private double CalculateString(string expression)
{
ExpressionLexer lexer = new ExpressionLexer(new StringReader(expression));
ExpressionCompiler compiler = new ExpressionCompiler(lexer);
return(compiler.GetExpression().Compile()());
}
static void Main(string[] args)
{
do
{
try
{
Console.Write("> ");
ExpressionLexer lexer = new ExpressionLexer(new StringReader(Console.ReadLine() ?? ""));
ExpressionCompiler compiler = new ExpressionCompiler(lexer);
var expression = compiler.GetExpression();
Console.WriteLine(expression);
Console.WriteLine($"= {expression.Compile()()}");
}
catch (FormatException e)
{
Console.WriteLine(e.Message);
}
} while (true);
}
