public ParamDef(string name, ParamDefKind kind, Optional <Expr> defaultValue = default(Optional <Expr>), Optional <Expr> type = default(Optional <Expr>))
{
this.Name = name;
this.Kind = kind;
this.DefaultValue = defaultValue;
this.Type = type;
}
private ParamDef VisitParamDef(RobootGrammarParser.Fundef_argContext e)
{
int pos = 0;
ParamDefKind kind = ParamDefKind.positional;
Optional <Expr> type = Optional <Expr> .None();
Optional <Expr> defaultValue = Optional <Expr> .None();
string name;
if (e.children[0].GetText() == "~")
{
pos++;
kind = ParamDefKind.named;
}
if (e.children[0].GetText() == "~~")
{
pos++;
kind = ParamDefKind.implicit_;
}
if (e.children[pos].GetText() == "(")
{
name = e.children[pos + 1].GetText();
pos += 2;
if (e.children[pos].GetText() == ":")
{
type = Optional <Expr> .Some(Visit(e.children[pos + 1]));
pos += 2;
}
if (e.children[pos].GetText() == "=")
{
defaultValue = Optional <Expr> .Some(Visit(e.children[pos + 1]));
pos += 2;
}
}
else
{
name = e.children[pos].GetText();
}
return(new ParamDef(name, kind, defaultValue, type));
}
