package me.hammerle.snuviscript.instructions;

import me.hammerle.snuviscript.inputprovider.ReturnWrapper;
import me.hammerle.snuviscript.code.NamedFunction;
import me.hammerle.snuviscript.inputprovider.InputProvider;
import me.hammerle.snuviscript.code.Script;

public class Function extends Instruction {
    private final NamedFunction function;
    private final int arguments;
    private final ReturnWrapper wrapper = new ReturnWrapper();

    public Function(int line, int arguments, NamedFunction function) {
        super(line);
        this.function = function;
        this.arguments = arguments;
    }

    @Override
    public InputProvider execute(Script sc, InputProvider[] in) throws Exception {
        Object o = function.execute(sc, in);
        if(o == Void.TYPE || shouldNotReturnValue()) {
            return null;
        }
        wrapper.setValue(o);
        return wrapper;
    }

    @Override
    public int getArguments() {
        return arguments;
    }

    @Override
    public String toString() {
        return String.format("use %s(%d)", function.getName(), arguments);
    }

    @Override
    public String getName() {
        return function.getName();
    }
}