public StringBuilder SyntaxAnalysisInfixNotation(IMathMeta token, StringBuilder outputString, Stack <MathMetaBase> block)
{
if (token.IsNumber())
{
outputString.Append(token.ToString());
}
else if (token.IsFunction()
||
token.GetType().IsAssignableFrom(typeof(LeftParenthesis))
)
{
block.Push(token as MathMetaBase);
}
else if (token.GetType().IsAssignableFrom(typeof(RightParenthesis)))
{
string elem;
while ((elem = block.Pop().ToString()) != new LeftParenthesis().ToString())
{
outputString.Append(elem);
}
if (block.Count > 0 &&
block.Peek().IsFunction())
{
outputString.Append(block.Pop());
}
}
else
{
while (block.Count > 0
&&
(token as MathMetaBase) < block.Peek())
{
outputString.Append(block.Pop().ToString());
}
block.Push(token as MathMetaBase);
}
return(outputString);
}
public static bool Is(this IMathMeta meta, Type @interface)
{
return(@interface.IsAssignableFrom(meta.GetType()));
}
public static bool IsNumber(this IMathMeta meta)
{
return(typeof(NumberResult).IsAssignableFrom(meta.GetType()));
}