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A Symbol Solver for Java, built on top of JavaParser (core)
package com.github.javaparser.symbolsolver.reflectionmodel;
import com.github.javaparser.symbolsolver.javaparsermodel.LambdaArgumentTypePlaceholder;
import com.github.javaparser.symbolsolver.logic.FunctionalInterfaceLogic;
import com.github.javaparser.symbolsolver.model.declarations.*;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
import com.github.javaparser.symbolsolver.model.resolution.UnsolvedSymbolException;
import com.github.javaparser.symbolsolver.model.typesystem.NullType;
import com.github.javaparser.symbolsolver.model.typesystem.ReferenceType;
import com.github.javaparser.symbolsolver.model.typesystem.ReferenceTypeImpl;
import com.github.javaparser.symbolsolver.model.typesystem.Type;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.TypeVariable;
import java.util.*;
import java.util.stream.Collectors;
/**
* @author Federico Tomassetti
*/
class ReflectionClassAdapter {
private Class> clazz;
private TypeSolver typeSolver;
private ReferenceTypeDeclaration typeDeclaration;
public ReflectionClassAdapter(Class> clazz, TypeSolver typeSolver, ReferenceTypeDeclaration typeDeclaration) {
this.clazz = clazz;
this.typeSolver = typeSolver;
this.typeDeclaration = typeDeclaration;
}
public ReferenceTypeImpl getSuperClass() {
if (clazz.getGenericSuperclass() == null) {
return null;
}
java.lang.reflect.Type superType = clazz.getGenericSuperclass();
if (superType instanceof ParameterizedType) {
ParameterizedType parameterizedType = (ParameterizedType) superType;
List typeParameters = Arrays.stream(parameterizedType.getActualTypeArguments())
.map((t) -> ReflectionFactory.typeUsageFor(t, typeSolver))
.collect(Collectors.toList());
return new ReferenceTypeImpl(new ReflectionClassDeclaration(clazz.getSuperclass(), typeSolver), typeParameters, typeSolver);
}
return new ReferenceTypeImpl(new ReflectionClassDeclaration(clazz.getSuperclass(), typeSolver), typeSolver);
}
public List getInterfaces() {
List interfaces = new ArrayList<>();
for (java.lang.reflect.Type superInterface : clazz.getGenericInterfaces()) {
if (superInterface instanceof ParameterizedType) {
ParameterizedType parameterizedType = (ParameterizedType) superInterface;
List typeParameters = Arrays.stream(parameterizedType.getActualTypeArguments())
.map((t) -> ReflectionFactory.typeUsageFor(t, typeSolver))
.collect(Collectors.toList());
interfaces.add(new ReferenceTypeImpl(new ReflectionInterfaceDeclaration((Class>) ((ParameterizedType) superInterface).getRawType(), typeSolver), typeParameters, typeSolver));
} else {
interfaces.add(new ReferenceTypeImpl(new ReflectionInterfaceDeclaration((Class>) superInterface, typeSolver), typeSolver));
}
}
return interfaces;
}
public List getAncestors() {
List ancestors = new LinkedList<>();
if (getSuperClass() != null) {
ReferenceTypeImpl superClass = getSuperClass();
ancestors.add(superClass);
} else {
ReferenceTypeImpl object = new ReferenceTypeImpl(new ReflectionClassDeclaration(Object.class, typeSolver), typeSolver);
ancestors.add(object);
}
ancestors.addAll(getInterfaces());
for (int i = 0; i < ancestors.size(); i++) {
ReferenceType ancestor = ancestors.get(i);
if (ancestor.hasName() && ancestor.getQualifiedName().equals(Object.class.getCanonicalName())) {
ancestors.remove(i);
i--;
}
}
return ancestors;
}
public FieldDeclaration getField(String name) {
for (Field field : clazz.getDeclaredFields()) {
if (field.getName().equals(name)) {
return new ReflectionFieldDeclaration(field, typeSolver);
}
}
for (ReferenceType ancestor : typeDeclaration.getAllAncestors()) {
if (ancestor.getTypeDeclaration().hasField(name)) {
ReflectionFieldDeclaration reflectionFieldDeclaration = (ReflectionFieldDeclaration) ancestor.getTypeDeclaration().getField(name);
return reflectionFieldDeclaration.replaceType(ancestor.getFieldType(name).get());
}
}
throw new UnsolvedSymbolException(name, "Field in " + this);
}
public boolean hasField(String name) {
for (Field field : clazz.getDeclaredFields()) {
if (field.getName().equals(name)) {
return true;
}
}
ReferenceTypeImpl superclass = getSuperClass();
if (superclass == null) {
return false;
} else {
return superclass.getTypeDeclaration().hasField(name);
}
}
public List getAllFields() {
ArrayList fields = new ArrayList<>();
for (Field field : clazz.getDeclaredFields()) {
fields.add(new ReflectionFieldDeclaration(field, typeSolver));
}
for (ReferenceType ancestor : typeDeclaration.getAllAncestors()) {
fields.addAll(ancestor.getTypeDeclaration().getAllFields());
}
return fields;
}
public Set getDeclaredMethods() {
return Arrays.stream(clazz.getDeclaredMethods())
.filter(m -> !m.isSynthetic() && !m.isBridge())
.map(m -> new ReflectionMethodDeclaration(m, typeSolver))
.collect(Collectors.toSet());
}
public List getTypeParameters() {
List params = new ArrayList<>();
for (TypeVariable> tv : this.clazz.getTypeParameters()) {
params.add(new ReflectionTypeParameter(tv, true, typeSolver));
}
return params;
}
public boolean isAssignableBy(Type type) {
if (type instanceof NullType) {
return true;
}
if (type instanceof LambdaArgumentTypePlaceholder) {
return isFunctionalInterface();
}
if (type.isArray()) {
return false;
}
if (type.isPrimitive()) {
return false;
}
if (type.describe().equals(typeDeclaration.getQualifiedName())) {
return true;
}
if (type instanceof ReferenceTypeImpl) {
ReferenceTypeImpl otherTypeDeclaration = (ReferenceTypeImpl) type;
return otherTypeDeclaration.getTypeDeclaration().canBeAssignedTo(typeDeclaration);
}
return false;
}
public boolean hasDirectlyAnnotation(String canonicalName) {
for (Annotation a : clazz.getDeclaredAnnotations()) {
if (a.annotationType().getCanonicalName().equals(canonicalName)) {
return true;
}
}
return false;
}
private final boolean isFunctionalInterface() {
return FunctionalInterfaceLogic.getFunctionalMethod(typeDeclaration).isPresent();
}
public List getConstructors() {
return Arrays.stream(clazz.getConstructors())
.map(m -> new ReflectionConstructorDeclaration(m, typeSolver))
.collect(Collectors.toList());
}
public Optional containerType() {
Class> declaringClass = clazz.getDeclaringClass();
return declaringClass == null ?
Optional.empty() :
Optional.of(ReflectionFactory.typeDeclarationFor(declaringClass, typeSolver));
}
}
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