internal static extern JsErrorCode JsRunSerializedScriptWithCallback(
JavaScriptSerializedScriptLoadSourceCallback scriptLoadCallback,
JavaScriptSerializedScriptUnloadCallback scriptUnloadCallback,
byte[] buffer,
JsSourceContext sourceContext,
string sourceUrl,
out JsValue result);
public void JsSerializedScriptCanBeParsedWithCallbacks()
{
if (CommonWindowsEngine == null)
{
return;
}
var script = "(()=>{return 6*7;})()";
string sourceUrl = "[eval code]";
bool loaded = false;
bool unloaded = false;
using (var runtimeHandle = Engine.JsCreateRuntime(JavaScriptRuntimeAttributes.None, null))
{
using (var contextHandle = Engine.JsCreateContext(runtimeHandle))
{
Engine.JsSetCurrentContext(contextHandle);
byte[] buffer = new byte[1024];
uint bufferSize = (uint)buffer.Length;
CommonWindowsEngine.JsSerializeScript(script, buffer, ref bufferSize);
JavaScriptSerializedScriptLoadSourceCallback loadCallback = (JavaScriptSourceContext sourceContext, out StringBuilder scriptBuffer) =>
{
loaded = true;
scriptBuffer = new StringBuilder(script);
return(true);
};
JavaScriptSerializedScriptUnloadCallback unloadCallback = (JavaScriptSourceContext sourceContext) =>
{
unloaded = true;
};
var fnHandle = CommonWindowsEngine.JsParseSerializedScriptWithCallback(loadCallback, unloadCallback, buffer, JavaScriptSourceContext.GetNextSourceContext(), sourceUrl);
Assert.NotEqual(JavaScriptValueSafeHandle.Invalid, fnHandle);
var handleType = Engine.JsGetValueType(fnHandle);
Assert.True(handleType == JsValueType.Function);
//Get the string representation of the function. This triggers the load callback.
var fnStringHandle = Engine.JsConvertValueToString(fnHandle);
var stringPtr = CommonWindowsEngine.JsStringToPointer(fnStringHandle, out ulong length);
Assert.True(stringPtr != IntPtr.Zero);
Assert.True(length > 0);
fnStringHandle.Dispose();
fnHandle.Dispose();
}
Engine.JsCollectGarbage(runtimeHandle);
}
Assert.True(loaded);
Assert.True(unloaded);
}
public JavaScriptValueSafeHandle JsRunSerializedScriptWithCallback(JavaScriptSerializedScriptLoadSourceCallback scriptLoadCallback, JavaScriptSerializedScriptUnloadCallback scriptUnloadCallback, byte[] buffer, JavaScriptSourceContext sourceContext, string sourceUrl)
{
Errors.ThrowIfError(LibChakraCore.JsRunSerializedScriptWithCallback(scriptLoadCallback, scriptUnloadCallback, buffer, sourceContext, sourceUrl, out JavaScriptValueSafeHandle result));
result.NativeFunctionSource = nameof(LibChakraCore.JsRunSerializedScriptWithCallback);
if (result != JavaScriptValueSafeHandle.Invalid)
{
Errors.ThrowIfError(LibChakraCore.JsAddRef(result, out uint valueRefCount));
}
return(result);
}
internal static extern JavaScriptErrorCode JsRunSerializedScriptWithCallback(JavaScriptSerializedScriptLoadSourceCallback scriptLoadCallback,
JavaScriptSerializedScriptUnloadCallback scriptUnloadCallback, byte[] buffer, JavaScriptSourceContext sourceContext, string sourceUrl, out JavaScriptValue result);
public static extern JavaScriptErrorCode JsParseSerializedScriptWithCallback(JavaScriptSerializedScriptLoadSourceCallback scriptLoadCallback,
JavaScriptSerializedScriptUnloadCallback scriptUnloadCallback, byte[] buffer, JavaScriptSourceContext sourceContext, string sourceUrl, out JavaScriptValue result);
public void JsSerializedScriptCanBeRunWithCallbacks()
{
if (CommonWindowsEngine == null)
{
return;
}
var script = @"
var moose1 = function() {
//Trigger script loading
var str = arguments.callee.toString();
return 6*7;
};
moose1();
";
string sourceUrl = "[eval code]";
bool loaded = false;
bool unloaded = false;
JavaScriptSerializedScriptLoadSourceCallback loadCallback = (JavaScriptSourceContext sourceContext, out StringBuilder scriptBuffer) =>
{
loaded = true;
scriptBuffer = new StringBuilder(script);
return(true);
};
JavaScriptSerializedScriptUnloadCallback unloadCallback = (JavaScriptSourceContext sourceContext) =>
{
unloaded = true;
};
var loadCallbackHandle = GCHandle.Alloc(loadCallback);
var unloadCallbackHandle = GCHandle.Alloc(unloadCallback);
try
{
using (var runtimeHandle = Engine.JsCreateRuntime(JavaScriptRuntimeAttributes.None, null))
{
using (var contextHandle = Engine.JsCreateContext(runtimeHandle))
{
Engine.JsSetCurrentContext(contextHandle);
byte[] buffer = new byte[1024];
uint bufferSize = (uint)buffer.Length;
CommonWindowsEngine.JsSerializeScript(script, buffer, ref bufferSize);
var resultHandle = CommonWindowsEngine.JsRunSerializedScriptWithCallback(loadCallback, unloadCallback, buffer, JavaScriptSourceContext.GetNextSourceContext(), sourceUrl);
Assert.NotEqual(JavaScriptValueSafeHandle.Invalid, resultHandle);
var handleType = Engine.JsGetValueType(resultHandle);
Assert.True(handleType == JsValueType.Number);
Assert.Equal(42, Engine.JsNumberToInt(resultHandle));
resultHandle.Dispose();
}
Engine.JsCollectGarbage(runtimeHandle);
}
Assert.True(loaded);
Assert.True(unloaded);
}
finally
{
loadCallbackHandle.Free();
unloadCallbackHandle.Free();
}
}
