/// <summary>
/// Creates a new ThrowTypeErrorFunction instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="message"> The TypeError message. </param>
internal ThrowTypeErrorFunction(ObjectInstance prototype, string message)
: base(prototype)
{
this.FastSetProperty("length", 0);
this.IsExtensible = false;
this.message = message;
}
public void AddObject(string name, ObjectInstance obj)
{
if(name != null && obj != null)
{
engine.SetGlobalValue(name, obj);
}
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new DataView instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="buffer"> An existing ArrayBuffer to use as the storage for the new
/// DataView object. </param>
/// <param name="byteOffset"> The offset, in bytes, to the first byte in the specified
/// buffer for the new view to reference. If not specified, the view of the buffer will
/// start with the first byte. </param>
/// <param name="byteLength"> The number of elements in the byte array. If unspecified,
/// length of the view will match the buffer's length. </param>
internal DataViewInstance(ObjectInstance prototype, ArrayBufferInstance buffer, int byteOffset, int byteLength)
: base(prototype)
{
this.buffer = buffer;
this.byteOffset = byteOffset;
this.byteLength = byteLength;
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new JSON object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal JSONObject(ObjectInstance prototype)
: base(prototype)
{
var properties = GetDeclarativeProperties(Engine);
properties.Add(new PropertyNameAndValue(Engine.Symbol.ToStringTag, "JSON", PropertyAttributes.Configurable));
FastSetProperties(properties);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a function which calls a .NET method, with no name or length.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="call"> The delegate to call when calling the JS method. </param>
internal ClrStubFunction(ObjectInstance prototype, Func<ScriptEngine, object, object[], object> call)
: base(prototype)
{
// Let's not even bother with setting the name and length!
// Use sparingly.
this.callBinder = call;
}
/// <summary>
/// Initializes a new instance of the <see cref="LoaderInstance"/> class.
/// </summary>
/// <param name="prototype">The prototype.</param>
/// <param name="scriptRunner">The script runner.</param>
public LoaderInstance(ObjectInstance prototype, ScriptRunner scriptRunner)
: base(prototype)
{
this.scriptRunner = scriptRunner;
this.webClient = new WebClient();
this.PopulateFunctions();
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new instance of a built-in constructor function.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="name"> The name of the function. </param>
/// <param name="instancePrototype"> </param>
protected ClrFunction(ObjectInstance prototype, string name, ObjectInstance instancePrototype)
: base(prototype)
{
if (name == null)
throw new ArgumentNullException("name");
if (instancePrototype == null)
throw new ArgumentNullException("instancePrototype");
// This is a constructor so ignore the "this" parameter when the function is called.
thisBinding = this;
// Search through every method in this type looking for [JSCallFunction] and [JSConstructorFunction] attributes.
var callBinderMethods = new List<JSBinderMethod>(1);
var constructBinderMethods = new List<JSBinderMethod>(1);
var methods = this.GetType().GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static | BindingFlags.DeclaredOnly);
foreach (var method in methods)
{
// Search for the [JSCallFunction] and [JSConstructorFunction] attributes.
var callAttribute = (JSCallFunctionAttribute) Attribute.GetCustomAttribute(method, typeof(JSCallFunctionAttribute));
var constructorAttribute = (JSConstructorFunctionAttribute)Attribute.GetCustomAttribute(method, typeof(JSConstructorFunctionAttribute));
// Can't declare both attributes.
if (callAttribute != null && constructorAttribute != null)
throw new InvalidOperationException("Methods cannot be marked with both [JSCallFunction] and [JSConstructorFunction].");
if (callAttribute != null)
{
// Method is marked with [JSCallFunction]
callBinderMethods.Add(new JSBinderMethod(method, callAttribute.Flags));
}
else if (constructorAttribute != null)
{
var binderMethod = new JSBinderMethod(method, constructorAttribute.Flags);
constructBinderMethods.Add(binderMethod);
// Constructors must return ObjectInstance or a derived type.
if (typeof(ObjectInstance).IsAssignableFrom(binderMethod.ReturnType) == false)
throw new InvalidOperationException(string.Format("Constructors must return {0} (or a derived type).", typeof(ObjectInstance).Name));
}
}
// Initialize the Call function.
if (callBinderMethods.Count > 0)
this.callBinder = new JSBinder(callBinderMethods);
else
this.callBinder = new JSBinder(new JSBinderMethod(new Func<object>(() => Undefined.Value).Method));
// Initialize the Construct function.
