/// <summary>
/// Imports the delegate to the specified member.
/// </summary>
/// <param name="script">The script object to import into</param>
/// <param name="member">The member.</param>
/// <param name="function">The function delegate.</param>
/// <exception cref="System.ArgumentNullException">if member or function are null</exception>
public static void Import(this IScriptObject script, string member, Delegate function)
{
if (member == null)
{
throw new ArgumentNullException(nameof(member));
}
if (function == null)
{
throw new ArgumentNullException(nameof(function));
}
script.SetValue(null, new SourceSpan(), member, DynamicCustomFunction.Create(function.Target, function.GetMethodInfo()), true);
}
/// <summary>
/// Imports the specified object.
/// </summary>
/// <param name="script">The script object to import into</param>
/// <param name="obj">The object.</param>
/// <param name="flags">The import flags.</param>
/// <param name="filter">A filter applied on each member</param>
/// <param name="renamer">The member renamer.</param>
/// <exception cref="System.ArgumentOutOfRangeException"></exception>
public static void Import(this IScriptObject script, object obj, ScriptMemberImportFlags flags, MemberFilterDelegate filter = null, MemberRenamerDelegate renamer = null)
{
if (obj == null)
{
return;
}
if (!ScriptObject.IsImportable(obj))
{
throw new ArgumentOutOfRangeException(nameof(obj), $"Unsupported object type `{obj.GetType()}`. Expecting plain class or struct");
}
var typeInfo = (obj as Type ?? obj.GetType()).GetTypeInfo();
bool useStatic = false;
bool useInstance = false;
if (obj is Type)
{
useStatic = true;
obj = null;
}
else
{
useInstance = true;
}
renamer = renamer ?? StandardMemberRenamer.Default;
while (typeInfo != null)
{
if ((flags & ScriptMemberImportFlags.Field) != 0)
{
foreach (var field in typeInfo.GetDeclaredFields())
{
if (!field.IsPublic)
{
continue;
}
if (filter != null && !filter(field))
{
continue;
}
var keep = field.GetCustomAttribute <ScriptMemberIgnoreAttribute>() == null;
if (keep && ((field.IsStatic && useStatic) || useInstance))
{
var newFieldName = renamer(field);
if (String.IsNullOrEmpty(newFieldName))
{
newFieldName = field.Name;
}
// If field is init only or literal, it cannot be set back so we mark it as read-only
script.SetValue(null, new SourceSpan(), newFieldName, field.GetValue(obj), field.IsInitOnly || field.IsLiteral);
}
}
}
if ((flags & ScriptMemberImportFlags.Property) != 0)
{
foreach (var property in typeInfo.GetDeclaredProperties())
{
var methodInfoReadProperty = property.GetGetMethod();
if (methodInfoReadProperty is null)
{
continue;
}
if (!property.CanRead || !methodInfoReadProperty.IsPublic)
{
continue;
}
if (filter != null && !filter(property))
{
continue;
}
var keep = property.GetCustomAttribute <ScriptMemberIgnoreAttribute>() == null;
if (keep && (((methodInfoReadProperty.IsStatic && useStatic) || useInstance)))
{
var newPropertyName = renamer(property);
if (String.IsNullOrEmpty(newPropertyName))
{
newPropertyName = property.Name;
}
// Initially, we were setting readonly depending on the precense of a set method, but this is not compatible with liquid implems, so we remove readonly restriction
//script.SetValue(null, new SourceSpan(), newPropertyName, property.GetValue(obj), property.GetSetMethod() == null || !property.GetSetMethod().IsPublic);
script.SetValue(null, new SourceSpan(), newPropertyName, property.GetValue(obj), false);
}
}
}
if ((flags & ScriptMemberImportFlags.Method) != 0 && useStatic)
{
foreach (var method in typeInfo.GetDeclaredMethods())
{
if (filter != null && !filter(method))
{
continue;
}
var keep = method.GetCustomAttribute <ScriptMemberIgnoreAttribute>() == null;
if (keep && method.IsPublic && method.IsStatic && !method.IsSpecialName)
{
var newMethodName = renamer(method);
if (String.IsNullOrEmpty(newMethodName))
{
newMethodName = method.Name;
}
script.SetValue(null, new SourceSpan(), newMethodName, DynamicCustomFunction.Create(obj, method), true);
}
}
}
if (typeInfo.BaseType == typeof(object))
{
break;
}
typeInfo = typeInfo.BaseType.GetTypeInfo();
}
}
