[clang-tools-extra] r323658 - [clangd] Add a fallback directory for collected symbols with relative paths.

Eric Liu via cfe-commits cfe-commits at lists.llvm.org
Mon Jan 29 14:30:35 PST 2018


Thanks Galina! r323703 should fix this.

On Mon, Jan 29, 2018 at 11:09 PM Galina Kistanova <gkistanova at gmail.com>
wrote:

> Hello Eric,
>
> It look like some of your recent commits broke the test on one of our
> builders:
>
> http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast
> . . .
> Failing Tests (1):
>     Extra Tools Unit Tests ::
> clangd/./ClangdTests.exe/SymbolCollectorTest.SymbolRelativeWithFallback
>
> The builder was already red and did not send notifications on the changes.
> Please have a look?
>
> Thanks
>
>
> Galina
>
> On Mon, Jan 29, 2018 at 7:13 AM, Eric Liu via cfe-commits <
> cfe-commits at lists.llvm.org> wrote:
>
>> Author: ioeric
>> Date: Mon Jan 29 07:13:29 2018
>> New Revision: 323658
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=323658&view=rev
>> Log:
>> [clangd] Add a fallback directory for collected symbols with relative
>> paths.
>>
>> Reviewers: hokein, sammccall
>>
>> Subscribers: klimek, ilya-biryukov, jkorous-apple, cfe-commits
>>
>> Differential Revision: https://reviews.llvm.org/D42638
>>
>> Modified:
>>
>> clang-tools-extra/trunk/clangd/global-symbol-builder/GlobalSymbolBuilderMain.cpp
>>     clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp
>>     clang-tools-extra/trunk/clangd/index/SymbolCollector.h
>>     clang-tools-extra/trunk/unittests/clangd/SymbolCollectorTests.cpp
>>
>> Modified:
>> clang-tools-extra/trunk/clangd/global-symbol-builder/GlobalSymbolBuilderMain.cpp
>> URL:
>> http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clangd/global-symbol-builder/GlobalSymbolBuilderMain.cpp?rev=323658&r1=323657&r2=323658&view=diff
>>
>> ==============================================================================
>> ---
>> clang-tools-extra/trunk/clangd/global-symbol-builder/GlobalSymbolBuilderMain.cpp
>> (original)
>> +++
>> clang-tools-extra/trunk/clangd/global-symbol-builder/GlobalSymbolBuilderMain.cpp
>> Mon Jan 29 07:13:29 2018
>> @@ -35,6 +35,14 @@ using clang::clangd::SymbolSlab;
>>  namespace clang {
>>  namespace clangd {
>>
>> +static llvm::cl::opt<std::string> AssumedHeaderDir(
>> +    "assume-header-dir",
>> +    llvm::cl::desc("The index includes header that a symbol is defined
>> in. "
>> +                   "If the absolute path cannot be determined (e.g. an "
>> +                   "in-memory VFS) then the relative path is resolved
>> against "
>> +                   "this directory, which must be absolute. If this flag
>> is "
>> +                   "not given, such headers will have relative paths."));
>> +
>>  class SymbolIndexActionFactory : public tooling::FrontendActionFactory {
>>  public:
>>    SymbolIndexActionFactory(tooling::ExecutionContext *Ctx) : Ctx(Ctx) {}
>> @@ -72,9 +80,11 @@ public:
>>      IndexOpts.SystemSymbolFilter =
>>          index::IndexingOptions::SystemSymbolFilterKind::All;
>>      IndexOpts.IndexFunctionLocals = false;
>> +    auto CollectorOpts = SymbolCollector::Options();
>> +    CollectorOpts.FallbackDir = AssumedHeaderDir;
>>      return new WrappedIndexAction(
>> -        std::make_shared<SymbolCollector>(SymbolCollector::Options()),
>> -        IndexOpts, Ctx);
>> +        std::make_shared<SymbolCollector>(std::move(CollectorOpts)),
>> IndexOpts,
>> +        Ctx);
>>    }
>>
