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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.Node;
import com.github.javaparser.symbolsolver.core.resolution.Context;
import com.github.javaparser.symbolsolver.javaparsermodel.LambdaArgumentTypePlaceholder;
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.declarations.*;
import com.github.javaparser.symbolsolver.model.methods.MethodUsage;
import com.github.javaparser.symbolsolver.model.resolution.SymbolReference;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
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.reflect.Field;
import java.util.*;
import java.util.stream.Collectors;

/**
 * @author Federico Tomassetti
 */
public class ReflectionInterfaceDeclaration extends AbstractTypeDeclaration implements InterfaceDeclaration {

    ///
    /// Fields
    ///

    private Class clazz;
    private TypeSolver typeSolver;
    private ReflectionClassAdapter reflectionClassAdapter;

    ///
    /// Constructor
    ///

    public ReflectionInterfaceDeclaration(Class clazz, TypeSolver typeSolver) {
        if (!clazz.isInterface()) {
            throw new IllegalArgumentException();
        }

        this.clazz = clazz;
        this.typeSolver = typeSolver;
        this.reflectionClassAdapter = new ReflectionClassAdapter(clazz, typeSolver, this);
    }

    ///
    /// Public methods
    ///

    @Override
    public boolean isAssignableBy(ReferenceTypeDeclaration other) {
        return isAssignableBy(new ReferenceTypeImpl(other, typeSolver));
    }

    @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();
    }

    @Deprecated
    public SymbolReference solveMethod(String name, List parameterTypes, boolean staticOnly) {
        return ReflectionMethodResolutionLogic.solveMethod(name, parameterTypes, staticOnly,
                typeSolver,this, clazz);
    }

    @Override
    public String toString() {
        return "ReflectionInterfaceDeclaration{" +
                "clazz=" + clazz.getCanonicalName() +
                '}';
    }

    public Type getUsage(Node node) {
        return new ReferenceTypeImpl(this, typeSolver);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof ReflectionInterfaceDeclaration)) return false;

        ReflectionInterfaceDeclaration that = (ReflectionInterfaceDeclaration) o;

        if (!clazz.getCanonicalName().equals(that.clazz.getCanonicalName())) return false;

        if (!getTypeParameters().equals(that.getTypeParameters())) {
            return false;
        }

        return true;
    }

    @Override
    public int hashCode() {
        return clazz.hashCode();
    }

    public Optional solveMethodAsUsage(String name, List parameterTypes, TypeSolver typeSolver, Context invokationContext, List typeParameterValues) {
        Optional 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 parameters = new LinkedList<>();
            for (Type actualType : parameterTypes) {
                Type 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 {
                Type returnType = inferenceContext.addSingle(methodUsage.returnType());
                for (int j=0;j getAllFields() {
        return reflectionClassAdapter.getAllFields();
    }

    @Deprecated
    public SymbolReference solveSymbol(String name, TypeSolver typeSolver) {
        for (Field field : clazz.getFields()) {
            if (field.getName().equals(name)) {
                return SymbolReference.solved(new ReflectionFieldDeclaration(field, typeSolver));
            }
        }
        return SymbolReference.unsolved(ValueDeclaration.class);
    }

    @Override
    public List getAncestors() {
        return reflectionClassAdapter.getAncestors();
    }

    @Override
    public Set getDeclaredMethods() {
        return reflectionClassAdapter.getDeclaredMethods();
    }

    @Override
    public boolean hasField(String name) {
        return reflectionClassAdapter.hasField(name);
    }

    @Override
    public String getName() {
        return clazz.getSimpleName();
    }

    @Override
    public boolean isInterface() {
        return true;
    }

    @Override
    public List getInterfacesExtended() {
        List res = new ArrayList<>();
        for (Class i : clazz.getInterfaces()) {
            res.add(new ReferenceTypeImpl(new ReflectionInterfaceDeclaration(i, typeSolver), typeSolver));
        }
        return res;
    }
    
    @Override
    public Optional containerType() {
        return reflectionClassAdapter.containerType();
    }

    @Override
    public Set internalTypes() {
        return Arrays.stream(this.clazz.getDeclaredClasses())
                .map(ic -> ReflectionFactory.typeDeclarationFor(ic, typeSolver))
                .collect(Collectors.toSet());
    }

    @Override
    public InterfaceDeclaration asInterface() {
        return this;
    }

    @Override
    public boolean hasDirectlyAnnotation(String canonicalName) {
        return reflectionClassAdapter.hasDirectlyAnnotation(canonicalName);
    }

    @Override
    public List getTypeParameters() {
        return reflectionClassAdapter.getTypeParameters();
    }

    @Override
    public AccessLevel accessLevel() {
        return ReflectionFactory.modifiersToAccessLevel(this.clazz.getModifiers());
    }
}




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