nimc 1.2.7

Python Package made by Mhadhbi Issam .

Nimc

command line utilty in order to create Defold naitive extensions in Nim .

♠ Install

pip install nimc

♠ Getting started

open terminal in root path of defold project :

♠♠ Create Extension named ext :

nimc init ext

♠♠ Build project :

nimc build ext

♠♠ Edit Nim code inside ext/extext.nim :

Note :

• To export the functions from nim it must be add exported public through * annoation .

• To export the functions from nim it must be added with pargma through {.cdecl,exportc,dynlib.} annoation .

• After any of edit of nim file make sure to call build command nimc build ext

• the nimc will take care of cpp file to export functions !!

proc add*( a : cint , b:cint ): cint {.cdecl,exportc,dynlib.} = 
    return a + b

proc function*( a : cint , b:cint , c: cint  ): cint {.cdecl,exportc,dynlib.} = 
    return a + b * 2 

this will generate in cpp file :

static int nim_add(lua_State* L)
{
	int a = luaL_checkinteger(L, 1);
	int b = luaL_checkinteger(L, 2);
	int result = add(
		a ,
		b ,
	) ; 
	lua_pushinteger(L, result);
	return 1;
}

static int nim_function(lua_State* L)
{
	int a = luaL_checkinteger(L, 1);
	int b = luaL_checkinteger(L, 2);
	int c = luaL_checkinteger(L, 3);
	int result = function(
		a ,
		b ,
		c ,
	) ; 
	lua_pushinteger(L, result);
	return 1;
}

static const luaL_reg Module_methods[] =
{
	{"add", nim_add},
	{"function", nim_function},
	{0, 0}
};

♠♠ Usage of naitive extension :

in any script file :

	local result = ext.add(10,12)
	print(result)