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package protoj.lang.internal.sample.snippet;

import org.aspectj.tools.ant.taskdefs.AjcTask;

import protoj.lang.CompileFeature;
import protoj.lang.StandardProject;
import protoj.util.ArgRunnable;

/**
 * A code fragment used to demonstrate configuring a project to use aspectj.
 * 
 * @author Ashley Williams
 * 
 */
public final class UseCaseAspectj {
	/**
	 * Adds configuration to the specified project to enable both aspectj
	 * compilation and also load-time-weaving.
	 * 
	 * @param project
	 */
	public void addConfig(StandardProject project) {

		// 1. Enable the aspectj compiler.
		//
		// By default javac is configured so specifying true specifies that ajc
		// should be used instead. We also take the opportunity to configure
		// some of the ajc properties with hard-coded values. These values can
		// also be overridden with the system properties "protoj.compile.source"
		// and "protoj.compile.memory", so they server as global defaults

		project.getCompileFeature().initConfig(true,
				new ArgRunnable() {
					public void run(CompileFeature feature) {
						AjcTask compileTask = feature.getAjcCompileTask()
								.getCompileTask();
						compileTask.setMaxmem("16m");
						compileTask.setSource("1.5");
					}
				});

		// 2. Enable load-time-weaving.
		//
		// We are not forced to enabled load-time-weaving just because we are
		// using the aspectj compiler, but we choose to do so here. The null
		// argument signifies that the API should look for the default weaver
		// jar called "aspectjweaver.jar".

		project.getDispatchFeature().initLoadTimeWeaving(null);
	}
}