public void Reset()
{
if (_context == null)
{
return;
}
_context.TerminateExecution();
_context.Dispose();
_context = new JavascriptContext();
}
/// <summary>
/// Retrieves the CLR representation, consisting of a dictionary of strings to objects,
/// of a JSON string.
/// </summary>
/// <param name="o">JSON representation, as string</param>
/// <returns>CLR object, consisting of a dictionary
/// of strings (attributes) to objects (values).</returns>
public static object DeserializeJson(string jsonString)
{
JavascriptContext context = null;
try
{
if (string.IsNullOrEmpty(jsonString))
return null;
context = new JavascriptContext();
context.SetParameter("arg1", jsonString);
context.SetParameter("obj", null);
context.Run(@" obj = JSON.parse(arg1, null); ");
return context.GetParameter("obj");
}
catch (AccessViolationException)
{
throw new Exception("Access Violation Exception. Probably you should restart the app ...");
}
catch (Exception ex)
{
throw new Exception("Error in DeserializeJson.", ex);
}
finally
{
if (context != null)
{
context.Dispose();
GC.Collect();
GC.WaitForPendingFinalizers();
}
}
}
public string encrypt(string dKey, string data, string iv, string adata)
{
JavascriptContext context = new JavascriptContext();
context.SetParameter("derivedk", dKey);
context.SetParameter("data", data);
context.SetParameter("iv", iv);
context.SetParameter("adata", adata);
string js = string.Concat(jssjcl,
"var c = new sjcl.cipher.aes(sjcl.codec.hex.toBits(derivedk));",
"var ct = sjcl.mode.ccm.encrypt(c, sjcl.codec.utf8String.toBits(data), sjcl.codec.hex.toBits(iv), sjcl.codec.hex.toBits(adata));",
"ct = sjcl.codec.hex.fromBits(ct);");
context.Run(js);
string response = context.GetParameter("ct") as string;
context.TerminateExecution();
context.Dispose();
context = null;
js = null;
return(response);
}
/// <summary>
/// 资源释放
/// </summary>
public override void Release()
{
if (context != null)
{
context.Dispose();
context = null;
}
}
private void DisposeJSContext()
{
if (contextNeedsDisposale)
{
JsContext.TerminateExecution();
JsContext.Dispose();
}
}
private void FreeContext()
{
if (m_Context != null)
{
m_Context.Dispose();
}
if (m_Elements != null)
{
m_Elements.Dispose();
}
}
private static void ResourceEnsurace()
{
usedCount++;
if (usedCount >= reGenerateJSContextPeek)
{
if (context != null)
{
context.Dispose();
context = null;
}
context = new JavascriptContext();
usedCount = 1;
}
}
private void Dispose(bool disposeManagedResources)
{
var disposedAlready = Interlocked.Exchange(ref alreadyDisposed, 1);
if (disposedAlready != 0)
{
return;
}
if (!disposeManagedResources)
{
return;
}
// Dispose managed resources.
