public static unsafe Rooted <JS.Value> ManagedToNativeException(JSContextPtr cx, Exception managedException)
{
var errorRoot = NewError(cx, managedException.Message);
var errorObj = errorRoot.Value.AsObject;
var existingStackRoot = new Rooted <JS.Value>(cx);
JSAPI.GetProperty(
cx, &errorObj, "stack", existingStackRoot
);
var existingStackText = existingStackRoot.Value.ToManagedString(cx);
JSAPI.SetProperty(
cx, &errorObj, "stack",
new JSString(
cx,
managedException.StackTrace +
"\n//---- JS-to-native boundary ----//\n" +
existingStackText
)
);
if (managedException.InnerException != null)
{
var inner = ManagedToNativeException(cx, managedException.InnerException);
JSAPI.SetProperty(cx, &errorObj, "innerException", inner);
}
return(errorRoot);
}
public object ToManaged(JSContextPtr context)
{
switch (ValueType)
{
case JSValueType.DOUBLE:
return(packed.f64);
case JSValueType.INT32:
return(packed.i32);
case JSValueType.STRING:
return(ToManagedString(context));
case JSValueType.NULL:
return(null);
case JSValueType.BOOLEAN:
return(packed.i32 != 0);
case JSValueType.OBJECT:
return(ToManagedObject(context));
default:
throw new NotImplementedException("Type '" + ValueType + "' not convertible");
}
}
public static JS.Value ManagedToNative(JSContextPtr cx, object value)
{
if (value == null)
{
return(JS.Value.Null);
}
var s = value as string;
if (s != null)
{
var pString = JSAPI.NewStringCopy(cx, s);
return(new JS.Value(pString));
}
var a = value as Array;
if (a != null)
{
var va = new JS.ValueArray((uint)a.Length);
for (int i = 0, l = a.Length; i < l; i++)
{
va.Elements[i] = ManagedToNative(cx, a.GetValue(i));
}
JS.ValueArrayPtr vaPtr = va;
var pArray = JSAPI.NewArrayObject(cx, ref vaPtr);
return(new JS.Value(pArray));
}
return((JS.Value)Activator.CreateInstance(typeof(JS.Value), value));
}
public static unsafe JSStringPtr NewStringCopy(
JSContextPtr cx,
string s
) {
fixed(char *pChars = s)
return(NewUCStringCopyN(cx, (IntPtr)pChars, (uint)s.Length));
}
public unsafe Rooted <Value> InvokeFunction(
JSContextPtr context,
JSHandleObject thisReference,
params Value[] arguments
)
{
fixed(Value *pThis = &this)
fixed(Value * pArgs = arguments)
{
var argsPtr = new ValueArrayPtr((uint)arguments.Length, (IntPtr)pArgs);
var resultRoot = new Rooted <Value>(context, Undefined);
if (JSAPI.CallFunctionValue(
context, thisReference,
pThis,
ref argsPtr,
resultRoot
))
{
return(resultRoot);
}
resultRoot.Dispose();
return(null);
}
}
public static unsafe bool EvaluateScript(
JSContextPtr cx,
JSHandleObject scope,
string chars,
string filename,
uint lineno,
JSMutableHandleValue rval
)
{
fixed(char *pChars = chars)
fixed(char *pFilename = filename)
{
byte *pFilenameBytes = null;
if (filename != null)
{
byte *temp = stackalloc byte[filename.Length + 1];
pFilenameBytes = temp;
Encoding.ASCII.GetBytes(
pFilename, filename.Length,
pFilenameBytes, filename.Length
);
}
return(EvaluateUCScript(
cx, scope,
(IntPtr)pChars, chars.Length,
(IntPtr)pFilenameBytes, lineno,
rval
));
}
}
public static JSObjectPtr CreateInstance(JSContextPtr context)
{
return(JSAPI.NewObject(
context,
JSClassPtr.Zero,
JSHandleObject.Zero, JSHandleObject.Zero
));
}
public JSCustomClass(JSContextPtr context, string name, JSHandleObject globalObject)
{
Context = context;
ClassDefinition = new JSClass(name);
ClassPtr = new JSClassPtr(ClassDefinition, out ClassPin);
GlobalObject = globalObject;
SetConstructor(DefaultConstructor);
}
/// <summary>
/// Creates a JSString wrapper from a JS string pointer.
/// If the pointer is zero, null is returned.
