Best way to do Extern functions...

Monkey Forums/Monkey Programming/Best way to do Extern functions...

therevills

(Posted 2011) [#1]

Diddy's external functions are getting pretty big now and its a bit of a pain to add empty stubs to targets which does not support a function.

Currently we have got the following:

functions.monkey

#if HOST="macos" And TARGET="glfw"
	Import "native/diddy.${TARGET}.mac.${LANG}"
#else
	Import "native/diddy.${TARGET}.${LANG}"
#end

Extern

	#If LANG="cpp" Then
		Function RealMillisecs:Int() = "diddy::systemMillisecs"
	#Else
		Function RealMillisecs:Int() = "diddy.systemMillisecs"
	#End
Public

diddy.android.java

class diddy
{
	static int systemMillisecs()
	{
		int ms = (int)System.currentTimeMillis();
		return ms;
	}
}

diddy.glfw.cpp

#include <time.h>
#include <Shellapi.h>

class diddy
{
	public:

	// only accurate to 1 second 
	static int systemMillisecs() {
		time_t seconds;
		seconds = time (NULL);
		return seconds * 1000;
	}
}

etc

Is there a better way? I've looked in the mojo app file and tried to do it in a similar way with a class for the extern, but it would mean I would have to instantiate the functions class and call the methods within that class, which I dont want to do - I just want to call this function: RealMillisecs()

AdamRedwoods

(Posted 2011) [#2]

In Monkey itself...

Import "native/myfile.${TARGET}.${LANG}"

Extern 

Class MonkeyClass="nativeClass"

	Method Method1()
	Method Method2()
	
End

Function CallMethod1()
        MonkeyClass.Method1()
End

Then in the native code (java for example):

class nativeClass{
	
	float var1;
	
	void Method1(){
		DoSomething();
	}
	//etc...
}

EDIT: Sorry, finally read the bottom part... but I don't see a way around it personally, unless you bock out each language as it's own separate file and use the preprocessor commands in them, then having a main file that imports each language as needed.