Hi ClearScript-Team,
since ClearScript 7.5 the engine no longer returns a promise/task if the last Statement is a not awaited promise/task.
We have some thing like this code:
async function test()
{
let text = await File.readAllTextAsync("C:\\tmp\\file.txt");
DebugOutput(`1. Read text from file: ${text}`);
text = await File.readAllTextAsync("C:\\tmp\\file.txt");
DebugOutput(`2. Read text from file: ${text}`);
text = await File.readAllTextAsync("C:\\tmp\\file.txt");
DebugOutput(`3. Read text from file: ${text}`);
text = await File.readAllTextAsync("C:\\tmp\\file.txt");
DebugOutput(`4. Read text from file: ${text}`);
}
test();Is there a way to check if the engine is still executing (async) code?
Full C# Example:
internal class Program
{
static void Main(string[] args)
{
string scriptCode = """
async function test()
{
for (let i = 0; i < 100; i++)
{
console.log(`Starting iteration ${i}`);
Example.DebugOutput(`Iteration ${i}`);
const text = await Example.readAllTextAsync("C:\\tmp\\file.txt");
Example.DebugOutput(`Iteration ${i} - File content: ${text}`);
}
}
test();
""";
using(V8ScriptEngine scriptEngine = new V8ScriptEngine("Test", V8ScriptEngineFlags.EnableTaskPromiseConversion))
{
scriptEngine.AddHostType("Example", typeof(Example));
object result = scriptEngine.Evaluate(new DocumentInfo(new Uri("c:\\temp\\fake.js")) {
Category = ModuleCategory.Standard
}, scriptCode);
if(result is Task t)
{
t.GetAwaiter().GetResult();
}
Console.WriteLine("Script execution completed.");
}
}
}
public static class Example
{
public static async Task<string> readAllTextAsync(string path)
{
return await File.ReadAllTextAsync(path);
}
public static void DebugOutput(string text)
{
Console.WriteLine(text);
}
}Output:
Iteration 0
Iteration 0 - File content: Das ist ein Test Text 123 1!
Iteration 1
Iteration 1 - File content: Das ist ein Test Text 123 1!
Iteration 2
Iteration 2 - File content: Das ist ein Test Text 123 1!
Iteration 3
Script execution completed.
Iteration 3 - File content: Das ist ein Test Text 123 1!
Iteration 4
I already have checked this issues:
#672
#649
Kind regards,
David
EDIT: Full C# Example.
Hi ClearScript-Team,
since ClearScript 7.5 the engine no longer returns a promise/task if the last Statement is a not awaited promise/task.
We have some thing like this code:
Is there a way to check if the engine is still executing (async) code?
Full C# Example:
Output:
I already have checked this issues:
#672
#649
Kind regards,
David
EDIT: Full C# Example.