/// </summary>
public static JSString New(JSContextPtr context, JSStringPtr str)
{
if (str.IsZero)
{
return(null);
}
return(new JSString(context, str));
}
public JSBool DefaultConstructor(JSContextPtr context, uint argc, JSCallArgumentsPtr vp)
{
// We have to invoke NewObjectForConstructor in order to construct a this-reference
// that has our class's prototype and .constructor values.
var @this = NewObjectForConstructor(argc, vp);
vp.Result = @this;
return(true);
}
public static JSObjectPtr CreateInstance(JSContextPtr context)
{
return(JSAPI.NewGlobalObject(
context,
DefaultClass, null,
JSOnNewGlobalHookOption.DontFireOnNewGlobalHook,
ref JSCompartmentOptions.Default
));
}
public static unsafe bool SetProperty(
JSContextPtr cx,
JSHandleObject obj,
string name,
JSHandleValue vp
) {
fixed(char *pName = name)
return(SetUCProperty(cx, obj, (IntPtr)pName, (uint)name.Length, vp));
}
public JSObjectPtr InvokeConstructor(
JSContextPtr context,
params Value[] arguments
)
{
var obj = AsObject;
return(obj.InvokeConstructor(context, arguments));
}
/// <summary>
/// Creates a JSString wrapper from a JS value containing a string.
/// If the value is null or undefined, null is returned.
/// </summary>
public static JSString New(JSContextPtr context, JS.Value str)
{
if (str.IsNullOrUndefined)
{
return(null);
}
return(new JSString(context, str.AsString));
}
public JSArray(
JSContextPtr context,
JSObjectPtr obj
) : base(context, obj)
{
if (!JSAPI.IsArrayObject(context, Root))
{
throw new ArgumentException("Value is not an array", "obj");
}
}
public static unsafe JSObjectPtr NewError(
JSContextPtr cx,
ref JS.ValueArrayPtr args
)
{
var errorPrototype = GetErrorPrototype(cx);
var errorConstructor = GetConstructor(cx, &errorPrototype);
return(New(cx, &errorConstructor, ref args));
}
public Rooted <JS.Value> InvokeFunction(
JSContextPtr context,
JSHandleObject thisReference,
params JS.Value[] arguments
)
{
var thisValue = new JS.Value(this);
return(thisValue.InvokeFunction(context, thisReference, arguments));
}
public unsafe bool IsArray(JSContextPtr context)
{
if (ValueType != JSValueType.OBJECT)
{
return(false);
}
var obj = this.AsObject;
return(JSAPI.IsArrayObject(context, &obj));
}
/// <summary>
/// Registers a managed function as a property on the target object.
/// The managed function is wrapped automatically by a marshalling proxy.
/// </summary>
/// <returns>
/// The function's marshalling proxy that must be retained as long as the function is available to JS.
/// </returns>
public Managed.NativeToManagedProxy DefineFunction(
JSContextPtr context, string name, Delegate @delegate, uint attrs = 0
)
{
var wrapped = new Managed.NativeToManagedProxy(@delegate);
JSAPI.DefineFunction(
context, TransientSelf(), name, wrapped.WrappedMethod, wrapped.ArgumentCount, attrs
);
return(wrapped);
}
// Bound via reflection
private JSBool Invoke(JSContextPtr cx, uint argc, JSCallArgumentsPtr args)
{
// TODO: Marshal params arrays
var managedArgs = new object[ArgumentCount];
for (uint i = 0, l = Math.Min(ArgumentCount, argc); i < l; i++)
{
try {
managedArgs[i] = JSMarshal.NativeToManaged(cx, args[i]);
} catch (Exception exc) {
var wrapped = new Exception(
"Argument #" + i + " could not be converted",
exc
);
JSMarshal.Throw(cx, wrapped);
return(false);
}
}
object managedResult;
try {
managedResult = ManagedMethod.DynamicInvoke(managedArgs);
} catch (Exception exc) {
JSMarshal.Throw(cx, exc);
return(false);
}
if (
(ManagedMethod.Method.ReturnType == null) ||
(ManagedMethod.Method.ReturnType.FullName == "System.Void")
)
{
args.Result = JS.Value.Undefined;
return(true);
}
JS.Value nativeResult;
try {
nativeResult = JSMarshal.ManagedToNative(cx, managedResult);
} catch (Exception exc) {
var wrapped = new Exception(
"Return value could not be converted",
exc
);
JSMarshal.Throw(cx, wrapped);
return(false);
}
args.Result = nativeResult;
return(true);
}
/// <summary>
/// Registers a managed JSNative as a property on the target object.
