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//
// (c) 2003, sof.
//
// Dynamic invocation helper classes. The details of how
// to access the .NET object model via the Reflection API
// is taken care of by Invoker.{h,cpp}
//
#pragma once
#using <mscorlib.dll>
using namespace System;
using namespace System::Reflection;
using namespace System::Text;
using namespace System::Runtime::InteropServices;
[assembly:AssemblyKeyFileAttribute(S"invoker.snk")];
namespace DynInvoke {
//
// Class: TypeName
//
// Purpose: pairing up an assembly name and the type/class name.
//
[ComVisible(false)]
public __gc class TypeName {
public:
System::String* m_assembly;
System::String* m_class;
int m_length;
TypeName() {
m_assembly = String::Empty;
m_class = String::Empty;
m_length = 0;
}
void Print() {
if (m_assembly && m_assembly != String::Empty ) {
Console::Write("[");
Console::Write(m_assembly);
Console::Write("]");
}
Console::WriteLine(m_class);
}
int Length() { return m_length; }
System::String* toStdString() {
System::String* res = new System::String(m_class->ToCharArray());
if (m_assembly && m_assembly != String::Empty ){
res = String::Concat(res, S",");
res = String::Concat(res, m_assembly);
}
return res;
}
};
//
// Class: InvokeBridge
//
// Purpose: Collection of (static) methods for dynamically creating
// objects and accessing methods/fields on them.
//
[ClassInterface(ClassInterfaceType::AutoDual),
GuidAttribute("39D497D9-60E0-3525-B7F2-7BC096D3A2A3"),
ComVisible(true)
]
public __gc class InvokeBridge {
public:
InvokeBridge() {
Assembly* corAss = Assembly::Load("mscorlib.dll");
System::String* dir = System::IO::Path::GetDirectoryName(corAss->Location);
m_assemblies = new System::Collections::ArrayList();
System::String* fs[] = System::IO::Directory::GetFiles(dir, "*.dll");
for (int i=0;i < fs->Length; i++) {
try {
Assembly* tAss = Assembly::LoadFrom(fs[i]);
m_assemblies->Add(tAss->FullName);
} catch (Exception* e) {
continue;
}
}
}
//
// Method: CreateObject(String* assemName, String* objSpec, Object* args[])
//
// Purpose: Given a fully qualified name of a class/type, try
// to create an instance of it.
//
Object* CreateObject(System::String* assemName,
System::String* objSpec,
Object* args[]);
//
// Method: InvokeMethod
//
// Purpose: Given a pointer to an already created object, look up
// one of its method. If found, invoke the method passing it
// 'args' as arguments.
//
// Comments: the format of the method-spec is "methodName(type1,..,typeN)" [N>=0]
//
Object* InvokeMethod(Object* obj,
System::String* methSpec,
Object* args[]);
//
// Method: InvokeStaticMethod
//
// Purpose: Invoke a static method, given the fully qualified name
// of the method (and its arguments). If found, invoke the
// method passing it 'args' as arguments.
//
// Comments: the format of the method-spec is
// "T1.T2.<..>.Tn.methodName(type1,..,typeN)" [N>=0]
//
Object* InvokeStaticMethod(System::String* assemName,
System::String* methSpec,
Object* args[]);
//
// Method: GetField
//
// Purpose: Fetch the (boxed) value of named field of a given object.
//
Object* GetField(Object* obj, System::String* fieldSpec);
//
// Method: GetField
//
// Purpose: Fetch the (boxed) value of named static field.
//
Object* GetStaticField(System::String* clsName,
System::String* fieldSpec);
//
// Method: SetField
//
// Purpose: Replace the (boxed) value of named field of a given object.
//
void SetField(Object* obj, System::String* fieldSpec, Object* val);
//
// Method: SetStaticField
//
// Purpose: Replace the (boxed) value of named field of a given object.
//
void SetStaticField(System::String* clsName,
System::String* fieldSpec,
Object* val);
//
// Method: NewString
//
// Purpose: construct a System.String object copy in a manner that avoids
// COM Interop from deconstructing it to a BSTR.
//
System::Object* NewString( System::String* s);
//
// Method: NewArgArray
//
// Purpose: create a new array for holding (boxed) arguments to constructors/
// methods.
//
Array* NewArgArray(int sz);
//
// Method: SetArg
//
// Purpose: set an entry in the argument vector.
//
void SetArg(Object* arr[], Object* val, int idx);
//
// Method: GetArg
//
// Purpose: get an entry in the argument vector.
//
Object* GetArg(Object* arr[], int idx);
System::Type* InvokeBridge::GetType(System::String* typeName);
protected:
System::Collections::ArrayList __gc* m_assemblies;
Object* InvokeBridge::CreateInstance(TypeName* typeName,
Object* args[]);
};
} /* namespace */
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