/// <summary>
/// Gets an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="source">The JavaScript value</param>
/// <param name="name">The name of the property</param>
/// <returns>The value of the property</returns>
public static JsValue GetProperty(this JsValue source, string name)
{
JsPropertyId id = JsPropertyId.FromString(name);
JsValue resultValue = source.GetProperty(id);
return(resultValue);
}
/// <summary>
/// Deletes an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="source">The JavaScript value</param>
/// <param name="propertyName">The name of the property</param>
/// <param name="useStrictRules">The property set should follow strict mode rules</param>
/// <returns>Whether the property was deleted</returns>
public static JsValue DeleteProperty(this JsValue source, string propertyName, bool useStrictRules)
{
JsPropertyId propertyId = JsPropertyId.FromString(propertyName);
JsValue resultValue = source.DeleteProperty(propertyId, useStrictRules);
return(resultValue);
}
/// <summary>
/// Defines a new object's own property from a property descriptor
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="source">The JavaScript value</param>
/// <param name="propertyName">The name of the property</param>
/// <param name="propertyDescriptor">The property descriptor</param>
/// <returns>Whether the property was defined</returns>
public static bool DefineProperty(this JsValue source, string propertyName, JsValue propertyDescriptor)
{
JsPropertyId propertyId = JsPropertyId.FromString(propertyName);
bool result = source.DefineProperty(propertyId, propertyDescriptor);
return(result);
}
/// <summary>
/// Gets a property descriptor for an object's own property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="source">The JavaScript value</param>
/// <param name="propertyName">The name of the property</param>
/// <returns>The property descriptor</returns>
public static JsValue GetOwnPropertyDescriptor(this JsValue source, string propertyName)
{
JsPropertyId propertyId = JsPropertyId.FromString(propertyName);
JsValue resultValue = source.GetOwnPropertyDescriptor(propertyId);
return(resultValue);
}
protected override bool InnerHasVariable(string variableName)
{
bool result = _dispatcher.Invoke(() =>
{
using (CreateJsScope())
{
try
{
JsValue globalObj = JsValue.GlobalObject;
JsPropertyId variableId = JsPropertyId.FromString(variableName);
bool variableExist = globalObj.HasProperty(variableId);
if (variableExist)
{
JsValue variableValue = globalObj.GetProperty(variableId);
variableExist = variableValue.ValueType != JsValueType.Undefined;
}
return(variableExist);
}
catch (OriginalException e)
{
throw WrapJsException(e);
}
}
});
return(result);
}
/// <summary>
/// Determines whether an object has a non-inherited property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="source">The JavaScript value</param>
/// <param name="propertyName">The name of the property</param>
/// <returns>Whether the object has the non-inherited property</returns>
public static bool HasOwnProperty(this JsValue source, string propertyName)
{
JsPropertyId propertyId = JsPropertyId.FromString(propertyName);
bool result = source.HasOwnProperty(propertyId);
return(result);
}
protected override object InnerCallFunction(string functionName, params object[] args)
{
object result = _dispatcher.Invoke(() =>
{
using (CreateJsScope())
{
try
{
JsValue globalObj = JsValue.GlobalObject;
JsPropertyId functionId = JsPropertyId.FromString(functionName);
bool functionExist = globalObj.HasProperty(functionId);
if (!functionExist)
{
throw new JsRuntimeException(
string.Format(CoreStrings.Runtime_FunctionNotExist, functionName));
}
JsValue resultValue;
JsValue functionValue = globalObj.GetProperty(functionId);
if (args.Length > 0)
{
JsValue[] processedArgs = MapToScriptType(args);
foreach (JsValue processedArg in processedArgs)
{
AddReferenceToValue(processedArg);
}
JsValue[] allProcessedArgs = new[] { globalObj }
.Concat(processedArgs)
.ToArray()
;
resultValue = functionValue.CallFunction(allProcessedArgs);
foreach (JsValue processedArg in processedArgs)
{
RemoveReferenceToValue(processedArg);
}
}
else
{
resultValue = functionValue.CallFunction(globalObj);
}
return(MapToHostType(resultValue));
}
catch (OriginalJsException e)
{
throw ConvertJsExceptionToJsRuntimeException(e);
}
}
});
return(result);
}
/// <summary>
/// Makes a mapping of value from the script type to a host type
/// </summary>
/// <param name="value">The source value</param>
/// <returns>The mapped value</returns>
public object MapToHostType(JsValue value)
{
JsValueType valueType = value.ValueType;
object result = null;
switch (valueType)
{
case JsValueType.Null:
result = null;
break;
case JsValueType.Undefined: // Undefined is not mapped
result = value;
break;
case JsValueType.Boolean:
result = value.ToBoolean();
break;
case JsValueType.Number:
result = NumericHelpers.CastDoubleValueToCorrectType(value.ToDouble());
break;
case JsValueType.String:
result = value.ToString();
break;
case JsValueType.Function:
JsPropertyId externalObjectPropertyId = JsPropertyId.FromString(ExternalObjectPropertyName);
if (value.HasProperty(externalObjectPropertyId))
{
JsValue externalObjectValue = value.GetProperty(externalObjectPropertyId);
result = externalObjectValue.HasExternalData ?
