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Commented Unassigned: Incorrect ANTLR runtime version [6980]

TheRandomGuy — Sat, 18 May 2013 22:08:11 GMT

The Antlr3.Runtime.dll that is currently used requires .NET 3.5. However, Jint itself does not require .NET 3.5 and works OK with .NET 2.0. An Antlr3.Runtime.dll that works OK with .NET 2.0 can be downloaded from http://www.antlr.org/wiki/display/ANTLR3/Antlr3CSharpReleases (the [antlr-dotnet-csharpruntime-3.5.0.2.7z](http://www.tunnelvisionlabs.com/downloads/antlr/antlr-dotnet-csharpruntime-3.5.0.2.7z) file). I've tested with this and all tests pass using this version.
Comments: An 2.0 compatible Jint version would be great.

Edited Unassigned: Dust.js with Jint raises JintException: Function expected [6981]

ewgenym — Tue, 23 Apr 2013 09:59:16 GMT

Hi
I'm trying to run linkedin fork of Dust.js with Jint but get JintException. Code that I use works on Jurassic and Javascriptdotnet.
dust-full-1.2.0.js is taken from https://github.com/linkedin/dustjs/tree/master/dist
Exception doesn't tell much about the error. Looks like it doesn't see the 'dust.compile' function.

__Example:__

```
var dustFull = File.ReadAllText(@"c:\dust\dust-full-1.2.0.js");
const string baseTemplates = @"
var email = 'Hello {name}! You have {count} new messages.';
var compiledEmail = dust.compile(email, 'email', true);
dust.loadSource(compiledEmail);
var data = {
'name': 'Mick',
'count': 30
};

dust.render('email', data, function (err, out) {});
";

var context = new JintEngine()
.SetDebugMode(true);

context.Run(dustFull);
context.Run(baseTemplates);
```

__Actual result:__
Unhandled Exception: Jint.JintException: Function expected.
Line: 3 Char: 4
var compiledEmail = dust.compile(email, 'email', true)
---> Jint.Native.JsException: Exception of type 'Jint.Native.JsException' was t
hrown.
at Jint.ExecutionVisitor.Visit(MethodCall methodCall)
at Jint.ExecutionVisitor.Visit(MemberExpression expression)
at Jint.ExecutionVisitor.Visit(VariableDeclarationStatement statement)
at Jint.ExecutionVisitor.Visit(Program program)
at Jint.JintEngine.Run(Program program, Boolean unwrap)
--- End of inner exception stack trace ---
at Jint.JintEngine.Run(Program program, Boolean unwrap)
at Jint.JintEngine.Run(String script, Boolean unwrap)
at Jint.JintEngine.Run(String script)
at ConsoleApplication2.Program.RunWithJint(SystemConsole console, Localizatio
nHelper sp) in c:\Projects\Tests\ConsoleApplication2\ConsoleApplication2\Program
.cs:line 147
at ConsoleApplication2.Program.Main(String[] args) in c:\Projects\Tests\Conso
leApplication2\ConsoleApplication2\Program.cs:line 63

Created Unassigned: Dust.js with Jint raises JintException: Function expected [6981]

ewgenym — Tue, 23 Apr 2013 09:58:31 GMT

Hi
I'm trying to run linkedin fork of Dust.js with Jint but get JintException. Code that I use works on Jurassic and Javascriptdotnet.
dust-full-1.2.0.js is taken from https://github.com/linkedin/dustjs/tree/master/dist
Exception doesn't tell much about the error. Looks like it doesn't see the 'dust.compile' function.

__Example:__

```
var dustFull = File.ReadAllText(@"c:\dust-full-1.2.0.js");
const string baseTemplates = @"
var email = 'Hello {name}! You have {count} new messages.';
var compiledEmail = dust.compile(email, 'email', true);
dust.loadSource(compiledEmail);
var data = {
'name': 'Mick',
'count': 30
};

dust.render('email', data, function (err, out) {});
";

var context = new JintEngine()
.SetDebugMode(true);

context.Run(dustFull);
context.Run(baseTemplates);
```

