InsertVisitor.java

/*
 * Portions of this software was developed by employees of the National Institute
 * of Standards and Technology (NIST), an agency of the Federal Government and is
 * being made available as a public service. Pursuant to title 17 United States
 * Code Section 105, works of NIST employees are not subject to copyright
 * protection in the United States. This software may be subject to foreign
 * copyright. Permission in the United States and in foreign countries, to the
 * extent that NIST may hold copyright, to use, copy, modify, create derivative
 * works, and distribute this software and its documentation without fee is hereby
 * granted on a non-exclusive basis, provided that this notice and disclaimer
 * of warranty appears in all copies.
 *
 * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
 * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
 * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
 * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
 * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
 * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
 * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
 * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
 * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
 * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
 * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
 */

package gov.nist.secauto.metaschema.core.datatype.markup.flexmark;

import com.vladsch.flexmark.util.ast.Node;
import com.vladsch.flexmark.util.ast.NodeVisitorBase;

import gov.nist.secauto.metaschema.core.datatype.markup.IMarkupString;
import gov.nist.secauto.metaschema.core.datatype.markup.flexmark.InsertAnchorExtension.InsertAnchorNode;

import java.util.LinkedList;
import java.util.List;
import java.util.function.Predicate;

import edu.umd.cs.findbugs.annotations.NonNull;

public class InsertVisitor
    extends NodeVisitorBase {
  @NonNull
  private final List<InsertAnchorNode> inserts
      = new LinkedList<>();
  @NonNull
  private final Predicate<InsertAnchorNode> filter;

  public InsertVisitor(
      @NonNull Predicate<InsertAnchorNode> filter) {
    this.filter = filter;
  }

  public InsertVisitor processNode(@NonNull IMarkupString<?> markup) {
    visit(markup.getDocument());
    return this;
  }

  @Override
  protected void visit(Node node) {
    if (node instanceof InsertAnchorNode) {
      InsertAnchorNode insert = (InsertAnchorNode) node;
      if (filter.test(insert)) {
        inserts.add((InsertAnchorNode) node);
      }
    } else {
      visitChildren(node);
    }
  }

  @NonNull
  public List<InsertAnchorNode> getInserts() {
    return inserts;
  }
}