Re: How to create GTK+ apps with Glade and D on windows
On Friday, 31 May 2019 at 18:47:06 UTC, Obsidian Jackal wrote:
I'm new to D and want to create GTK+ apps. I have Visual
Studio, Glade, the Gtk+ runtime, DMD, and DUB installed. What
steps, guides, or advice should I follow to be able to be able
to use these tools together to make a sane app?.
I wrote some D code that parses a glade interface file and
converts it in to easily accessible D code.
You use the ID field in glade to specify the D object name.
Go to github's gtkD to find a reference to it in issues. It's not
perfect and might require a little work figuring it out but it
works out nice once you get it set up.
It's basically used like
class App : GtkBase!("Interface.Glade")
{
...
}
and then App will have all the objects ID's as objects.
e.g., if you have a label in the glade interface with ID label,
then
App.label
is the gtkD object for that label.
Re: Extract code of function
On Sunday, 26 May 2019 at 17:46:35 UTC, Andrey wrote:
Hello,
Is it possible to extract code of some function into string
variable using CT reflextion?
For example:
int test(bool flag)
{
return flag ? 100 : getRandom();
}
enum string code = GetFunctionCode!test; // "return flag ? 100
: getRandom();"
You can hack this by using import(filename) and importing the
file. If you had a good D parser you could potentially do this
safely. You must use the -J switch though.
Instantiate templated class at runtime
I have been using Orange SerDes library for an application and
have run in to a major hurdle. I have the need to SerDes a
templated class. It seems Orange can only Serialize the class but
when it attempts to deserialize it at runtime it cannot build the
class.
It represents the type in the output as `Issue1.Y!string.Y` which
doesn't even seem right but regardless, it cannot seem to create
a new instance of Y!T.
I realize that the templates do not probably exist at runtime for
instantiation and so this is impossible, but Y!string surely does
exist since I create an object with it(although if separate paths
exist I could see how it could be an issue).
I need to be able to create such classes because it seems to be
the only limitation of deseralizing templates:
If, for example, I modify the instance creation code(in
Reflection.d):
Object newInstance (string name)
{
auto classInfo = ClassInfo.find(name);
if (!classInfo)
{
if (name == "Issue1.Y!string")
{
import Issue1;
return new Y!string;
}
if (name == "Issue1.Y!int")
{
import Issue1;
return new Y!int;
}
throw new Exception("Cannot find runtime class information for
`"~name~"` to instantiate!");
return null;
}
return newInstance(classInfo);
}
and manually create the classes then everything seems to work
great.
I have a few questions:
1. Is it possible to have a runtime class and struct creator
function that can deal with templates. It doesn't seem like it
should be that big a deal. One only needs to actually know the
size of class and that will depend on the template parameter
sizes, which if they are known then everything is known?
2. Is the output or Orange for templated classes correct?
"Issue1.Y!string.Y" or should it be "Issue1.Y!string"? Else this
is a bug that I'll need to track down and fix.
3. I figure that 1 might be a bit off so I will have to hack the
code to create a factory to build the various templated types
I'll use. This is not ideal.
In any case, my feeling is that ClassInfo should handle templated
classes too.
-- MWE
import std.stdio;
import orange.serialization.Serializable : nonSerialized;
import std.file;
import orange.serialization._, orange.serialization.archives._;
class C
{
int x = 53;
}
class Y(T) : C
{
T x;
}
int main()
{
auto archive = new XmlArchive!(char); // create an XML archive
auto serializer = new Serializer(archive); // create the
serializer
serializer.register!(C);
serializer.register!(Y!int);
serializer.register!(Y!string);
C c = new C();
C[] ya;
auto yi = new Y!int;
yi.x = 22;
auto ys = new Y!string;
ys.x = "sfda";
ya ~= yi;
ya ~= ys;
auto slfp = `test.xml`;
if (!false && exists(slfp))
{
auto f = std.file.read(slfp);
archive.beginUnarchiving(cast(immutable(void)[])f);
auto ud = archive.untypedData;
ya = serializer.deserialize!(C[])(ud);
} else
{
// write xml file
archive.beginArchiving();
std.file.write(slfp, cast(byte[])serializer.serialize(ya));
}
return 0;
}