/// The JSNative should return true on success and always set a result value.
/// </summary>
/// <returns>
/// A pinning handle for the function that must be retained as long as the function is available to JS.
/// </returns>
public unsafe Managed.JSNativePin DefineFunction(
JSContextPtr context, string name, JSNative call,
uint nargs = 0, uint attrs = 0
)
{
var wrapped = new Managed.JSNativePin(call);
JSAPI.DefineFunction(
context, TransientSelf(), name, wrapped.Target, nargs, attrs
);
return(wrapped);
}
public Rooted <JS.Value> GetProperty(JSContextPtr context, string name)
{
var result = new Rooted <JS.Value>(context);
if (JSAPI.GetProperty(context, TransientSelf(), name, result))
{
return(result);
}
result.Dispose();
return(null);
}
public static unsafe JSFunctionPtr DefineFunction(
JSContextPtr cx,
JSHandleObject obj,
string name,
JSNative call,
uint nargs, uint attrs
) {
fixed(char *pName = name)
return(DefineUCFunction(
cx, obj, (IntPtr)pName, (uint)name.Length, call, nargs, attrs
));
}
public static JSBool TestNative(JSContextPtr cx, uint argc, JSCallArgumentsPtr vp)
{
if (argc < 1)
{
return(false);
}
var n = vp[0];
vp.Result = new JS.Value((int)n * 2);
return(true);
}
public unsafe JSObjectPtr InvokeConstructor(
JSContextPtr context,
params JS.Value[] arguments
)
{
fixed(JSFunctionPtr *pThis = &this)
fixed(JS.Value * pArgs = arguments)
{
var argsPtr = new JS.ValueArrayPtr((uint)arguments.Length, (IntPtr)pArgs);
return(JSAPI.New(context, (JSObjectPtr *)pThis, ref argsPtr));
}
}
public JSObjectReference(
JSContextPtr context,
JSObjectPtr obj
)
{
if (context.IsZero)
{
throw new ArgumentNullException("context");
}
Context = context;
Root = new Rooted <JSObjectPtr>(Context, obj);
}
/// <summary>
/// Registers a managed function as a property on the target object.
/// The managed function is wrapped automatically by a marshalling proxy.
/// </summary>
/// <param name="autoRetain">If true, the marshalling proxy is automatically retained by the object wrapper.</param>
/// <returns>
/// The function's marshalling proxy that must be retained as long as the function is available to JS.
/// </returns>
public NativeToManagedProxy DefineFunction(
JSContextPtr context, string name, Delegate @delegate, uint attrs = 0,
bool autoRetain = true
)
{
var result = Pointer.DefineFunction(Context, name, @delegate, attrs);
if (autoRetain)
{
Retain(result);
}
return(result);
}
/// <summary>
/// Wraps existing reference and roots it.
/// </summary>
/// <param name="context"></param>
/// <param name="str"></param>
public JSString(
JSContextPtr context,
JSStringPtr str
)
{
if (context.IsZero)
{
throw new ArgumentNullException("context");
}
Context = context;
Root = new Rooted <JSStringPtr>(Context, str);
}
/// <summary>
/// Registers a managed JSNative as a property on the target object.
/// The JSNative should return true on success and always set a result value.
/// </summary>
/// <param name="autoRetain">If true, the marshalling proxy is automatically retained by the object wrapper.</param>
/// <returns>
/// A pinning handle for the function that must be retained as long as the function is available to JS.
/// </returns>
public JSNativePin DefineFunction(
JSContextPtr context, string name, JSNative call,
uint nargs = 0, uint attrs = 0,
bool autoRetain = true
)
{
var result = Pointer.DefineFunction(Context, name, @call, nargs, attrs);
if (autoRetain)
{
Retain(result);
}
return(result);
}
private static Rooted <JS.Value> NewError(JSContextPtr cx, params object[] errorArguments)
{
var jsErrorArgs = new JS.ValueArray((uint)errorArguments.Length);
for (int i = 0; i < errorArguments.Length; i++)
{
jsErrorArgs.Elements[i] = ManagedToNative(cx, errorArguments[i]);
}
JS.ValueArrayPtr vaPtr = jsErrorArgs;
return(new Rooted <JS.Value>(
cx, new JS.Value(JSAPI.NewError(cx, ref vaPtr))
));
}
