net.sourceforge.plantuml.tim.stdlib.CallUserFunction Maven / Gradle / Ivy

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package net.sourceforge.plantuml.tim.stdlib;

import java.util.List;
import java.util.Map;
import java.util.Set;

import net.sourceforge.plantuml.text.StringLocated;
import net.sourceforge.plantuml.tim.EaterException;
import net.sourceforge.plantuml.tim.TContext;
import net.sourceforge.plantuml.tim.TFunction;
import net.sourceforge.plantuml.tim.TFunctionSignature;
import net.sourceforge.plantuml.tim.TMemory;
import net.sourceforge.plantuml.tim.expression.TValue;

public class CallUserFunction extends SimpleReturnFunction {

	public TFunctionSignature getSignature() {
		return new TFunctionSignature("%call_user_func", 1);
	}

	@Override
	public boolean canCover(int nbArg, Set namedArgument) {
		return nbArg > 0;
	}

	@Override
	public TValue executeReturnFunction(TContext context, TMemory memory, StringLocated location, List values,
			Map named) throws EaterException {
		final String fname = values.get(0).toString();
		final List args = values.subList(1, values.size());
		final TFunctionSignature signature = new TFunctionSignature(fname, args.size());
		final TFunction func = context.getFunctionSmart(signature);
		if (func == null)
			throw new EaterException("Cannot find void function " + fname, location);

		return func.executeReturnFunction(context, memory, location, args, named);
	}

}