| /* |
| * Copyright (c) 2011, 2015, 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 7029150 7025809 |
| * @summary Test support for union types |
| * @library /tools/javac/lib |
| * @modules jdk.compiler |
| */ |
| |
| import java.net.URI; |
| import java.util.*; |
| import javax.annotation.processing.*; |
| import javax.lang.model.element.*; |
| import javax.lang.model.type.*; |
| import javax.lang.model.util.*; |
| import javax.tools.*; |
| |
| import com.sun.source.tree.*; |
| import com.sun.source.util.*; |
| |
| public class TestUnionType extends JavacTestingAbstractProcessor { |
| enum TestKind { |
| SingleType("E1", "E1", |
| "VariableTree: E1 e", |
| "VariableTree: elem EXCEPTION_PARAMETER e", |
| "VariableTree: elem.type DECLARED", |
| "VariableTree: elem.type.elem CLASS E1", |
| "VariableTree: type DECLARED", |
| "VariableTree: type.elem CLASS E1", |
| "VariableTree: type.elem.type DECLARED"), |
| |
| ValidTypes("E1, E2", "E1 | E2", |
| "VariableTree: E1 | E2 e", |
| "VariableTree: elem EXCEPTION_PARAMETER e", |
| "VariableTree: elem.type UNION Test.E1,Test.E2", |
| "VariableTree: elem.type.elem null", |
| "VariableTree: type UNION Test.E1,Test.E2", |
| "VariableTree: type.elem null"), |
| |
| InvalidTypes("E1, E2", "E1 | EMissing", |
| "VariableTree: E1 | EMissing e", |
| "VariableTree: elem EXCEPTION_PARAMETER e", |
| "VariableTree: elem.type UNION Test.E1,EMissing", |
| "VariableTree: elem.type.elem null", |
| "VariableTree: type UNION Test.E1,EMissing", |
| "VariableTree: type.elem null"), |
| |
| Uncaught("E1", "E1 | E2", |
| "VariableTree: E1 | E2 e", |
| "VariableTree: elem EXCEPTION_PARAMETER e", |
| "VariableTree: elem.type UNION Test.E1,Test.E2", |
| "VariableTree: elem.type.elem null", |
| "VariableTree: type UNION Test.E1,Test.E2", |
| "VariableTree: type.elem null"); |
| |
| TestKind(String throwsTypes, String catchTypes, String... gold) { |
| this.throwsTypes = throwsTypes; |
| this.catchTypes = catchTypes; |
| this.gold = Arrays.asList(gold); |
| } |
| |
| final String throwsTypes; |
| final String catchTypes; |
| final List<String> gold; |
| } |
| |
| static class TestFileObject extends SimpleJavaFileObject { |
| public static final String template = |
| "class Test {\n" |
| + " class E1 extends Exception { }\n" |
| + " class E2 extends Exception { }\n" |
| + " void doSomething() throws #T { }\n" |
| + " void test() {\n" |
| + " try {\n" |
| + " doSomething();\n" |
| + " } catch (#C e) {\n" |
| + " }\n" |
| + " }\n" |
| + "}\n"; |
| |
| public TestFileObject(TestKind tk) { |
| super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); |
| this.tk = tk; |
| } |
| |
| @Override |
| public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
| return template |
| .replace("#T", tk.throwsTypes) |
| .replace("#C", tk.catchTypes); |
| } |
| final TestKind tk; |
| } |
| |
| public static void main(String... args) throws Exception { |
| JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); |
| List<String> options = Arrays.asList("-proc:only"); |
| for (TestKind tk: TestKind.values()) { |
| System.err.println("Test: " + tk); |
| TestUnionType p = new TestUnionType(); |
| JavaFileObject fo = new TestFileObject(tk); |
| JavaCompiler.CompilationTask task = comp.getTask(null, null, null, options, null, Arrays.asList(fo)); |
| task.setProcessors(Arrays.asList(p)); |
| boolean ok = task.call(); |
| System.err.println("compilation " + (ok ? "passed" : "failed")); |
| if (!ok) |
| throw new Exception("compilation failed unexpectedly"); |
| if (!p.log.equals(tk.gold)) { |
| System.err.println("Expected output:"); |
| for (String g: tk.gold) |
| System.err.println(g); |
| throw new Exception("unexpected output from test"); |
| } |
| System.err.println(); |
| } |
| } |
| |
| Trees trees; |
| List<String> log; |
| |
| @Override |
| public void init(ProcessingEnvironment env) { |
| super.init(env); |
| trees = Trees.instance(env); |
| log = new ArrayList<String>(); |
| } |
| |
| @Override |
| public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { |
| if (!roundEnv.processingOver()) { |
| for (Element e: roundEnv.getRootElements()) { |
| scan(trees.getPath(e)); |
| } |
| } |
| return true; |
| } |
| |
| void scan(TreePath path) { |
| new Scanner().scan(path, null); |
| } |
| |
| class Scanner extends TreePathScanner<Void,Void> { |
| @Override |
| public Void visitVariable(VariableTree tree, Void ignore) { |
| TreePath p = getCurrentPath(); |
| Element e = trees.getElement(p); |
| if (e.getKind() == ElementKind.EXCEPTION_PARAMETER) { |
| log("VariableTree: " + tree); |
| log("VariableTree: elem " + print(e)); |
| log("VariableTree: elem.type " + print(e.asType())); |
| log("VariableTree: elem.type.elem " + print(types.asElement(e.asType()))); |
| TypeMirror tm = trees.getTypeMirror(p); |
| log("VariableTree: type " + print(tm)); |
| log("VariableTree: type.elem " + print(types.asElement(tm))); |
| if (types.asElement(tm) != null) |
| log("VariableTree: type.elem.type " + print(types.asElement(tm).asType())); |
| } |
| return super.visitVariable(tree, null); |
| } |
| |
| String print(TypeMirror tm) { |
| return (tm == null) ? null : new TypePrinter().visit(tm); |
| } |
| |
| String print(Element e) { |
| return (e == null) ? null : (e.getKind() + " " + e.getSimpleName()); |
| } |
| |
| void log(String msg) { |
| System.err.println(msg); |
| log.add(msg); |
| } |
| } |
| |
| class TypePrinter extends SimpleTypeVisitor<String, Void> { |
| @Override |
| protected String defaultAction(TypeMirror tm, Void ignore) { |
| return String.valueOf(tm.getKind()); |
| } |
| |
| @Override |
| public String visitUnion(UnionType t, Void ignore) { |
| return (t.getKind() + " " + t.getAlternatives()); |
| } |
| } |
| } |