/**
* 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.Modifier;
import javax.lang.model.element.Name;
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.Parameter;
public interface ParameterProcessorValidator extends ProcessValidator {
default void parameterAnnotationValidation(
ProcessingEnvironment processingEnv, RoundEnvironment roundEnv) {
TypeElement predicate = processingEnv.getElementUtils().getTypeElement(
"java.util.function.BiFunction");
Set<Name> exists = new HashSet<>();
roundEnv.getElementsAnnotatedWith(Parameter.class)
.forEach(
(Element element) -> {
if (element.getKind() != ElementKind.FIELD) {
error("@Parameter must prefix a field -- "
+ element + " is not a field");
return;
}
Element parent = element.getEnclosingElement();
if (element.getAnnotation(Parameter.class).filter()) {
if (exists.contains(parent.getSimpleName())) {
warn("Class "
+ elementAsString(parent)
+ "\n\t contains more than one @Parameter field with filter = true\n\tOnly one @Parameter field can use the filter attribute with true value.");
}
exists.add(parent.getSimpleName());
TypeMirror rt = element.asType();
if (rt.getKind() != TypeKind.DECLARED) {
warn("Field "
+ elementAsString(element)
+ "\n\tis prefixed with @Parameter(filter=true) and is "
+ element
+ "\n\tA predicate field must be "
+ predicate);
} else {
DeclaredType dt = (DeclaredType) rt;
if (!processingEnv.getTypeUtils()
.isSubtype(dt.asElement().asType(),
predicate.asType())) {
warn("Field "
+ elementAsString(element)
+ "\n\tis prefixed with @Parameter(filter=true) and is "
+ dt.asElement().asType()
+ "\n\tA predicate field must be "
+ predicate);
}
}
}
if (element.getModifiers()
.contains(Modifier.STATIC)) {
warn("Field "
+ elementAsString(element)
+ "\n\tis prefixed with @Parameter and is static\n\tA parameter field can't be static");
}
if (!element.getModifiers().contains(
Modifier.PUBLIC)) {
warn("Field "
+ elementAsString(element)
+ "\n\tis prefixed with @Parameter and is not public\n\tA parameter field must be public");
}
if (element.getAnnotation(Parameter.class).value() < 0) {
warn("Field "
+ elementAsString(element)
+ "\n\tis prefixed with @Parameter and value is "
+ element
.getAnnotation(Parameter.class)
.value()
+ "\n\tA parameter field value must be >=0");
}
});
}
}