protected override DObject EnsureItemIsObjectOverride(object key, ScriptContext /*!*/ context)
{
IntStringKey array_key;
if (!Convert.ObjectToArrayKey(key, out array_key))
{
PhpException.IllegalOffsetType();
context.AbortSetterChain(true);
return(null);
}
// extend the setter chain if one already exists
context.ExtendSetterChain(new RuntimeChainItem(array_key));
return(ScriptContext.SetterChainSingletonObject);
}
protected override void SetArrayItemOverride(object key, object value)
{
IntStringKey array_key;
ScriptContext context = ScriptContext.CurrentContext; // TODO: context -> field
// extend and finish the setter chain if one already exists
if (!Convert.ObjectToArrayKey(key, out array_key))
{
PhpException.IllegalOffsetType();
context.AbortSetterChain(true);
return;
}
context.ExtendSetterChain(new RuntimeChainItem(array_key));
context.FinishSetterChain(value);
return;
}
protected override PhpArray EnsureItemIsArrayOverride(object key)
{
ScriptContext context = ScriptContext.CurrentContext;
IntStringKey array_key;
if (!Convert.ObjectToArrayKey(key, out array_key))
{
PhpException.IllegalOffsetType();
context.AbortSetterChain(true);
return(null);
}
// extend the setter chain if one already exists:
context.ExtendSetterChain(new RuntimeChainItem(array_key));
return(this);
}
public static DObject EnsurePropertyIsObject(DObject obj, string name, DTypeDesc caller,
ScriptContext context)
{
Debug.Assert(name != null);
if (ReferenceEquals(obj, ScriptContext.SetterChainSingletonObject))
{
// extend the setter chain if one already exists
context.ExtendSetterChain(new RuntimeChainProperty(name));
return ScriptContext.SetterChainSingletonObject;
}
// search in CT properties
DPropertyDesc property;
GetMemberResult get_res =
obj.TypeDesc.GetProperty(new VariableName(name), caller, out property);
if (get_res == GetMemberResult.BadVisibility)
{
DObject.ThrowPropertyVisibilityError(name, property, caller);
return null;
}
DObject ret_val;
object old_val, value;
// was a CT property found?
if (get_res == GetMemberResult.OK)
{
old_val = property.Get(obj);
value = old_val;
ret_val = EnsurePropertyIsObjectInternal(obj, name, caller, ref value, context);
if (!Object.ReferenceEquals(value, old_val)) property.Set(obj, value);
}
else
{
// search in RT fields
var namekey = new IntStringKey(name);
if (obj.RuntimeFields != null && obj.RuntimeFields.TryGetValue(namekey, out old_val))
{
//old_val = element.Value;
}
else
{
PhpReference reference = new PhpSmartReference();
reference.IsSet = false;
old_val = reference;
}
value = old_val;
ret_val = EnsurePropertyIsObjectInternal(obj, name, caller, ref value, context);
if (!Object.ReferenceEquals(value, old_val))
{
if (obj.RuntimeFields == null) obj.RuntimeFields = new PhpArray();
obj.RuntimeFields[name] = value;
}
}
return ret_val;
}
/// <summary>
/// Ensures that a property value is of <see cref="DObject"/> type.
/// </summary>
/// <param name="obj">The object whose property is to be checked.</param>
/// <param name="name">The property name.</param>
/// <param name="caller"><see cref="Type"/> of the object that request the operation.</param>
/// <param name="propValue">The property value (might get updated).</param>
/// <param name="context">The current <see cref="ScriptContext"/>.</param>
/// <returns>The new property value (dereferenced) or <B>null</B> if evaluation of this compound
/// statement should not proceed.</returns>
internal static DObject EnsurePropertyIsObjectInternal(DObject obj, string name, DTypeDesc caller, ref object propValue,
ScriptContext context)
{
DObject result;
PhpReference reference = propValue as PhpReference;
object value;
if (reference != null && !reference.IsSet)
{
// this CT property has been unset
if (obj.TypeDesc.GetMethod(Name.SpecialMethodNames.Set) != null &&
obj.TypeDesc.RealType.Namespace != null &&
obj.TypeDesc.RealType.Namespace.StartsWith(Namespaces.Library))
{
// create a chain of arguments to be passed to the setter
context.BeginSetterChain(obj);
context.ExtendSetterChain(new RuntimeChainProperty(name));
return ScriptContext.SetterChainSingletonObject;
}
// try to invoke __get
bool getter_exists;
reference = obj.InvokeGetterRef(name, caller, out getter_exists);
if (!getter_exists)
{
result = stdClass.CreateDefaultObject(context);
propValue = new PhpReference(result);
return result;
}
else if (reference == null) return null; // error
value = reference.Value;
}
else value = PhpVariable.Dereference(propValue);
// if property value is a DObject, nothing has to be done
result = value as DObject;
if (result != null) return result;
// if the property is "empty"?
if (IsEmptyForEnsure(value))
{
// create a new stdClass and update the reference
result = stdClass.CreateDefaultObject(context);
if (reference != null)
{
reference.Value = result;
reference.IsSet = true;
}
else propValue = result;
return result;
}
// error - the property is a scalar or a PhpArray or a non-empty string
PhpException.VariableMisusedAsObject(value, false);
return null;
}
protected override DObject EnsureItemIsObjectOverride(object key, ScriptContext/*!*/ context)
{
IntStringKey array_key;
if (!Convert.ObjectToArrayKey(key, out array_key))
{
PhpException.IllegalOffsetType();
context.AbortSetterChain(true);
return null;
}
// extend the setter chain if one already exists
context.ExtendSetterChain(new RuntimeChainItem(array_key));
return ScriptContext.SetterChainSingletonObject;
}