Make executable archive just like Java's .jar archive?
Mike Parker
aldacron at gmail.com
Thu Sep 12 13:23:03 UTC 2019
On Thursday, 12 September 2019 at 12:53:27 UTC, BoQsc wrote:
> On Thursday, 12 September 2019 at 12:52:48 UTC, BoQsc wrote:
>> Is there a way to archive multiple .d source code files and
>> make that archive executable, or something similar?
>
> https://en.wikipedia.org/wiki/JAR_(file_format)
A JAR file is just a standard zip file. The Java Virtual Machine
loads .class files (which are Java bytecode files, not Java
source) and executes them at runtime. It doesn't matter if
they're in a jar file or not. Java was designed for this from the
beginning.
If you're really talking about loading .d *source* files, that
means they either have to be interpreted like a scripting
language, in which case you'll need a D interpreter, or they'll
need to be compiled at runtime into bytecode (in which case
you'll need a bytecode interpreter), or compiled at runtime into
object files, in which case you'll need a mechanism for loading
object files into a program (there was an object loader library
around back in the D1 days).
If you want to do what Java does and compile ahead of time to a
bytecode format and distribute the bytecode in an archive to be
loaded at runtime, then that requires implementing a bytecode
compiler, a loader, and a bytecode interpreter.
I know that LLVM can output bytecode, so with LDC that's the
first step out of the way. Now all you need is for someone to
implement a loader and bytecode interpreter.
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