private bool ColoriseRhoToken(RhoToken tok, Slice slice)
{
if (slice.Length < 0)
{
return(false);
}
bool Render(string color)
=> SetRhoSliceColor(slice, color, _defaultFont);
bool RenderBold(string color)
=> SetRhoSliceColor(slice, color, _boldFont);
var token = tok.Type;
switch (token)
{
case ERhoToken.Assert:
case ERhoToken.Fun:
case ERhoToken.Class:
case ERhoToken.Ident:
return(RenderBold(GetTokenColor(token)));
case ERhoToken.LessEquiv:
return(Render("#707070"));
case ERhoToken.String:
// color the quotes too
var expanded = new Slice(slice.Lexer, slice.LineNumber, slice.Start - 1, slice.End + 1);
return(SetRhoSliceColor(expanded, "#FFA500", _boldFont));
case ERhoToken.PiSlice:
var expanded2 = new Slice(slice.Lexer, slice.LineNumber, slice.Start - 1, slice.End + 1);
return(SetRhoSliceColor(expanded2, "#FFA5FF", _boldFont));
default:
return(Render(GetTokenColor(token)));
}
}
private bool ColoriseRhoToken(RhoToken tok, Slice slice)
{
if (slice.Length < 0)
{
return(false);
}
bool Render(Color color) => SetRhoSliceColor(slice, color, _defaultFont);
bool RenderBold(Color color) => SetRhoSliceColor(slice, color, _boldFont);
switch (tok.Type)
{
case ERhoToken.Assert:
return(RenderBold(Color.DarkMagenta));
case ERhoToken.Fun:
return(RenderBold(Color.Black));
case ERhoToken.Class:
return(RenderBold(Color.DarkSlateGray));
// operators
case ERhoToken.Plus:
case ERhoToken.Minus:
case ERhoToken.Multiply:
case ERhoToken.Divide:
//case ERhoToken.Modulo:
case ERhoToken.And:
case ERhoToken.Or:
case ERhoToken.Xor:
case ERhoToken.Equiv:
case ERhoToken.GreaterEquiv:
case ERhoToken.Less:
case ERhoToken.LessEquiv:
return(Render(Color.SteelBlue));
case ERhoToken.String:
// color the quotes too
var expanded = new Slice(slice.Lexer, slice.LineNumber, slice.Start - 1, slice.End + 1);
return(SetRhoSliceColor(expanded, Color.Blue, _boldFont));
case ERhoToken.Int:
return(Render(Color.Brown));
case ERhoToken.Float:
return(Render(Color.Chocolate));
case ERhoToken.Ident:
return(RenderBold(Color.DarkSlateBlue));
case ERhoToken.Quote:
return(Render(Color.Gray));
case ERhoToken.New:
case ERhoToken.Delete:
return(Render(Color.DarkOliveGreen));
case ERhoToken.Comment:
return(Render(Color.Gray));
default:
return(Render(DefaultForeColor));
}
}