public void Convert()
{
while (index < tokens.Count)
{
if (TokenInitializer.IsNumber(Token))
{
result.Push(Token);
}
else if (TokenInitializer.IsOpenBracket(Token))
{
operators.Push(Token);
}
else if (TokenInitializer.IsOperator(Token))
{
PerformOperator();
}
else if (TokenInitializer.IsFunction(Token))
{
PerformFunction();
}
else if (TokenInitializer.IsCloseBracket(Token))
{
if (!PerformCloseBracket())
{
throw new InvalidBracketEcxeption();
}
}
else if (TokenInitializer.IsDelimeter(Token))
{
if (TokenInitializer.IsCorrectDelimeter(GetPrevNotSpace(), GetNextNotSpace()))
{
PerformDelimeter();
}
else
{
throw new DelimeterPositioningException();
}
}
else if (TokenInitializer.IsSpace(Token))
{
index++;
continue;
}
else
{
throw new InvalidTokenException(Token);
}
index++;
}
if (!IsExpressionParsed())
{
throw new InvalidBracketEcxeption();
}
ReverseResult();
}
private string GetPrevNotSpace()
{
for (int i = index - 1; i >= 0; i--)
{
if (!TokenInitializer.IsSpace(tokens[i]))
{
return(tokens[i]);
}
}
return("");
}
private string GetNextNotSpace()
{
for (int i = index + 1; i < tokens.Count; i++)
{
if (!TokenInitializer.IsSpace(tokens[i]))
{
return(tokens[i]);
}
}
return("");
}
private bool IsUnary()
{
var maybeUnary = Token == "-" || Token == "+";
var isOpenBracketPrev = TokenInitializer.IsOpenBracket(GetPrevNotSpace());
var isOpenBracketNext = TokenInitializer.IsOpenBracket(GetNextNotSpace());
var isNumberNext = TokenInitializer.IsNumber(GetNextNotSpace());
var isFunctionNext = TokenInitializer.IsFunction(GetNextNotSpace());
var isDelimeterPrev = TokenInitializer.IsDelimeter(GetPrevNotSpace());
if (maybeUnary && (isOpenBracketPrev || isDelimeterPrev) && (isNumberNext || isFunctionNext || isOpenBracketNext))
{
return(true);
}
return(false);
}