/// <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);
        }
예제 #2
0
        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());
            bool useStatic   = false;
            bool useInstance = false;

            if (obj is Type)
            {
                useStatic = true;
                obj       = null;
            }
            else
            {
                useInstance = true;
            }

            renamer = renamer ?? StandardMemberRenamer.Default;

            var typeToImports = new Stack <Type>();

            while (typeInfo != null)
            {
                typeToImports.Push(typeInfo);
                if (typeInfo.BaseType == typeof(object))
                {
                    break;
                }

                typeInfo = typeInfo.BaseType;
            }

            var scriptObj = script as ScriptObject;

            while (typeToImports.Count > 0)
            {
                typeInfo = typeToImports.Pop();

                if ((flags & ScriptMemberImportFlags.Field) != 0)
                {
                    foreach (var field in typeInfo.GetFields(BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.DeclaredOnly))
                    {
                        if (!field.IsPublic || field.IsLiteral)
                        {
                            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
                            if (scriptObj == null)
                            {
                                script.TrySetValue(null, new SourceSpan(), newFieldName, field.GetValue(obj), field.IsInitOnly || field.IsLiteral);
                            }
                            else
                            {
                                scriptObj.SetValue(newFieldName, field.GetValue(obj), field.IsInitOnly || field.IsLiteral);
                            }
                        }
                    }
                }

                if ((flags & ScriptMemberImportFlags.Property) != 0)
                {
                    foreach (var property in typeInfo.GetProperties(BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.DeclaredOnly))
                    {
                        // Workaround with .NET Core, extension method is not working (retuning null despite doing property.GetMethod), so we need to inline it here
                        var getMethod = property.GetMethod;
                        if (!property.CanRead || !getMethod.IsPublic)
                        {
                            continue;
                        }

                        if (filter != null && !filter(property))
                        {
                            continue;
                        }

                        var keep = property.GetCustomAttribute <ScriptMemberIgnoreAttribute>() == null;
                        if (keep && (((getMethod.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);
                            if (scriptObj == null)
                            {
                                script.TrySetValue(null, new SourceSpan(), newPropertyName, property.GetValue(obj), false);
                            }
                            else
                            {
                                if (property.GetIndexParameters().Length == 0)
                                {
                                    scriptObj.SetValue(newPropertyName, property.GetValue(obj), false);
                                }
                            }
                        }
                    }
                }

                if ((flags & ScriptMemberImportFlags.Method) != 0 && useStatic)
                {
                    foreach (var method in typeInfo.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.DeclaredOnly))
                    {
                        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;
                            }

                            if (scriptObj == null)
                            {
                                script.TrySetValue(null, new SourceSpan(), newMethodName, DynamicCustomFunction.Create(obj, method), true);
                            }
                            else
                            {
                                scriptObj.SetValue(newMethodName, DynamicCustomFunction.Create(obj, method), true);
                            }
                        }
                    }
                }
            }
        }
예제 #3
0
        /// <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;
            bool useMethodInstance = false;

            if (obj is Type)
            {
                useStatic = true;
                obj       = null;
            }
            else
            {
                useInstance       = true;
                useMethodInstance = (flags & ScriptMemberImportFlags.MethodInstance) != 0;
            }

            renamer = renamer ?? StandardMemberRenamer.Default;

            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())
                {
                    if (!property.CanRead || !property.GetGetMethod().IsPublic)
                    {
                        continue;
                    }

                    if (filter != null && !filter(property))
                    {
                        continue;
                    }

                    var keep = property.GetCustomAttribute <ScriptMemberIgnoreAttribute>() == null;
                    if (keep && (((property.GetGetMethod().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 || useMethodInstance))
            {
                foreach (var method in typeInfo.GetDeclaredMethods())
                {
                    if (filter != null && !filter(method))
                    {
                        continue;
                    }

                    var keep = method.GetCustomAttribute <ScriptMemberIgnoreAttribute>() == null;
                    if (keep && method.IsPublic && ((useMethodInstance && !method.IsStatic) || (useStatic && 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);
                    }
                }
            }
        }