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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 @org.mapstruct.Mapping} annotation.
*/
public class MappingPrism {
/** store prism value of target */
private String _target;
/** store prism value of source */
private String _source;
/** store prism value of dateFormat */
private String _dateFormat;
/** store prism value of numberFormat */
private String _numberFormat;
/** store prism value of constant */
private String _constant;
/** store prism value of expression */
private String _expression;
/** store prism value of ignore */
private Boolean _ignore;
/** store prism value of qualifiedBy */
private List _qualifiedBy;
/** store prism value of qualifiedByName */
private List _qualifiedByName;
/** store prism value of resultType */
private TypeMirror _resultType;
/** store prism value of dependsOn */
private List _dependsOn;
/** store prism value of defaultValue */
private String _defaultValue;
/**
* 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 @org.mapstruct.Mapping} annotation on 'e'.
* similar to {@code e.getAnnotation(org.mapstruct.Mapping.class)} except that
* an instance of this class rather than an instance of {@code org.mapstruct.Mapping}
* is returned.
*/
public static MappingPrism getInstanceOn(Element e) {
AnnotationMirror m = getMirror("org.mapstruct.Mapping",e);
if(m == null) return null;
return getInstance(m);
}
/** Return a prism of the {@code @org.mapstruct.Mapping} annotation whose mirror is mirror.
*/
public static MappingPrism getInstance(AnnotationMirror mirror) {
return new MappingPrism(mirror);
}
private MappingPrism(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());
}
_target = getValue("target",String.class);
_source = getValue("source",String.class);
_dateFormat = getValue("dateFormat",String.class);
_numberFormat = getValue("numberFormat",String.class);
_constant = getValue("constant",String.class);
_expression = getValue("expression",String.class);
_ignore = getValue("ignore",Boolean.class);
_qualifiedBy = getArrayValues("qualifiedBy",TypeMirror.class);
_qualifiedByName = getArrayValues("qualifiedByName",String.class);
_resultType = getValue("resultType",TypeMirror.class);
_dependsOn = getArrayValues("dependsOn",String.class);
_defaultValue = getValue("defaultValue",String.class);
this.values = new Values(memberValues);
this.mirror = mirror;
this.isValid = valid;
}
/**
* Returns a String representing the value of the {@code java.lang.String target()} member of the Annotation.
* @see org.mapstruct.Mapping#target()
*/
public String target() { return _target; }
/**
* Returns a String representing the value of the {@code java.lang.String source()} member of the Annotation.
* @see org.mapstruct.Mapping#source()
*/
public String source() { return _source; }
/**
* Returns a String representing the value of the {@code java.lang.String dateFormat()} member of the Annotation.
* @see org.mapstruct.Mapping#dateFormat()
*/
public String dateFormat() { return _dateFormat; }
/**
* Returns a String representing the value of the {@code java.lang.String numberFormat()} member of the Annotation.
* @see org.mapstruct.Mapping#numberFormat()
*/
public String numberFormat() { return _numberFormat; }
/**
* Returns a String representing the value of the {@code java.lang.String constant()} member of the Annotation.
* @see org.mapstruct.Mapping#constant()
*/
public String constant() { return _constant; }
/**
* Returns a String representing the value of the {@code java.lang.String expression()} member of the Annotation.
* @see org.mapstruct.Mapping#expression()
*/
public String expression() { return _expression; }
/**
* Returns a Boolean representing the value of the {@code boolean ignore()} member of the Annotation.
* @see org.mapstruct.Mapping#ignore()
*/
public Boolean ignore() { return _ignore; }
/**
* Returns a List representing the value of the {@code qualifiedBy()} member of the Annotation.
* @see org.mapstruct.Mapping#qualifiedBy()
*/
public List qualifiedBy() { return _qualifiedBy; }
/**
* Returns a List representing the value of the {@code qualifiedByName()} member of the Annotation.
* @see org.mapstruct.Mapping#qualifiedByName()
*/
public List qualifiedByName() { return _qualifiedByName; }
/**
* Returns a TypeMirror representing the value of the {@code java.lang.Class resultType()} member of the Annotation.
* @see org.mapstruct.Mapping#resultType()
*/
public TypeMirror resultType() { return _resultType; }
/**
* Returns a List representing the value of the {@code dependsOn()} member of the Annotation.
* @see org.mapstruct.Mapping#dependsOn()
*/
public List dependsOn() { return _dependsOn; }
/**
* Returns a String representing the value of the {@code java.lang.String defaultValue()} member of the Annotation.
* @see org.mapstruct.Mapping#defaultValue()
*/
public String defaultValue() { return _defaultValue; }
/**
* 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 org.mapstruct.Mapping
* 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 target()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue target(){ return values.get("target");}
/** Return the AnnotationValue corresponding to the source()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue source(){ return values.get("source");}
/** Return the AnnotationValue corresponding to the dateFormat()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue dateFormat(){ return values.get("dateFormat");}
/** Return the AnnotationValue corresponding to the numberFormat()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue numberFormat(){ return values.get("numberFormat");}
/** Return the AnnotationValue corresponding to the constant()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue constant(){ return values.get("constant");}
/** Return the AnnotationValue corresponding to the expression()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue expression(){ return values.get("expression");}
/** Return the AnnotationValue corresponding to the ignore()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue ignore(){ return values.get("ignore");}
/** Return the AnnotationValue corresponding to the qualifiedBy()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue qualifiedBy(){ return values.get("qualifiedBy");}
/** Return the AnnotationValue corresponding to the qualifiedByName()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue qualifiedByName(){ return values.get("qualifiedByName");}
/** Return the AnnotationValue corresponding to the resultType()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue resultType(){ return values.get("resultType");}
/** Return the AnnotationValue corresponding to the dependsOn()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue dependsOn(){ return values.get("dependsOn");}
/** Return the AnnotationValue corresponding to the defaultValue()
* member of the annotation, or null when the default value is implied.
*/
public AnnotationValue defaultValue(){ return values.get("defaultValue");}
}
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 = MappingPrism.getValue(memberValues,defaults,name,clazz);
if(result == null) valid = false;
return result;
}
private List getArrayValues(String name, final Class clazz) {
List result = MappingPrism.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();
}
}
