private string printSValue(SValue re, ExecEnvironment env, int padding)
{
if (re is SList)
{
return("(" +
String.Join(" ",
from v in re.Get <List <SValue> >()
select printSValue(v.Evaluate(env), env, padding)) + ")");
}
else if (re is SDict)
{
return("\n" + "(".PadLeft(padding - 1) + "\n" + String.Join("\n",
re.Get <Dictionary <String, SValue> >().Select(kv =>
"".PadLeft(padding) + kv.Key + "=" + printSValue(kv.Value.Evaluate(env), env, padding + 2)
)) + "\n" + ")".PadLeft(padding - 1));
}
else if (re is SNull)
{
return("null");
}
else
{
return(String.Format("{0}", re.Underlying));
}
}
private SValue convert(SValue num)
{
if (num is SNumber)
{
var n = num.Get <Decimal>();
if (convertChr)
{
return(new SString(((char)n).ToString()));
}
else
{
return(new SString(n.ToString()));
}
}
else if (num is SBool)
{
return(new SString(num.Get <bool>().ToString()));
}
else if (num is SList)
{
return(new SList((num as SList).Get <List <SValue> >().Select(n => convert(n)).ToList()));
}
else
{
return(num);
}
}
private SValue convert(SValue str)
{
if (str is SString)
{
var s = str.Get <String>();
if (convertAsc && s.Length >= 1)
{
return(new SNumber(s[0]));
}
else
{
Decimal tmp;
if (Decimal.TryParse(s, out tmp))
{
return(new SNumber(tmp));
}
else
{
return(new SNull());
}
}
}
else if (str is SList)
{
return(new SList((str as SList).Get <List <SValue> >().Select(n => convert(n)).ToList()));
}
else
{
return(str);
}
}
public override SValue Evaluate(ExecEnvironment env)
{
SValue lenValue = argument.Evaluate(env);
if (lenValue is SString)
{
return(new SNumber(lenValue.Get <string>().Length));
}
else if (lenValue is SList)
{
return(new SNumber(lenValue.Get <List <SValue> >().Count));
}
else
{
return(new SNumber(0));
}
}
public override SValue Evaluate(ExecEnvironment env)
{
SValue lenValue = dict.Evaluate(env);
if (lenValue is SDict)
{
return(new SList((from k in lenValue.Get <Dictionary <string, SValue> >().Keys.ToList()
select(SValue) new SString(k)).ToList()));
}
else
{
throw new VMException("it only take a dict as the argument", headAtom);
}
}