Initial implementation

[tolgahan-arikan]

Summary
Initial implementation of gen-c: a webrpc C client generator with separate header / impl output, cJSON +
libcurl runtime support, and a tested client path against current upstream webrpc.

What’s included

• Generates C enums, structs, method wrappers, and init / free helpers
• Generates optional client runtime plus lower-level request preparation / response parsing helpers
• Supports:
  • normal request/response methods
  • succinct methods
  • nested structs, lists, maps
  • any, null, timestamp
  • bigint as JSON string
  • map keys of type string and enum
• Uses cJSON and libcurl for generated impl output
• Includes README, checked example output, and GitHub Actions CI

Not supported

• server generation
• streaming methods
• map keys other than string / enum

Testing

• go test ./...
• smoke generation + C syntax checks
• codec tests
• succinct wire-shape tests
• interop test against upstream webrpc-test
• checked example regeneration in CI

Validation

• Verified locally against webrpc v0.37.1
• Regenerated current waas client from latest waas/master
• Updated downstream c-sdk to the new generated client and validated:
  • build passed
  • tests passed
  • live demo flow succeeded end to end

Notes

• Generated impl output requires cJSON and libcurl
• For precision-sensitive large integers on this target, prefer bigint over int64 / uint64 due to cJSON
  numeric limitations