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/*
 * Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.tools.xjc.model;

import jakarta.xml.bind.annotation.adapters.CollapsedStringAdapter;
import jakarta.xml.bind.annotation.adapters.NormalizedStringAdapter;
import jakarta.xml.bind.annotation.adapters.XmlAdapter;

import com.sun.codemodel.JClass;
import com.sun.tools.xjc.model.nav.EagerNClass;
import com.sun.tools.xjc.model.nav.NClass;
import com.sun.tools.xjc.model.nav.NType;
import com.sun.tools.xjc.model.nav.NavigatorImpl;
import com.sun.tools.xjc.outline.Aspect;
import com.sun.tools.xjc.outline.Outline;
import org.glassfish.jaxb.core.v2.model.core.Adapter;

/**
 * Extended {@link Adapter} for use within XJC.
 *
 * @author Kohsuke Kawaguchi
 */
public final class CAdapter extends Adapter {

    /**
     * If non-null, the same as {@link #adapterType} but more conveniently typed.
     */
    private JClass adapterClass1;

    /**
     * If non-null, the same as {@link #adapterType} but more conveniently typed.
     */
    private Class adapterClass2;

    /**
     * When the adapter class is statically known to us.
     *
     * @param copy
     *      true to copy the adapter class into the user package,
     *      or otherwise just refer to the class specified via the
     *      adapter parameter.
     */
    public CAdapter(Class adapter, boolean copy) {
        super(getRef(adapter,copy),NavigatorImpl.theInstance);
        this.adapterClass1 = null;
        this.adapterClass2 = adapter;
    }

    static NClass getRef( final Class adapter, boolean copy ) {
        if(copy) {
            // TODO: this is a hack. the code generation should be defered until
            // the backend. (right now constant generation happens in the front-end)
            return new EagerNClass(adapter) {
                @Override
                public JClass toType(Outline o, Aspect aspect) {
                    return o.addRuntime(adapter);
                }
                @Override
                public String fullName() {
                    // TODO: implement this method later
                    throw new UnsupportedOperationException();
                }
            };
        } else {
            return NavigatorImpl.theInstance.ref(adapter);
        }
    }

    public CAdapter(JClass adapter) {
        super( NavigatorImpl.theInstance.ref(adapter), NavigatorImpl.theInstance);
        this.adapterClass1 = adapter;
        this.adapterClass2 = null;
    }

    public JClass getAdapterClass(Outline o) {
        if(adapterClass1==null)
            adapterClass1 = o.getCodeModel().ref(adapterClass2);
        return adapterType.toType(o, Aspect.EXPOSED);
    }

    /**
     * Returns true if the adapter is for whitespace normalization.
     * Such an adapter can be ignored when producing a list.
     */
    public boolean isWhitespaceAdapter() {
        return adapterClass2==CollapsedStringAdapter.class || adapterClass2==NormalizedStringAdapter.class;
    }

    /**
     * Returns the adapter class if the adapter type is statically known to XJC.
     * 

* This method is mostly for enabling certain optimized code generation. */ public Class getAdapterIfKnown() { return adapterClass2; } }





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