Aspecs

Asterix conversion and validation tool is an integral part of this project.

Features:

• validate sources file
• transparently convert from one format to another
• convert from one format to itself (prettify definition file)
• dump file as a list of items
• show asterix definition signature (like a fingerprint, but not depending on a particular file format)
• generate documentation format

Conversion process works in the following steps:

1. parse input file to internal (abstract) structure
2. validate internal structure
3. generate required output format from internal structure

Supported formats:

• custom .ast format
• standard .json format

It is possible to extend the converter to other formats by implementing appropriate encodeAsterix and decodeAsterix functions.

Abstract internal structure is the same for all formats.

Installation

To install or upgrade asterix specifications tools, use one of the following methods.

Static binary installation

Pre-build 64-bit linux binary is available to download from this link.

• current version: 2.1.0
• SHA256SUM: 30d8cefb9f4cdf8a402d4cb08888c1e252636d3e8b99c90d84f5e3d8a87057d2

Download and copy the file to some location and set file mode, for example under UbuntuOS:

sudo cp aspecs-static /usr/local/bin/aspecs
sudo chmod 755 /usr/local/bin/aspecs

# verify installation
aspecs --version

Installation via nix package manager

With active nix environment:

cd aspecs
nix-build
nix-env -i $(readlink result)

# verify installation
aspecs --version

Usage

# show help
aspecs --help

# validate a file (ast/json format)
aspecs validate --input-ast input.ast
aspecs validate --input-json input.json

# prettify ast file after editing, the file will be overwritten
aspecs prettify input.ast --ast

# show definition fingerprint, for the same definitions
# the fingerprint shall be the same, regardless of the format
aspecs checksum --input-ast input.ast
aspecs checksum --input-json input.json

# convert ast -> json
aspecs convert --input-ast --output-json input.ast > out.json

# convert json -> ast
aspecs convert --input-json --output-ast input.json > out.ast

Development

Install nix package manager, clone repository

curl -L https://nixos.org/nix/install | sh
git clone https://github.com/zoranbosnjak/asterix-specs.git
cd asterix-specs/aspecs/

(Re)build aspecs with nix-build and run it

nix-build
./result/bin/aspecs --help

Use nix-shell environment

nix-shell

# monitor changes, auto rebuild on any source change
ghcid "--command=ghci -Wall $EXTENSIONS -iother -ilib -iapp app/Main.hs"

# run program without rebuild
runhaskell $EXTENSIONS -iother -ilib -iapp app/Main --help

# (re)build with 'cabal' and run program
cabal build
find . -type f -executable | grep -v "\.so"

exit