jvm
Cloak
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jvm
- Simple Open-Source Java Virtual Machine in C
- Requesting feedback on a simple Java Virtual Machine written in C
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Using setjmp(3) to handle exceptions and maintaining a stack of malloc'ed pointers to be freed after a longjmp(3)... Is this hack acceptable?
I'm implementing a simple java virtual machine for school. For now it just reads a class file into a ClassFile structure, I'll write the disassembler and the jvm itself later.
Cloak
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Object-oriented Programming with ANSI-C [pdf]
Where cloak.h is https://github.com/pfultz2/Cloak/blob/master/cloak.h
The above macros are admitttedly very hairy. If C had a better preprocessor, but was otherwise unchanged, they could look a lot nicer.
> I never said such a thing. Would appreciate if you didn't put words in my mouth.
A normal part of dialogue is, "I'm going to repeat your point back to you in my own words, and you can either agree with my restating of it, or point out at which point I've misunderstood you". That's what I was doing. "Would appreciate if you didn't put words in my mouth" is unnecessary hostility.
> In my concrete example, given that FILE and DIR were classified as objects, to which of the so-called objects does F(const char*, FILE, DIR) belong?
Take any language which you agree is "OO". Add one new feature (if it isn't already there): functions/methods which don't belong to any class/object. Now the function you are talking about is possible in that language. Did the language thereby suddenly cease to be OO when we added that feature? Most people would disagree with "Yes". But if "No", what is the actual difference between C and that language?
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Plain C API design, the real world Kobayashi Maru test
> I use this pattern so much I actually wrote a little metaprogramming language that is capable of generating a lot of the boilerplate for you. Link in my bio, if anyone's interested in looking at it.
Your language [0] is an interesting idea. I've done a lot of similar stuff (not at work, I'm very rarely asked to write C code professionally, but I like mucking around with it in my personal time). My own approach to C metaprogramming involves obtuse preprocessor hacks (e.g [1]) and shell scripts that use grep/awk/sed to find macro invocations and spit out new header files as a result. Maybe your way is better.
A word of warning though – do you realise your name for your language is an anti-gay slur in several dialects of English? You might end up unintentionally upsetting some people with it.
[0] https://github.com/scallyw4g/poof
[1] https://github.com/pfultz2/Cloak/wiki/C-Preprocessor-tricks,...
- Pretty-Printable Enumerations in Pure C
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Datatype99: C99 with Sum Types, v0.1.0
Well, mostly I use idioms from the Cloak Wiki (https://github.com/pfultz2/Cloak/wiki/C-Preprocessor-tricks,...). It takes some time to realise them :)
What are some alternatives?
libexpat - :herb: Fast streaming XML parser written in C99 with >90% test coverage; moved from SourceForge to GitHub
xcc - Toy C compiler for x86-64/aarch64/riscv64/wasm