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veraPDF PDF/A validation model implementation based on PDF parser.
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/**
 * This file is part of veraPDF Validation, a module of the veraPDF project.
 * Copyright (c) 2015, veraPDF Consortium 
 * All rights reserved.
 *
 * veraPDF Validation is free software: you can redistribute it and/or modify
 * it under the terms of either:
 *
 * The GNU General public license GPLv3+.
 * You should have received a copy of the GNU General Public License
 * along with veraPDF Validation as the LICENSE.GPL file in the root of the source
 * tree.  If not, see http://www.gnu.org/licenses/ or
 * https://www.gnu.org/licenses/gpl-3.0.en.html.
 *
 * The Mozilla Public License MPLv2+.
 * You should have received a copy of the Mozilla Public License along with
 * veraPDF Validation as the LICENSE.MPL file in the root of the source tree.
 * If a copy of the MPL was not distributed with this file, you can obtain one at
 * http://mozilla.org/MPL/2.0/.
 */
package org.verapdf.gf.model.impl.arlington;

import org.verapdf.cos.*;
import org.verapdf.model.alayer.*;
import org.verapdf.gf.model.impl.containers.StaticContainers;
import org.verapdf.tools.StaticResources;
import java.util.*;
import org.verapdf.pd.PDNameTreeNode;
import org.verapdf.as.ASAtom;
import java.util.stream.Collectors;
import org.verapdf.pd.structure.PDNumberTreeNode;

public class GFAAppearance extends GFAObject implements AAppearance {

	public GFAAppearance(COSBase baseObject, COSBase parentObject, String keyName) {
		super(baseObject, parentObject, keyName, "AAppearance");
	}

	@Override
	public List getLinkedObjects(String link) {
		switch (link) {
			case "D":
				return getD();
			case "N":
				return getN();
			case "R":
				return getR();
			default:
				return super.getLinkedObjects(link);
		}
	}

	private List getD() {
		switch (StaticContainers.getFlavour()) {
			case ARLINGTON1_2:
				return getD1_2();
			case ARLINGTON1_3:
			case ARLINGTON1_4:
			case ARLINGTON1_5:
			case ARLINGTON1_6:
			case ARLINGTON1_7:
			case ARLINGTON2_0:
				return getD1_3();
			default:
				return Collections.emptyList();
		}
	}

	private List getD1_2() {
		COSObject object = getDValue();
		if (object == null) {
			return Collections.emptyList();
		}
		if (object.getType() == COSObjType.COS_STREAM) {
			org.verapdf.model.baselayer.Object result = getDStream1_2(object.getDirectBase(), "D");
			List list = new ArrayList<>(1);
			if (result != null) {
				list.add(result);
			}
			return Collections.unmodifiableList(list);
		}
		return Collections.emptyList();
	}

	private org.verapdf.model.baselayer.Object getDStream1_2(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return null;
		}
		switch (subtypeValue) {
			case "Form":
				return new GFAXObjectFormType1(base, this.baseObject, keyName);
			case "PS":
				return getDStreamPS1_2(base, keyName);
			default:
				return null;
		}
	}

	private org.verapdf.model.baselayer.Object getDStreamPS1_2(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype2"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return new GFAXObjectFormPS(base, this.baseObject, keyName);
		}
		switch (subtypeValue) {
			case "PS":
				return new GFAXObjectFormPSpassthrough(base, this.baseObject, keyName);
			default:
				return null;
		}
	}

	private List getD1_3() {
		COSObject object = getDValue();
		if (object == null) {
			return Collections.emptyList();
		}
		if (object.getType() == COSObjType.COS_DICT) {
			List list = new ArrayList<>(1);
			list.add(new GFAAppearanceSubDict((COSDictionary)object.getDirectBase(), this.baseObject, "D"));
			return Collections.unmodifiableList(list);
		}
		if (object.getType() == COSObjType.COS_STREAM) {
			org.verapdf.model.baselayer.Object result = getDStream1_3(object.getDirectBase(), "D");
			List list = new ArrayList<>(1);
			if (result != null) {
				list.add(result);
			}
			return Collections.unmodifiableList(list);
		}
		return Collections.emptyList();
	}

	private org.verapdf.model.baselayer.Object getDStream1_3(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return null;
		}
		switch (subtypeValue) {
			case "Form":
				return new GFAXObjectFormType1(base, this.baseObject, keyName);
			case "PS":
				return getDStreamPS1_3(base, keyName);
			default:
				return null;
		}
	}

