[Mono-list] Could not lookup zero argument constructor for class Ninject.StandardKernel

[mimi]

@RobertJordan: After receiving your msg, I did more analyses. Here is the c#
code:

namespace ClassLibrary1
{
    public class Class1
    {
        Class2 mClass2 = new Class2();

        public Class1() { Console.WriteLine("Class1 constructor called!\n");
}
        public void GreetPeople(string sInput1, string sInput2)
        {
            Console.WriteLine(sInput1 + "\n");

            StandardKernel instanceStandardKernel = new StandardKernel();

            mClass2.HelloWorld(sInput2 + "\n");
        }
    }
}

I tested it in Visual Studio and it works. Then I embedded it to my c++
code:


        MonoDomain * domain = mono_jit_init_version ("Domain",
"v4.0.30319");

        MonoAssembly * assembly = NULL;
        assembly = mono_domain_assembly_open (domain,
"/Users/mac1/Downloads/zachary/TestLib/libs/TestZachary/ClassLibrary1.dll");

        MonoImage * image = NULL;
        image = mono_assembly_get_image(assembly);

        MonoClass* classHandle = NULL;
        classHandle = mono_class_from_name(image, "ClassLibrary1",
"Class1");

        MonoObject* instanceClass1 = NULL;
        instanceClass1 = mono_object_new(domain, classHandle);
        if (!instanceClass1)
        {
            printf("Get object error\n");
        }
        else
        {
            printf("Get object successfully\n");
        }

        mono_runtime_object_init(instanceClass1);

        const char* descAsString =
"ClassLibrary1.Class1:GreetPeople(string,string)";

        MonoMethodDesc* description =
mono_method_desc_new(descAsString,true);

        MonoMethod* method = mono_method_desc_search_in_class(description,
classHandle);

        if (!method)
        {
            printf("method is NULL\n");
        }
        else
        {
            printf("Get method successfully\n");
        }

        void* args[2];

        args[0] = mono_string_new(domain, "Greeting from a good friend!");

        args[1] = mono_string_new(domain, "Hello My Mono World!");

        mono_runtime_invoke(method, instanceClass1, args, NULL);

        printf("Here we are, Cool!\n");

        mono_jit_cleanup(domain);


The following are console outputs:


Debugging starts
Get object successfully
Class1 constructor called!

Get method successfully
Greeting from a good friend!


Unhandled Exception:
System.ArgumentNullException: Argument cannot be null.
Parameter name: path1
  at System.IO.Path.Combine (System.String path1, System.String path2)
[0x00000] in <filename unknown>:0 
  at Ninject.Modules.ModuleLoader+<>c__DisplayClassb.<NormalizePaths>b__a
(System.String baseDirectory) [0x00000] in <filename unknown>:0 
  at
System.Linq.Enumerable+<CreateSelectIterator>c__Iterator10`2[System.String,System.String].MoveNext
() [0x00000] in <filename unknown>:0 
  at
System.Linq.Enumerable+<CreateSelectManyIterator>c__Iterator12`2[System.String,System.String].MoveNext
() [0x00000] in <filename unknown>:0 
  at
System.Linq.Enumerable+<CreateSelectManyIterator>c__Iterator12`2[System.String,System.String].MoveNext
() [0x00000] in <filename unknown>:0 
  at
System.Linq.Enumerable+<CreateGroupByIterator>c__Iterator5`2[System.String,System.String].MoveNext
() [0x00000] in <filename unknown>:0 
  at Ninject.Modules.ModuleLoader.LoadModules (IEnumerable`1 patterns)
[0x00000] in <filename unknown>:0 
  at Ninject.KernelBase.Load (IEnumerable`1 filePatterns) [0x00000] in
<filename unknown>:0 
  at Ninject.KernelBase..ctor (IComponentContainer components,
INinjectSettings settings, Ninject.Modules.INinjectModule[] modules)
[0x00000] in <filename unknown>:0 
  at Ninject.KernelBase..ctor (Ninject.Modules.INinjectModule[] modules)
[0x00000] in <filename unknown>:0 
  at Ninject.StandardKernel..ctor (Ninject.Modules.INinjectModule[] modules)
[0x00000] in <filename unknown>:0 
  at ClassLibrary1.Class1.GreetPeople (System.String sInput1, System.String
sInput2) [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.ArgumentNullException: Argument
cannot be null.
Parameter name: path1
  at System.IO.Path.Combine (System.String path1, System.String path2)
[0x00000] in <filename unknown>:0 
  at Ninject.Modules.ModuleLoader+<>c__DisplayClassb.<NormalizePaths>b__a
(System.String baseDirectory) [0x00000] in <filename unknown>:0 
  at
System.Linq.Enumerable+<CreateSelectIterator>c__Iterator10`2[System.String,System.String].MoveNext
() [0x00000] in <filename unknown>:0 
  at
System.Linq.Enumerable+<CreateSelectManyIterator>c__Iterator12`2[System.String,System.String].MoveNext
() [0x00000] in <filename unknown>:0 
  at
System.Linq.Enumerable+<CreateSelectManyIterator>c__Iterator12`2[System.String,System.String].MoveNext
() [0x00000] in <filename unknown>:0 
  at
System.Linq.Enumerable+<CreateGroupByIterator>c__Iterator5`2[System.String,System.String].MoveNext
() [0x00000] in <filename unknown>:0 
  at Ninject.Modules.ModuleLoader.LoadModules (IEnumerable`1 patterns)
[0x00000] in <filename unknown>:0 
  at Ninject.KernelBase.Load (IEnumerable`1 filePatterns) [0x00000] in
<filename unknown>:0 
  at Ninject.KernelBase..ctor (IComponentContainer components,
INinjectSettings settings, Ninject.Modules.INinjectModule[] modules)
[0x00000] in <filename unknown>:0 
  at Ninject.KernelBase..ctor (Ninject.Modules.INinjectModule[] modules)
[0x00000] in <filename unknown>:0 
  at Ninject.StandardKernel..ctor (Ninject.Modules.INinjectModule[] modules)
[0x00000] in <filename unknown>:0 
  at ClassLibrary1.Class1.GreetPeople (System.String sInput1, System.String
sInput2) [0x00000] in <filename unknown>:0 
Debugging has finished


My understanding is that, in Visual Studio, 'new StandardKernel()' invokes
the first ctor of StandardKernal class without passing anything and it
works.

    public class StandardKernel : KernelBase
    {
        public StandardKernel(params INinjectModule[] modules) :
base(modules)
        {
        }

        public StandardKernel(INinjectSettings settings, params
INinjectModule[] modules) : base(settings, modules)
        {
        }

        ......
    }

For Mono, if I insert 'mono_runtime_object_init(instanceStandardKernel)', we
are trying to execute  default argument-less ctor of StandardKernel that
doesn't exist and I got the error which is normal.

Here, how Mono will parse 'new StandardKernel()'? Default ctor or first ctor
without passing anything? Are error messages I got related to this? 

Thanks!
Zachary



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