editionFromString function

int editionFromString(String s)

Parses an edition declaration or syntax string into its numeric value.

Accepts the file edition = "..." forms ("2023", "2024", "2026"), the fully-qualified enum names ("EDITION_2023"), and the legacy syntax strings ("proto2", "proto3"). Returns editionUnknown for anything unrecognized (callers decide whether that is an error).

Implementation

int editionFromString(String s) {
  switch (s) {
    case 'proto2':
    case 'EDITION_PROTO2':
      return editionProto2;
    case 'proto3':
    case 'EDITION_PROTO3':
      return editionProto3;
    case '2023':
    case 'EDITION_2023':
      return edition2023;
    case '2024':
    case 'EDITION_2024':
      return edition2024;
    case '2026':
    case 'EDITION_2026':
      return edition2026;
    case 'EDITION_LEGACY':
      return editionLegacy;
    default:
      return editionUnknown;
  }
}