net.amygdalum.util.text.linkeddawg.LinkedByteFallbackDawgCompiler Maven / Gradle / Ivy

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package net.amygdalum.util.text.linkeddawg;

import static net.amygdalum.util.text.ByteFallbackAdaptor.getFallback;
import static net.amygdalum.util.text.ByteFallbackAdaptor.setFallback;

import net.amygdalum.util.text.ByteDawg;
import net.amygdalum.util.text.ByteWordGraphCompiler;
import net.amygdalum.util.text.ByteNode;
import net.amygdalum.util.text.NodeResolver;

public class LinkedByteFallbackDawgCompiler implements ByteWordGraphCompiler> {

	@Override
	public ByteNode create() {
		return new ByteGenericFallbackNode<>();
	}

	@Override
	public ByteDawg build(ByteNode node) {
		return new LinkedByteFallbackDawg<>(node);
	}

	@Override
	public NodeResolver> resolver() {
		return new ByteNodesCompiler() {
			protected ByteNode compileNode(ByteNode node) {
				ByteNode optimizedNode = ByteTerminalFallbackNode.buildNodeFrom(node, this);
				if (optimizedNode != null) {
					return optimizedNode;
				}
				optimizedNode = ByteArrayFallbackNode.buildNodeFrom(node, this);
				if (optimizedNode != null) {
					return optimizedNode;
				}
				return null;
			}
			
			@Override
			public void link(ByteNode node) {
				ByteNode fallbackNode = getFallback(node);
				if (fallbackNode != null) {
					ByteNode compiledFallbackNode = resolve(fallbackNode);
					setFallback(node, compiledFallbackNode);
				}
			}

		};
	}

}