private bool ReadFunctionBody(StringReader p, bool reqName, out FunctionCode func)
{
var saved = p.Position;
if (p.ThisWord("function"))
{
var jsfn = new FunctionCode();
// esse Reader pode ser chamado para declaracao de funcoes ou para expressoes de funcoes anonimas
// reqName diferencia esses dois usos, um tem nome o outro nao
// ex.: function X(){} ou function(){}
if (reqName)
Expect(p, ReadIdent(p, out jsfn.Name), "func name");
ReqText(p, "(");
var plist = new List<string>();
string pn;
while (ReadIdent(p, out pn))
{
plist.Add(pn);
if (!p.ThisText(","))
break;
}
jsfn.Params = plist.Count > 0 ? plist.ToArray() : null;
ReqText(p, ")");
ReqText(p, "{");
ReadCodes(p, ref jsfn.Code);
ReqText(p, "}");
func = jsfn;
return true;
}
func = null;
return false;
}
private bool ReadClosure(StringReader p, out FunctionCode func)
{
var saved = p.Position;
var plist = new List<string>();
string pn;
if (p.ThisText("("))
{
while (ReadIdent(p, out pn))
{
plist.Add(pn);
if (!p.ThisText(","))
break;
}
if (!p.ThisText(")"))
goto Mistaken;
}
else if (ReadIdent(p, out pn))
plist.Add(pn);
if (p.ThisText(":"))
{
var jsfn = new FunctionCode();
jsfn.Params = plist.Count > 0 ? plist.ToArray() : null;
if (p.ThisText("{"))
{
ReadCodes(p, ref jsfn.Code);
ReqText(p, "}");
}
else
{
ExprPiece arg;
ReqVal(p, out arg);
AddCode(ref jsfn.Code, new ReturnCode { Arg = arg });
}
func = jsfn;
return true;
}
Mistaken:
p.Position = saved;
func = null;
return false;
}