/**
* Powerunit - A JDK1.8 test framework
* Copyright (C) 2014 Mathieu Boretti.
*
* This file is part of Powerunit
*
* Powerunit is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Powerunit 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with Powerunit. If not, see <http://www.gnu.org/licenses/>.
*/
package ch.powerunit.impl.validator;
import java.util.HashSet;
import java.util.Set;
import javax.annotation.processing.ProcessingEnvironment;
import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.Modifier;
import javax.lang.model.element.TypeElement;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror;
import ch.powerunit.Parameters;
public interface ParametersProcessorValidator extends ProcessValidator {
default void parametersValidation(ProcessingEnvironment processingEnv,
RoundEnvironment roundEnv) {
Set<Element> exists = new HashSet<>();
Set<? extends Element> elements = roundEnv
.getElementsAnnotatedWith(Parameters.class);
TypeElement stream = processingEnv.getElementUtils().getTypeElement(
"java.util.stream.Stream");
for (Element element : elements) {
if (element.getKind() != ElementKind.METHOD) {
error("@Parameters must prefix a method -- " + element
+ " is not a method");
continue;
}
Element parent = element.getEnclosingElement();
if (exists.contains(parent)) {
warn("Class "
+ elementAsString(parent)
+ "\n\t contains more than one @Parameters method\n\tOnly one @Parameters method is allowed for a test class");
}
exists.add(parent);
ExecutableElement ee = (ExecutableElement) element;
if (!ee.getModifiers().contains(Modifier.STATIC)) {
warn("Method "
+ elementAsString(element)
+ "\n\tis prefixed with @Parameters and is not static\n\tThe parameters method must be static");
}
if (!ee.getModifiers().contains(Modifier.PUBLIC)) {
warn("Method "
+ elementAsString(element)
+ "\n\tis prefixed with @Parameters and is not public\n\tThe parameters method must be public");
}
TypeMirror rt = ee.getReturnType();
if (rt.getKind() != TypeKind.DECLARED) {
warn("Method " + elementAsString(element)
+ "\n\tis prefixed with @Parameters and return " + rt
+ "\n\tThe parameters method must return " + stream);
} else {
DeclaredType dt = (DeclaredType) rt;
if (!processingEnv.getTypeUtils().isSubtype(
dt.asElement().asType(), stream.asType())) {
warn("Method " + elementAsString(element)
+ "\n\tis prefixed with @Parameters and return "
+ dt.asElement().asType()
+ "\n\tThe parameters method must return " + stream);
}
}
if (!ee.getParameters().isEmpty()) {
warn("Method "
+ elementAsString(element)
+ "\n\tis prefixed with @Parameters and is not 0-args\n\tThe parameters method must be 0-args");
}
}
}
}