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Java example source code file (ModelChecker.java)
The ModelChecker.java Java example source code/* * 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 * or visit www.oracle.com if you need additional information or have any * questions. */ import com.sun.source.tree.ExpressionTree; import com.sun.source.tree.Tree; import com.sun.source.tree.TypeCastTree; import com.sun.source.tree.VariableTree; import com.sun.source.util.TreePathScanner; import com.sun.source.util.Trees; import com.sun.source.util.TreePath; import com.sun.tools.javac.tree.JCTree.JCExpression; import java.util.Set; import javax.annotation.processing.RoundEnvironment; import javax.annotation.processing.SupportedAnnotationTypes; import javax.lang.model.element.Element; import javax.lang.model.element.TypeElement; import javax.lang.model.type.TypeMirror; import javax.lang.model.type.TypeKind; import javax.lang.model.type.IntersectionType; import javax.lang.model.type.UnknownTypeException; import javax.lang.model.util.SimpleTypeVisitor6; import javax.lang.model.util.SimpleTypeVisitor7; @SupportedAnnotationTypes("Check") public class ModelChecker extends JavacTestingAbstractProcessor { @Override public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { if (roundEnv.processingOver()) return true; Trees trees = Trees.instance(processingEnv); TypeElement testAnno = elements.getTypeElement("Check"); for (Element elem: roundEnv.getElementsAnnotatedWith(testAnno)) { TreePath p = trees.getPath(elem); new IntersectionCastTester(trees).scan(p, null); } return true; } class IntersectionCastTester extends TreePathScanner<Void, Void> { Trees trees; public IntersectionCastTester(Trees trees) { super(); this.trees = trees; } @Override public Void visitVariable(VariableTree node, Void p) { TreePath varPath = new TreePath(getCurrentPath(), node); Element v = trees.getElement(varPath); IntersectionTypeInfo it = v.getAnnotation(IntersectionTypeInfo.class); assertTrue(it != null, "IntersectionType annotation must be present"); ExpressionTree varInit = node.getInitializer(); assertTrue(varInit != null && varInit.getKind() == Tree.Kind.TYPE_CAST, "variable must have be initialized to an expression containing an intersection type cast"); TypeMirror t = ((JCExpression)((TypeCastTree)varInit).getType()).type; validateIntersectionTypeInfo(t, it); for (Element e2 : types.asElement(t).getEnclosedElements()) { assertTrue(false, "an intersection type has no declared members"); } for (Element e2 : elements.getAllMembers((TypeElement)types.asElement(t))) { Member m = e2.getAnnotation(Member.class); if (m != null) { assertTrue(e2.getKind() == m.value(), "Expected " + m.value() + " - found " + e2.getKind()); } } assertTrue(assertionCount == 9, "Expected 9 assertions - found " + assertionCount); return super.visitVariable(node, p); } } private void validateIntersectionTypeInfo(TypeMirror expectedIntersectionType, IntersectionTypeInfo it) { assertTrue(expectedIntersectionType.getKind() == TypeKind.INTERSECTION, "INTERSECTION kind expected"); try { new SimpleTypeVisitor6<Void, Void>(){}.visit(expectedIntersectionType); throw new RuntimeException("Expected UnknownTypeException not thrown."); } catch (UnknownTypeException ute) { ; // Expected } try { new SimpleTypeVisitor7<Void, Void>(){}.visit(expectedIntersectionType); throw new RuntimeException("Expected UnknownTypeException not thrown."); } catch (UnknownTypeException ute) { ; // Expected } IntersectionType intersectionType = new SimpleTypeVisitor<IntersectionType, Void>(){ @Override protected IntersectionType defaultAction(TypeMirror e, Void p) {return null;} @Override public IntersectionType visitIntersection(IntersectionType t, Void p) {return t;} }.visit(expectedIntersectionType); assertTrue(intersectionType != null, "Must get a non-null intersection type."); assertTrue(it.value().length == intersectionType.getBounds().size(), "Cardinalities do not match"); String[] typeNames = it.value(); for(int i = 0; i < typeNames.length; i++) { TypeMirror typeFromAnnotation = nameToType(typeNames[i]); assertTrue(types.isSameType(typeFromAnnotation, intersectionType.getBounds().get(i)), "Types were not equal."); } } private TypeMirror nameToType(String name) { return elements.getTypeElement(name).asType(); } private static void assertTrue(boolean cond, String msg) { assertionCount++; if (!cond) throw new AssertionError(msg); } static int assertionCount = 0; } Other Java examples (source code examples)Here is a short list of links related to this Java ModelChecker.java source code file: |
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