almontasser / crust

A C-like programming language that is similar to Rust's syntax. Toy programming language.

CRUST

This is a hobby project to learn about compilers and language design. I've designed the language to be similar to C and Rust.

Heavily inspired by https://github.com/DoctorWkt/acwj

Features

• Global Variables
• Functions
• Arrays
• Integers (signed and unsigned)
• Strings
• Binary Operations
• Code Generation (GNU Assembly)
• Print to Console (integers & ascii characters)
• If Statements
• While Statements
• For Statements
• Function Parameters
• Function Arguments
• Local Variables (Scopes)
• Function Hoisting
• Reading from console
• Dynamic Arrays
• Structs
• Unions
• Enums
• Break & Continue
• Variable Initialization
• Casting
• Sizeof
• Static
• Struct Methods
• Struct Traits
• LLVM

How to use

cargo run <input-file> # Compile the crust language to assembly, which will be written to out.s
cc -no-pie -z noexecstack -o bin out.s # Use the GNU C compiler to compile and link the assembly code to an executable file
./bin # Execute the produced binary

Run tests

./runtests.sh

Examples

Some examples of the language

let c: char;
let str: *char;

fn main(): u8 {
  c= '\n'; printint(c);

  for (str= "Hello world\n"; *str != 0; str= str + 1) {
    printchar(*str);
  }
  return 0;
}

let a: u8;
let b: u8[25];

fn main(): u32 {
  b[3]= 12; a= b[3];
  printint(a);
  return 0;
}

crust's Issues

Linking example assembly fails when using PIE

Great work on this repo, it's quite motivating to see local devs taking on such cool and challenging projects, would love to contribute some day if I get the chance to

According to the README file, it is mentioned that the command cc -o bin out.s can be used to link the assembly to a binary, but it always fails without passing the -no-pie flag (at least in my env)

Maybe consider adding it in the docs to avoid confusion?