js/loader/ResolveResult.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef js_loader_ResolveResult_h
   8 #define js_loader_ResolveResult_h
   9
  10 #include "mozilla/ResultVariant.h"
  11 #include "mozilla/NotNull.h"
  12 #include "nsIURI.h"
  13
  14 namespace JS::loader {
  15
  16 enum class ResolveError : uint8_t {
  17   ModuleResolveFailure,
  18   BlockedByNullEntry,
  19   BlockedByAfterPrefix,
  20   BlockedByBacktrackingPrefix,
  21   InvalidBareSpecifier
  22 };
  23
  24 struct ResolveErrorInfo {
  25   static const char* GetString(ResolveError aError) {
  26     switch (aError) {
  27       case ResolveError::ModuleResolveFailure:
  28         return "ModuleResolveFailure";
  29       case ResolveError::BlockedByNullEntry:
  30         return "ImportMapResolutionBlockedByNullEntry";
  31       case ResolveError::BlockedByAfterPrefix:
  32         return "ImportMapResolutionBlockedByAfterPrefix";
  33       case ResolveError::BlockedByBacktrackingPrefix:
  34         return "ImportMapResolutionBlockedByBacktrackingPrefix";
  35       case ResolveError::InvalidBareSpecifier:
  36         return "ImportMapResolveInvalidBareSpecifier";
  37       default:
  38         MOZ_CRASH("Unexpected ResolveError value");
  39     }
  40   }
  41 };
  42
  43 /**
  44  * ResolveResult is used to store the result of 'resolving a module specifier',
  45  * which could be an URI on success or a ResolveError on failure.
  46  */
  47 using ResolveResult =
  48     mozilla::Result<mozilla::NotNull<nsCOMPtr<nsIURI>>, ResolveError>;
  49 }  // namespace JS::loader
  50
  51 #endif  // js_loader_ResolveResult_h