private static JavaScriptContext CreateHostContext(JavaScriptRuntime runtime, string[] arguments, int argumentsStart)
{
//
// Create the context. Note that if we had wanted to start debugging from the very
// beginning, we would have passed in an IDebugApplication pointer here.
//
JavaScriptContext context = runtime.CreateContext();
//
// Now set the execution context as being the current one on this thread.
//
using (new JavaScriptContext.Scope(context))
{
//
// Create the host object the script will use.
//
JavaScriptValue hostObject = JavaScriptValue.CreateObject();
//
// Get the global object
//
JavaScriptValue globalObject = JavaScriptValue.GlobalObject;
//
// Get the name of the property ("host") that we're going to set on the global object.
//
JavaScriptPropertyId hostPropertyId = JavaScriptPropertyId.FromString("host");
//
// Set the property.
//
globalObject.SetProperty(hostPropertyId, hostObject, true);
//
// Now create the host callbacks that we're going to expose to the script.
//
DefineHostCallback(hostObject, "echo", echoDelegate, IntPtr.Zero);
DefineHostCallback(hostObject, "runScript", runScriptDelegate, IntPtr.Zero);
//
// Create an array for arguments.
//
JavaScriptValue hostArguments = JavaScriptValue.CreateArray((uint)(arguments.Length - argumentsStart));
for (int index = argumentsStart; index < arguments.Length; index++)
{
//
// Create the argument value.
//
JavaScriptValue argument = JavaScriptValue.FromString(arguments[index]);
//
// Create the index.
//
JavaScriptValue indexValue = JavaScriptValue.FromInt32(index - argumentsStart);
//
// Set the value.
//
hostArguments.SetIndexedProperty(indexValue, argument);
}
//
// Get the name of the property that we're going to set on the host object.
//
JavaScriptPropertyId argumentsPropertyId = JavaScriptPropertyId.FromString("arguments");
//
// Set the arguments property.
//
hostObject.SetProperty(argumentsPropertyId, hostArguments, true);
}
return context;
}
private void InitChakraRuntime()
{
runtime = JavaScriptRuntime.Create();
JavaScriptContext.Current = runtime.CreateContext();
}
