RoadC

A programming language with Python-style indentation, built from scratch — a tree-walking interpreter in Python and a zero-dependency C99 compiler.

What Works Today

The Python interpreter supports:

• Variables: let, var, const with optional type annotations
• Functions: fun keyword, parameters, return, recursion, closures
• Control flow: if/elif/else, while, for/in, break, continue
• Types: integers, floats, strings (with {var} interpolation), booleans, colors (#FF1D6C)
• Collections: lists, dicts, sets, tuples, ranges
• Operators: arithmetic, comparison, logical, bitwise, compound assignment
• Builtins: print, len, range, str, int, abs, min, max, sorted, input, and more
• Member access: string/list/dict methods (.upper(), .append(), .keys())

fun fibonacci(n):
    if n <= 1:
        return n
    return fibonacci(n - 1) + fibonacci(n - 2)

let result = fibonacci(10)
print(result)  # 55

let name = "world"
let msg = "hello {name}"
print(msg)  # hello world

let xs = [1, 2, 3, 4, 5]
let total = 0
for x in xs:
    total += x
print(total)  # 15

Architecture

source.road
    |
    v
  Lexer (lexer.py, 462 LOC)
    |  Tokens: keywords, literals, operators, INDENT/DEDENT
    v
  Parser (parser.py, 826 LOC)
    |  AST nodes defined in ast_nodes.py (462 LOC)
    v
  Interpreter (interpreter.py, 320 LOC)
       Tree-walking execution with Environment chain

The C compiler (roadc.c, 618 LOC) is a separate implementation that compiles .road files to native executables. Zero external dependencies — just a C99 compiler.

gcc -std=c99 -O2 -o roadc roadc.c
./roadc program.road

Development

# Run a .road file
python roadc.py examples/fibonacci.road

# Run tests (30+ tests)
pytest tests/ -v

# Build C compiler
gcc -std=c99 -O2 -o roadc roadc.c

# Start REPL
python roadc.py

Roadmap

• Type checker (static analysis pass between parser and interpreter)
• Bytecode VM (replace tree-walking for performance)
• Standard library (file I/O, math, networking)
• 3D scene graph (space, cube, sphere keywords — lexer ready, runtime not yet)
• Package manager
• Self-hosting compiler

License

Proprietary — BlackRoad OS, Inc.

Related Projects

Project	Description
RoadC Playground	Interactive browser IDE for RoadC
Universal Computer	Turing machine simulator
Quantum Math Lab	Mathematical computation toolkit

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About BlackRoad OS

BlackRoad OS is a sovereign computing platform that runs AI locally on your own hardware — no cloud dependencies, no API keys, no surveillance. Built by BlackRoad OS, Inc., a Delaware C-Corp founded in 2025.

• Local AI — LLMs on Raspberry Pi, Hailo-8, and commodity hardware
• Mesh networking — WireGuard VPN, NATS pub/sub, peer-to-peer
• Edge computing — 52 TOPS of AI acceleration across a Pi fleet
• Self-hosted everything — Git, DNS, storage, CI/CD, chat
• Zero cloud dependencies — your data stays on your hardware

The BlackRoad ecosystem

Organization	Focus
BlackRoad OS	Core platform and applications
BlackRoad OS, Inc.	Corporate and enterprise
BlackRoad AI	Artificial intelligence and ML
BlackRoad Hardware	Edge hardware and IoT
BlackRoad Security	Cybersecurity and auditing
BlackRoad Quantum	Quantum computing research
BlackRoad Agents	Autonomous AI agents
BlackRoad Network	Mesh and distributed networking
BlackRoad Education	Learning and tutoring platforms
BlackRoad Labs	Research and experiments
BlackRoad Cloud	Self-hosted cloud infrastructure
BlackRoad Forge	Developer tools and utilities

Links — blackroad.io · docs.blackroad.io · chat.blackroad.io · search.blackroad.io

Remember the Road. Pave Tomorrow.