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Copyright (C) 2013 Madis Pink Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Softwa...
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package com.madisp.bad.expr; /* w w w .jav a 2s . co m*/ import com.madisp.bad.eval.BadConverter; import com.madisp.bad.eval.Scope; import com.madisp.bad.eval.Watcher; /** * Created with IntelliJ IDEA. * User: madis * Date: 5/6/13 * Time: 2:32 PM */ public class UnaryMinusExpression implements Expression { private final Expression expr; public UnaryMinusExpression(Expression expr) { this.expr = expr; } @Override public Object value(Scope scope) { return -BadConverter.integer(expr.value(scope)); } @Override public void addWatcher(Scope scope, Watcher w) { expr.addWatcher(scope, w); } }