private void Categories_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
Search.Text = "";
var selected = Categories.SelectedItem as string;
VisibleConstants = ConstantDB?.GetCategory(selected);
}
public CalculatorEngine()
{
TrigonometryMode = TrigonometryMode.DEG;
ConstantDB = new ConstantDB();
_linebuffer = new StringBuilder();
_functioncache = new Dictionary <string, FunctionInformation>();
_preprocessor = new Preprocessor(_functioncache, ConstantDB);
var options = new Dictionary <string, object>();
options["DivisionOptions"] = PythonDivisionOptions.New;
_history = new ZeroStream();
_output = new EventRedirectedStreamWriter(_history);
_output.StreamWasWritten += _output_StreamWasWritten;
_engine = Python.CreateEngine(options);
_engine.Runtime.IO.SetOutput(_history, _output);
_engine.Runtime.IO.SetErrorOutput(_history, _output);
_scope = _engine.CreateScope();
_functionTypes = new Type[]
{
typeof(Trigonometry),
typeof(Engineering),
typeof(GeneralFunctions),
typeof(Variations),
typeof(TypeFunctions),
typeof(Statistics)
};
FunctionCache.Fill(ref _functioncache, ref _scope, _functionTypes);
}
private void TextBox_TextChanged(object sender, TextChangedEventArgs e)
{
if (string.IsNullOrEmpty(Search.Text))
{
ResetCategoryFiltering(ConstantDB);
}
else
{
VisibleConstants = ConstantDB.SearchByName(Search.Text);
}
}
/// <summary>
/// Pre process calculator raw input
/// </summary>
/// <param name="input">raw input</param>
/// <returns>executable python code</returns>
public string PreProcess(string input, bool multiline = false)
{
var lines = input.Split('\n');
var processed = new StringBuilder();
foreach (var line in lines)
{
if (ShouldSkip(line))
{
continue;
}
var parts = Regex.Split(line, @"(\+)|(\-)|(\*)|(\()|(\))|(\×)|(\×)|(\÷)|(\%)|(\,)|(\|AND\|)|(\|OR\|)|(\|NOT\|)|(\|XOR\|)|(\|SHL\|)|(\|SHR\|)");
string temp;
for (int i = 0; i < parts.Length; i++)
{
if (string.IsNullOrWhiteSpace(parts[i]))
{
continue;
}
if (!multiline)
{
parts[i] = parts[i].Trim();
}
if (parts[i] == "×")
{
parts[i] = "*";
}
else if (parts[i] == "÷")
{
parts[i] = "/";
}
else if (parts[i].StartsWith("&"))
{
parts[i] = ConstantDB.Lookup(parts[i]).ToString(CultureInfo.InvariantCulture);
}
else if (_functioncache.ContainsKey(parts[i]))
{
parts[i] = _functioncache[parts[i]];
}
else
{
var result = ParseNumber(out temp, parts[i]);
if (result)
{
parts[i] = temp;
}
}
}
for (int i = 0; i < parts.Length; i++)
{
if (string.IsNullOrWhiteSpace(parts[i]))
{
continue;
}
processed.Append(parts[i]);
if (i != (parts.Length - 1) && parts[i] != "(" && parts[i] != ")")
{
processed.Append(" ");
}
}
processed.Append("\n");
}
return(processed.ToString());
}
