/// <summary>
/// Converts to database value.
/// </summary>
/// <param name="member">The member.</param>
/// <param name="value">The value.</param>
/// <returns>System.Object.</returns>
public object ConvertToDatabaseValue(DynamicMember member, object value)
{
if (value == null)
{
return(DBNull.Value);
}
if (member.Type == typeof(DateTime) && (DateTime)value == DateTime.MinValue || member.Type == typeof(DateTime?) && (DateTime)value == DateTime.MinValue)
{
return(new DateTime(1753, 01, 01));
// return (DateTime?)SqlDateTime.MinValue;
}
if (member.Type == typeof(byte[]))
{
return(value);
}
if (!member.Type.FullName.StartsWith("System.") || value is IEnumerable && member.Type != typeof(string) || value.GetType().IsCSharpClass()) // strings are enumerable of characters
{
var a = JsonConvert.SerializeObject(value);
if (a == null)
{
return(DBNull.Value);
}
return(a.Replace("'", "''"));
}
return(value);
}
/// <summary> Parameterizes a member from one object unto another.
/// If the name matches an existing parameter, the member will be added to that. </summary>
/// <param name="target"> The object on which to add a new member. </param>
/// <param name="member"> The member to forward. </param>
/// <param name="source"> The owner of the forwarded member. </param>
/// <param name="name"> The name of the new property. If null, the name of the source member will be used.</param>
/// <returns>The parameterization of the member..</returns>
public static ParameterMemberData Parameterize(this IMemberData member, object target, object source, string name)
{
if (member.GetParameter(target, source) != null)
{
throw new Exception("Member is already parameterized.");
}
return(DynamicMember.ParameterizeMember(target, member, source, name));
}
public void Intercept(DynamicMember parent, System.Reflection.Emit.MethodBuilder builder, System.Reflection.Emit.ILGenerator generator, ref Label returnLabel)
{
var prop = parent as DynamicProperty;
var hasMultipleValuesProperty = prop.DynamicTypeBuilder.DynamicMembers.OfType <DynamicProperty>().FirstOrDefault(p => p.MemberName == $"{prop.MemberName}_HasMultipleValues");
if (hasMultipleValuesProperty == null)
{
return;
}
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldc_I4_0);
generator.Emit(OpCodes.Call, hasMultipleValuesProperty.PropertySetMethod);
generator.Emit(OpCodes.Nop);
}
public void Intercept(DynamicMember parent, System.Reflection.Emit.MethodBuilder builder, System.Reflection.Emit.ILGenerator generator, ref Label returnLabel)
{
var prop = parent as DynamicProperty;
var originalReturn = returnLabel;
bool valueType = false;
var compareMethod = prop.MemberType.GetMethod("op_Equality", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public);
if (compareMethod == null)
{
compareMethod = typeof(object).GetMethod("Equals", BindingFlags.Static | BindingFlags.Public);
valueType = true;
}
generator.Emit(OpCodes.Nop);
generator.Emit(OpCodes.Ldarg_1);
if (valueType)
{
generator.Emit(OpCodes.Box, prop.MemberType);
}
if (!prop.IsOverride)
{
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldfld, prop.BackingField);
}
else
{
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Call, prop.PropertyGetMethod);
}
if (valueType)
{
generator.Emit(OpCodes.Box, prop.MemberType);
}
var endlabel = generator.DefineLabel();
generator.Emit(OpCodes.Call, compareMethod);
generator.Emit(OpCodes.Ldc_I4_0);
generator.Emit(OpCodes.Ceq);
generator.Emit(OpCodes.Brfalse_S, returnLabel);
generator.Emit(OpCodes.Br_S, endlabel);
returnLabel = generator.DefineLabel();
generator.MarkLabel(returnLabel);
var raiseMethod = prop.DynamicTypeBuilder.DynamicMembers
.OfType <RaisePropertyChangedMethod>()
.Select(p => p.Method)
.OfType <MethodInfo>()
.FirstOrDefault();
if (raiseMethod == null)
{
raiseMethod = prop.DynamicTypeBuilder.BaseType.GetMethod("OnPropertyChanged", BindingFlags.NonPublic | BindingFlags.Instance);
}
if (raiseMethod == null)
{
#if (SILVERLIGHT)
throw new MissingMemberException(string.Format("Missing Member {1} on type {0}", builder.DeclaringType.Name, "PropertyChanged"));
#else
throw new MissingMemberException(builder.DeclaringType.Name, "PropertyChanged");
#endif
}
generator.Emit(OpCodes.Nop);
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldstr, prop.MemberName);
generator.Emit(OpCodes.Callvirt, raiseMethod);
generator.Emit(OpCodes.Br_S, originalReturn);
generator.MarkLabel(endlabel);
}
/// <summary>
/// Dynamic member Assignment operator.
