Rust migration (#30)

The migration is motivated by very poor
performance of Python implementation. This was caused partially by the
ANTLR parser having a general runtime that couldn't be tailored in any
way, and mainly because of the inherent slowness of Python.

New Rust implementation was around 50x faster. After including better
and more detailed heuristics it is still between 30-40x faster without
any performance tweaks. This both creates significant performance
savings that can be spent in the future on more advanced features like
HTML formatting, and opens possibilities of performance gains through
multithreading etc.

Few long existing bugs were fixed along the way. There are some minor
changes in the style applied by `mofmt`. Refer to the `code-style.md`.

Fixes #26
Fixes #27

.github/workflows/ci.yml

@@ -0,0 +1,57 @@
+name: CI
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  format:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+          components: rustfmt
+      - run: cargo fmt --all --check
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+          components: clippy
+      - run: cargo clippy --workspace --all-features -- -D warnings
+
+  build_and_test_linux:
+    name: Build and Test (Linux)
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+        run: cargo test --all-targets
+
+  build_and_test_win:
+    name: Build and Test (Windows)
+    runs-on: windows-latest
+    timeout-minutes: 10
+    steps:
+      - name: Prepare symlink configuration
+        run: git config --global core.symlinks true
+
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+        run: cargo test --all-targets

.gitignore

@@ -162,3 +162,9 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+
+# Added by cargo
+
+/target
+/Cargo.lock

.pre-commit-config.yaml

@@ -5,13 +5,3 @@ repos:
     - id: trailing-whitespace
     - id: end-of-file-fixer
     - id: check-yaml
-
-- repo: https://github.com/psf/black
-  rev: 23.3.0
-  hooks:
-    - id: black
-
-- repo: https://github.com/pycqa/isort
-  rev: 5.12.0
-  hooks:
-    - id: isort

.pre-commit-hooks.yaml

@@ -2,5 +2,5 @@
   name: mofmt
   description: Make your Modelica code pretty
   entry: mofmt
-  language: python
-  files: '.*\.mo$'
+  language: rust
+  files: '.*\.mo$'

CHANGELOG.md

@@ -3,6 +3,39 @@
 All important changes will be described in this file. Or rather I will
 try to document them here.
 
+## [0.4.0] - 2024-02-XX
+
+This release marks an important milestone. From now on `mofmt` will be
+implemented in Rust. The migration was motivated by very poor
+performance of Python implementation. This was caused partially by the
+ANTLR parser having a general runtime that couldn't be tailored in any
+way, and mainly because of the inherent slowness of Python.
+
+New Rust implementation was around 50x faster. After including better
+and more detailed heuristics it is still between 30-40x faster without
+any performance tweaks. This both creates significant performance
+savings that can be spent in the future on more advanced features like
+HTML formatting, and opens possibilities of performance gains through
+multithreading etc.
+
+Few long exisisting bugs were fixed along the way. There are some minor
+changes in the style applied by `mofmt`. Refer to the `code-style.md`.
+
+### Added
+
+- support for new syntactical constructs from Modelica 3.7
+- cover *output-expression-list* production
+
+### Changed
+
+- expressions are now wrapped at every operator inside the precedence
+  level where the original wrap occured as well as in all outer levels
+
+### Fixed
+
+- enum lists and argument lists are now wrapped if they contain
+  descriptions without the need to run formatter twice
+
 ## [0.3.6] - 2024-01-09
 
 Bugfixes and performance improvements.

Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "mofmt"
+description = "Modelica language formatter"
+authors = ["Eryk Mroczek <[email protected]>"]
+version = "0.4.0"
+edition = "2021"
+license = "MPL-2.0"
+readme = "README.md"
+repository = "https://github.com/ErykMroczek/mofmt"
+keywords = ["Modelica", "development", "formatter"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+moparse = "0.1.4-rc4"