public override object VisitAssign([NotNull] TinyScriptParser.AssignContext context)
{
var type = (Type)VisitExpression(context.expression());
var name = context.Identifier().GetText();
Variable value;
if (_variables.TryGetValue(name, out value))
{
if (value.Value == null)
{
LocalBuilder variable;
if (value.Type == null)
{
variable = _builder.DeclareLocal(type);
value.Type = type;
}
else if (value.Type != type)
{
throw context.Exception("Cannot convert type [{0}] to [{1}].", type.Name, value.Type.Name);
}
else
{
variable = _builder.DeclareLocal(type);
}
value.Value = variable;
}
_builder.SetLocal(value.Value);
return(null);
}
throw context.Exception("Variable [{0}] not defined.", name);
}