sif

sif is a scripting language with c-style syntax. It contains a bytecode compiler, optimizer and a register based vm. It's small and easily embeddable into rust programs using macros. There is also a nano stdlib for basic operations and interacting with arrays and tables.

sif doesn't really contain any novel features at the moment, and sort of serves as an educational compiler for me to implement what I choose to freely.

Some documentation can be found on the wiki.

Quick Install

If you don't have rust installed, get it with rustup:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Or, if you prefer, here are alternative ways to install rust.

Then, get and run sif:

git clone https://github.com/cjkenn/sif.git
cd sif
cargo run examples/hello.sif

Samples

Hello world

@print("Hello world");

Fizzbuzz

fn fizzbuzz(input) {
  if input % 15 == 0 {
    @print("fizzbuzz");
  } elif input % 3 == 0 {
    @print("fizz");
  } elif input % 5 == 0 {
    @print("buzz");
  } else {
    @print(input);
  }
}

for i, v in @range(1, 15) {
    fizzbuzz(v);
}

Usage

USAGE:
    sif [FLAGS] [OPTIONS] <filename>

ARGS:
    <filename>    sif file to parse and run

FLAGS:
    -a, --analysis      Performs analysis on the CFG and IR before starting the vm
        --bco           Runs the bytecode optimizer before executing in vm
        --emit-ast      Prints the syntax tree to stdout
        --emit-ir       Prints sif bytecode to stdout
    -h, --help          Prints help information
        --timings       Display basic durations for phases of sif
    -t, --trace-exec    Traces VM execution by printing running instructions to stdout
    -V, --version       Prints version information

OPTIONS:
    -H, --heap-size <heap-size>    Sets initial heap size [default: 100]
    -R, --reg-count <reg-count>    Sets the default virtual register count [default: 1024]

Tests

sif has unit tests and integration tests. Unit tests are contained inline (for example, dominance calculation tests), and the sifc_tests crate contains integration tests that require many different crates. The sifc_tests readme has more information on what integrations tests do. To run the tests, cargo can be used:

cargo test

This will run all unit and integration tests.