GCHandle.FromIntPtr(externalObjectValue.ExternalData).Target : null;
}
result ??= value.ConvertToObject();
break;
case JsValueType.Object:
case JsValueType.Error:
case JsValueType.Array:
case JsValueType.Symbol:
case JsValueType.ArrayBuffer:
case JsValueType.TypedArray:
case JsValueType.DataView:
result = value.HasExternalData ?
GCHandle.FromIntPtr(value.ExternalData).Target : value.ConvertToObject();
break;
default:
throw new ArgumentOutOfRangeException();
}
return(result);
}
public static IEnumerable <string> EnumeratePropertyNames(this JsValue val)
{
var lenId = JsPropertyId.FromString("length");
var names = val.GetOwnPropertyNames();
var len = names.GetProperty(lenId).ToInt32();
for (var i = 0; i < len; i++)
{
yield return(names.GetIndexedProperty(JsValue.FromInt(i)).ToString());
}
}
protected override void InnerRemoveVariable(string variableName)
{
InvokeScript(() =>
{
JsValue globalObj = JsValue.GlobalObject;
JsPropertyId variableId = JsPropertyId.FromString(variableName);
if (globalObj.HasProperty(variableId))
{
globalObj.SetProperty(variableId, JsValue.Undefined, true);
}
});
}
private JToken VisitObject(JsValue value)
{
var jsonObject = new JObject();
var properties = Visit(value.GetOwnPropertyNames()).ToObject <string[]>();
foreach (var property in properties)
{
var propertyId = JsPropertyId.FromString(property);
var propertyValue = value.GetProperty(propertyId);
jsonObject.Add(property, Visit(propertyValue));
}
return(jsonObject);
}
private JsValue VisitObject(JObject token)
{
var jsonObject = AddRef(JsValue.CreateObject());
foreach (var entry in token)
{
var value = Visit(entry.Value);
var propertyId = JsPropertyId.FromString(entry.Key);
jsonObject.SetProperty(propertyId, value);
value.Release();
}
return(jsonObject);
}
public static IEnumerable <JsValue> EnumerateArrayValues(this JsValue val)
{
if (val.ValueType != JsValueType.Array)
{
throw new InvalidOperationException("Can't enumerate non array value");
}
var lenId = JsPropertyId.FromString("length");
var len = val.GetProperty(lenId).ToInt32();
for (var i = 0; i < len; i++)
{
yield return(val.GetIndexedProperty(JsValue.FromInt(i)));
}
}
private JToken VisitArray(JsValue value)
{
var array = new JArray();
var propertyId = JsPropertyId.FromString("length");
var length = value.GetProperty(propertyId).ToInt32();
for (var i = 0; i < length; ++i)
{
var index = JsValue.FromInt(i);
var element = value.GetIndexedProperty(index);
array.Add(Visit(element));
}
return(array);
}
public void JsPropertyIdCanBeCreated()
{
using (var rt = BaristaRuntimeFactory.CreateRuntime())
{
using (var ctx = rt.CreateContext())
{
using (ctx.Scope())
{
//TODO: This might not be the final signature -- creating a propertyid requires a current context.