	private org.verapdf.model.baselayer.Object getDStreamPS1_3(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype2"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return new GFAXObjectFormPS(base, this.baseObject, keyName);
		}
		switch (subtypeValue) {
			case "PS":
				return new GFAXObjectFormPSpassthrough(base, this.baseObject, keyName);
			default:
				return null;
		}
	}

	private List getN() {
		switch (StaticContainers.getFlavour()) {
			case ARLINGTON1_2:
				return getN1_2();
			case ARLINGTON1_3:
			case ARLINGTON1_4:
			case ARLINGTON1_5:
			case ARLINGTON1_6:
			case ARLINGTON1_7:
			case ARLINGTON2_0:
				return getN1_3();
			default:
				return Collections.emptyList();
		}
	}

	private List getN1_2() {
		COSObject object = getNValue();
		if (object == null) {
			return Collections.emptyList();
		}
		if (object.getType() == COSObjType.COS_STREAM) {
			org.verapdf.model.baselayer.Object result = getNStream1_2(object.getDirectBase(), "N");
			List list = new ArrayList<>(1);
			if (result != null) {
				list.add(result);
			}
			return Collections.unmodifiableList(list);
		}
		return Collections.emptyList();
	}

	private org.verapdf.model.baselayer.Object getNStream1_2(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return null;
		}
		switch (subtypeValue) {
			case "Form":
				return new GFAXObjectFormType1(base, this.baseObject, keyName);
			case "PS":
				return getNStreamPS1_2(base, keyName);
			default:
				return null;
		}
	}

	private org.verapdf.model.baselayer.Object getNStreamPS1_2(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype2"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return new GFAXObjectFormPS(base, this.baseObject, keyName);
		}
		switch (subtypeValue) {
			case "PS":
				return new GFAXObjectFormPSpassthrough(base, this.baseObject, keyName);
			default:
				return null;
		}
	}

	private List getN1_3() {
		COSObject object = getNValue();
		if (object == null) {
			return Collections.emptyList();
		}
		if (object.getType() == COSObjType.COS_DICT) {
			List list = new ArrayList<>(1);
			list.add(new GFAAppearanceSubDict((COSDictionary)object.getDirectBase(), this.baseObject, "N"));
			return Collections.unmodifiableList(list);
		}
		if (object.getType() == COSObjType.COS_STREAM) {
			org.verapdf.model.baselayer.Object result = getNStream1_3(object.getDirectBase(), "N");
			List list = new ArrayList<>(1);
			if (result != null) {
				list.add(result);
			}
			return Collections.unmodifiableList(list);
		}
		return Collections.emptyList();
	}

	private org.verapdf.model.baselayer.Object getNStream1_3(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return null;
		}
		switch (subtypeValue) {
			case "Form":
				return new GFAXObjectFormType1(base, this.baseObject, keyName);
			case "PS":
				return getNStreamPS1_3(base, keyName);
			default:
				return null;
		}
	}

	private org.verapdf.model.baselayer.Object getNStreamPS1_3(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype2"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return new GFAXObjectFormPS(base, this.baseObject, keyName);
		}
		switch (subtypeValue) {
			case "PS":
				return new GFAXObjectFormPSpassthrough(base, this.baseObject, keyName);
			default:
				return null;
		}
	}

	private List getR() {
		switch (StaticContainers.getFlavour()) {
			case ARLINGTON1_2:
				return getR1_2();
			case ARLINGTON1_3:
			case ARLINGTON1_4:
			case ARLINGTON1_5:
			case ARLINGTON1_6:
			case ARLINGTON1_7:
			case ARLINGTON2_0:
				return getR1_3();
			default:
				return Collections.emptyList();
		}
	}

	private List getR1_2() {
		COSObject object = getRValue();
		if (object == null) {
			return Collections.emptyList();
		}
		if (object.getType() == COSObjType.COS_STREAM) {
			org.verapdf.model.baselayer.Object result = getRStream1_2(object.getDirectBase(), "R");
			List list = new ArrayList<>(1);
			if (result != null) {
				list.add(result);
			}
			return Collections.unmodifiableList(list);
		}
		return Collections.emptyList();
	}

	private org.verapdf.model.baselayer.Object getRStream1_2(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return null;
		}
		switch (subtypeValue) {
			case "Form":
				return new GFAXObjectFormType1(base, this.baseObject, keyName);
			case "PS":
				return getRStreamPS1_2(base, keyName);
			default:
				return null;
		}
	}

