c2js-compiler

WARNING: This project is in its infancy, and you won't get away with much else than reading the source code currently.

This project is for compiling C to JavaScript.

This project parses the Clang AST from -dump AST and generates JavaScript from it. It does NOT work by translating to LLVM IR first, thereby keeping the source more close to the original.

Contrary to Emscripten and LLJS, it uses closures to simulate pointers instead of arrays with integer indices. This keeps the source more readable, presumably at the expense of performance.

Status

c2js-compiler is specifically targeted at porting Vim to the web, and has so far only been tried on eval.c in the Vim src directory. The resulting JS file loads the definitions in nodejs without errors, but I haven't tried running anything in a Web browser yet.

TODO

• Goto statements and labels.
• JavaScript to C source maps.
• Resolve variable type issues, JavaScript string versus char* etc.
• Compile musl (light libc) and get libraries from Emscripten.
• Implement filesystem (can probably borrow from Emscripten). Use browserfs.
• Compile simple tool and try to run.

TODO Half-ling

• Next version: Hazy Halfling, supporting goto and async
• Interactive timelapse and debugger
• Convert to half-ling AST from clang AST
• Return, break, continue
• Goto
• Async
• Diff interpreter state
• https://github.com/andreyvit/json-diff
• https://github.com/qiao/difflib.js