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package org.mapstruct.ap.internal.prism;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.Element;
import javax.lang.model.element.VariableElement;
import javax.lang.model.element.AnnotationValue;
import javax.lang.model.type.TypeMirror;
import net.java.dev.hickory.prism.internal.*;
import java.util.HashMap;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.util.ElementFilter;
/** A Prism representing an {@code @javax.xml.bind.annotation.XmlElementRef} annotation.
*/
public class XmlElementRefPrism {
/** store prism value of type */
private TypeMirror _type;
/** store prism value of namespace */
private String _namespace;
/** store prism value of name */
private String _name;
/** store prism value of required */
private Boolean _required;
/**
* An instance of the Values inner class whose
* methods return the AnnotationValues used to build this prism.
* Primarily intended to support using Messager.
*/
public final Values values;
/** Return a prism representing the {@code @javax.xml.bind.annotation.XmlElementRef} annotation on 'e'.
* similar to {@code e.getAnnotation(javax.xml.bind.annotation.XmlElementRef.class)} except that
* an instance of this class rather than an instance of {@code javax.xml.bind.annotation.XmlElementRef}
* is returned.
*/
public static XmlElementRefPrism getInstanceOn(Element e) {
AnnotationMirror m = getMirror("javax.xml.bind.annotation.XmlElementRef",e);
if(m == null) return null;
return getInstance(m);
}
/** Return a prism of the {@code @javax.xml.bind.annotation.XmlElementRef} annotation whose mirror is mirror.
*/
public static XmlElementRefPrism getInstance(AnnotationMirror mirror) {
return new XmlElementRefPrism(mirror);
}
private XmlElementRefPrism(AnnotationMirror mirror) {
for(ExecutableElement key : mirror.getElementValues().keySet()) {
memberValues.put(key.getSimpleName().toString(),mirror.getElementValues().get(key));
}
for(ExecutableElement member : ElementFilter.methodsIn(mirror.getAnnotationType().asElement().getEnclosedElements())) {
defaults.put(member.getSimpleName().toString(),member.getDefaultValue());
}
_type = getValue("type",TypeMirror.class);
_namespace = getValue("namespace",String.class);
_name = getValue("name",String.class);
_required = getValue("required",Boolean.class);
this.values = new Values(memberValues);
this.mirror = mirror;
this.isValid = valid;
}
/**
* Returns a TypeMirror representing the value of the {@code java.lang.Class type()} member of the Annotation.
* @see javax.xml.bind.annotation.XmlElementRef#type()
*/
public TypeMirror type() { return _type; }
/**
* Returns a String representing the value of the {@code java.lang.String namespace()} member of the Annotation.
* @see javax.xml.bind.annotation.XmlElementRef#namespace()
*/
public String namespace() { return _namespace; }
/**
* Returns a String representing the value of the {@code java.lang.String name()} member of the Annotation.
* @see javax.xml.bind.annotation.XmlElementRef#name()
*/
public String name() { return _name; }
/**
* Returns a Boolean representing the value of the {@code boolean required()} member of the Annotation.
* @see javax.xml.bind.annotation.XmlElementRef#required()
*/
public Boolean required() { return _required; }
/**
* Determine whether the underlying AnnotationMirror has no errors.
* True if the underlying AnnotationMirror has no errors.
* When true is returned, none of the methods will return null.
* When false is returned, a least one member will either return null, or another
* prism that is not valid.
*/
public final boolean isValid;
/**
* The underlying AnnotationMirror of the annotation
* represented by this Prism.
* Primarily intended to support using Messager.
*/
public final AnnotationMirror mirror;
/**
* A class whose members corespond to those of javax.xml.bind.annotation.XmlElementRef
* but which each return the AnnotationValue corresponding to
* that member in the model of the annotations. Returns null for
* defaulted members. Used for Messager, so default values are not useful.
*/
public static class Values {
private Map values;
private Values(Map values) {
this.values = values;
}
/** Return the AnnotationValue corresponding to the type()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue type(){ return values.get("type");}
/** Return the AnnotationValue corresponding to the namespace()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue namespace(){ return values.get("namespace");}
/** Return the AnnotationValue corresponding to the name()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue name(){ return values.get("name");}
/** Return the AnnotationValue corresponding to the required()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue required(){ return values.get("required");}
}
private Map defaults = new HashMap(10);
private Map memberValues = new HashMap(10);
private boolean valid = true;
private T getValue(String name, Class clazz) {
T result = XmlElementRefPrism.getValue(memberValues,defaults,name,clazz);
if(result == null) valid = false;
return result;
}
private List getArrayValues(String name, final Class clazz) {
List result = XmlElementRefPrism.getArrayValues(memberValues,defaults,name,clazz);
if(result == null) valid = false;
return result;
}
private static AnnotationMirror getMirror(String fqn, Element target) {
for (AnnotationMirror m :target.getAnnotationMirrors()) {
CharSequence mfqn = ((TypeElement)m.getAnnotationType().asElement()).getQualifiedName();
if(fqn.contentEquals(mfqn)) return m;
}
return null;
}
private static T getValue(Map memberValues, Map defaults, String name, Class clazz) {
AnnotationValue av = memberValues.get(name);
if(av == null) av = defaults.get(name);
if(av == null) {
return null;
}
if(clazz.isInstance(av.getValue())) return clazz.cast(av.getValue());
return null;
}
private static List getArrayValues(Map memberValues, Map defaults, String name, final Class clazz) {
AnnotationValue av = memberValues.get(name);
if(av == null) av = defaults.get(name);
if(av == null) {
return null;
}
if(av.getValue() instanceof List) {
List result = new ArrayList();
for(AnnotationValue v : getValueAsList(av)) {
if(clazz.isInstance(v.getValue())) {
result.add(clazz.cast(v.getValue()));
} else{
return null;
}
}
return result;
} else {
return null;
}
}
@SuppressWarnings("unchecked")
private static List getValueAsList(AnnotationValue av) {
return (List)av.getValue();
}
}
