Scaly

Compiling a Scala Inspired Language to CPython Bytecode

Command Line Usage

The command line application (scaly.application.Compiler) can be compiled to a jar file with sbt assembly.

scaly 0.1
Usage: scaly [run] [options] <input file>

  <input file>      Location of source file (required)
  -o, --out <file>  Output file - default is in file name with .pyc extension
  --help            Prints the usage text
Command: run
Run the program after compilation, requires python

Project Structure

• com.freddieposer.scaly

  • application
  • AST
  • backend
    • pyc - Code for reading and writing compiled python files
    • internal - InternalSyntaxTree (IST) for representing code pre-compilation
  • typechecker - The TypeChecker generates an IST for use by the backend compiler
    • context
    • types
      • stdtypes - Types in the standard library
  • utils - Utility classes
  • tests - Simple test suite

• test_suite - Each file is a single test

  • Files starting with an S_ are expected to pass, those with an F_ are expected to fail
  • Files in the compiler directory have their expected output at the top in a comment

Notes

• Targeting CPython 3.8 (latest version supported by anaconda3)