private static PropertyBuilder CreateProperty(this TypeBuilder typeBuilder, EasyProperty property)
{
if (typeBuilder == null)
{
throw new ArgumentNullException(nameof(typeBuilder), "Type builder can't be null.");
}
MethodAttributes getSetAttr = MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig;
var fieldName = "_" + property.Name.Substring(0, 1).ToLowerInvariant() + property.Name.Substring(1);
FieldBuilder fieldBuilder = typeBuilder.DefineField(fieldName, property.Type, FieldAttributes.Private);
PropertyBuilder propertyBuilder =
typeBuilder.DefineProperty(property.Name, PropertyAttributes.HasDefault, property.Type, null);
MethodBuilder getterBuilder =
typeBuilder.DefineMethod($"get_{property.Name}", getSetAttr, property.Type, Type.EmptyTypes);
LoadIlToGetter(getterBuilder, fieldBuilder);
MethodBuilder setterBuilder =
typeBuilder.DefineMethod($"set_{property.Name}", getSetAttr, null, new[] { property.Type });
LoadIlToSetter(setterBuilder, fieldBuilder);
propertyBuilder.SetGetMethod(getterBuilder);
propertyBuilder.SetSetMethod(setterBuilder);
if (property.AttributeType != null)
{
var attrBuilder = GetAttributeBuilder(property.AttributeType, property.AttributeCtorParams);
propertyBuilder.SetCustomAttribute(attrBuilder);
}
return(propertyBuilder);
#region Local Functions
void LoadIlToGetter(MethodBuilder getterBldr, FieldBuilder fieldBldr)
{
ILGenerator getterGenerator = getterBldr.GetILGenerator();
getterGenerator.Emit(OpCodes.Ldarg_0);
getterGenerator.Emit(OpCodes.Ldfld, fieldBldr);
getterGenerator.Emit(OpCodes.Ret);
}
void LoadIlToSetter(MethodBuilder setterBldr, FieldBuilder fieldBldr)
{
ILGenerator setterGenerator = setterBldr.GetILGenerator();
setterGenerator.Emit(OpCodes.Ldarg_0);
setterGenerator.Emit(OpCodes.Ldarg_1);
setterGenerator.Emit(OpCodes.Stfld, fieldBldr);
setterGenerator.Emit(OpCodes.Ret);
}
#endregion
}
public static Type CreateType(string typeName, EasyProperty property)
{
var typeBuilder = GetTypeBuilder($"Assembly{_next}", $"Module{_next}", typeName);
typeBuilder.CreateProperty(property);
++_next;
return(typeBuilder.CreateType());
}
public static Type CreateType(string typeName, string assemblyName, string moduleName, EasyProperty property)
{
var typeBuilder = GetTypeBuilder(assemblyName, moduleName, typeName);
typeBuilder.CreateProperty(property);
++_next;
return(typeBuilder.CreateType());
}
