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test/tools/javac/processing/model/element/TestTypeParameter.java@959103a6100f (annotated)

test/tools/javac/processing/model/element/TestTypeParameter.java

Wed, 27 Apr 2016 01:34:52 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:34:52 +0800

changeset 0

959103a6100f

child 2525

2eb010b6cb22

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 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 6505047
aoqi@0	27	* @summary javax.lang.model.element.Element.getEnclosingElement() doesn't return null for type parameter
aoqi@0	28	* @library /tools/javac/lib
aoqi@0	29	* @build JavacTestingAbstractProcessor TestTypeParameter
aoqi@0	30	* @compile -processor TestTypeParameter -proc:only TestTypeParameter.java
aoqi@0	31	*/
aoqi@0	32
aoqi@0	33	import java.util.*;
aoqi@0	34	import javax.annotation.processing.*;
aoqi@0	35	import javax.lang.model.element.*;
aoqi@0	36	import javax.lang.model.util.*;
aoqi@0	37	import javax.tools.*;
aoqi@0	38
aoqi@0	39	public class TestTypeParameter<T> extends JavacTestingAbstractProcessor {
aoqi@0	40	int round = 0;
aoqi@0	41
aoqi@0	42	public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
aoqi@0	43	if (++round == 1) {
aoqi@0	44	int found = (new Scanner()).scan(roundEnv.getRootElements(), null);
aoqi@0	45	if (found == expect) {
aoqi@0	46	note("generic elements found and verified: " + found);
aoqi@0	47	} else {
aoqi@0	48	error("unexpected number of results: expected " + expect
aoqi@0	49	+ ", found " + found);
aoqi@0	50	}
aoqi@0	51
aoqi@0	52	}
aoqi@0	53	return true;
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	class Scanner extends ElementScanner7<Integer,Void> {
aoqi@0	57	@Override
aoqi@0	58	public Integer visitExecutable(ExecutableElement e, Void p) {
aoqi@0	59	super.visitExecutable(e, p);
aoqi@0	60	found += check(e, e.getTypeParameters());
aoqi@0	61	return found;
aoqi@0	62	}
aoqi@0	63
aoqi@0	64	@Override
aoqi@0	65	public Integer visitType(TypeElement e, Void p) {
aoqi@0	66	super.visitType(e, p);
aoqi@0	67	found += check(e, e.getTypeParameters());
aoqi@0	68	return found;
aoqi@0	69	}
aoqi@0	70
aoqi@0	71	int found;
aoqi@0	72	}
aoqi@0	73
aoqi@0	74	/**
aoqi@0	75	* Check if type parameters, if any, have expected owner.
aoqi@0	76	* Return 1 if typarams not empty and all have expected owner, else return 0.
aoqi@0	77	*/
aoqi@0	78	int check(Element e, List<? extends TypeParameterElement> typarams) {
aoqi@0	79	note("checking " + e, e);
aoqi@0	80	if (typarams.isEmpty()) {
aoqi@0	81	note("no type parameters found", e);
aoqi@0	82	return 0;
aoqi@0	83	}
aoqi@0	84	for (TypeParameterElement tpe: typarams) {
aoqi@0	85	note("checking type parameter " + tpe, tpe);
aoqi@0	86	if (tpe.getEnclosingElement() != e) {
aoqi@0	87	error("unexpected owner; expected: " + e
aoqi@0	88	+ ", found " + tpe.getEnclosingElement(),
aoqi@0	89	tpe);
aoqi@0	90	return 0;
aoqi@0	91	}
aoqi@0	92	if (tpe.getEnclosingElement() != tpe.getGenericElement()) {
aoqi@0	93	error("unexpected generic element; expected: " + tpe.getGenericElement()
aoqi@0	94	+ ", found " + tpe.getEnclosingElement(),
aoqi@0	95	tpe);
aoqi@0	96	return 0;
aoqi@0	97	}
aoqi@0	98	}
aoqi@0	99	note("verified " + e, e);
aoqi@0	100	return 1;
aoqi@0	101	}
aoqi@0	102
aoqi@0	103	void note(String msg) {
aoqi@0	104	messager.printMessage(Diagnostic.Kind.NOTE, msg);
aoqi@0	105	}
aoqi@0	106
aoqi@0	107	void note(String msg, Element e) {
aoqi@0	108	messager.printMessage(Diagnostic.Kind.NOTE, msg, e);
aoqi@0	109	}
aoqi@0	110
aoqi@0	111	void error(String msg, Element e) {
aoqi@0	112	messager.printMessage(Diagnostic.Kind.ERROR, msg, e);
aoqi@0	113	}
aoqi@0	114
aoqi@0	115	void error(String msg) {
aoqi@0	116	messager.printMessage(Diagnostic.Kind.ERROR, msg);
aoqi@0	117	}
aoqi@0	118
aoqi@0	119	// additional generic elements to test
aoqi@0	120	<X> X m(X x) { return x; }
aoqi@0	121
aoqi@0	122	interface Intf<X> { X m() ; }
aoqi@0	123
aoqi@0	124	class Class<X> {
aoqi@0	125	<Y> Class() { }
aoqi@0	126	}
aoqi@0	127
aoqi@0	128	final int expect = 5; // top level class, plus preceding examples
aoqi@0	129	}