if (constructBinderMethods.Count > 0)
this.constructBinder = new JSBinder(constructBinderMethods);
else
this.constructBinder = new JSBinder(new JSBinderMethod(new Func<ObjectInstance>(() => this.Engine.Object.Construct()).Method));
// Add function properties.
this.FastSetProperty("name", name);
this.FastSetProperty("length", this.callBinder.FunctionLength);
this.FastSetProperty("prototype", instancePrototype);
instancePrototype.FastSetProperty("constructor", this, PropertyAttributes.NonEnumerable);
}
/// <summary>
/// Creates a new ThrowTypeErrorFunction instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="message"> The TypeError message. </param>
internal ThrowTypeErrorFunction(ObjectInstance prototype, string message)
: base(prototype)
{
this.FastSetProperty("name", "ThrowTypeError", PropertyAttributes.Configurable);
this.FastSetProperty("length", 0, PropertyAttributes.Configurable);
this.IsExtensible = false;
this.message = message;
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new Object object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="instancePrototype"> The prototype for instances created by this function. </param>
internal ObjectConstructor(ObjectInstance prototype, ObjectInstance instancePrototype)
: base(prototype, __STUB__Construct, __STUB__Call)
{
// Initialize the constructor properties.
var properties = GetDeclarativeProperties(Engine);
InitializeConstructorProperties(properties, "Object", 1, instancePrototype);
FastSetProperties(properties);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new set iterator.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="set"> The set to iterate over. </param>
/// <param name="list"> The linked list to iterate over. </param>
/// <param name="kind"> The type of values to return. </param>
internal SetIterator(ObjectInstance prototype, SetInstance set, LinkedList<object> list, Kind kind)
: base(prototype)
{
this.set = set;
this.set.BeforeDelete += Set_BeforeDelete;
this.list = list;
this.kind = kind;
}
public XMLDocInstance(ObjectInstance prototype, string path)
: this(prototype)
{
_doc = new XmlDocument();
_path = path;
_doc.AppendChild(_doc.CreateXmlDeclaration("1.0", null, null));
_doc.AppendChild(_doc.CreateComment("Generated by Sphere SFML XML Content Serializer v1.0"));
}
/// <summary>
/// Initializes a new instance of the <see cref="JsEventObject"/> class.
/// </summary>
/// <param name="prototype">The prototype.</param>
/// <param name="runner">The runner.</param>
public JsEventObject(ObjectInstance prototype, ScriptRunner runner)
: base(prototype)
{
this.runner = runner;
this.events = new Dictionary<string, List<FunctionInstance>>();
PopulateFunctions(typeof(JsEventObject));
}
/// <summary>
/// Creates a new string instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="value"> The value to initialize the instance. </param>
public StringInstance(ObjectInstance prototype, string value)
: base(prototype)
{
if (value == null)
throw new ArgumentNullException("value");
this.value = value;
this.FastSetProperty("length", value.Length);
}
/// <summary>
/// Initializes the prototype properties.
/// </summary>
/// <param name="obj"> The object to set the properties on. </param>
/// <param name="constructor"> A reference to the constructor that owns the prototype. </param>
internal static void InitializePrototypeProperties(ObjectInstance obj, SymbolConstructor constructor)
{
var engine = obj.Engine;
var properties = GetDeclarativeProperties(engine);
properties.Add(new PropertyNameAndValue("constructor", constructor, PropertyAttributes.NonEnumerable));
properties.Add(new PropertyNameAndValue(engine.Symbol.ToStringTag, "Symbol", PropertyAttributes.Configurable));
obj.FastSetProperties(properties);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new map constructor.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal WeakMapConstructor(ObjectInstance prototype)
: base(prototype, __STUB__Construct, __STUB__Call)
{
// Initialize the constructor properties.
var properties = new List<PropertyNameAndValue>();
InitializeConstructorProperties(properties, "WeakMap", 0, WeakMapInstance.CreatePrototype(Engine, this));
FastSetProperties(properties);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new derived error function.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="type"> The type of error, e.g. Error, RangeError, etc. </param>
internal ErrorConstructor(ObjectInstance prototype, ErrorType type)
: base(prototype, __STUB__Construct, __STUB__Call)
{
// Initialize the constructor properties.
