public virtual Expression.EvalResult Run(MakeState s, List <Expression.EvalResult> passed_args)
{
MakeState new_s = s.Clone();
new_s.ClearLocalDefines();
for (int i = 0; i < args.Count; i++)
{
if (args[i].argtype == Expression.EvalResult.ResultType.Function)
{
FunctionStatement fs = new FunctionStatement();
var ofs = passed_args[i].funcval;
fs.name = args[i].name;
fs.args = ofs.args;
fs.code = ofs.code;
new_s.funcs[fs.Mangle()] = fs;
}
else
{
new_s.SetLocalDefine(args[i].name, passed_args[i]);
}
}
code.Execute(new_s);
if (new_s.returns != null)
{
return(new_s.returns);
}
return(new Expression.EvalResult());
}
public override Expression.EvalResult Execute(MakeState s)
{
Expression.EvalResult e = val.Evaluate(s);
if (tok_name is LabelExpression)
{
var tn = ((LabelExpression)tok_name).val;
s.SetLocalDefine(tn, e);
if (export)
{
ExportDef(tn, s);
}
}
else if (tok_name is LabelMemberExpression)
{
// left-most member must be a define
var lme = tok_name as LabelMemberExpression;
if (!(lme.label is LabelExpression))
{
throw new Exception("unable to assign to " + tok_name.ToString());
}
var o = s.GetDefine(((LabelExpression)lme.label).val);
// Now iterate through the various members, looking for
// what to set
Expression cur_member_lval = lme.member;
while (true)
{
if (cur_member_lval is LabelExpression)
{
// we've reached the end of the chain
break;
}
else if (cur_member_lval is LabelMemberExpression)
{
var new_lme = cur_member_lval as LabelMemberExpression;
if (!(new_lme.label is LabelExpression))
{
throw new Exception("unable to assign to " + tok_name.ToString());
}
lme = new_lme;
cur_member_lval = lme.member;
if (o.Type != Expression.EvalResult.ResultType.Object)
{
throw new Exception();
}
o = o.objval[((LabelExpression)lme.label).val];
}
else
{
throw new NotImplementedException();
}
}
string member_name = ((LabelExpression)cur_member_lval).val;
o.objval[member_name] = e;
}
else if (tok_name is LabelIndexedExpression)
{
var chain = get_chain(tok_name);
// left-most member must be a define
var lme = chain[0];
if (!(lme is LabelExpression))
{
throw new Exception("unable to assign to " + tok_name.ToString());
}
var o = s.GetDefine(((LabelExpression)lme).val);
// Now iterate through the various members, looking for
// what to set
o = follow_chain(o, chain, 1, chain.Count - 1, s);
if (o.Type != Expression.EvalResult.ResultType.Array)
{
throw new Exception("unable to assign to " + tok_name.ToString());
}
var idx = ((LabelIndexedExpression)tok_name).index.Evaluate(s).AsInt;
// increase the array size as appropriate
if (idx >= o.arrval.Count)
{
o.arrval.Capacity = (int)idx * 3 / 2;
while (idx >= o.arrval.Count)
{
o.arrval.Add(new Expression.EvalResult {
Type = Expression.EvalResult.ResultType.Null
});
}
}
o.arrval[(int)idx] = e;
}
else
{
throw new NotImplementedException();
}
return(new Expression.EvalResult(0));
}