I wanted to learn how to write a compiler in Haskell using parser combinators. So pisces is a very basic programming language with the syntax inspired a little bit by the Rust programming languge. The compiler provided in this repository targets LLVM and emits LLVM assembly language.

A simple pisces program looks like this (extern functions calls are not yet implemented, so no "Hello World" 😞):

fn add(a: i64, b: i64) -> i64
{
  var c: i64 = a + b;
  return c;
}

fn main () -> i64
{
  return add(4, 5);
}

In order to build it you need LLVM 5.0. From here it's just stack build.

Compile and run a program:

stack exec pscsc main.pscs
llvm-as a.ll
lli a.bc

To build a native executable:

...
llc -filetype=obj a.bc
clang a.o
./a.out

• Pisces language reference
• API