var properties = new List<PropertyNameAndValue>(3);
InitializeConstructorProperties(properties, type.ToString(), 1, ErrorInstance.CreatePrototype(Engine, this, type));
FastSetProperties(properties);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new Boolean object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal BooleanConstructor(ObjectInstance prototype)
: base(prototype, __STUB__Construct, __STUB__Call)
{
// Initialize the constructor properties.
var properties = new List<PropertyNameAndValue>(3);
InitializeConstructorProperties(properties, "Boolean", 1, BooleanInstance.CreatePrototype(Engine, this));
FastSetProperties(properties);
}
/// <summary>
/// Creates a new constructor function.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="construct"> The delegate to call when calling the JS method as a constructor. </param>
/// <param name="call"> The delegate to call when function is called. </param>
internal ClrStubFunction(ObjectInstance prototype,
Func<ScriptEngine, object, object[], ObjectInstance> construct,
Func<ScriptEngine, object, object[], object> call)
: base(prototype)
{
this.callBinder = call;
this.constructBinder = construct;
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new Error instance with the given name, message and optionally a stack trace.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="name"> The initial value of the name property. Pass <c>null</c> to avoid
/// creating this property. </param>
/// <param name="message"> The initial value of the message property. Pass <c>null</c> to
/// avoid creating this property. </param>
internal ErrorInstance(ObjectInstance prototype, string name, string message)
: base(prototype)
{
if (name != null)
this.FastSetProperty("name", name, PropertyAttributes.FullAccess);
if (message != null)
this.FastSetProperty("message", message, PropertyAttributes.FullAccess);
}
/// <summary>
/// Called by derived classes to create a new object instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. Cannot be <c>null</c>. </param>
protected ObjectInstance(ObjectInstance prototype)
{
if (prototype == null)
throw new ArgumentNullException("prototype");
this.prototype = prototype;
this.engine = prototype.Engine;
this.schema = this.engine.EmptySchema;
}
/// <summary>
/// Called by derived classes to create a new object instance.
/// </summary>
/// <param name="engine"> The script engine associated with this object. </param>
/// <param name="prototype"> The next object in the prototype chain. Can be <c>null</c>. </param>
protected ObjectInstance(ScriptEngine engine, ObjectInstance prototype)
{
if (engine == null)
throw new ArgumentNullException("engine");
this.engine = engine;
this.prototype = prototype;
this.schema = engine.EmptySchema;
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new map iterator.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="map"> The map to iterate over. </param>
/// <param name="list"> The linked list to iterate over. </param>
/// <param name="kind"> The type of values to return. </param>
internal MapIterator(ObjectInstance prototype, MapInstance map, LinkedList<KeyValuePair<object, object>> list, Kind kind)
: base(prototype)
{
this.map = map;
this.map.BeforeDelete += Map_BeforeDelete;
this.list = list;
this.kind = kind;
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new String object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal StringConstructor(ObjectInstance prototype)
: base(prototype, __STUB__Construct, __STUB__Call)
{
// Initialize the constructor properties.
var properties = GetDeclarativeProperties(Engine);
InitializeConstructorProperties(properties, "String", 1, StringInstance.CreatePrototype(Engine, this));
FastSetProperties(properties);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new RegExp object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal RegExpConstructor(ObjectInstance prototype)
: base(prototype, __STUB__Construct, __STUB__Call)
{
// Initialize the constructor properties.
var properties = GetDeclarativeProperties(Engine);
InitializeConstructorProperties(properties, "RegExp", 2, RegExpInstance.CreatePrototype(Engine, this));
AddDeprecatedProperties(properties);
FastSetProperties(properties);
}
public JSImageInstance(ObjectInstance prototype)
: base(prototype)
{
this["width"] = 0;
this["height"] = 0;
this.PopulateFunctions();
this.PopulateFields();
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new Global object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal GlobalObject(ObjectInstance prototype)
: base(prototype)
{
// Add the global constants.
// Infinity, NaN and undefined are read-only in ECMAScript 5.
this.FastSetProperty("Infinity", double.PositiveInfinity, PropertyAttributes.Sealed);
this.FastSetProperty("NaN", double.NaN, PropertyAttributes.Sealed);
this.FastSetProperty("undefined", Undefined.Value, PropertyAttributes.Sealed);
}
/// <summary>
/// Constructs the object's prototype, not bound to any context.
/// </summary>
/// <param name="nextPrototype">Prototype of the prototype</param>
/// <param name="extended">Whether extending a base object or not</param>
public ContextObjectInstance(ObjectInstance nextPrototype, bool extended)
: base(nextPrototype)
{
// This one derives from ObjectInstance directly, so this is not necessary:
// if (!extended) {
// Populate();
// }
// It's necessary in all other inherited objects, though.