>>    tooling::ExecutionContext *Ctx;
>> @@ -98,6 +108,12 @@ int main(int argc, const char **argv) {
>>      return 1;
>>    }
>>
>> +  if (!clang::clangd::AssumedHeaderDir.empty() &&
>> +      !llvm::sys::path::is_absolute(clang::clangd::AssumedHeaderDir)) {
>> +    llvm::errs() << "--assume-header-dir must be an absolute path.\n";
>> +    return 1;
>> +  }
>> +
>>    auto Err = Executor->get()->execute(
>>        llvm::make_unique<clang::clangd::SymbolIndexActionFactory>(
>>            Executor->get()->getExecutionContext()));
>>
>> Modified: clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp
>> URL:
>> http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp?rev=323658&r1=323657&r2=323658&view=diff
>>
>> ==============================================================================
>> --- clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp (original)
>> +++ clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp Mon Jan 29
>> 07:13:29 2018
>> @@ -14,6 +14,7 @@
>>  #include "clang/Basic/SourceManager.h"
>>  #include "clang/Index/IndexSymbol.h"
>>  #include "clang/Index/USRGeneration.h"
>> +#include "llvm/Support/FileSystem.h"
>>  #include "llvm/Support/MemoryBuffer.h"
>>  #include "llvm/Support/Path.h"
>>
>> @@ -22,36 +23,42 @@ namespace clangd {
>>
>>  namespace {
>>  // Make the Path absolute using the current working directory of the
>> given
>> -// SourceManager if the Path is not an absolute path.
>> +// SourceManager if the Path is not an absolute path. If failed, this
>> combine
>> +// relative paths with \p FallbackDir to get an absolute path.
>>  //
>>  // The Path can be a path relative to the build directory, or retrieved
>> from
>>  // the SourceManager.
>> -std::string makeAbsolutePath(const SourceManager &SM, StringRef Path) {
>> +std::string makeAbsolutePath(const SourceManager &SM, StringRef Path,
>> +                             StringRef FallbackDir) {
>>    llvm::SmallString<128> AbsolutePath(Path);
>>    if (std::error_code EC =
>>            SM.getFileManager().getVirtualFileSystem()->makeAbsolute(
>>                AbsolutePath))
>>      llvm::errs() << "Warning: could not make absolute file: '" <<
>> EC.message()
>>                   << '\n';
>> -  // Handle the symbolic link path case where the current working
>> directory
>> -  // (getCurrentWorkingDirectory) is a symlink./ We always want to the
>> real
>> -  // file path (instead of the symlink path) for the  C++ symbols.
>> -  //
>> -  // Consider the following example:
>> -  //
>> -  //   src dir: /project/src/foo.h
>> -  //   current working directory (symlink): /tmp/build -> /project/src/
>> -  //
>> -  // The file path of Symbol is "/project/src/foo.h" instead of
>> -  // "/tmp/build/foo.h"
>> -  const DirectoryEntry *Dir = SM.getFileManager().getDirectory(
>> -      llvm::sys::path::parent_path(AbsolutePath.str()));
>> -  if (Dir) {
>> -    StringRef DirName = SM.getFileManager().getCanonicalName(Dir);
>> -    SmallString<128> AbsoluteFilename;
>> -    llvm::sys::path::append(AbsoluteFilename, DirName,
>> -
>> llvm::sys::path::filename(AbsolutePath.str()));
>> -    return AbsoluteFilename.str();
>> +  if (llvm::sys::path::is_absolute(AbsolutePath)) {
>> +    // Handle the symbolic link path case where the current working
>> directory
>> +    // (getCurrentWorkingDirectory) is a symlink./ We always want to the
>> real
>> +    // file path (instead of the symlink path) for the  C++ symbols.
