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test/tools/javac/multicatch/model/ModelChecker.java@2eb010b6cb22 (annotated)

test/tools/javac/multicatch/model/ModelChecker.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) 2010, 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 6993963 7025809
aoqi@0	27	* @summary Project Coin: Use precise exception analysis for effectively final catch parameters
aoqi@0	28	* @library /tools/javac/lib
aoqi@0	29	* @build JavacTestingAbstractProcessor ModelChecker
aoqi@0	30	* @compile -processor ModelChecker Model01.java
aoqi@0	31	*/
aoqi@0	32
aoqi@0	33	import com.sun.source.tree.CatchTree;
aoqi@0	34	import com.sun.source.util.TreePathScanner;
aoqi@0	35	import com.sun.source.util.Trees;
aoqi@0	36	import com.sun.source.util.TreePath;
aoqi@0	37
aoqi@0	38	import java.util.Set;
aoqi@0	39	import javax.annotation.processing.RoundEnvironment;
aoqi@0	40	import javax.annotation.processing.SupportedAnnotationTypes;
aoqi@0	41	import javax.lang.model.element.Element;
aoqi@0	42	import javax.lang.model.element.ElementKind;
aoqi@0	43	import javax.lang.model.element.TypeElement;
aoqi@0	44	import javax.lang.model.type.TypeMirror;
aoqi@0	45	import javax.lang.model.type.TypeKind;
aoqi@0	46	import javax.lang.model.type.UnionType;
aoqi@0	47	import javax.lang.model.type.UnknownTypeException;
aoqi@0	48	import javax.lang.model.util.SimpleTypeVisitor6;
aoqi@0	49	import javax.lang.model.util.SimpleTypeVisitor7;
aoqi@0	50
aoqi@0	51	@SupportedAnnotationTypes("Check")
aoqi@0	52	public class ModelChecker extends JavacTestingAbstractProcessor {
aoqi@0	53
aoqi@0	54	@Override
aoqi@0	55	public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
aoqi@0	56	if (roundEnv.processingOver())
aoqi@0	57	return true;
aoqi@0	58
aoqi@0	59	Trees trees = Trees.instance(processingEnv);
aoqi@0	60
aoqi@0	61	TypeElement testAnno = elements.getTypeElement("Check");
aoqi@0	62	for (Element elem: roundEnv.getElementsAnnotatedWith(testAnno)) {
aoqi@0	63	TreePath p = trees.getPath(elem);
aoqi@0	64	new MulticatchParamTester(trees).scan(p, null);
aoqi@0	65	}
aoqi@0	66	return true;
aoqi@0	67	}
aoqi@0	68
aoqi@0	69	class MulticatchParamTester extends TreePathScanner<Void, Void> {
aoqi@0	70	Trees trees;
aoqi@0	71
aoqi@0	72	public MulticatchParamTester(Trees trees) {
aoqi@0	73	super();
aoqi@0	74	this.trees = trees;
aoqi@0	75	}
aoqi@0	76
aoqi@0	77	@Override
aoqi@0	78	public Void visitCatch(CatchTree node, Void p) {
aoqi@0	79	TreePath param = new TreePath(getCurrentPath(), node.getParameter());
aoqi@0	80	Element ex = trees.getElement(param);
aoqi@0	81	validateUnionTypeInfo(ex);
aoqi@0	82	if (ex.getSimpleName().contentEquals("ex")) {
aoqi@0	83	assertTrue(ex.getKind() == ElementKind.EXCEPTION_PARAMETER, "Expected EXCEPTION_PARAMETER - found " + ex.getKind());
aoqi@0	84	for (Element e : types.asElement(trees.getLub(node)).getEnclosedElements()) {
aoqi@0	85	Member m = e.getAnnotation(Member.class);
aoqi@0	86	if (m != null) {
aoqi@0	87	assertTrue(e.getKind() == m.value(), "Expected " + m.value() + " - found " + e.getKind());
aoqi@0	88	}
aoqi@0	89	}
aoqi@0	90	assertTrue(assertionCount == 9, "Expected 9 assertions - found " + assertionCount);
aoqi@0	91	}
aoqi@0	92	return super.visitCatch(node, p);
aoqi@0	93	}
aoqi@0	94	}
aoqi@0	95
aoqi@0	96	private void validateUnionTypeInfo(Element ex) {
aoqi@0	97	UnionTypeInfo ut = ex.getAnnotation(UnionTypeInfo.class);
aoqi@0	98	assertTrue(ut != null, "UnionType annotation must be present");
aoqi@0	99
aoqi@0	100	TypeMirror expectedUnionType = ex.asType();
aoqi@0	101	assertTrue(expectedUnionType.getKind() == TypeKind.UNION, "UNION kind expected");
aoqi@0	102
aoqi@0	103	try {
aoqi@0	104	new SimpleTypeVisitor6<Void, Void>(){}.visit(expectedUnionType);
aoqi@0	105	throw new RuntimeException("Expected UnknownTypeException not thrown.");
aoqi@0	106	} catch (UnknownTypeException ute) {
aoqi@0	107	; // Expected
aoqi@0	108	}
aoqi@0	109
aoqi@0	110	UnionType unionType = new SimpleTypeVisitor<UnionType, Void>(){
aoqi@0	111	@Override
aoqi@0	112	protected UnionType defaultAction(TypeMirror e, Void p) {return null;}
aoqi@0	113
aoqi@0	114	@Override
aoqi@0	115	public UnionType visitUnion(UnionType t, Void p) {return t;}
aoqi@0	116	}.visit(expectedUnionType);
aoqi@0	117	assertTrue(unionType != null, "Must get a non-null union type.");
aoqi@0	118
aoqi@0	119	assertTrue(ut.value().length == unionType.getAlternatives().size(), "Cardinalities do not match");
aoqi@0	120
aoqi@0	121	String[] typeNames = ut.value();
aoqi@0	122	for(int i = 0; i < typeNames.length; i++) {
aoqi@0	123	TypeMirror typeFromAnnotation = nameToType(typeNames[i]);
aoqi@0	124	assertTrue(types.isSameType(typeFromAnnotation, unionType.getAlternatives().get(i)),
aoqi@0	125	"Types were not equal.");
aoqi@0	126	}
aoqi@0	127	}
aoqi@0	128
aoqi@0	129	private TypeMirror nameToType(String name) {
aoqi@0	130	return elements.getTypeElement(name).asType();
aoqi@0	131	}
aoqi@0	132
aoqi@0	133	private static void assertTrue(boolean cond, String msg) {
aoqi@0	134	assertionCount++;
aoqi@0	135	if (!cond)
aoqi@0	136	throw new AssertionError(msg);
aoqi@0	137	}
aoqi@0	138
aoqi@0	139	static int assertionCount = 0;
aoqi@0	140	}