Velociportr
Autonomous C/C++ to Rust Transpilation — Verified, Validated, Delivered.
5 Stages. Full Autonomy. Verified Output.
Each stage builds on the last, creating a self-correcting system that delivers production-ready Rust.
Preprocessing & Code Analysis
Before any transpilation begins, Velociportr performs deep static analysis on the source codebase.
Complexity Analysis
Measures cyclomatic complexity, call depth, and dependency graphs to prioritize translation order.
Semantic Mapping
Builds abstract representations of program behavior to guide the LLM toward correct Rust patterns.
Data Flow Analysis
Tracks pointer aliasing, ownership patterns, and lifetime requirements to inform Rust's borrow checker.
LLM Code Generation
AI-powered transpilation converts preprocessed C/C++ into idiomatic Rust, function by function.
Context-Aware Translation
The LLM receives preprocessed context, type info, and semantic hints for each translation unit.
Error Patching
Compilation errors are detected and patched inline before moving to the verification stage.
Idiomatic Patterns
Output uses Rust best practices: Result types, iterators, ownership, and zero-cost abstractions.
Oracle-Based Verification
This is Velociportr's key differentiator. We don't just translate — we mathematically verify behavioral equivalence.
WASM Lifting
Both the original C and generated Rust are compiled to WASM for platform-independent comparison.
IR Comparison
Intermediate representations are compared to verify identical behavior at the instruction level.
Behavioral Equivalence
Each function is verified to produce identical outputs for all inputs — not just syntactic similarity.
Correction Loop
Functions that fail oracle verification are automatically fed back through the pipeline with error context.
Automatic Re-generation
Failed functions are re-generated with detailed feedback from the verification stage, improving with each iteration.
Self-Correcting Architecture
The loop continues until all functions pass verification or are flagged for human review, ensuring no silent failures.
Human in the Loop
The final stage brings experienced Rust engineers for review, ensuring production readiness.
Logic Review
Engineers review business logic, edge cases, and architectural decisions that go beyond mechanical equivalence.
Production Readiness
Final polish including documentation, integration tests, and CI/CD pipeline configuration for the new Rust codebase.
More Than Syntax Translation
Velociportr goes far beyond what existing transpilers and AI code tools can achieve.
Oracle-Based Verification
No other tool verifies behavioral equivalence at the IR level. We don't just translate — we prove correctness.
Multi-Stage Pipeline
Five purpose-built stages work together, each one catching issues the others might miss. Defense in depth for code migration.
Self-Correcting Architecture
The correction loop automatically re-generates and re-verifies failed functions — no manual intervention required.
Human-in-the-Loop Finish
Automation handles the heavy lifting. Expert engineers handle the nuance. The best of both worlds.
JQ: 139K Lines of C to Rust
We ported the popular JQ JSON processor — a complex, real-world codebase — to demonstrate Velociportr at scale.
Scale Progression Timeline
Flexible Engagement Models
Choose the approach that fits your migration needs and organizational structure.
Per-Project Licensing
Scoped to a specific codebase. Pay per migration project with clear deliverables and timelines.
- Fixed-scope engagement
- Defined deliverables
- Oracle verification included
- Human review included
Annual Platform License
Unlimited access to Velociportr for your organization. Ideal for teams with ongoing migration needs.
- Unlimited migrations
- Priority processing
- Dedicated support
- Custom pipeline tuning
- SLA guarantees
Managed Migration Services
White-glove service. Our team manages the entire migration from assessment to production deployment.
- Full project management
- Dedicated engineering team
- Integration support
- Post-migration support