239 lines
6.4 KiB
Markdown
239 lines
6.4 KiB
Markdown
# Development
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This document describes the development workflow for Decodal itself.
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## Rust checks
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Run the normal Rust checks from the repository root.
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```sh
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cargo fmt --check
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cargo test
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cargo check -p decodal --no-default-features
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nix flake check
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```
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Run the default stdio language server with:
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```sh
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cargo run -q -p decodal-lsp
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```
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The protocol integration tests use an in-memory LSP connection and can be run independently:
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```sh
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cargo test -p decodal-lsp
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```
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Regex support is optional and should be tested explicitly when touched.
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```sh
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cargo test -p decodal --features regex
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cargo run -q -p decodal-cli --features regex -- examples/regex/main.dcdl
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```
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## crates.io release
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The crates.io release contains `decodal`, `decodal-derive`, `decodal-language-service`, `decodal-language-tools`, and `decodal-lsp`.
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`decodal-cli` and the Rust source crate `decodal-wasm` remain repository-only packages.
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The generated WebAssembly package under `packages/decodal-wasm/` is published to npm and JSR.
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The CodeMirror package bundles the generated formatter WebAssembly from `decodal-language-tools`.
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The project is dual licensed as `MIT OR Apache-2.0`.
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The authoritative validation commands, dependency order, and publish commands are maintained in `RELEASING.md` at the repository root.
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## Web site and playground
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The Astro documentation site and browser playground are kept in:
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```text
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site/decodal-site/
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```
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The site imports Markdown files from `doc/manual/souce/` and renders them as mdBook-style pages.
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The playground loads `decodal-wasm` for evaluation and `decodal-codemirror` for editor features and source formatting.
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Important files:
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```text
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site/decodal-site/src/pages/docs/[...slug].astro
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site/decodal-site/src/pages/playground.astro
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site/decodal-site/src/scripts/playground.js
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site/decodal-site/src/scripts/playground-examples.js
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site/decodal-site/src/layouts/ManualLayout.astro
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site/decodal-site/src/lib/docs.js
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site/decodal-site/src/lib/highlight.js
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packages/decodal-codemirror/src/decodal.js
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packages/decodal-codemirror/src/decodal-parser.js
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packages/decodal-wasm/decodal_wasm.js
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packages/decodal-wasm/decodal_wasm_bg.wasm
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packages/decodal-codemirror/wasm/decodal_language_tools.js
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packages/decodal-codemirror/wasm/decodal_language_tools_bg.wasm
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crates/decodal-wasm/src/lib.rs
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crates/decodal-language-tools/src/lib.rs
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```
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Build the WebAssembly packages before building the site:
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```sh
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cd site/decodal-site
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npm install
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npm run build:wasm
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npm run build
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```
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`npm run build:wasm` builds both generated WebAssembly packages.
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`npm run build:runtime` writes generated runtime files into `packages/decodal-wasm/`.
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`npm run build:tools` writes generated language tools files into `packages/decodal-codemirror/wasm/`.
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These generated files are committed so the site can be built without requiring every consumer to regenerate the wasm packages first.
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Publish the generated WebAssembly package from its package directory:
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```sh
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cd packages/decodal-wasm
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npm publish
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npx jsr publish
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```
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Run dry-runs first when preparing a release:
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```sh
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npm pack --dry-run
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npx jsr publish --dry-run
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```
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The npm package name is `decodal-wasm`.
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The JSR package name is `@hare/decodal-wasm`.
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The playground editor uses the `decodal-codemirror` package with the generated Lezer parser in `packages/decodal-codemirror/src/decodal-parser.js`.
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The canonical grammar is documented in `doc/manual/souce/language/grammar.md`; regenerate the Lezer parser when that grammar or `editors/lezer-decodal/decodal.grammar` changes.
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Publish the CodeMirror package from its package directory:
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```sh
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cd packages/decodal-codemirror
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npm install
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npm publish
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npx jsr publish
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```
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Run dry-runs first when preparing a release:
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```sh
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npm install
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npm pack --dry-run
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npx jsr publish --dry-run
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```
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The npm package name is `decodal-codemirror`.
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The JSR package name is `@hare/decodal-codemirror`.
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The documentation build still uses the lightweight JavaScript fallback highlighter so Astro can render Markdown without initializing WASM at build time.
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To run the site locally:
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```sh
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cd site/decodal-site
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npm run dev
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```
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Deploy the static site to Cloudflare Pages with Wrangler direct upload:
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```sh
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cd site/decodal-site
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npm run deploy
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```
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The deploy script runs `npm run build` and then uploads `dist/` to the Pages project named `decodal-site` on branch `master`.
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Cloudflare Pages treats this as production when the project production branch is `master`.
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Use `CLOUDFLARE_PROJECT_NAME` when deploying to a differently named Pages project.
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```sh
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CLOUDFLARE_PROJECT_NAME=my-pages-project npm run deploy
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```
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If the committed WASM package must be regenerated before deploy, use:
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```sh
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npm run deploy:wasm
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```
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## Tree-sitter grammar
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The Tree-sitter grammar is kept in:
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```text
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editors/tree-sitter-decodal/
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```
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Important files:
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```text
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editors/tree-sitter-decodal/grammar.js
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editors/tree-sitter-decodal/queries/highlights.scm
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editors/tree-sitter-decodal/queries/locals.scm
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editors/tree-sitter-decodal/corpus/basic.txt
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```
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The grammar is intended to be portable across editors such as Zed, Neovim, Helix, and Emacs.
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Zed support should consume this grammar rather than relying on a TextMate grammar.
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## Tree-sitter commands
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From the grammar directory:
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```sh
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cd editors/tree-sitter-decodal
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npm install
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npx tree-sitter generate
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npx tree-sitter test
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```
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To inspect a parse tree:
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```sh
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npx tree-sitter parse ../../examples/advanced/main.dcdl
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```
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The generated parser files under `editors/tree-sitter-decodal/src/` are committed so editor integrations can consume the grammar without regenerating it first.
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`node_modules/` is ignored and must not be committed.
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## Updating the grammar
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When the Decodal syntax changes:
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1. Update the canonical EBNF in `doc/manual/souce/language/grammar.md`.
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2. Update the Rust parser/lexer as needed.
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3. Update `editors/tree-sitter-decodal/grammar.js` and run `npx tree-sitter generate` / `npx tree-sitter test`.
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4. Update `editors/lezer-decodal/decodal.grammar` and regenerate the CodeMirror parser:
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```sh
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cd site/decodal-site
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npx lezer-generator ../../editors/lezer-decodal/decodal.grammar -o ../../packages/decodal-codemirror/src/decodal-parser.js
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```
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5. Add or update corpus/tests/examples.
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6. Run Rust and site checks from the repository root.
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## Development shell
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The Nix development shell includes Rust tooling, Node.js, Tree-sitter CLI tooling, and wasm-pack tooling.
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```sh
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nix develop
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```
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The shell provides:
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- `cargo`
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- `rustc`
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- `rustfmt`
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- `clippy`
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- `node`
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- `npm`
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- `wasm-pack`
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- `lld`
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- `tree-sitter`
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- `nixfmt`
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