/// </summary>
/// <param name="DynamicMember">Dynamic member</param>
/// <param name="Operand">Operand.</param>
/// <param name="Start">Start position in script expression.</param>
/// <param name="Length">Length of expression covered by node.</param>
/// <param name="Expression">Expression containing script.</param>
public DynamicMemberAssignment(DynamicMember DynamicMember, ScriptNode Operand, int Start, int Length, Expression Expression)
: base(DynamicMember.LeftOperand, DynamicMember.RightOperand, Operand, Start, Length, Expression)
{
}
public BreakConditionDynamicMember(DynamicMember breakConditions) : base(breakConditions)
{
}
/// <summary> Removes a parameterization of a member. </summary>
/// <param name="parameterizedMember"> The parameterized member owned by the source. </param>
/// <param name="parameter"> The parameter to remove it from.</param>
/// <param name="source"> The source of the member. </param>
public static void Unparameterize(this IMemberData parameterizedMember, ParameterMemberData parameter, object source)
{
DynamicMember.UnparameterizeMember(parameter, parameterizedMember, source);
}
/// <summary> This overload allows two DynamicMembers to share the same Get/Set value backing field.</summary>
/// <param name="base"></param>
public DynamicMember(DynamicMember @base)
{
dict = @base.dict;
}
WriterDelegate WritePrimitiveElement(DynamicMember member, string name, object defaultValue, bool alwaysWrite)
{
if (alwaysWrite)
{
return (XElement result, ref object target) =>
{
object value = member.GetValue(target) ?? defaultValue ?? string.Empty;
result.Add(new XElement(name, value));
};
}
else
{
return (XElement result, ref object target) =>
{
object value = member.GetValue(target);
if (value != defaultValue)
result.Add(new XElement(name, value));
};
}
}
WriterDelegate WriteComplexElement(DynamicMember member, string name, object defaultValue, bool alwaysWrite)
{
EQXSerializer serializer = EQXSerializer.GetSerializer(member.MemberType);
if (alwaysWrite)
{
return (XElement result, ref object target) =>
{
object value = member.GetValue(target) ?? defaultValue;
if (value != null)
result.Add(serializer.Serialize(ref value, name));
else
result.Add(new XElement(name));
};
}
else
{
return (XElement result, ref object target) =>
{
object value = member.GetValue(target) ?? defaultValue;
if (value != null)
result.Add(new XElement(name));
};
}
}
WriterDelegate WriteArray(DynamicMember member, string name, string itemName, object defaultValue, bool alwaysWrite)
{
EQXSerializer serializer = EQXSerializer.GetSerializer(member.ArrayItemType);
if (!string.IsNullOrEmpty(itemName))
{
if (alwaysWrite)
{
return (XElement parent, ref object target) =>
{
XElement arrayElement = new XElement(name);
IList value = member.GetValue(target) as IList;
if (value != null && value.Count > 0)
{
for (int i = 0; i < value.Count; i++)
{
object itemValue = value[i];
arrayElement.Add(serializer.Serialize(ref itemValue, itemName));
}
parent.Add(arrayElement);
}
};
}
else
{
return (XElement parent, ref object target) =>
{
XElement arrayElement = new XElement(name);
IList value = member.GetValue(target) as IList;
if (value != null)
{
for (int i = 0; i < value.Count; i++)
{
object itemValue = value[i];
arrayElement.Add(serializer.Serialize(ref itemValue, itemName));
}
}
parent.Add(arrayElement);
};
}
}
else
{
// don't bother writing an empty element for flat arrays
return (XElement parent, ref object target) =>
{
IList value = member.GetValue(target) as IList;
if (value != null)
{
for (int i = 0; i < value.Count; i++)
{
object itemValue = value[i];
parent.Add(serializer.Serialize(ref itemValue, name));
}
}
};
}
}
ReaderDelegate ReadPrimitive(DynamicMember member, string name, object defaultValue)
{
return (XPathNavigator navigator, ref object target) =>
{
XPathNavigator datanav = navigator.SelectSingleNode(name);
if (datanav != null && !datanav.IsEmptyElement)
{
object value = null;
try { value = datanav.ValueAs(member.MemberType); }
catch (FormatException e)
{
// fixing sloppy dev typos, YAY!
