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/*
* Copyright 2016 Federico Tomassetti
*
* 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 com.github.javaparser.symbolsolver.reflectionmodel;
import com.github.javaparser.ast.AccessSpecifier;
import com.github.javaparser.resolution.MethodUsage;
import com.github.javaparser.resolution.declarations.*;
import com.github.javaparser.resolution.types.ResolvedReferenceType;
import com.github.javaparser.resolution.types.ResolvedType;
import com.github.javaparser.symbolsolver.core.resolution.Context;
import com.github.javaparser.symbolsolver.logic.AbstractTypeDeclaration;
import com.github.javaparser.symbolsolver.logic.ConfilictingGenericTypesException;
import com.github.javaparser.symbolsolver.logic.InferenceContext;
import com.github.javaparser.symbolsolver.model.resolution.SymbolReference;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
import com.github.javaparser.symbolsolver.model.typesystem.ReferenceTypeImpl;
import java.util.*;
import java.util.stream.Collectors;
/**
* @author Federico Tomassetti
*/
public class ReflectionEnumDeclaration extends AbstractTypeDeclaration implements ResolvedEnumDeclaration {
///
/// Fields
///
private Class<?> clazz;
private TypeSolver typeSolver;
private ReflectionClassAdapter reflectionClassAdapter;
///
/// Constructors
///
public ReflectionEnumDeclaration(Class<?> clazz, TypeSolver typeSolver) {
if (clazz == null) {
throw new IllegalArgumentException("Class should not be null");
}
if (clazz.isInterface()) {
throw new IllegalArgumentException("Class should not be an interface");
}
if (clazz.isPrimitive()) {
throw new IllegalArgumentException("Class should not represent a primitive class");
}
if (clazz.isArray()) {
throw new IllegalArgumentException("Class should not be an array");
}
if (!clazz.isEnum()) {
throw new IllegalArgumentException("Class should be an enum");
}
this.clazz = clazz;
this.typeSolver = typeSolver;
this.reflectionClassAdapter = new ReflectionClassAdapter(clazz, typeSolver, this);
}
///
/// Public methods
///
@Override
public AccessSpecifier accessSpecifier() {
return ReflectionFactory.modifiersToAccessLevel(this.clazz.getModifiers());
}
@Override
public Optional<ResolvedReferenceTypeDeclaration> containerType() {
return reflectionClassAdapter.containerType();
}
@Override
public String getPackageName() {
if (clazz.getPackage() != null) {
return clazz.getPackage().getName();
}
return null;
}
@Override
public String getClassName() {
String canonicalName = clazz.getCanonicalName();
if (canonicalName != null && getPackageName() != null) {
return canonicalName.substring(getPackageName().length() + 1, canonicalName.length());
}
return null;
}
@Override
public String getQualifiedName() {
return clazz.getCanonicalName();
}
@Override
public List<ResolvedReferenceType> getAncestors() {
return reflectionClassAdapter.getAncestors();
}
@Override
public ResolvedFieldDeclaration getField(String name) {
return reflectionClassAdapter.getField(name);
}
@Override
public boolean hasField(String name) {
return reflectionClassAdapter.hasField(name);
}
@Override
public List<ResolvedFieldDeclaration> getAllFields() {
return reflectionClassAdapter.getAllFields();
}
@Override
public Set<ResolvedMethodDeclaration> getDeclaredMethods() {
return reflectionClassAdapter.getDeclaredMethods();
}
@Override
public boolean isAssignableBy(ResolvedType type) {
return reflectionClassAdapter.isAssignableBy(type);
}
@Override
public boolean isAssignableBy(ResolvedReferenceTypeDeclaration other) {
return isAssignableBy(new ReferenceTypeImpl(other, typeSolver));
}
@Override
public boolean hasDirectlyAnnotation(String qualifiedName) {
return reflectionClassAdapter.hasDirectlyAnnotation(qualifiedName);
}
@Override
public String getName() {
return clazz.getSimpleName();
}
@Override
public List<ResolvedTypeParameterDeclaration> getTypeParameters() {
return reflectionClassAdapter.getTypeParameters();
}
public SymbolReference<ResolvedMethodDeclaration> solveMethod(String name, List<ResolvedType> parameterTypes, boolean staticOnly) {
return ReflectionMethodResolutionLogic.solveMethod(name, parameterTypes, staticOnly,
typeSolver,this, clazz);
}
public Optional<MethodUsage> solveMethodAsUsage(String name, List<ResolvedType> parameterTypes, TypeSolver typeSolver,
Context invokationContext, List<ResolvedType> typeParameterValues) {
Optional<MethodUsage> res = ReflectionMethodResolutionLogic.solveMethodAsUsage(name, parameterTypes, typeSolver, invokationContext,
typeParameterValues, this, clazz);
if (res.isPresent()) {
// We have to replace method type typeParametersValues here
InferenceContext inferenceContext = new InferenceContext(MyObjectProvider.INSTANCE);
MethodUsage methodUsage = res.get();
int i = 0;
List<ResolvedType> parameters = new LinkedList<>();
for (ResolvedType actualType : parameterTypes) {
ResolvedType formalType = methodUsage.getParamType(i);
// We need to replace the class type typeParametersValues (while we derive the method ones)
parameters.add(inferenceContext.addPair(formalType, actualType));
i++;
}
try {
ResolvedType returnType = inferenceContext.addSingle(methodUsage.returnType());
for (int j=0;j<parameters.size();j++) {
methodUsage = methodUsage.replaceParamType(j, inferenceContext.resolve(parameters.get(j)));
}
methodUsage = methodUsage.replaceReturnType(inferenceContext.resolve(returnType));
return Optional.of(methodUsage);
} catch (ConfilictingGenericTypesException e) {
return Optional.empty();
}
} else {
return res;
}
}
@Override
public List<ResolvedEnumConstantDeclaration> getEnumConstants() {
return Arrays.stream(clazz.getFields())
.filter(f -> f.isEnumConstant())
.map(c -> new ReflectionEnumConstantDeclaration(c, typeSolver))
.collect(Collectors.toList());
}
}
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