InvalidCastException running the sample code

[yychen]

I'm trying to use this library in Unity. When I was trying out the sample code

var toml = @"global = ""this is a string""
# This is a comment of a table
[my_table]
key = 1 # Comment a key
value = true
list = [4, 5, 6]
";

// Converts the TOML string to a `TomlTable`
var model = Toml.ToModel(toml);
// Prints "this is a string"
Console.WriteLine(model["global"]);

It shows InvalidCastException while running Toml.ToModel(toml) during runtime.

InvalidCastException: Specified cast is not valid.
Tomlyn.Model.SyntaxToModelTransform.Visit (Tomlyn.Syntax.KeyValueSyntax keyValue) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Model/SyntaxToModelTransform.cs:72)
Tomlyn.Syntax.KeyValueSyntax.Accept (Tomlyn.Syntax.SyntaxVisitor visitor) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Syntax/KeyValueSyntax.cs:97)
Tomlyn.Syntax.SyntaxVisitor.DefaultVisit (Tomlyn.Syntax.SyntaxNode node) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Syntax/SyntaxVisitor.cs:100)
Tomlyn.Syntax.SyntaxVisitor.Visit (Tomlyn.Syntax.SyntaxList list) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Syntax/SyntaxVisitor.cs:12)
Tomlyn.Syntax.SyntaxList.Accept (Tomlyn.Syntax.SyntaxVisitor visitor) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Syntax/SyntaxList.cs:32)
Tomlyn.Syntax.SyntaxVisitor.DefaultVisit (Tomlyn.Syntax.SyntaxNode node) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Syntax/SyntaxVisitor.cs:100)
Tomlyn.Syntax.SyntaxVisitor.Visit (Tomlyn.Syntax.DocumentSyntax document) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Syntax/SyntaxVisitor.cs:16)
Tomlyn.Toml.TryToModel[T] (Tomlyn.Syntax.DocumentSyntax syntax, T& model, Tomlyn.Syntax.DiagnosticsBag& diagnostics, Tomlyn.TomlModelOptions options) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Toml.cs:226)
Tomlyn.Toml.ToModel[T] (Tomlyn.Syntax.DocumentSyntax syntax, Tomlyn.TomlModelOptions options) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Toml.cs:204)
Tomlyn.Toml.ToModel[T] (System.String text, System.String sourcePath, Tomlyn.TomlModelOptions options) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Toml.cs:158)
Tomlyn.Toml.ToModel (System.String text, System.String sourcePath, Tomlyn.TomlModelOptions options) (at D:/a/Tomlyn/Tomlyn/src/Tomlyn/Toml.cs:141)
NewBehaviourScript.Start () (at Assets/Scripts/NewBehaviourScript.cs:21)

I cannot reproduce this in Visual Studio, and I'm not very familiar with the .NET world. However, I can reproduce this using MonoDevelop, by downloading Visual Studio 2019 for Mac. It gives the same error.

[xoofx]

Thanks, unfortunately, I'm unable to reproduce this by commit 60b7333
So I believe it is a misusage on your side, but can't tell from your log.
Closing for now.

[yychen]

Can you test it on Unity3D? Or is this package not supposed to work with Unity? I tried the following method, both result into the same error:

• Extract the nuget and put the Tomlyn.dll under netstandard2.0 into my empty Unity project
• Imported NuGet for Unity and install tomlyn (0.12.0) from it

Both methods give me the same InvalidCastException.

BTW, I'm using Unity 2020.3.30f1

[xoofx]

Should be fixed by commit 21de2ab and available soon in 0.12.1+

[yychen]

Thank you very much!