search

zzzprojects / Eval-Expression.NET

C# Eval Expression | Evaluate, Compile, and Execute C# code and expression at runtime.
https://eval-expression.net/
Other
449 stars 86 forks source link

Cannot define a Func like this? #91

Closed cesaryuan closed 3 years ago

cesaryuan commented 3 years ago

Cannot define a Func like this, but it works in vs.

var context = new EvalContext();
context.Execute(@"Func<string, string> Functest = (path) => {
    if (false)
    {
        return path;
    }
    return path;
};");

It throws the error like below:

at System.Linq.Expressions.Compiler.LabelInfo.ValidateFinish()
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitLambdaBody(CompilerScope parent, Boolean inlined, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitDelegateConstruction(LambdaExpression lambda)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitExpression(Expression node, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitVariableAssignment(BinaryExpression node, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitExpression(Expression node, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitExpressionAsType(Expression node, Type type, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.Emit(BlockExpression node, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitExpression(Expression node, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitConvert(UnaryExpression node, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitExpression(Expression node, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.EmitLambdaBody(CompilerScope parent, Boolean inlined, CompilationFlags flags)
   at System.Linq.Expressions.Compiler.LambdaCompiler.Compile(LambdaExpression lambda, DebugInfoGenerator debugInfoGenerator)
   at System.Linq.Expressions.Expression`1.Compile()
   at .[](EvalContext , String , IDictionary`2 , Type , EvalCompilerParameterKind , ExpressionScope , String , Boolean , Boolean )
   at .[](EvalContext , String , IDictionary`2 , Type , EvalCompilerParameterKind , Boolean , Boolean , Boolean )
   at Z.Expressions.EvalContext.Execute[TResult](String code)
   at SomeTest.Program.Main(String[] args) in E:\Desktop\Program\C#\SomeTest\Program.cs:line 38
无法跳至未定义的标签“”。
Cannot jump to undefined label“”。
JonathanMagnan commented 3 years ago

Hello @cesaryuan ,

Thank you for reporting, my developer will look at what is missing to make it compatible.

Best Regards,

Jon

JonathanMagnan commented 3 years ago

Hello @cesaryuan ,

The v4.0.29 has been released.

Could you try it and let us know if that has been fixed correctly?

Best Regards,

Jon

cesaryuan commented 3 years ago

Thank you! Works for me.