protected static bool IsWhiteSpace(PiToken piToken)
{
switch (piToken.Type)
{
case EPiToken.Whitespace:
case EPiToken.Tab:
case EPiToken.NewLine:
return(true);
}
return(false);
}
private bool ColorisePiToken(PiToken tok, Slice slice)
{
if (slice.Length < 0)
{
return(false);
}
bool Render(Color color) => SetPiSliceColor(slice, color, _defaultFont);
bool RenderBold(Color color) => SetPiSliceColor(slice, color, _boldFont);
switch (tok.Type)
{
case EPiToken.Assert:
return(RenderBold(Color.DarkMagenta));
// operators
case EPiToken.Plus:
case EPiToken.Minus:
case EPiToken.Multiply:
case EPiToken.Divide:
//case EPiToken.Modulo:
case EPiToken.And:
case EPiToken.Or:
case EPiToken.Xor:
case EPiToken.Equiv:
case EPiToken.GreaterEquiv:
case EPiToken.Less:
case EPiToken.LessEquiv:
return(Render(Color.SteelBlue));
case EPiToken.String:
// color the quotes too
var expanded = new Slice(slice.Lexer, slice.LineNumber, slice.Start - 1, slice.End + 1);
return(SetSliceColor(piInput, expanded, Color.Blue, _boldFont));
case EPiToken.Int:
return(Render(Color.Brown));
case EPiToken.Float:
return(Render(Color.Chocolate));
case EPiToken.Ident:
return(RenderBold(Color.DarkSlateBlue));
case EPiToken.Quote:
return(Render(Color.Gray));
case EPiToken.New:
case EPiToken.Delete:
case EPiToken.Swap:
case EPiToken.Drop:
case EPiToken.DropN:
case EPiToken.Depth:
case EPiToken.Clear:
case EPiToken.Rot:
case EPiToken.RotN:
case EPiToken.Expand:
case EPiToken.Size:
case EPiToken.Dup:
case EPiToken.GetType:
return(Render(Color.DarkOliveGreen));
case EPiToken.Comment:
return(Render(Color.Gray));
case EPiToken.ToList:
case EPiToken.ToArray:
case EPiToken.ToMap:
case EPiToken.ToSet:
return(Render(Color.DarkGreen));
default:
return(Render(DefaultForeColor));
}
}
