) { |
| new SamConversionComboTest(fi, ct, md).test(); |
| } |
| } |
| } |
| System.out.println("total tests: " + count); |
| } |
| } |
