AstCollectingVisitor.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 edu.umd.cs.findbugs.annotations.NonNull;
public class AstCollectingVisitor
extends NodeVisitorBase {
public static final String EOL = "\n";
@NonNull
protected StringBuilder output = new StringBuilder(); // NOPMD - intentional
protected int indent; // 0;
protected boolean eolPending; // false;
@NonNull
public static String asString(@NonNull Node node) {
AstCollectingVisitor visitor = new AstCollectingVisitor();
visitor.collect(node);
return visitor.getAst();
}
@SuppressWarnings("null")
@NonNull
public String getAst() {
return output.toString();
}
public void clear() {
output = new StringBuilder();
indent = 0;
eolPending = false;
}
protected void appendIndent() {
for (int i = 0; i < indent * 2; i++) {
output.append(' ');
}
eolPending = true;
}
protected void appendEOL() {
output.append(EOL);
eolPending = false;
}
protected void appendPendingEOL() {
if (eolPending) {
appendEOL();
}
}
public void collect(@NonNull Node node) {
visit(node);
}
@Override
protected void visit(Node node) {
assert node != null;
appendIndent();
node.astString(output, true);
output.append(EOL);
indent++;
try {
super.visitChildren(node);
} finally {
indent--;
}
}
}