Function EXPECTED_TRY

lib/loader/ast/component/component_declarator.cpp:50–53

  //                   | 0x03 e:<core:exportdecl> => e

  EXPECTED_TRY(uint8_t Flag, FMgr.readByte().map_error([this](auto E) {
    return logLoadError(E, FMgr.getLastOffset(),
                        ASTNodeAttr::Comp_Decl_CoreModule);
  }));
  switch (Flag) {
  case 0x00: {
    AST::Component::CoreImportDecl ImpDecl;