}
/// <summary>
/// Initializes a new instance of the <see cref="ClientInstance"/> class.
/// </summary>
/// <param name="prototype">The prototype.</param>
/// <param name="runner">The runner.</param>
public ClientInstance(ObjectInstance prototype, ScriptRunner runner)
: base(prototype, runner)
{
client = new IrcClient();
client.Message += new EventHandler<IrcMessageEventArgs>(client_Message);
client.ChannelJoin += new EventHandler<IrcChannelEventArgs>(client_ChannelJoin);
client.Disconnect += new EventHandler<EventArgs>(client_Disconnect);
client.SslValidate += new EventHandler<SslValidateEventArgs>(client_SslValidate);
PopulateFunctions();
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new ThrowTypeErrorFunction instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal ThrowTypeErrorFunction(ObjectInstance prototype)
: base(prototype)
{
this.FastSetProperty("length", 0);
this.IsExtensible = false;
this.body = new FunctionDelegate((engine, scope, thisObject, functionObject, argumentValues) =>
{
throw new JavaScriptException(this.Engine, "TypeError", "It is illegal to access the 'callee' or 'caller' property in strict mode");
});
}
/// <summary>
/// Creates a new instance of a function which calls a .NET method.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="name"> The name of the function. </param>
/// <param name="length"> The "typical" number of arguments expected by the function. </param>
/// <param name="call"> The delegate to call when calling the JS method. </param>
public ClrStubFunction(ObjectInstance prototype, string name, int length, Func<ScriptEngine, object, object[], object> call)
: base(prototype)
{
this.callBinder = call;
// Set name and length properties.
var properties = new List<PropertyNameAndValue>(2);
properties.Add(new PropertyNameAndValue("name", name, PropertyAttributes.Configurable));
properties.Add(new PropertyNameAndValue("length", length, PropertyAttributes.Configurable));
FastSetProperties(properties);
}
public static T FromObject <T>(Jurassic.Library.ObjectInstance instance) where T : new()
{
if (instance == null)
{
return(default(T));
}
var ret = new T();
foreach (var pi in ret.GetType().GetProperties())
{
try
{
var value = instance.GetPropertyValue(JsonPropertyName(pi));
if (pi.PropertyType.IsPrimitive || pi.PropertyType == typeof(string))
{
pi.SetValue(ret, Convert.ChangeType(value, pi.PropertyType), null);
}
}
catch { }
}
return(ret);
}
public static ResultPerPageFree FromObjectInstance(Jurassic.Library.ObjectInstance instance)
{
/*为了简单，省去1万地反射...*/
var ret = new ResultPerPageFree();
foreach (var pi in ret.GetType().GetProperties())
{
try
{
var value = instance.GetPropertyValue(JsonPropertyName(pi));
if (pi.Name == "GroupsList")
{
var ls = value as ArrayInstance;
if (ls != null)
{
var wxGroups = (from ObjectInstance o in ls.ElementValues select FromObject <WxGroup>(o)).ToList();
pi.SetValue(ret, wxGroups, null);
}
}
else if (pi.Name == "FriendsList")
{
var ls = value as ArrayInstance;
if (ls != null)
{
var wxGroups = (from ObjectInstance o in ls.ElementValues select FromObject <WxUserFree>(o)).ToList();
pi.SetValue(ret, wxGroups, null);
}
}
else
{
pi.SetValue(ret, Convert.ChangeType(value, pi.PropertyType), null);
}
}
catch { }
}
return(ret);
}
/// <summary>
/// Creates a new ArrayBuffer instance from an existing buffer.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="buffer"> The buffer to use. </param>
private ArrayBufferInstance(ObjectInstance prototype, byte[] buffer)
: base(prototype)
{
this.buffer = buffer;
}
/// <summary>
/// Serializes an object into a JSON string.
