Hi,
I've changed strategy, and now I have made a small wrapper DLL which exposes
a simple API for neko.
Here is the wrapper header:
// Opens a neko file - returns 0 if succesful.
__declspec( dllexport ) int neko_init_simpleapi(char const * filename);
// Calls a static function taking a string, returning a string, using
haXe ABI
__declspec( dllexport ) char const * neko_static_haxe_call(char const *
className, char const * functionName, char const * parameter);
where neko_static_haxe_call looks like this:
__declspec( dllexport ) char const * neko_static_haxe_call(char const *
className, char const * functionName, char const * parameter) {
value f;
value ret;
value classes;
value myClass;
value args[1];
value exc = NULL;
char * exception;
if (vm == 0 || module == NULL) {
printf("No module loaded\n");
return NULL;
}
classes = val_field(module, val_id("__classes"));
myClass = val_field(classes, val_id(className));
f = val_field(myClass, val_id(functionName));
if ( !val_is_function(f,1)) {
return NULL;
}
args[0] = alloc_string(parameter);
ret = val_callEx(NULL, f, args, 1, &exc);
if( exc != NULL ) {
buffer b = alloc_buffer(NULL);
val_buffer(b,exc);
exception = val_string(buffer_to_string(b));
printf("Uncaught exception - %s\n", exception);
return NULL;
}
if( !val_is_string(ret) )
return NULL;
return val_string(ret);
}
I use a simple haXe program like this:
class Test {
static public function main() {
neko.Lib.println("Hello world!");
}
static public function myFunction(a : String) : String {
neko.Lib.println("Calling myFunction: " + a);
if (a.length < 2) {
return "Short";
} else {
return "Long";
}
}
}
with the driver being:
#include <stdio.h>
#include "../neko_wrapper/simpleapi.h"
int main( int argc, char *argv[] ) {
char * result;
neko_init_simpleapi("Test.n");
result = neko_static_haxe_call("Test, "myFunction", "Testing");
printf("Result: %s\n", result);
return 0;
}
When I run this, it prints "Hello world" as expected, but it throws an
exception at the line with a.length: Invalid field access : length.
If I run the haXe program with neko directly, there is no such problem.
Any ideas?
I can prepare a .zip with all files, if you want to investigate.
Regards,
Asger
--
Neko : One VM to run them all
(http://nekovm.org)
