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package com.dragome.compiler.units;

import java.io.IOException;
import java.io.Writer;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;

import com.dragome.compiler.type.Signature;
import com.dragome.compiler.utils.Log;

public abstract class ProcedureUnit extends MemberUnit
{

	private Collection targetSignatures= new LinkedHashSet();

	public ProcedureUnit(Signature theSignature, ClassUnit theDeclaringClazz)
	{
		super(theSignature, theDeclaringClazz);
	}

	public void addTarget(Signature targetSignature)
	{
		if (!targetSignature.toString().contains("#"))
		{
			throw new IllegalArgumentException("Signature must be field or method: " + targetSignature);
		}

		targetSignatures.add(targetSignature);
	}

	public void removeTargets()
	{
		Iterator iter= targetSignatures.iterator();
		while (iter.hasNext())
		{
			iter.next();
			iter.remove();
		}
	}

	public void write(int depth, Writer writer) throws IOException
	{
		if (getData() == null)
			return;
		Log.getLogger().debug(getIndent(depth) + getSignature());
		writer.write(getData());
	}

	public String getData()
	{
		if (!declaringClass.isResolved())
			throw new RuntimeException("Class must be resolved");
		return super.getData();
	}

	public Collection getTargetSignatures()
	{
		return targetSignatures;
	}

}