	private org.verapdf.model.baselayer.Object getRStreamPS1_2(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype2"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return new GFAXObjectFormPS(base, this.baseObject, keyName);
		}
		switch (subtypeValue) {
			case "PS":
				return new GFAXObjectFormPSpassthrough(base, this.baseObject, keyName);
			default:
				return null;
		}
	}

	private List getR1_3() {
		COSObject object = getRValue();
		if (object == null) {
			return Collections.emptyList();
		}
		if (object.getType() == COSObjType.COS_DICT) {
			List list = new ArrayList<>(1);
			list.add(new GFAAppearanceSubDict((COSDictionary)object.getDirectBase(), this.baseObject, "R"));
			return Collections.unmodifiableList(list);
		}
		if (object.getType() == COSObjType.COS_STREAM) {
			org.verapdf.model.baselayer.Object result = getRStream1_3(object.getDirectBase(), "R");
			List list = new ArrayList<>(1);
			if (result != null) {
				list.add(result);
			}
			return Collections.unmodifiableList(list);
		}
		return Collections.emptyList();
	}

	private org.verapdf.model.baselayer.Object getRStream1_3(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return null;
		}
		switch (subtypeValue) {
			case "Form":
				return new GFAXObjectFormType1(base, this.baseObject, keyName);
			case "PS":
				return getRStreamPS1_3(base, keyName);
			default:
				return null;
		}
	}

	private org.verapdf.model.baselayer.Object getRStreamPS1_3(COSBase base, String keyName) {
		COSObject subtype = base.getKey(ASAtom.getASAtom("Subtype2"));
		if (subtype == null) {
			return null;
		}
		String subtypeValue = subtype.getString();
		if (subtypeValue == null) {
			return new GFAXObjectFormPS(base, this.baseObject, keyName);
		}
		switch (subtypeValue) {
			case "PS":
				return new GFAXObjectFormPSpassthrough(base, this.baseObject, keyName);
			default:
				return null;
		}
	}

	@Override
	public Boolean getcontainsD() {
		return this.baseObject.knownKey(ASAtom.getASAtom("D"));
	}

	public COSObject getDValue() {
		COSObject object = this.baseObject.getKey(ASAtom.getASAtom("D"));
		return object;
	}

	@Override
	public Boolean getisDIndirect() {
		COSObject D = getDValue();
		return getisIndirect(D);
	}

	@Override
	public String getDType() {
		COSObject D = getDValue();
		return getObjectType(D);
	}

	@Override
	public Boolean getDHasTypeDictionary() {
		COSObject D = getDValue();
		return getHasTypeDictionary(D);
	}

	@Override
	public Boolean getDHasTypeStream() {
		COSObject D = getDValue();
		return getHasTypeStream(D);
	}

	@Override
	public Boolean getcontainsN() {
		return this.baseObject.knownKey(ASAtom.getASAtom("N"));
	}

	public COSObject getNValue() {
		COSObject object = this.baseObject.getKey(ASAtom.getASAtom("N"));
		return object;
	}

	@Override
	public Boolean getisNIndirect() {
		COSObject N = getNValue();
		return getisIndirect(N);
	}

	@Override
	public String getNType() {
		COSObject N = getNValue();
		return getObjectType(N);
	}

	@Override
	public Boolean getNHasTypeDictionary() {
		COSObject N = getNValue();
		return getHasTypeDictionary(N);
	}

	@Override
	public Boolean getNHasTypeStream() {
		COSObject N = getNValue();
		return getHasTypeStream(N);
	}

	@Override
	public Boolean getcontainsR() {
		return this.baseObject.knownKey(ASAtom.getASAtom("R"));
	}

	public COSObject getRValue() {
		COSObject object = this.baseObject.getKey(ASAtom.getASAtom("R"));
		return object;
	}

	@Override
	public Boolean getisRIndirect() {
		COSObject R = getRValue();
		return getisIndirect(R);
	}

	@Override
	public String getRType() {
		COSObject R = getRValue();
		return getObjectType(R);
	}

	@Override
	public Boolean getRHasTypeDictionary() {
		COSObject R = getRValue();
		return getHasTypeDictionary(R);
	}

	@Override
	public Boolean getRHasTypeStream() {
		COSObject R = getRValue();
		return getHasTypeStream(R);
	}

}