__Actual result:__
Unhandled Exception: Jint.JintException: Function expected.
Line: 3 Char: 4
var compiledEmail = dust.compile(email, 'email', true)
---> Jint.Native.JsException: Exception of type 'Jint.Native.JsException' was t
hrown.
at Jint.ExecutionVisitor.Visit(MethodCall methodCall)
at Jint.ExecutionVisitor.Visit(MemberExpression expression)
at Jint.ExecutionVisitor.Visit(VariableDeclarationStatement statement)
at Jint.ExecutionVisitor.Visit(Program program)
at Jint.JintEngine.Run(Program program, Boolean unwrap)
--- End of inner exception stack trace ---
at Jint.JintEngine.Run(Program program, Boolean unwrap)
at Jint.JintEngine.Run(String script, Boolean unwrap)
at Jint.JintEngine.Run(String script)
at ConsoleApplication2.Program.RunWithJint(SystemConsole console, Localizatio
nHelper sp) in c:\Projects\Tests\ConsoleApplication2\ConsoleApplication2\Program
.cs:line 147
at ConsoleApplication2.Program.Main(String[] args) in c:\Projects\Tests\Conso
leApplication2\ConsoleApplication2\Program.cs:line 63

Created Unassigned: Incorrect ANTLR runtime version [6980]

rpmodell — Sun, 14 Apr 2013 09:10:54 GMT

Created Unassigned: ANTLR does not report all lexing/parsing errors [6979]

rpmodell — Sun, 14 Apr 2013 09:09:16 GMT

ANTLR needs a little bit more configuration to ensure that all lexing/parsing errors are reported. Currently, not all lexing/parsing errors are reports.

If the following code would be added somewhere in the project, ANTLR will report all lexing/parsing errors as exceptions:

```
using System;
using System.Collections.Generic;
using System.Text;
using Antlr.Runtime;

partial class ES3Lexer
{
public override void ReportError(RecognitionException e)
{
throw e;
}

protected override object RecoverFromMismatchedToken(IIntStream input, int ttype, BitSet follow)
{
throw new MismatchedTokenException(ttype, input);
}

public override object RecoverFromMismatchedSet(IIntStream input, RecognitionException e, BitSet follow)
{
throw e;
}
}

partial class ES3Parser
{
public override void ReportError(RecognitionException e)
{
throw e;
}

protected override object RecoverFromMismatchedToken(IIntStream input, int ttype, BitSet follow)
{
throw new MismatchedTokenException(ttype, input);
}

public override object RecoverFromMismatchedSet(IIntStream input, RecognitionException e, BitSet follow)
{
throw e;
}
}
```

Created Issue: Loopung through arguments keys [6978]

Synryu — Mon, 11 Mar 2013 13:01:51 GMT

Hi, I encountered what seems to be a bug when I tried to go through a function arguments.
arguments.GetKeys() returned nothing when the length was 2.
I had to use a tiny function like this one to solve my issue :

```
function cast(array) {
if (!isServerSide) //Only needed with Jint, works fine client-side
return array;
var result = [];
for (var i = 0; i < array.length; i++)
result[i] = array[i];
return result;
}
```
Don't know if it will help someone but I wanted to report it.
The version of the dll I use is 0.9.1.

Created Issue: Infinity [6977]

Salia2 — Sat, 23 Feb 2013 18:54:43 GMT

JS code
```
var t = 1 / 0;
```
return me -infinity.

In JsNumberConstructor.cs

```
this.DefineOwnProperty("NEGATIVE_INFINITY", New(Double.PositiveInfinity));
this.DefineOwnProperty("POSITIVE_INFINITY", New(Double.NegativeInfinity));
```
There is something wrong?!

Created Issue: Calling defineGetter throws JintException [6976]

miszczu — Sat, 26 Jan 2013 23:01:24 GMT

Executing this simple code:
```
var engine = new JintEngine();
engine.Run(@"
A = {};
A.__defineGetter__('foo', function() { return 'bar'; });
");
```