if (member.MemberType == typeof(bool))
{
bool b;
if (bool.TryParse(datanav.Value.ToLower(), out b))
value = b;
else
value = false;
}
else if (member.MemberType == typeof(int))
{
string val = datanav.Value;
if (val.EndsWith("+"))
val = val.Replace("+", "");
int i;
if (int.TryParse(val, out i))
value = i;
else
value = 0;
}
else
throw e;
}
member.SetValue(ref target, value);
}
else if (defaultValue != null)
member.SetValue(ref target, defaultValue);
};
}
ReaderDelegate ReadComplex(DynamicMember member, string name, object defaultValue)
{
EQXSerializer serializer = EQXSerializer.GetSerializer(member.MemberType);
return (XPathNavigator navigator, ref object target) =>
{
XPathNavigator datanav = navigator.SelectSingleNode(name);
if (datanav != null && !datanav.IsEmptyElement)
{
object value = null;
serializer.Deserialize(datanav, ref value);
member.SetValue(ref target, value);
}
else if (defaultValue != null)
member.SetValue(ref target, defaultValue);
};
}
ReaderDelegate ReadArray(DynamicMember member, string name, string itemName, object defaultValue)
{
EQXSerializer serializer = EQXSerializer.GetSerializer(member.ArrayItemType);
if (!string.IsNullOrEmpty(itemName))
{
return (XPathNavigator navigator, ref object target) =>
{
XPathNodeIterator it = null;
XPathNavigator datanav = navigator.SelectSingleNode(name);
if (datanav != null && !datanav.IsEmptyElement)
it = datanav.Select(string.Concat("./", itemName));
if (it != null && it.Count > 0)
{
IList value = Activator.CreateInstance(member.MemberType, it.Count) as IList;
int i = 0;
while (it.MoveNext())
{
XPathNavigator itemnav = it.Current;
if (itemnav != null && !itemnav.IsEmptyElement)
{
object itemValue = null;
serializer.Deserialize(itemnav, ref itemValue);
value[i++] = itemValue;
}
}
member.SetValue(ref target, value);
}
else
member.SetValue(ref target, defaultValue);
};
}
return (XPathNavigator navigator, ref object target) =>
{
XPathNodeIterator it = null;
if (itemName == null)
it = navigator.Select("./" + name);
else
{
XPathNavigator datanav = navigator.SelectSingleNode(name);
if (datanav != null && !datanav.IsEmptyElement)
it = datanav.Select("./" + itemName);
}
if (it != null && it.Count > 0)
{
IList value = Activator.CreateInstance(member.MemberType, it.Count) as IList;
int i = 0;
while (it.MoveNext())
{
XPathNavigator itemnav = it.Current;
if (itemnav != null && !itemnav.IsEmptyElement)
{
object itemValue = null;
serializer.Deserialize(itemnav, ref itemValue);
value[i++] = itemValue;
}
}
member.SetValue(ref target, value);
}
};
}
