https://github.com/pulseengine/spar
AADL v2.2 toolchain in Rust — parser, analysis, and WASM component integration
https://github.com/pulseengine/spar
Last synced: about 1 month ago
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AADL v2.2 toolchain in Rust — parser, analysis, and WASM component integration
- Host: GitHub
- URL: https://github.com/pulseengine/spar
- Owner: pulseengine
- License: mit
- Created: 2026-03-08T06:57:00.000Z (3 months ago)
- Default Branch: main
- Last Pushed: 2026-04-02T02:13:16.000Z (2 months ago)
- Last Synced: 2026-04-02T02:34:28.191Z (2 months ago)
- Language: Rust
- Size: 6.28 MB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Agents: AGENTS.md
Awesome Lists containing this project
README
# Spar
AADL v2.3 toolchain + deployment solver
[](https://github.com/pulseengine/spar/actions/workflows/ci.yml)
[](https://github.com/pulseengine/spar/actions/workflows/proofs.yml)
[](https://github.com/pulseengine/spar/actions/workflows/ci.yml)
[](https://codecov.io/gh/pulseengine/spar)
Meld
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Loom
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Synth
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Kiln
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Sigil
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Spar
A Rust implementation of a complete AADL (Architecture Analysis and Design Language) toolchain. Parses, validates, analyzes, transforms, and visualizes system architectures per SAE AS5506D. Includes a deployment solver for automated thread-to-processor allocation. Designed for safety-critical systems modeling -- avionics, vehicle software, WASM component architectures, and AI agent workflows.
Spar replaces the Eclipse/Java-based OSATE2 toolchain with a fast, embeddable, WASM-compilable alternative built on rust-analyzer's proven architecture patterns.
## Installation
```bash
# From source
cargo install --git https://github.com/pulseengine/spar
# Or download a pre-built binary from releases
# https://github.com/pulseengine/spar/releases
```
## Quick Start
```bash
# Parse an AADL model and show the syntax tree
spar parse vehicle.aadl --tree
# List all declared items
spar items vehicle.aadl
# Instantiate a system hierarchy
spar instance --root Pkg::System.Impl vehicle.aadl test-data/sensor_lib.aadl
# Run all analysis passes
spar analyze --root Pkg::System.Impl vehicle.aadl test-data/sensor_lib.aadl
# Allocate threads to processors (deployment solver)
spar allocate --root Pkg::System.Impl vehicle.aadl test-data/sensor_lib.aadl
# Render the architecture as SVG
spar render --root Pkg::System.Impl -o arch.svg vehicle.aadl test-data/sensor_lib.aadl
# Run verification assertions
spar verify --root Pkg::System.Impl --rules rules.toml vehicle.aadl
```
## CLI Commands
| Command | Description |
|------------|--------------------------------------------------------------|
| `parse` | Parse AADL files and show syntax tree or errors |
| `items` | List declared packages, types, implementations |
| `instance` | Build the system instance hierarchy |
| `analyze` | Run all analysis passes (SARIF/JSON/text output) |
| `allocate` | Solve thread-to-processor deployment bindings |
| `diff` | Compare two model versions for structural/diagnostic changes |
| `modes` | List operational modes and mode transitions |
| `render` | Generate SVG/HTML architecture diagrams |
| `verify` | Evaluate verification assertions against the model |
| `lsp` | Start the Language Server Protocol server |
## Architecture
20 crates, layered from low-level parsing to high-level analysis:
```
spar-syntax Lossless CST (rowan red-green trees)
spar-parser Recursive descent parser with error recovery
spar-annex AADL annex sublanguage parsing (EMV2, BLESS, BA)
spar-base-db Salsa database for incremental computation
spar-hir-def HIR definitions -- item tree, instance model, arenas
spar-hir Public semantic facade (name resolution, properties)
spar-analysis 30 pluggable analysis passes
spar-transform Format transforms (AADL <-> WIT, WAC, Rust crates, wRPC)
spar-solver Deployment solver (thread-to-processor allocation)
spar-render SVG architecture diagrams (compound Sugiyama layout)
spar-network Network topology and WCTT analysis support
spar-variants Product-line variant selection and HIR filtering
spar-verify Requirements verification engine
spar-verify-macros Procedural macros for verification rules
spar-codegen Rust + WIT code generation from instance models
spar-insight Discrepancy assistant (compare CTF traces vs expected)
spar-sysml2 SysML v2 / KerML extraction and generation
spar-mcp Model Context Protocol server (read-only oracles)
spar-cli Command-line interface
spar-wasm WebAssembly component (WASI P2)
```
## Key Features
- **30 analysis passes** -- scheduling, latency, connectivity, resource budgets, ARINC 653, EMV2 fault trees, bus bandwidth, weight/power, mode reachability, and more
- **Assertion engine** -- declarative verification rules in TOML (`spar verify`)
- **Deployment solver** -- automated thread-to-processor allocation with constraint satisfaction
- **SARIF output** -- analysis results in SARIF format for CI integration
- **VS Code extension** -- live AADL rendering and diagnostics via LSP
- **WASM component** -- compiles to a 1.3 MB wasm32-wasip2 component
- **Incremental** -- salsa-based memoization for fast re-analysis
- **Lossless parsing** -- every byte preserved in the syntax tree
## Editor support
A first-party VS Code extension lives in [`vscode-spar/`](vscode-spar/). It pairs the `spar lsp` server (diagnostics, hover, go-to-definition, completion, rename, inlay hints) with a live architecture-diagram webview that re-renders on save. See [`vscode-spar/README.md`](vscode-spar/README.md) for install + setup.
## Documentation
- [Quickstart](docs/quickstart.md) -- build spar, parse + analyze the sample model in ~30 minutes
- [`spar moves` reference](docs/cli/moves.md) -- hypothetical-rebinding oracle (verify + enumerate)
- [WASM-as-architecture design](docs/plans/2026-03-10-wasm-as-architecture-design.md) -- WIT/WAC/wRPC transforms
- [VS Code extension design](docs/plans/2026-03-18-vscode-extension-design.md) -- editor integration
- [Deployment solver plan](docs/plans/2026-03-21-deployment-solver-plan.md) -- allocation algorithm
## Safety
Full STPA (System-Theoretic Process Analysis) safety analysis:
- [STPA analysis](safety/stpa/analysis.yaml) -- losses, hazards, UCAs, loss scenarios
- [Safety requirements](safety/stpa/requirements.yaml) -- 23 STPA-derived requirements
- [Rivet artifacts](artifacts/) -- requirements, architecture decisions, verification records
## License
MIT License -- see [LICENSE](LICENSE).
---
Part of PulseEngine -- formally verified WebAssembly toolchain for safety-critical systems