var propertyId = JsPropertyId.FromString(rt.Engine, "foo");
Assert.NotNull(propertyId);
propertyId.Dispose();
}
}
}
}
protected override object InnerCallFunction(string functionName, params object[] args)
{
object result = InvokeScript(() =>
{
JsValue globalObj = JsValue.GlobalObject;
JsPropertyId functionId = JsPropertyId.FromString(functionName);
bool functionExist = globalObj.HasProperty(functionId);
if (!functionExist)
{
throw new JsRuntimeException(
string.Format(CoreStrings.Runtime_FunctionNotExist, functionName));
}
JsValue resultValue;
JsValue functionValue = globalObj.GetProperty(functionId);
if (args.Length > 0)
{
JsValue[] processedArgs = MapToScriptType(args);
foreach (JsValue processedArg in processedArgs)
{
AddReferenceToValue(processedArg);
}
JsValue[] allProcessedArgs = new[] { globalObj }.Concat(processedArgs).ToArray();
resultValue = functionValue.CallFunction(allProcessedArgs);
foreach (JsValue processedArg in processedArgs)
{
RemoveReferenceToValue(processedArg);
}
}
else
{
resultValue = functionValue.CallFunction(globalObj);
}
//modified by chuan.yin in 2017/4/29
//return MapToHostType(resultValue);
return(ConvertJsObjectToNetObject(resultValue));
});
return(result);
}
protected override bool InnerHasVariable(string variableName)
{
bool result = InvokeScript(() =>
{
JsValue globalObj = JsValue.GlobalObject;
JsPropertyId variableId = JsPropertyId.FromString(variableName);
bool variableExist = globalObj.HasProperty(variableId);
if (variableExist)
{
JsValue variableValue = globalObj.GetProperty(variableId);
variableExist = variableValue.ValueType != JsValueType.Undefined;
}
return(variableExist);
});
return(result);
}
protected override void InnerRemoveVariable(string variableName)
{
_dispatcher.Invoke(() =>
{
using (CreateJsScope())
{
try
{
JsValue globalObj = JsValue.GlobalObject;
JsPropertyId variableId = JsPropertyId.FromString(variableName);
if (globalObj.HasProperty(variableId))
{
globalObj.SetProperty(variableId, JsValue.Undefined, true);
}
}
catch (OriginalException e)
{
throw WrapJsException(e);
}
}
});
}
internal static extern JsErrorCode JsCopyPropertyIdUtf8(JsPropertyId propertyId, byte[] buffer, UIntPtr bufferSize, out UIntPtr length);
internal static extern JsErrorCode JsCreatePropertyIdUtf8(string name, UIntPtr length, out JsPropertyId propertyId);
internal static extern JsErrorCode JsDefineProperty(JsValue obj, JsPropertyId propertyId, JsValue propertyDescriptor, out bool result);
internal static extern JsErrorCode JsDeleteProperty(JsValue obj, JsPropertyId propertyId, bool useStrictRules,
out JsValue result);
public static IEnumerable <KeyValuePair <string, JsValue> > EnumerateProperties(this JsValue _this)
=> from nameVal in EnumerateArrayValues(_this.GetOwnPropertyNames())
let name = nameVal.ToString()
let propId = JsPropertyId.FromString(name)
let val = _this.GetProperty(propId)
select new KeyValuePair <string, JsValue>(name, val);
internal static extern JsErrorCode JsGetPropertyIdFromSymbol(JsValue symbol, out JsPropertyId propertyId);
internal static extern JsErrorCode JsGetSymbolFromPropertyId(JsPropertyId propertyId, out JsValue symbol);
/// <summary>
/// Defines a new object's own property from a property descriptor
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="propertyId">The ID of the property</param>
/// <param name="propertyDescriptor">The property descriptor</param>
/// <returns>Whether the property was defined</returns>
public bool DefineProperty(JsPropertyId propertyId, JsValue propertyDescriptor)
{
bool result;
JsErrorHelpers.ThrowIfError(NativeMethods.JsDefineProperty(this, propertyId, propertyDescriptor, out result));
return result;
}
internal static extern JsErrorCode JsSetProperty(JsValue obj, JsPropertyId propertyId, JsValue value,
bool useStrictRules);
/// <summary>
/// Gets a property descriptor for an object's own property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="propertyId">The ID of the property</param>
/// <returns>The property descriptor</returns>
public JsValue GetOwnPropertyDescriptor(JsPropertyId propertyId)
{
JsValue descriptorReference;
JsErrorHelpers.ThrowIfError(NativeMethods.JsGetOwnPropertyDescriptor(this, propertyId, out descriptorReference));