throws following exception:
```
Unhandled Exception: Jint.JintException: Function expected.
Line: 3 Char: 20
No source code available. ---> Jint.Native.JsException: Exception of type 'Jint.
Native.JsException' was thrown.
at Jint.ExecutionVisitor.Visit(MethodCall methodCall)
at Jint.Expressions.MethodCall.Accept(IStatementVisitor visitor)
at Jint.ExecutionVisitor.Visit(MemberExpression expression)
at Jint.Expressions.MemberExpression.Accept(IStatementVisitor visitor)
at Jint.ExecutionVisitor.Visit(ExpressionStatement statement)
at Jint.Expressions.ExpressionStatement.Accept(IStatementVisitor visitor)
at Jint.ExecutionVisitor.Visit(Program program)
at Jint.JintEngine.Run(Program program, Boolean unwrap)
--- End of inner exception stack trace ---
at Jint.JintEngine.Run(Program program, Boolean unwrap)
at Jint.JintEngine.Run(String script, Boolean unwrap)
at Jint.JintEngine.Run(String script)
at JintTest.Program.JintTest() in ...
```

Created Issue: Detailed exception is required [6975]

pro100sanya — Sun, 18 Nov 2012 21:41:15 GMT

When script call function that not defined i see: "Function expected".
But what function? Why there not function name?

How hard to add a little more details to the exception message?

Created Issue: eval doesnt scope right [6974]

pm100 — Fri, 26 Oct 2012 20:27:33 GMT

eval.apply(this,["...."]) with this = global should be operating on global scope. It does not

ie in jintshell

f=function(){eval.apply(this,arguments)}
f("var foo = 42")
print(foo)

should say 42, instead is says object not found

ie, firefox, chrome all say 42

I have tried to fix this but dont fully understand the scope system in jint and so far have not suceeded

Created Issue: parseInt(string, int) not working [6973]

baboon27 — Tue, 23 Oct 2012 17:41:51 GMT

Calling parseInt("09", 10) causes Exception, because Jint still interprets leading zero as octal number although there is radix 10. So it is impossible to parse integer from numbers with leading zeros.

Created Issue: string.valueOf doesnt work [6972]

pm100 — Fri, 12 Oct 2012 17:54:52 GMT

if I have a string created by calling .net code (maybe other cases too) then valueOf on it doesnt work

It fails because jstringconstructor declares valueOf to take a jsstring (at the call time we have a jsobject not a jstring). It should be declared to take a JsDictionaryObject just like all the other string functions are.

Commented Issue: Only use Doubles [6971]

cin — Sat, 29 Sep 2012 19:51:36 GMT

Nowhere in the documentation states that your function delegates *must* use doubles as a number input type. (But then again I didn't read everything yet).

The simple piece of code:

engine.SetFunction("SquareInt", new Func<int, int>(a => { return a * a; }));

Will fail when the function is ran, when it doesn't necessarily have to. Who cares if the input types are Int32? If the JS interpreter uses doubles anyways you can up-convert them because an Int32 to Double is an implicit conversion (so is float, short and byte). At the very least this will stop me from having to rewrite delegates that must explicitly cast doubles into ints, which from a design perspective can be bad since doubles encode different information.

Or I could just rewrite my functions to just take doubles, your call. I honestly don't know if it can be done or not since the delegate-taking-ints is in "C# land" while doubles only live in "JS land". Unless there's a way to somehow change the types on delegates.
Comments: There is no implicit conversion from double to int, since it leads a precision loss. In the other hand it is possible to use a .NET value types in scripts, for example you can use System.Convert.ToInt32 to convert Double to Int32 explicitly or if you know that a value you are using is got from a CLR method which returns an integer. JS has many strange things, consider this example var a = new Number(5); var b = new Number(5); var answer = a == b ? 'yes' : 'no';

Created Issue: Only use Doubles [6971]

Radnen — Tue, 18 Sep 2012 03:57:27 GMT

Commented Issue: slice isn't 100% compatible [6970]

d_brownx — Sat, 25 Aug 2012 16:18:22 GMT

"".slice(1) should return "". Instead, it errors.

Jint.JintException : startIndex cannot be larger than length of string.
Parameter name: startIndex
Line: 636 Char: 8
No source code available.
----> System.ArgumentOutOfRangeException : startIndex cannot be larger than length of string.
Parameter name: startIndex

Comments: Bug is in JsStringConstructor.SliceImpl

Edited Issue: slice isn't 100% compatible [6970]

d_brownx — Sat, 25 Aug 2012 15:52:30 GMT

Created Issue: split isn't 100% compatible [6970]

d_brownx — Sat, 25 Aug 2012 15:16:22 GMT

"".split(1) should return [""]. Instead, it errors.

