aplite

A parser and interpreter for a subset of APL.

Authors:

• Anirudh Konduru, akonduru@seas.upenn.edu
• Revathi Vijayaraghavan, revathiv@seas.upenn.edu

Components

• The Languange definition is in src/Language.hs. This defines most of the types necessary to parse and execute APL code.
• The Parser is defined in src/Parser.hs. This uses MegaParsec to parse strings representing APL expressions into it's AST.
• Most computation in APL happens in the form of functions (that convert values to other values) and operators, that convert functions to other functions. Some of the built-in functions and operators are defined and implemented in src/BuiltInFunctions.hs and src/BuiltInOperators.hs, respectively.
• The src/Eval.hs contains the functions necessary to run APL code, once it has been parsed into an APL Expression type.
• The src/KeyMapping.hs has the Keyboard mappings and objects for APL characters
• The app/Main.hs has the UI components (as well as the main function which is used to run the app)

Dependencies

• MegaParsec: for all our parsing needs.
• parser-combinators: some helper combinators to help with parsing.
• mtl: For Monad transformers (StateT, ExceptT)
• math-functions: implementations of some commonly used functions
• gamma: implementation of the gamma function (for the APL gamma function)
• split: helper functions for reshaping arrays (ex., chunksOf)
• prettyprinter: Library for pretty printing. Used for printing APL expressions and functions.
• containers: for Data.Map
• brick: for Brick TUI
• vty: for for graphics-vty (that Brick is built upon) for handling events

Running the app

stack build --exec "aplite-exe"