/// </summary>
/// <param name="value"> The object to serialize. </param>
/// <param name="result"> The StringBuilder to write the JSON representation of the
/// object to. </param>
private void SerializeObject(ObjectInstance value, StringBuilder result)
{
// Add the spacer string to the current separator string.
string previousSeparator = this.separator;
this.separator += this.Indentation;
// Check for cyclical references.
if (this.objectStack.Contains(value) == true)
{
throw new JavaScriptException(this.engine, "TypeError", "The given object must not contain cyclical references");
}
this.objectStack.Push(value);
// Create a list of property names to serialize.
var propertiesToSerialize = this.SerializableProperties;
if (propertiesToSerialize == null)
{
propertiesToSerialize = new List <string>();
foreach (var property in value.Properties)
{
if (property.IsEnumerable == true)
{
propertiesToSerialize.Add(property.Name);
}
}
}
result.Append('{');
int serializedPropertyCount = 0;
foreach (string propertyName in propertiesToSerialize)
{
// Transform the value using the replacer function or toJSON().
object propertyValue = TransformPropertyValue(value, propertyName);
// Undefined values are not serialized.
if (propertyValue == null || propertyValue == Undefined.Value || propertyValue is FunctionInstance)
{
continue;
}
// Append the separator.
if (serializedPropertyCount > 0)
{
result.Append(',');
}
result.Append(this.separator);
// Append the property name and value to the result.
QuoteString(propertyName, result);
result.Append(':');
if (string.IsNullOrEmpty(this.Indentation) == false)
{
result.Append(' ');
}
SerializePropertyValue(propertyValue, result);
// Keep track of how many properties we have serialized.
serializedPropertyCount++;
}
if (serializedPropertyCount > 0)
{
result.Append(previousSeparator);
}
result.Append('}');
// Remove this object from the stack.
this.objectStack.Pop();
// Restore the separator to it's previous value.
this.separator = previousSeparator;
}
public bool Some(FunctionInstance callbackFunction, ObjectInstance context = null)
{
return(new TypedArrayAdapter(this).Some(callbackFunction, context));
}
public static ObjectInstance PreventExtensions(ObjectInstance obj)
{
obj.IsExtensible = false;
return(obj);
}
public static new bool IsExtensible(ObjectInstance obj)
{
return(obj.IsExtensible);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new instance of a built-in constructor function.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="name"> The name of the function. </param>
/// <param name="instancePrototype"> </param>
protected ClrFunction(ObjectInstance prototype, string name, ObjectInstance instancePrototype)
: base(prototype)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (instancePrototype == null)
{
throw new ArgumentNullException("instancePrototype");
}
// This is a constructor so ignore the "this" parameter when the function is called.
thisBinding = this;
// Search through every method in this type looking for [JSCallFunction] and [JSConstructorFunction] attributes.
var callBinderMethods = new List <JSBinderMethod>(1);
var constructBinderMethods = new List <JSBinderMethod>(1);
var methods = this.GetType().GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static | BindingFlags.DeclaredOnly);
foreach (var method in methods)
{
// Search for the [JSCallFunction] and [JSConstructorFunction] attributes.
var callAttribute = (JSCallFunctionAttribute)Attribute.GetCustomAttribute(method, typeof(JSCallFunctionAttribute));
var constructorAttribute = (JSConstructorFunctionAttribute)Attribute.GetCustomAttribute(method, typeof(JSConstructorFunctionAttribute));
// Can't declare both attributes.
if (callAttribute != null && constructorAttribute != null)
{
throw new InvalidOperationException("Methods cannot be marked with both [JSCallFunction] and [JSConstructorFunction].");
}
if (callAttribute != null)
{
// Method is marked with [JSCallFunction]
callBinderMethods.Add(new JSBinderMethod(method, callAttribute.Flags));
}
else if (constructorAttribute != null)
{
var binderMethod = new JSBinderMethod(method, constructorAttribute.Flags);
constructBinderMethods.Add(binderMethod);
// Constructors must return ObjectInstance or a derived type.
if (typeof(ObjectInstance).IsAssignableFrom(binderMethod.ReturnType) == false)
{
throw new InvalidOperationException(string.Format("Constructors must return {0} (or a derived type).", typeof(ObjectInstance).Name));
}
}
}
// Initialize the Call function.
if (callBinderMethods.Count > 0)
{
this.callBinder = new JSBinder(callBinderMethods);
}
else
{
this.callBinder = new JSBinder(new JSBinderMethod(new Func <object>(() => Undefined.Value).Method));
}
// Initialize the Construct function.
if (constructBinderMethods.Count > 0)
{
this.constructBinder = new JSBinder(constructBinderMethods);
}
else
{
this.constructBinder = new JSBinder(new JSBinderMethod(new Func <ObjectInstance>(() => this.Engine.Object.Construct()).Method));
}
// Add function properties.
this.FastSetProperty("name", name);
this.FastSetProperty("length", this.callBinder.FunctionLength);
this.FastSetProperty("prototype", instancePrototype);
instancePrototype.FastSetProperty("constructor", this, PropertyAttributes.NonEnumerable);
this.Engine.RegisterClrFunction(this);
}
/// <summary>
/// Creates a new instance of a built-in function object.