Jint.JintException : startIndex cannot be larger than length of string.
Parameter name: startIndex
Line: 636 Char: 8
No source code available.
----> System.ArgumentOutOfRangeException : startIndex cannot be larger than length of string.
Parameter name: startIndex

Created Issue: engine.CallFunction cannot call qualified names [6969]

pm100 — Wed, 22 Aug 2012 17:34:52 GMT

for example I have load a well known JSON parser/stringify so I have methods JSON.parse adn JSON.stringify at global scope. But I cannot call them via CallFunction. I have to do

jint.Run("var json_stringify = JSON.stringify;"):
jint.CallFunction("json_stringify", obj);

Created Issue: cannot serilaize jsobject using json.net [6968]

pm100 — Wed, 22 Aug 2012 00:18:48 GMT

I call jint and have it return complex object ( {foo:12, bar:'xxx' , etc })

Trying to serialize that using json.net fails.

IT fails deep in json .net becuase jsdictionaryobject says its supports ienumerable<string, jsinstance> but when you call IEnumerable.GetEnumerator (the non generic version) it returns an enumerator of <string, Descriptor>. THis blows json.net up

Edited Issue: Callbacks from another C# thread into JintEngine.Callback cause corruption, crash. [6967]

rwdim — Fri, 10 Aug 2012 16:41:33 GMT

Build (from .csproj) 9.0.30729

In .Net 3.5 When calling from another thread into JintEngine.CallFunction causes corruption in the script running and forces errors. The issue is that Result is global and therefore any change to it during the callback cause the result of the function that is currently running to be invalid.

The error occurs in ExecutionVisitor.ExecuteFunction(JsFunction function, JsDictionaryObject that, JsInstance[] parameters) when it updates Result, which is globally scoped.

To correct this, I modified JintEngine.CallFunction:

public object CallFunction(JsFunction function, params object[] args) {
Jint.Native.JsInstance aResult = null;
visitor.ExecuteFunction(function, null, Array.ConvertAll<object,JsInstance>( args, x => visitor.Global.Marshaller.MarshalClrValue<object>(x) ), out aResult);
return visitor.Global.Marshaller.MarshalJsValue<object>(aResult);
}

And then added a new ExecutionVisitor.ExecuteFunction that appears to work properly and not corrupt the environment:

public void ExecuteFunction(JsFunction function, JsDictionaryObject that, JsInstance[] parameters, out Jint.Native.JsInstance aResult) {
if (function == null) {
aResult = null;
return;
}

if (recursionLevel++ > MaxRecursions) {
throw new JsException(Global.ErrorClass.New("Too many recursions in the script."));
}

// ecma chapter 10.
// TODO: move creation of the activation object to the JsFunction
// create new argument object and instantinate arguments into it
JsArguments args = new JsArguments(Global, function, parameters);

// create new activation object and copy instantinated arguments to it
// Activation should be before the function.Scope hierarchy
JsScope functionScope = new JsScope(function.Scope ?? GlobalScope);

for (int i = 0; i < function.Arguments.Count; i++)
if (i < parameters.Length)
functionScope.DefineOwnProperty(
new LinkedDescriptor(
functionScope,
function.Arguments[i],
args.GetDescriptor(i.ToString()),
args
)
);
else
functionScope.DefineOwnProperty(
new ValueDescriptor(
functionScope,
function.Arguments[i],
JsUndefined.Instance
)
);

// define arguments variable
if (HasOption(Options.Strict))
functionScope.DefineOwnProperty(JsScope.ARGUMENTS, args);
else
args.DefineOwnProperty(JsScope.ARGUMENTS, args);

// set this variable
if (that != null)
functionScope.DefineOwnProperty(JsScope.THIS, that);
else
functionScope.DefineOwnProperty(JsScope.THIS, that = Global as JsObject);

// enter activation object
EnterScope(functionScope);

try {
PermissionSet.PermitOnly();

aResult = function.Execute(this, that, parameters);

// Resets the return flag
if (exit) {
exit = false;
}
}
finally {
// return to previous execution state
ExitScope();

CodeAccessPermission.RevertPermitOnly();
recursionLevel--;
}
}