ChaiScript
sol2
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ChaiScript | sol2 | |
---|---|---|
5 | 15 | |
2,552 | 3,101 | |
0.9% | - | |
0.4 | 7.2 | |
5 months ago | about 1 month ago | |
C++ | C++ | |
GNU General Public License v3.0 or later | MIT License |
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Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
ChaiScript
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How to use C++ as the core language for a Fantasy Console?
If you want to use C++ for scripting, take a look at Jason Turner's ChaiScript
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Enabling C/C++ compilation in an application.
3) Similiar to 2, but use more common scripting languages: chai, cs-script, sol2 (c++ framework to embed lua)
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ArkScript, a language designed to be used in C++ projects, now has macros
A few years back I actually went and made a ChaiScript based video game engine (https://16bpp.net/blog/post/masala-a-chaiscript-game-engine/). The end goal for it was to be able to make a Pacman like clone, but have all of the game logic implemented in ChaiScript. I actually found out as I added more realtime elements (implemented in ChaiScript) that it started to take much longer to process the game logic; the "game loop FPS" was under 60, which is not good. I actually proposition that ChaiScript move to a bytecode VM (https://github.com/ChaiScript/ChaiScript/issues/266), but I'm guessing that no movement was made on that front.
- Is it advisable to embed python in c++ ? Have anyone tried it, what is the best way to do it?
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Looking for a codegen library that uses C++ for scripting
Maybe ChaiScript? It is not exactly what you are looking for, but very similar, in my opinion.
sol2
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why?
Here's an example: sol2
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Tools for rolling your own engine
Here is link number 2 - Previous text "Sol"
Sol for fast lua embedding
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Storing pointers to C++ data in Lua in a type-safe-ish manner that are comparable on the Lua side.
Have you considered using sol2? https://github.com/ThePhD/sol2 Or if you don't want to switch over, you can at least look at their code and see how they handle this.
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jluna: a new Julia <-> C++ Wrapper
It is half of a pun as I was inspired by [sol3](https://github.com/ThePhD/sol2) which is a lua <-> c++ wrapper. Sol means sun and the julia c-api prefixes all it's functions with jl, luna means moon so it is pronounced "jay luna"
So far, it has been cumbersome to embed it into C-language projects, because it's C-interface is hard to use and poorly documented. Because of this, many choose to just use python or lua instead.
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A new C++ <-> Julia Wrapper: jluna
If you want to be portable I'd recommend C++ and Lua, I used those for years and it runs on everything and there's this most amazing wrapper API which was a huge inspiration
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Why the C Language Will Never Stop You from Making Mistakes
Off topic, but this is the author of my favourite Lua C++ binding library (https://github.com/ThePhD/sol2). Great guy!
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Sayonara, C++, and Hello to Rust
I mean, if you could tell from my original post, I like C++ templates. The point is not to constantly write templates in your calling code, the point is to architect a library with templates that affords flexibility and dynamism so that the calling code is easy to write, read, and reason about. Consider, for example, the sol2[0] example usage code vs the actual source code itself[1].
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Design Issues for Foreign Function Interfaces (2004)
Very interesting article!
Unfortunately, it doesn't mention Lua, which in my opinion has one of the most elegant C APIs that I have seen. It is entirely stack based, which means you only need to work with primitive types, such as numbers, C strings and user provided opaque pointers. As a consequence, you never have to care about memory management because Lua doesn't even let you access the actual Lua objects.
You want to create a table (= Lua's dictionary/array hybrid) and set a field "foo" to 5? lua_newtable() creates a new table and pushes it onto the stack. Then you push "foo" with lua_pushstring() and 5 with lua_pushnumber(). Finally you call lua_settable(), which pops the key and value from the stack, checks if the top of the stack contains a table, and if yes, sets the given field to the given value. The actual table structure is never exposed!
This kind of stack manipulation might seem unusual and a bit unweildy, but what you get is safety. If you mess up the stack or perform illegal operations, Lua will call an error handler, but the VM should never crash. The stack API can be seen as the fundamental layer upon which people can create nice abstractions for their host language of choice. Examples are "sol2" for C++ (https://github.com/ThePhD/sol2) or "lupa" for Python (https://github.com/scoder/lupa)
The public API is contained in "lua.h": https://github.com/lua/lua/blob/master/lua.h. "lauxlib.h" offers some useful helper functions: https://github.com/lua/lua/blob/master/lauxlib.h
For comparison, this is Python's "Limited" C API: https://docs.python.org/3/c-api/stable.html#stable
If you want to learn more about Lua's C API, have a look at section 4 in https://www.lua.org/manual/5.4/manual.html
What are some alternatives?
Lua - Lua is a powerful, efficient, lightweight, embeddable scripting language. It supports procedural programming, object-oriented programming, functional programming, data-driven programming, and data description.
V8 - The official mirror of the V8 Git repository
Duktape - Duktape - embeddable Javascript engine with a focus on portability and compact footprint
squirrel - Official repository for the programming language Squirrel
luacxx - C++11 API for creating Lua bindings
SWIG - SWIG is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages.
Wren - The Wren Programming Language. Wren is a small, fast, class-based concurrent scripting language.
pybind11 - Seamless operability between C++11 and Python
CppSharp - Tools and libraries to glue C/C++ APIs to high-level languages