Method constructor

javascript/packages/core/lib/gen/union.ts:36–60

(typeInfo: TypeInfo, builder: CodecBuilder, scope: Scope)

  caseGenerators = new Map<string, SerializerGenerator>();

  constructor(typeInfo: TypeInfo, builder: CodecBuilder, scope: Scope) {
    super(typeInfo, builder, scope);
    this.typeInfo = typeInfo;
    this.detectedSerializer = this.scope.declareVar("detectedSerializer", "null");
    this.writerSerializer = this.scope.declareVar("writerSerializer", "null");

    // Build case-to-type mapping from typeInfo.options.cases
    const cases = typeInfo.options?.cases;
    if (cases) {
      const caseEntries: string[] = [];
      for (const [caseIdx, caseTypeInfo] of Object.entries(cases)) {
        const ti = caseTypeInfo as TypeInfo;
        const isNamed = TypeId.isNamedType(ti._typeId);
        const named = isNamed ? `"${ti.named}"` : "null";
        caseEntries.push(`${caseIdx}: { typeId: ${ti.typeId}, userTypeId: ${ti.userTypeId ?? -1}, named: ${named} }`);
        this.caseGenerators.set(
          caseIdx,
          CodegenRegistry.newGeneratorByTypeInfo(ti, this.builder, this.scope),
        );
      }
      this.caseTypesVar = this.scope.declareVar("caseTypes", `{ ${caseEntries.join(", ")} }`);
    } else {
      this.caseTypesVar = this.scope.declareVar("caseTypes", "null");
    }
  }

  needToWriteRef(): boolean {
    return false;