https://github.com/jruby/jruby/jruby-core: JRuby is the effort to recreate the Ruby (https://www.ruby-lang.org) interpreter in Java. (JRuby)
  • headius
  • enebo
  • wmeissner
  • BanzaiMan
  • mkristian 
package org.jruby.runtime.callsite;

import org.jruby.internal.runtime.methods.DynamicMethod;
import org.jruby.runtime.CallType;
import org.jruby.runtime.builtin.IRubyObject;

public class VariableCachingCallSite extends CachingCallSite {
    public VariableCachingCallSite(String methodName) {
        super(methodName, CallType.VARIABLE);
    }

    protected boolean methodMissing(DynamicMethod method, IRubyObject caller) {
        return method.isUndefined();
    }
}