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package org.jruby.runtime.profile;

import org.jruby.internal.runtime.methods.DynamicMethod;

/**
 * Implementations of this interface will be used to enhance methods with profiling information/ callbacks.
 * TODO This can be moved, I think it's also useful outside the profile package.
 *
 * @author Andre Kullmann
 */
public interface MethodEnhancer {

    /**
     * Will be called with a method which should be enhanced.
     * e.g. with information or callback invocations required by the profiling.
     * In most cases you don't want to profile all methods, just the methods of your own code.
     * So you can add a simple filter here
     * <pre>
     * if( isMyCode( delegate ) ) {
     *     return new ProfilingDynamicMethod( delegate );
     * } else {
     *     return delegate;
     * }
     * </pre>
     * @param id the name of the given delegate
     * @param delegate the method to enhance
     * @return the enhanced method. if nothing is to be done, the delegate itself can be returned
     */
    public DynamicMethod enhance(String id, DynamicMethod delegate);
}
