Function switch

packages/effect/src/Schema.ts:15097–15111

(ast._tag)

function toCodecIsoASTStep(ast: SchemaAST.AST, recur: (ast: SchemaAST.AST) => SchemaAST.AST): SchemaAST.AST {
  switch (ast._tag) {
    case "Declaration": {
      const getLink = ast.annotations?.toCodecIso ?? ast.annotations?.toCodec
      if (Predicate.isFunction(getLink)) {
        const link = getLink(ast.typeParameters.map((tp) => InternalSchema.make(tp)))
        return SchemaAST.replaceEncoding(ast, [SchemaAST.mapLink(link, recur)])
      }
      return ast
    }
    case "Arrays":
    case "Objects":
    case "Union":
    case "Suspend":
      return ast.recur(recur)
  }
  return ast
}