/// </summary>
/// <param name="engine"> The associated script engine. </param>
/// <param name="prototype"> The next object in the prototype chain. Can be <c>null</c>. </param>
protected FunctionInstance(ScriptEngine engine, ObjectInstance prototype)
: base(engine, prototype)
{
}
public int FindIndex(FunctionInstance callbackFunction, ObjectInstance context = null)
{
return(new TypedArrayAdapter(this).FindIndex(callbackFunction, context));
}
/// <summary>
/// Creates a new ArrayWrapper instance.
/// </summary>
/// <param name="wrappedInstance"> The array-like object that is being wrapped. </param>
/// <param name="length"> The number of elements in the array. </param>
protected ArrayAdapter(ObjectInstance wrappedInstance, int length)
{
this.wrappedInstance = wrappedInstance;
this.length = length;
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new Math object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal MathObject(ObjectInstance prototype)
: base(prototype)
{
}
public static string ToString(ObjectInstance thisObject)
{
return(string.Format("/{0}/{1}",
TypeConverter.ToString(thisObject["source"]),
TypeConverter.ToString(thisObject["flags"])));
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new string iterator.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="iteratedString"> The string to iterate over. </param>
internal StringIterator(ObjectInstance prototype, string iteratedString)
: base(prototype)
{
this.enumerator = StringInfo.GetTextElementEnumerator(iteratedString);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new ArrayBuffer instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="size"> The size, in bytes, of the array buffer to create. </param>
public ArrayBufferInstance(ObjectInstance prototype, int size)
: base(prototype)
{
this.buffer = new byte[size];
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new boolean instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="value"> The value to initialize the instance with. </param>
public BooleanInstance(ObjectInstance prototype, bool value)
: base(prototype)
{
this.value = value;
}
// OBJECT SERIALIZATION AND DESERIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a property descriptor from an object containing any of the following
/// properties: configurable, writable, enumerable, value, get, set.
/// </summary>
/// <param name="obj"> The object to get the property values from. </param>
/// <param name="defaults"> The values to use if the relevant value is not specified. </param>
/// <returns> A PropertyDescriptor that corresponds to the object. </returns>
public static PropertyDescriptor FromObject(ObjectInstance obj, PropertyDescriptor defaults)
{
if (obj == null)
{
return(PropertyDescriptor.Undefined);
}
// Read configurable attribute.
bool configurable = defaults.IsConfigurable;
if (obj.HasProperty("configurable"))
{
configurable = TypeConverter.ToBoolean(obj["configurable"]);
}
// Read writable attribute.
bool writable = defaults.IsWritable;
if (obj.HasProperty("writable"))
{
writable = TypeConverter.ToBoolean(obj["writable"]);
}
// Read enumerable attribute.
bool enumerable = defaults.IsEnumerable;
if (obj.HasProperty("enumerable"))
{
enumerable = TypeConverter.ToBoolean(obj["enumerable"]);
}
// Read property value.
object value = defaults.Value;
if (obj.HasProperty("value"))
{
value = obj["value"];
}
// The descriptor is an accessor if get or set is present.
bool isAccessor = false;
// Read get accessor.
FunctionInstance getter = defaults.Getter;
if (obj.HasProperty("get"))
{
if (obj.HasProperty("value"))
{
throw new JavaScriptException(obj.Engine, ErrorType.TypeError, "Property descriptors cannot have both 'get' and 'value' set");
}
if (obj.HasProperty("writable"))
{
throw new JavaScriptException(obj.Engine, ErrorType.TypeError, "Property descriptors with 'get' or 'set' defined must not have 'writable' set");
}
if (obj["get"] is FunctionInstance)
{
getter = (FunctionInstance)obj["get"];
}
else if (TypeUtilities.IsUndefined(obj["get"]) == true)
{
getter = null;
}
else
{
throw new JavaScriptException(obj.Engine, ErrorType.TypeError, "Property descriptor 'get' must be a function");
}
isAccessor = true;
}
// Read set accessor.
