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Makefile (5318, 2020-12-02)
appveyor.yml (2441, 2020-12-02)
build (0, 2020-12-02)
build\a.flx (217, 2020-12-02)
build\b.flx (114, 2020-12-02)
build\c.flx (213, 2020-12-02)
build\d.flx (113, 2020-12-02)
build\generate_test.py (3611, 2020-12-02)
build\gltest.flx (5462, 2020-12-02)
build\old (0, 2020-12-02)
build\old\raii_poc.flx (1685, 2020-12-02)
build\run-test.ps1 (656, 2020-12-02)
build\speed-test.py (1577, 2020-12-02)
build\supertiny.flx (6033, 2020-12-02)
build\tester.flx (4650, 2020-12-02)
build\tests (0, 2020-12-02)
build\tests\anytest.flx (887, 2020-12-02)
build\tests\arraytest.flx (2315, 2020-12-02)
build\tests\basic.flx (2692, 2020-12-02)
build\tests\classes.flx (1272, 2020-12-02)
build\tests\decomposition.flx (1404, 2020-12-02)
build\tests\defertest.flx (400, 2020-12-02)
build\tests\fizzbuzz.flx (429, 2020-12-02)
build\tests\forloops.flx (761, 2020-12-02)
build\tests\functions.flx (2909, 2020-12-02)
build\tests\generics.flx (1895, 2020-12-02)
build\tests\intlimits.flx (1084, 2020-12-02)
build\tests\linkedlist.flx (1096, 2020-12-02)
build\tests\misc.flx (3847, 2020-12-02)
build\tests\operators.flx (1559, 2020-12-02)
build\tests\recursiveFib.flx (355, 2020-12-02)
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# [Flax](https://flax-lang.github.io) A low level, general-purpose language with high level syntax and expressibility. [](http://forthebadge.com) [](http://forthebadge.com) [](https://ci.appveyor.com/project/zhiayang/flax/branch/master)      [](https://github.com/flax-lang/flax/actions)      [](https://semaphoreci.com/zhiayang/flax) ----------------------------------------------- #### Disclaimer #### I work on Flax in my spare time, and as the lone developer I cannot guarantee continuous development. I'm no famous artist but this is my magnum opus, so it'll not be abandoned anytime soon. ### Language Goals - No header files. - Minimal runtime - Minimal stupidity - Clean, expressive syntax ----------------------------------------------- ### Current Features - Structs, unions, enums - Arrays (fixed and dynamic), slices - Pointer manipulation/arithmetic - Operator overloading - Generic functions and types - Type inference (including for generics) - Full compile-time execution (of arbitrary code) - Classes, including virtual dispatch and (single) inheritance ----------------------------------------------- ### Language Syntax - We don't have a proper place that documents everything yet, but most of the basic stuff is probably not gonna change much. The testing code in `build/tests/` (most of them, anyway ” check `tester.flx` to see which ones we call) tests basically 90% of the language, so that's the syntax reference for now. - Yes, the syntax is not "officially" defined by a grammar. The reference parser implementation is the One True Definition, for now. ----------------------------------------------- ### Code Sample ```rust import std::io as _ @entry fn main() { println("hello, world!") } ``` ```rust do { fn prints(m: T, a: [U: ...]) { for x in a => printf(" %.2d", m * x) } printf("set 6:") let xs = [ 1, 2, 3, 4, 5 ] prints(3, ...xs) printf("\n") } do { union option { some: T none } let x = option::some("foobar") let y = option::some(456) println("x = %, y = %", x as some, y as some) } ``` ----------------------------------------------- ### Building the Flax compiler #### Dependencies #### - LLVM 11, mostly due to their obsession with changing the IR interface every damn version - GMP/MPIR - MPFR - libffi #### macOS / Linux - The `makefile` is the preferred way to build on UNIX systems. - LLVM needs to be installed. On macOS, `brew install llvm` should work, and you might need to do some PPA fiddling for Debian-based distros. - A C++17-compatible compiler should be used. - Find the `flaxc` executable in `build/sysroot/usr/local/bin`. - Additionally, the (admittedly limited) standard library will be copied from `./libs` to `./build/sysroot/usr/local/lib/flaxlibs/`. #### Windows - Install [meson](https://mesonbuild.com/). - Run `env MPIR_ROOT_DIR=... LLVM_ROOT_DIR=... meson meson-build-dir` to set the locations for the dependencies (see `meson.build` for the names, there are 4) and configure the build. - Optionally, pass `--buildtype=release` to build a release-mode compiler (highly recommended). - Run `ninja -C meson-build-dir`. - `flaxc.exe` will be found in the build directory. ##### Libraries - Download the [prebuilt binaries](https://github.com/flax-lang/flax/releases/tag/win-build-deps) for the 4 dependencies, and place them somewhere. - Note: the folder structure of the libraries should be `(llvm|mpir|mpfr|libffi)/(Release|Debug)/(include|lib)/...`. ----------------------------------------------- ### Building Flax Programs Since nobody in their right mind is *actually* using this, please pass `-sysroot build/sysroot` to invocations of the compiler -- else the compiler will default to looking somewhere in `/usr/local/lib` for libraries. Speaking of which, standard libraries are looked for in `//lib/flaxlibs/`. Prefix is set to `/usr/local/` by default. Since version 0.41.2, executables can be generated on all 3 of our supported platforms! For Linux and macOS, all that is required is a working C compiler in the `$PATH`; we call `cc` to link object files. For Windows, even if you are not building the compiler from source (eg. you are using a released binary), Visual Studio 2017 or newer must still be installed, with the "Desktop development with C++", "MSVC v142 (or whatever)", and "Windows 10 SDK" components. However, we currently find the toolchain through [established means](https://gist.github.com/machinamentum/a2b587a68a49094257da0c39a6c4405f), so that `link.exe` does not have to be in the `%PATH%`, ie. you do not have to call `vcvarsall.bat` before running the compiler. ----------------------------------------------- ### Contributors Special thanks to the Unofficial Official Language Consultants: [darkf](https://github.com/darkf), [adrian17](https://github.com/adrian17), [sim***2](https://github.com/sim***2), and [ryu0](https://github.com/ryu0). ### Contributing Feel free to open an issue if you feel that there's any missing feature, or if you found a bug in the compiler. Pull requests are also welcome. ### Licensing The Flax compiler itself (this repository) is licensed under the Apache 2.0 license (see `LICENSE` file). For ease of building, some dependencies are included in the repository itself (under the `external` folder) and compiled together, instead of as a separate library (shared or otherwise). These are: 1. [mpreal](https://bitbucket.org/advanpix/mpreal), GPL 2. [utf8rewind](https://bitbucket.org/knight666/utf8rewind), MIT 3. [tinyprocesslib](https://gitlab.com/eidheim/tiny-process-library), MIT

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