IsIterableExpTest.java

package com.hubspot.jinjava.lib.exptest;

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

@JinjavaDoc(
    value = "Return true if the object is iterable (sequence, dict, etc)",
    snippets = {
        @JinjavaSnippet(
            code = "{% if variable is iterable %}\n" +
                "       <!--code to render if items in a variable can be iterated through-->\n" +
                "{% endif %}")
    })
public class IsIterableExpTest implements ExpTest {

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

  @Override
  public boolean evaluate(Object var, JinjavaInterpreter interpreter, Object... args) {
    return var != null && (var.getClass().isArray() || Iterable.class.isAssignableFrom(var.getClass()));
  }

}