Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.function.programming;

import java.util.ArrayList;

import java.util.Arrays;

import org.apache.commons.lang3.Range;

import static org.gvsig.expressionevaluator.ExpressionBuilder.FUNCTION_TUPLE;

import org.gvsig.expressionevaluator.Function;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractFunction;

import org.gvsig.tools.util.UnmodifiableBasicListAdapter;

public class TupleFunction extends AbstractFunction {

    public TupleFunction() {

        super(Function.GROUP_PROGRAMMING, 

                FUNCTION_TUPLE, 

                Range.between(0, Integer.MAX_VALUE),

                null,

                null,

                null,

                "UnmodifiableBasicList",

                false

        );

    }

    @Override

    public boolean allowConstantFolding() {

        return true;

    }

    @Override

    public Object call(Interpreter interpreter, Object[] args) throws Exception {

        ArrayList<Object> list = new ArrayList<>();

        list.addAll(Arrays.asList(args));

        return new UnmodifiableBasicListAdapter<>(list);

    }

}