com.github.dakusui.lisj.func.str.Format Maven / Gradle / Ivy

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package com.github.dakusui.lisj.func.str;

import org.apache.commons.lang3.ArrayUtils;

import com.github.dakusui.jcunit.core.Utils;
import com.github.dakusui.lisj.Context;
import com.github.dakusui.lisj.FormResult;
import com.github.dakusui.lisj.func.BaseFunc;

import static com.github.dakusui.lisj.Basic.*;

public class Format extends BaseFunc {
	/**
	 * Serial version UID.
	 */
	private static final long serialVersionUID = 8667048729923306190L;

	@Override
	protected FormResult evaluateLast(Context context, Object[] evaluatedParams, FormResult lastResult) {
		FormResult ret = lastResult;
		String format = evaluatedParams[0].toString();
		Object[] args   = null;
		if (evaluatedParams.length > 1) args = ArrayUtils.subarray(evaluatedParams, 1, evaluatedParams.length);
		ret.value(String.format(format, args != null ? args : new Object[]{}));
		return ret;
	}
	
	@Override
	protected Object checkParams(Object params) {
		super.checkParams(params);
		if (length(params) < 1) { throw new IllegalArgumentException(); }
		Utils.checknull(get(params,0));
		return params;
	}
}