ScriptEngine.Dispose();
}
static void Main(string[] args)
{
SubProcessClient sp = new SubProcessClient(args, AsyncHandleServerRequest);
Console.WriteLine("Client: setting up javascript");
JSContext.SetParameter("console", Console.Out);
JSContext.SetParameter("sp_request", sp);
string filename = "Scripts.js";
string filecontent = File.ReadAllText(filename);
JSContext.Run(filecontent, filename);
Console.WriteLine("Client: starting");
sp.Start();
quitEvent.WaitOne();
Console.WriteLine("Client: quitting");
JSContext.Dispose();
}
public override void Dispose()
{
Trace.Assert(ctx != null);
ctx.Dispose();
}
public void TearDown()
{
_context.Dispose();
}
static void TestFunctionScope()
{
JavascriptContext ctx = new JavascriptContext();
ctx.SetParameter("XB", 0);
ctx.RegisterMethod("\"use strict\";var cyclic; var one_time; (function(){ /* XBuildr-globals: cyclic one_time */ var mathy = $.require(\"math\"); XB += 1; var kyle = 5; this.c = function() { return 2; }}).call(this);", "a");
ctx.RegisterMethod("markus = 4; var a = 5; var b = a*b*999; XB += c();", "b");
try
{
ctx.CallMethodFromDict("a");
ctx.CallMethodFromDict("b");
}
catch (JavascriptException e)
{
Console.WriteLine("Threw error: {0} at code {1} at line {2}", (string)e.Data["V8StackTrace"], e.Source, e.Line);
Console.WriteLine("**********");
}
Console.WriteLine("Parameter XB = {0}", ctx.GetParameter("XB"));
ctx.Dispose();
}
static void RegisterScripts(int iterations)
{
JavascriptContext ctx = new JavascriptContext();
object[] methodArgs = new object[] {};
ctx.SetParameter("XB", 0);
ctx.Run("function a() {XB += 1;}", "a");
ctx.Run("function b() {var a = 5; var b = a*b*999; XB += 1;}", "b");
var watch = new Stopwatch();
watch.Start();
for (int i = 0; i < iterations; i++)
{
ctx.CallMethod("a", methodArgs);
ctx.CallMethod("b", methodArgs);
}
watch.Stop();
Console.WriteLine("Took {0}ms to run {1} iterations of simple methods using RegisterScripts.", watch.ElapsedMilliseconds, iterations);
ctx.Dispose();
}
static void RegisterFunctions(int iterations)
{
JavascriptContext ctx = new JavascriptContext();
ctx.SetParameter("XB", 0);
ctx.RegisterMethod("XB += 1;", "a");
ctx.RegisterMethod("var a = 5; var b = a*b*999; XB += 1;", "b");
var watch = new Stopwatch();
watch.Start();
for (int i = 0; i < iterations; i++)
{
ctx.CallMethodFromDict("a");
ctx.CallMethodFromDict("b");
}
watch.Stop();
Console.WriteLine("Took {0}ms to run {1} iterations of simple methods using RegisterFunctions.", watch.ElapsedMilliseconds, iterations);
ctx.Dispose();
}
public void Dispose()
{
Context.Dispose();
}
public string encrypt(string dKey, string data, string iv, string adata)
{
JavascriptContext context = new JavascriptContext();
context.SetParameter("derivedk", dKey);
context.SetParameter("data", data);
context.SetParameter("iv", iv);
context.SetParameter("adata", adata);
string js = string.Concat(jssjcl,
"var c = new sjcl.cipher.aes(sjcl.codec.hex.toBits(derivedk));",
"var ct = sjcl.mode.ccm.encrypt(c, sjcl.codec.utf8String.toBits(data), sjcl.codec.hex.toBits(iv), sjcl.codec.hex.toBits(adata));",
"ct = sjcl.codec.hex.fromBits(ct);");
context.Run(js);
string response = context.GetParameter("ct") as string;
context.TerminateExecution();
context.Dispose();
context = null;
js = null;
return response;
}
/// <summary>
/// Retrieves the JSON representation of a CLR object,
/// consisting of a dictionary of strings to objects.
/// </summary>
/// <param name="o">CLR object,
/// consisting of a dictionary of strings (attributes) to objects (values).</param>
/// <returns>JSON representation, as string</returns>
public static string SerializeObject(object o)
{
JavascriptContext context = null;
try
{
if (o == null)
return "";
context = new JavascriptContext();
context.SetParameter("arg1", o);
context.SetParameter("obj", null);
context.Run(@" obj = JSON.stringify(arg1, null); ");
return (string)context.GetParameter("obj");
}
catch (AccessViolationException)
{
throw new Exception("Access Violation Exception. Probably you should restart the app ...");
}
catch (Exception ex)
{
throw new Exception("Error in SerializeObject.", ex);
}
finally
{
if (context != null)
{
context.Dispose();
GC.Collect();
GC.WaitForPendingFinalizers();
}
}
}
public void Destruct()
{
JsContext.TerminateExecution();
JsContext.Dispose();
}
