/*
* Copyright 2013 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.gradle.api.internal.tasks.options;
import org.gradle.internal.exceptions.ValueCollectingDiagnosticsVisitor;
import org.gradle.internal.reflect.JavaMethod;
import org.gradle.internal.reflect.JavaReflectionUtil;
import org.gradle.internal.typeconversion.NotationParser;
import java.lang.annotation.IncompleteAnnotationException;
import java.lang.reflect.Method;
import java.util.Set;
abstract class AbstractOptionElement implements OptionElement {
private final String optionName;
private final String description;
private final int order;
private final Class<?> optionType;
private final NotationParser<CharSequence, ?> notationParser;
public AbstractOptionElement(String optionName, Option option, Class<?> optionType, Class<?> declaringClass, NotationParser<CharSequence, ?> notationParser) {
this.description = readDescription(option, optionName, declaringClass);
this.order = option.order();
this.optionName = optionName;
this.optionType = optionType;
this.notationParser = notationParser;
}
public Set<String> getAvailableValues() {
ValueCollectingDiagnosticsVisitor visitor = new ValueCollectingDiagnosticsVisitor();
notationParser.describe(visitor);
return visitor.getValues();
}
public Class<?> getOptionType() {
return optionType;
}
private String readDescription(Option option, String optionName, Class<?> declaringClass) {
try {
return option.description();
} catch (IncompleteAnnotationException ex) {
throw new OptionValidationException(String.format("No description set on option '%s' at for class '%s'.", optionName, declaringClass.getName()));
}
}
protected Object invokeMethod(Object object, Method method, Object... parameterValues) {
final JavaMethod<Object, Object> javaMethod = JavaReflectionUtil.method(Object.class, method);
return javaMethod.invoke(object, parameterValues);
}
public String getOptionName() {
return optionName;
}
public String getDescription() {
return description;
}
public int getOrder() {
return order;
}
protected NotationParser<CharSequence, ?> getNotationParser() {
return notationParser;
}
protected static <T> NotationParser<CharSequence, T> createNotationParserOrFail(OptionValueNotationParserFactory optionValueNotationParserFactory, String optionName, Class<T> optionType, Class<?> declaringClass) {
try {
return optionValueNotationParserFactory.toComposite(optionType);
} catch (OptionValidationException ex) {
throw new OptionValidationException(String.format("Option '%s' cannot be casted to type '%s' in class '%s'.",
optionName, optionType.getName(), declaringClass.getName()));
}
}
protected static Class<?> calculateOptionType(Class<?> type) {
//we don't want to support "--flag true" syntax
if (type == Boolean.class || type == Boolean.TYPE) {
return Void.TYPE;
} else {
return type;
}
}
}