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test/tools/javac/processing/model/type/NoTypes.java@2eb010b6cb22 (annotated)

test/tools/javac/processing/model/type/NoTypes.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 1466

b52a38d4536c

parent 0

959103a6100f

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 6418666 6423973 6453386 7025809
aoqi@0	27	* @summary Test the NoTypes: VOID, PACKAGE, NONE
aoqi@0	28	* @author Scott Seligman
aoqi@0	29	* @library /tools/javac/lib
aoqi@0	30	* @build JavacTestingAbstractProcessor
aoqi@0	31	* @compile -g NoTypes.java
aoqi@0	32	* @compile -processor NoTypes -proc:only NoTypes.java
aoqi@0	33	*/
aoqi@0	34
aoqi@0	35	import java.util.Set;
aoqi@0	36	import javax.annotation.processing.*;
aoqi@0	37	import javax.lang.model.SourceVersion;
aoqi@0	38	import javax.lang.model.element.*;
aoqi@0	39	import javax.lang.model.type.*;
aoqi@0	40	import javax.lang.model.util.*;
aoqi@0	41
aoqi@0	42	import static javax.lang.model.type.TypeKind.*;
aoqi@0	43
aoqi@0	44	public class NoTypes extends JavacTestingAbstractProcessor {
aoqi@0	45	public boolean process(Set<? extends TypeElement> annoTypes,
aoqi@0	46	RoundEnvironment round) {
aoqi@0	47	if (!round.processingOver())
aoqi@0	48	doit(annoTypes, round);
aoqi@0	49	return true;
aoqi@0	50	}
aoqi@0	51
aoqi@0	52	private void doit(Set<? extends TypeElement> annoTypes,
aoqi@0	53	RoundEnvironment round) {
aoqi@0	54
aoqi@0	55	// The superclass of Object is NONE.
aoqi@0	56	TypeElement object = elements.getTypeElement("java.lang.Object");
aoqi@0	57	verifyKind(NONE, object.getSuperclass());
aoqi@0	58
aoqi@0	59	// The enclosing type of a top-level class is NONE
aoqi@0	60	verifyKind(NONE, ((DeclaredType)object.asType()).getEnclosingType());
aoqi@0	61
aoqi@0	62	// The superclass of an interface is NONE.
aoqi@0	63	TypeElement i = elements.getTypeElement("NoTypes.I");
aoqi@0	64	verifyKind(NONE, i.getSuperclass());
aoqi@0	65
aoqi@0	66	// The type of a package is PACKAGE.
aoqi@0	67	Element pkg = i.getEnclosingElement().getEnclosingElement();
aoqi@0	68	verifyKind(PACKAGE, pkg.asType());
aoqi@0	69
aoqi@0	70	// A package isn't enclosed. Not yet, anyway.
aoqi@0	71	if (pkg.getEnclosingElement() != null)
aoqi@0	72	throw new AssertionError();
aoqi@0	73
aoqi@0	74	verifyKind(VOID, types.getNoType(VOID));
aoqi@0	75	verifyKind(NONE, types.getNoType(NONE));
aoqi@0	76
aoqi@0	77	// The return type of a constructor or void method is VOID.
aoqi@0	78	class Scanner extends ElementScanner<Void, Void> {
aoqi@0	79	@Override
aoqi@0	80	public Void visitExecutable(ExecutableElement e, Void p) {
aoqi@0	81	verifyKind(VOID, e.getReturnType());
aoqi@0	82	ExecutableType t = (ExecutableType) e.asType();
aoqi@0	83	verifyKind(VOID, t.getReturnType());
aoqi@0	84	return null;
aoqi@0	85	}
aoqi@0	86	}
aoqi@0	87	TypeElement c = elements.getTypeElement("NoTypes.C");
aoqi@0	88	new Scanner().scan(c);
aoqi@0	89	}
aoqi@0	90
aoqi@0	91	/**
aoqi@0	92	* Verify that a NoType instance is of a particular kind, and that
aoqi@0	93	* the latest TypeKindVisitor properly dispatches on it.
aoqi@0	94	*/
aoqi@0	95	private void verifyKind(TypeKind kind, TypeMirror type) {
aoqi@0	96	class Vis extends TypeKindVisitor<TypeKind, Void> {
aoqi@0	97	@Override
aoqi@0	98	public TypeKind visitNoTypeAsVoid(NoType t, Void p) {
aoqi@0	99	return VOID;
aoqi@0	100	}
aoqi@0	101	@Override
aoqi@0	102	public TypeKind visitNoTypeAsPackage(NoType t, Void p) {
aoqi@0	103	return PACKAGE;
aoqi@0	104	}
aoqi@0	105	@Override
aoqi@0	106	public TypeKind visitNoTypeAsNone(NoType t, Void p) {
aoqi@0	107	return NONE;
aoqi@0	108	}
aoqi@0	109	}
aoqi@0	110	if (kind != type.getKind() || kind != new Vis().visit(type))
aoqi@0	111	throw new AssertionError();
aoqi@0	112	}
aoqi@0	113
aoqi@0	114	// Fodder for the tests
aoqi@0	115	interface I {
aoqi@0	116	}
aoqi@0	117
aoqi@0	118	class C {
aoqi@0	119	C() {}
aoqi@0	120	void m() {}
aoqi@0	121	}
aoqi@0	122	}