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package net.thisptr.jackson.jq.internal.functions;

import java.util.Collections;
import java.util.List;

import net.thisptr.jackson.jq.Function;
import net.thisptr.jackson.jq.JsonQuery;
import net.thisptr.jackson.jq.Scope;
import net.thisptr.jackson.jq.exception.JsonQueryException;
import net.thisptr.jackson.jq.internal.BuiltinFunction;
import net.thisptr.jackson.jq.internal.misc.Preconditions;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.JsonNodeType;

@BuiltinFunction("explode/0")
public class ExplodeFunction implements Function {
	@Override
	public List apply(final Scope scope, final List args, final JsonNode in) throws JsonQueryException {
		Preconditions.checkInputType("explode", in, JsonNodeType.STRING);

		final ArrayNode result = scope.getObjectMapper().createArrayNode();
		for (final char ch : in.asText().toCharArray())
			result.add((int) ch);
		return Collections. singletonList(result);
	}
}