/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
string typename = TargetType.Execute(context)?.ToString();
if (typename == null)
{
throw new ScriptRuntimeException("cannot cast to null", this);
}
Type type = TypeProvider.DetermineType(this, typename);
object value = Value.Execute(context);
if (IsDynamic?.Execute(context)?.ToBoolean() ?? false)
{
if (value == null)
{
if (type.IsValueType)
{
return(Activator.CreateInstance(type));
}
return(null);
}
if (type.IsInstanceOfType(value))
{
return(value);
}
return(null);
}
if (value == null)
{
if (type.IsValueType)
{
throw new ScriptRuntimeException($"null cannot get cast to '{typename}'", this);
}
return(null);
}
if (!type.IsInstanceOfType(value))
{
throw new ScriptRuntimeException($"Unable to cast {value} to '{typename}'", this);
}
return(value);
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
string typename = Type.Execute(context)?.ToString();
if (typename == null)
{
throw new ScriptRuntimeException("Invalid parameter type specification", this);
}
bool isarray = typename.EndsWith("[]");
if (isarray)
{
typename = typename.Substring(0, typename.Length - 2);
}
Type type = TypeProvider.DetermineType(this, typename);
if (isarray)
{
type = typeof(IEnumerable <>).MakeGenericType(type);
}
object value;
if (context.Variables.ContainsVariable(Variable.Name) || (context.Arguments.ContainsVariable(Variable.Name)))
{
value = Variable.Execute(context);
}
else
{
if (DefaultValue != null)
{
value = DefaultValue.Execute(context);
}
else
{
throw new ScriptRuntimeException($"Variable {Variable.Name} not provided by script call and no default value provided", this);
}
}
if (value == null)
{
if (type.IsValueType)
{
throw new ScriptRuntimeException("Unable to pass null to a value parameter", this);
}
return(null);
}
if (!type.IsInstanceOfType(value))
{
try {
value = value = Converter.Convert(value, type);
}
catch (Exception e) {
throw new ScriptRuntimeException($"Unable to convert parameter '{value}' to '{typename}'", this, e);
}
}
((VariableProvider)context.Arguments).ReplaceVariable(Variable.Name, value);
return(value);
}
