RubyObject to SoyData

SoyUtils.java

package com.test;

import org.jruby.RubyHash.Visitor;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.RubyArray;
import org.jruby.RubyBignum;
import org.jruby.RubyBoolean;
import org.jruby.RubyFixnum;
import org.jruby.RubyFloat;
import org.jruby.RubyHash;
import org.jruby.RubyNil;
import org.jruby.RubyString;
import com.google.template.soy.data.*;
import com.google.template.soy.data.restricted.*;

public class SoyUtils {
	public static SoyData ConvertRubyObjectToSoyData(IRubyObject object) {
		SoyData data = null;
		if (object == null || object instanceof RubyNil) {
			data = NullData.INSTANCE;
		} else if (object instanceof RubyHash) {
			data = ConvertRubyHashToSoyData((RubyHash) object);
		} else if (object instanceof RubyArray) {
			data = ConvertRubyArrayToSoyData((RubyArray) object);
		} else {
			if (object instanceof RubyString) {
				String string = ((RubyString) object).asJavaString();
				data = new StringData(string);
			} else if (object instanceof RubyBoolean) {
				boolean bool = ((RubyBoolean) object).isTrue();
				data = new BooleanData(bool);
			} else if (object instanceof RubyFixnum) {
				long num_value = ((RubyFixnum) object).getLongValue();
				
				if (num_value >= Integer.MIN_VALUE || num_value <= Integer.MAX_VALUE) {
					data = new IntegerData((int) num_value);
				} else {
					data = new FloatData(num_value);
				}
			} else if (object instanceof RubyBignum) {
				double large = ((RubyBignum) object).getDoubleValue();
				data = new FloatData(large);
			} else if (object instanceof RubyFloat) {
				double floating = ((RubyFloat) object).getValue();
				data = new FloatData(floating);
			} else {
				Object unknown = object.toJava(Object.class);
				data = SoyData.createFromExistingData(unknown);
			}
		}

		return data;
	}

	public static SoyData ConvertRubyArrayToSoyData(RubyArray object) {
		SoyListData list = new SoyListData();

		for (long i = 0; i < object.getLength(); ++i) {
			IRubyObject item = object.eltOk(i);
			SoyData value = ConvertRubyObjectToSoyData(item);
			list.add(value);
		}

		return list;
	}

	public static SoyData ConvertRubyHashToSoyData(RubyHash object) {
		final SoyMapData root = new SoyMapData();

		object.visitAll(new Visitor() {
			public void visit(IRubyObject key, IRubyObject value) {
				String key_str = null;
				if (key instanceof RubyString) {
					key_str = ((RubyString) key).asJavaString();
				} else {
					throw new IllegalArgumentException("Key must be a string");
				}
				SoyData value_soy = ConvertRubyObjectToSoyData(value);
				root.put(key_str, value_soy);
			}
		});

		return root;

	}
}