PrintTag.java

package com.hubspot.jinjava.lib.tag;

import java.util.Objects;

import com.hubspot.jinjava.doc.annotations.JinjavaDoc;
import com.hubspot.jinjava.doc.annotations.JinjavaParam;
import com.hubspot.jinjava.doc.annotations.JinjavaSnippet;
import com.hubspot.jinjava.interpret.JinjavaInterpreter;
import com.hubspot.jinjava.tree.TagNode;

@JinjavaDoc(
    value = "Echos the result of the expression",
    params = @JinjavaParam(value = "expr", type = "expression", desc = "Expression to print"),
    snippets = {
        @JinjavaSnippet(
            code = "{% set string_to_echo = \"Print me\" %}\n" +
                "{% print string_to_echo %}")
    })
public class PrintTag implements Tag {

  private static final long serialVersionUID = -8613906103187594569L;

  @Override
  public String getName() {
    return "print";
  }

  @Override
  public String interpret(TagNode tagNode,
      JinjavaInterpreter interpreter) {
    return Objects.toString(interpreter.resolveELExpression(tagNode.getHelpers(), tagNode.getLineNumber()), "");
  }

  @Override
  public String getEndTagName() {
    return null;
  }

}