FunctionInstance setter = defaults.Setter;
if (obj.HasProperty("set"))
{
if (obj.HasProperty("value"))
{
throw new JavaScriptException(obj.Engine, ErrorType.TypeError, "Property descriptors cannot have both 'set' and 'value' set");
}
if (obj.HasProperty("writable"))
{
throw new JavaScriptException(obj.Engine, ErrorType.TypeError, "Property descriptors with 'get' or 'set' defined must not have 'writable' set");
}
if (obj["set"] is FunctionInstance)
{
setter = (FunctionInstance)obj["set"];
}
else if (TypeUtilities.IsUndefined(obj["set"]) == true)
{
setter = null;
}
else
{
throw new JavaScriptException(obj.Engine, ErrorType.TypeError, "Property descriptor 'set' must be a function");
}
isAccessor = true;
}
// Build up the attributes enum.
PropertyAttributes attributes = PropertyAttributes.Sealed;
if (configurable == true)
{
attributes |= PropertyAttributes.Configurable;
}
if (writable == true)
{
attributes |= PropertyAttributes.Writable;
}
if (enumerable == true)
{
attributes |= PropertyAttributes.Enumerable;
}
// Either a value or an accessor is possible.
object descriptorValue = value;
if (isAccessor == true)
{
descriptorValue = new PropertyAccessorValue(getter, setter);
}
// Create the new property descriptor.
return(new PropertyDescriptor(descriptorValue, attributes));
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new WeakMap instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
public WeakMapInstance(ObjectInstance prototype)
: base(prototype)
{
this.store = new ConditionalWeakTable <ObjectInstance, object>();
}
/// <summary>
/// Creates a new instance of a built-in function object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
protected FunctionInstance(ObjectInstance prototype)
: base(prototype)
{
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new RegExp object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal RegExpConstructor(ObjectInstance prototype)
: base(prototype, "RegExp", new RegExpInstance(prototype.Engine.Object.InstancePrototype, string.Empty))
{
this.InitializeDeprecatedProperties();
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new Number instance and initializes it to the given value.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="value"> The value to initialize to. </param>
public NumberInstance(ObjectInstance prototype, double value)
: base(prototype)
{
this.value = value;
}
public PromiseInstance Race(ObjectInstance iterable)
{
throw new NotImplementedException();
}
public ObjectInstance Construct()
{
return(ObjectInstance.CreateRawObject(this.InstancePrototype));
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new set instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal SetInstance(ObjectInstance prototype)
: base(prototype)
{
this.store = new Dictionary <object, LinkedListNode <object> >(new SameValueZeroComparer());
this.list = new LinkedList <object>();
}
// METHODS
//_________________________________________________________________________________________
/// <summary>
/// Populates the given object with properties, field and methods based on the given .NET
/// type.
/// </summary>
/// <param name="target"> The object to populate. </param>
/// <param name="type"> The .NET type to search for methods. </param>
/// <param name="flags"> <c>BindingFlags.Static</c> to populate static methods;
/// <c>BindingFlags.Instance</c> to populate instance methods. </param>
internal static void PopulateMembers(ObjectInstance target, Type type, BindingFlags flags)
{
// Register static methods as functions.
var methodGroups = new Dictionary <string, List <MethodBase> >();
foreach (var member in type.GetMembers(BindingFlags.Public | BindingFlags.DeclaredOnly | flags))
{
switch (member.MemberType)
{
case MemberTypes.Method:
MethodInfo method = (MethodInfo)member;
List <MethodBase> methodGroup;
if (methodGroups.TryGetValue(method.Name, out methodGroup) == true)
{
methodGroup.Add(method);
}
else
{
methodGroups.Add(method.Name, new List <MethodBase>()
{
method
});
}
break;
case MemberTypes.Property:
PropertyInfo property = (PropertyInfo)member;
var getMethod = property.GetGetMethod();
ClrFunction getter = getMethod == null ? null : new ClrFunction(target.Engine.Function.InstancePrototype, new ClrBinder(getMethod));
var setMethod = property.GetSetMethod();
ClrFunction setter = setMethod == null ? null : new ClrFunction(target.Engine.Function.InstancePrototype, new ClrBinder(setMethod));
target.DefineProperty(property.Name, new PropertyDescriptor(getter, setter, PropertyAttributes.NonEnumerable), false);
// Property getters and setters also show up as methods, so remove them here.
