public static JsObject EvalFunctionInvoke(JsExpression x, Env env)
{
JsFunction func = x.value == "(" ?
(JsFunction)x.child[0].evaluate(env) :
(JsFunction)env.Find(x.value);
//add variable support,because var has child,so it can't be evaluated
var arguments = x.child.Skip(1).Select(item => item.evaluate(env)).ToArray();
return(func.UpdateArgs(arguments).evaluate());
}
public static JsObject EvalFunction(JsExpression x, Env env)
{
if (x.child.Count == 3)
{
string[] args = x.child[1].child.Select(i => i.value).ToArray();
JsFunction func = new JsFunction(args, x.child[2], new Env(env));
return(env.AddDef(x.child[0].value, func));
}
else
{
string[] args = x.child[0].child.Select(i => i.value).ToArray();
JsFunction func = new JsFunction(args, x.child[1], new Env(env));
return(func);
}
}
public static JsObject EvalPointExpression(JsExpression x, Env env)
{
JsObject obj = env.Find(x.child[0].value);//root obj
JsExpression exp = x.child[1];
if (exp.value == "=")
{
return(obj.AddDef(exp.child[0].value, exp.child[1].evaluate(obj.Scope)));
}
else
{
if (exp.value == "(")
{
JsFunction func = (JsFunction)obj.FindAttribute(exp.child[0].value);
var arguments = exp.child.Skip(1).Select(item => item.evaluate(env)).ToArray();
return(func.UpdateArgs(arguments).evaluate());
}
else
{
return(obj.FindAttribute(exp.value));
}
}
}