return descriptorReference;
}
internal static extern JsErrorCode JsGetPropertyIdFromSymbol(JsValue symbol, out JsPropertyId propertyId);
internal static extern JsErrorCode JsGetSymbolFromPropertyId(JsPropertyId propertyId, out JsValue symbol);
internal static extern JsErrorCode JsGetPropertyIdType(JsPropertyId propertyId,
out JsPropertyIdType propertyIdType);
internal static extern JsErrorCode JsDefineProperty(JsValue obj, JsPropertyId propertyId,
JsValue propertyDescriptor, out bool result);
internal static extern JsErrorCode JsGetPropertyIdFromName(string name, out JsPropertyId propertyId);
internal static extern JsErrorCode JsGetPropertyNameFromId(JsPropertyId propertyId, out string name);
internal static extern JsErrorCode JsGetOwnPropertyDescriptor(JsValue obj, JsPropertyId propertyId,
out JsValue propertyDescriptor);
internal static extern JsErrorCode JsGetPropertyIdType(JsPropertyId propertyId, out JsPropertyIdType propertyIdType);
internal static extern JsErrorCode JsHasProperty(JsValue obj, JsPropertyId propertyId, out bool hasProperty);
/// <summary>
/// Determines whether an object has a property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="propertyId">The ID of the property</param>
/// <returns>Whether the object (or a prototype) has the property</returns>
public bool HasProperty(JsPropertyId propertyId)
{
bool hasProperty;
JsErrorHelpers.ThrowIfError(NativeMethods.JsHasProperty(this, propertyId, out hasProperty));
return hasProperty;
}
internal static extern JsErrorCode JsDeleteProperty(JsValue obj, JsPropertyId propertyId, bool useStrictRules, out JsValue result);
/// <summary>
/// Deletes an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="propertyId">The ID of the property</param>
/// <param name="useStrictRules">The property set should follow strict mode rules</param>
/// <returns>Whether the property was deleted</returns>
public JsValue DeleteProperty(JsPropertyId propertyId, bool useStrictRules)
{
JsValue returnReference;
JsErrorHelpers.ThrowIfError(NativeMethods.JsDeleteProperty(this, propertyId, useStrictRules, out returnReference));
return returnReference;
}
internal static extern JsErrorCode JsHasProperty(JsValue obj, JsPropertyId propertyId, out bool hasProperty);
internal static extern JsErrorCode JsGetProperty(JsValue obj, JsPropertyId propertyId, out JsValue value);
/// <summary>
/// Sets an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="id">The ID of the property</param>
/// <param name="value">The new value of the property</param>
/// <param name="useStrictRules">The property set should follow strict mode rules</param>
public void SetProperty(JsPropertyId id, JsValue value, bool useStrictRules)
{
JsErrorHelpers.ThrowIfError(NativeMethods.JsSetProperty(this, id, value, useStrictRules));
}
internal static extern JsErrorCode JsGetOwnPropertyDescriptor(JsValue obj, JsPropertyId propertyId, out JsValue propertyDescriptor);
internal static extern JsErrorCode JsSetProperty(JsValue obj, JsPropertyId propertyId, JsValue value, bool useStrictRules);
internal static extern JsErrorCode JsGetPropertyIdFromName(string name, out JsPropertyId propertyId);
/// <summary>
/// Gets an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="id">The ID of the property</param>
/// <returns>The value of the property</returns>
public JsValue GetProperty(JsPropertyId id)
{
JsValue propertyReference;
JsErrorHelpers.ThrowIfError(NativeMethods.JsGetProperty(this, id, out propertyReference));
return propertyReference;
}
/// <summary>
/// Sets an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="source">The JavaScript value</param>
/// <param name="name">The name of the property</param>
/// <param name="value">The new value of the property</param>
/// <param name="useStrictRules">The property set should follow strict mode rules</param>
public static void SetProperty(this JsValue source, string name, JsValue value, bool useStrictRules)
{
JsPropertyId id = JsPropertyId.FromString(name);
source.SetProperty(id, value, useStrictRules);
}
internal static extern JsErrorCode JsGetPropertyNameFromId(JsPropertyId propertyId, out string name);
