[PATCH] D65534: [clang] Change FileManager to use llvm::ErrorOr instead of null on failure

[Harlan Haskins via Phabricator via cfe-commits]

harlanhaskins created this revision.
harlanhaskins added reviewers: arphaman, bruno.
Herald added subscribers: lldb-commits, cfe-commits, jsji, kadircet, dexonsmith, jkorous, MaskRay, kbarton, nemanjai.
Herald added a reviewer: martong.
Herald added a reviewer: shafik.
Herald added projects: clang, LLDB.
harlanhaskins edited the summary of this revision.
Herald added subscribers: wuzish, ormris, rnkovacs.

Currently, clang's FileManager uses NULL as an indicator that a particular file
did not exist, but would not propagate errors like permission issues. Instead,
teach FileManager to use llvm::ErrorOr internally and return rich errors for
failures.

This patch updates the existing API and updates the callers throughout clang.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D65534

Files:
  clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
  clang-tools-extra/clang-change-namespace/tool/ClangChangeNamespace.cpp
  clang-tools-extra/clang-include-fixer/IncludeFixer.cpp
  clang-tools-extra/clang-move/Move.cpp
  clang-tools-extra/clang-move/tool/ClangMove.cpp
  clang-tools-extra/clang-reorder-fields/tool/ClangReorderFields.cpp
  clang-tools-extra/clang-tidy/ClangTidy.cpp
  clang-tools-extra/clangd/ClangdUnit.cpp
  clang-tools-extra/clangd/SourceCode.cpp
  clang-tools-extra/clangd/index/SymbolCollector.cpp
  clang-tools-extra/modularize/ModularizeUtilities.cpp
  clang/include/clang/Basic/FileManager.h
  clang/lib/ARCMigrate/FileRemapper.cpp
  clang/lib/ARCMigrate/ObjCMT.cpp
  clang/lib/AST/ASTImporter.cpp
  clang/lib/Basic/FileManager.cpp
  clang/lib/Basic/Module.cpp
  clang/lib/Basic/SourceManager.cpp
  clang/lib/CodeGen/CodeGenAction.cpp
  clang/lib/Frontend/ASTUnit.cpp
  clang/lib/Frontend/CompilerInstance.cpp
  clang/lib/Frontend/FrontendAction.cpp
  clang/lib/Frontend/InitHeaderSearch.cpp
  clang/lib/Frontend/PrecompiledPreamble.cpp
  clang/lib/Frontend/Rewrite/FrontendActions.cpp
  clang/lib/Frontend/TextDiagnostic.cpp
  clang/lib/Lex/HeaderMap.cpp
  clang/lib/Lex/HeaderSearch.cpp
  clang/lib/Lex/ModuleMap.cpp
  clang/lib/Lex/PPDirectives.cpp
  clang/lib/Lex/PPLexerChange.cpp
  clang/lib/Serialization/ASTReader.cpp
  clang/lib/Serialization/GlobalModuleIndex.cpp
  clang/lib/Serialization/ModuleManager.cpp
  clang/lib/Tooling/Core/Replacement.cpp
  clang/lib/Tooling/Refactoring.cpp
  clang/tools/clang-format/ClangFormat.cpp
  clang/tools/clang-import-test/clang-import-test.cpp
  clang/tools/clang-refactor/ClangRefactor.cpp
  clang/tools/clang-refactor/TestSupport.cpp
  clang/tools/clang-rename/ClangRename.cpp
  clang/tools/libclang/CIndex.cpp
  clang/tools/libclang/Indexing.cpp
  clang/unittests/Basic/FileManagerTest.cpp
  clang/unittests/Lex/HeaderSearchTest.cpp
  clang/unittests/Lex/PPCallbacksTest.cpp
  clang/unittests/Tooling/RefactoringTest.cpp
  clang/unittests/Tooling/RewriterTestContext.h
  lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
  lldb/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp

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