// NOTE: only works if properties are enumerated after methods.
if (getMethod != null)
{
methodGroups.Remove(getMethod.Name);
}
if (setMethod != null)
{
methodGroups.Remove(setMethod.Name);
}
break;
case MemberTypes.Field:
FieldInfo field = (FieldInfo)member;
ClrFunction fieldGetter = new ClrFunction(target.Engine.Function.InstancePrototype, new FieldGetterBinder(field));
ClrFunction fieldSetter = new ClrFunction(target.Engine.Function.InstancePrototype, new FieldSetterBinder(field));
target.DefineProperty(field.Name, new PropertyDescriptor(fieldGetter, fieldSetter, PropertyAttributes.NonEnumerable), false);
break;
case MemberTypes.Constructor:
case MemberTypes.NestedType:
case MemberTypes.Event:
case MemberTypes.TypeInfo:
// Support not yet implemented.
break;
}
}
foreach (var methodGroup in methodGroups.Values)
{
var binder = new ClrBinder(methodGroup);
var function = new ClrFunction(target.Engine.Function.InstancePrototype, binder);
target.FastSetProperty(binder.Name, function, PropertyAttributes.NonEnumerable, overwriteAttributes: true);
}
}
public TypedArrayInstance Map(FunctionInstance callbackFunction, ObjectInstance context = null)
{
return((TypedArrayInstance) new TypedArrayAdapter(this).Map(callbackFunction, context));
}
public PromiseInstance All(ObjectInstance iterable)
{
if (iterable == null)
{
throw new JavaScriptException(ErrorType.TypeError, "The parameter must be an iterable.");
}
var promises = TypeUtilities.ForOf(iterable.Engine, iterable).ToList();
var results = Engine.Array.Construct(new object[promises.Count]);
var count = promises.Count;
var promise = new PromiseInstance(iterable.Engine.Promise.InstancePrototype);
// The promise is resolved immediately if the iterable is empty.
if (promises.Count == 0)
{
promise.Resolve(results);
return(promise);
}
for (var i = 0; i < promises.Count; i++)
{
if (promise.State != PromiseState.Pending)
{
break;
}
if (promises[i] is PromiseInstance p)
{
if (p.State == PromiseState.Rejected)
{
promise.Reject(p.Result);
break;
}
else if (p.State == PromiseState.Fulfilled)
{
results[i] = p.Result;
if (--count == 0)
{
promise.Resolve(results);
break;
}
continue;
}
var j = i; // Some C# versions need this.
p.Then(new ClrStubFunction(Engine.FunctionInstancePrototype, "", 1, (engine, thisObj, args) =>
{
if (promise.State != PromiseState.Pending)
{
return(Undefined.Value);
}
results[j] = args[0];
if (--count == 0)
{
promise.Resolve(results);
}
return(Undefined.Value);
}),
new ClrStubFunction(Engine.FunctionInstancePrototype, "", 1, (engine, thisObj, args) =>
{
promise.Reject(args[0]);
return(Undefined.Value);
}));
continue;
}
else if (promises[i] is ObjectInstance obj && obj.HasProperty("then"))
{
FunctionInstance then;
try
{
then = obj.GetPropertyValue("then") as FunctionInstance;
}
catch (JavaScriptException jex)
{
promise.Reject(jex.GetErrorObject(Engine));
break;
}
if (then != null)
{
try
{
var j = i; // Some C# versions need this.
var resolve = new ClrStubFunction(iterable.Engine.Function.InstancePrototype, (engine, ths, arg) =>
{
if (promise.State != PromiseState.Pending)
{
return(Undefined.Value);
}
results[j] = arg.Length == 0
? Undefined.Value
: arg[0];
if (--count == 0)
{
promise.Resolve(results);
}
return(Undefined.Value);
});
then.Call(obj, resolve, promise.RejectFunction);
continue;
}
catch (JavaScriptException jex)
{
promise.Reject(jex.GetErrorObject(Engine));
break;
}
}
}
results[i] = promises[i];
if (--count == 0)
{
promise.Resolve(results);
break;
}
}
return(promise);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new symbol instance.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="symbol"> The symbol primitive. </param>
public SymbolInstance(ObjectInstance prototype, Symbol symbol)
: base(prototype)
{
this.symbol = symbol;
}
public void ForEach(FunctionInstance callbackFunction, ObjectInstance context = null)
{
new TypedArrayAdapter(this).ForEach(callbackFunction, context);
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new Global object.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
internal GlobalObject(ObjectInstance prototype)
: base(prototype)
{
}