>> +    //
>> +    // Consider the following example:
>> +    //
>> +    //   src dir: /project/src/foo.h
>> +    //   current working directory (symlink): /tmp/build -> /project/src/
>> +    //
>> +    // The file path of Symbol is "/project/src/foo.h" instead of
>> +    // "/tmp/build/foo.h"
>> +    if (const DirectoryEntry *Dir = SM.getFileManager().getDirectory(
>> +            llvm::sys::path::parent_path(AbsolutePath.str()))) {
>> +      StringRef DirName = SM.getFileManager().getCanonicalName(Dir);
>> +      SmallString<128> AbsoluteFilename;
>> +      llvm::sys::path::append(AbsoluteFilename, DirName,
>> +
>> llvm::sys::path::filename(AbsolutePath.str()));
>> +      AbsolutePath = AbsoluteFilename;
>> +    }
>> +  } else if (!FallbackDir.empty()) {
>> +    llvm::sys::fs::make_absolute(FallbackDir, AbsolutePath);
>> +    llvm::sys::path::remove_dots(AbsolutePath, /*remove_dot_dot=*/true);
>>    }
>>    return AbsolutePath.str();
>>  }
>> @@ -142,8 +149,8 @@ bool SymbolCollector::handleDeclOccurenc
>>        return true;
>>
>>      auto &SM = ND->getASTContext().getSourceManager();
>> -    std::string FilePath =
>> -        makeAbsolutePath(SM, SM.getFilename(D->getLocation()));
>> +    std::string FilePath = makeAbsolutePath(
>> +        SM, SM.getFilename(D->getLocation()), Opts.FallbackDir);
>>      SymbolLocation Location = {FilePath,
>> SM.getFileOffset(D->getLocStart()),
>>                                 SM.getFileOffset(D->getLocEnd())};
>>      std::string QName = ND->getQualifiedNameAsString();
>>
>> Modified: clang-tools-extra/trunk/clangd/index/SymbolCollector.h
>> URL:
>> http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clangd/index/SymbolCollector.h?rev=323658&r1=323657&r2=323658&view=diff
>>
>> ==============================================================================
>> --- clang-tools-extra/trunk/clangd/index/SymbolCollector.h (original)
>> +++ clang-tools-extra/trunk/clangd/index/SymbolCollector.h Mon Jan 29
>> 07:13:29 2018
>> @@ -30,6 +30,10 @@ public:
>>      /// Whether to collect symbols in main files (e.g. the source file
>>      /// corresponding to a TU).
>>      bool IndexMainFiles = false;
>> +    // When symbol paths cannot be resolved to absolute paths (e.g.
>> files in
>> +    // VFS that does not have absolute path), combine the fallback
>> directory
>> +    // with symbols' paths to get absolute paths. This must be an
>> absolute path.
>> +    std::string FallbackDir;
>>    };
>>
>>    SymbolCollector(Options Opts);
>>
>> Modified:
>> clang-tools-extra/trunk/unittests/clangd/SymbolCollectorTests.cpp
>> URL:
>> http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/unittests/clangd/SymbolCollectorTests.cpp?rev=323658&r1=323657&r2=323658&view=diff
>>
>> ==============================================================================
>> --- clang-tools-extra/trunk/unittests/clangd/SymbolCollectorTests.cpp
>> (original)
>> +++ clang-tools-extra/trunk/unittests/clangd/SymbolCollectorTests.cpp Mon
>> Jan 29 07:13:29 2018
>> @@ -44,6 +44,7 @@ MATCHER_P(Snippet, S, "") {
>>    return arg.CompletionSnippetInsertText == S;
>>  }
>>  MATCHER_P(QName, Name, "") { return (arg.Scope + arg.Name).str() ==
>> Name; }
>> +MATCHER_P(Path, P, "") { return arg.CanonicalDeclaration.FilePath == P; }
>>
>>  namespace clang {
>>  namespace clangd {
>> @@ -145,18 +146,25 @@ TEST_F(SymbolCollectorTest, CollectSymbo
>>    runSymbolCollector(Header, Main);
>>    EXPECT_THAT(Symbols,
>>                UnorderedElementsAreArray(
>> -                  {QName("Foo"),
>> -                   QName("f1"),
>> -                   QName("f2"),
>> -                   QName("KInt"),
>> -                   QName("kStr"),
>> -                   QName("foo"),
>> -                   QName("foo::bar"),
>> -                   QName("foo::int32"),
>> -                   QName("foo::int32_t"),
>> -                   QName("foo::v1"),
>> -                   QName("foo::bar::v2"),
>> -                   QName("foo::baz")}));
>> +                  {QName("Foo"), QName("f1"), QName("f2"), QName("KInt"),
>> +                   QName("kStr"), QName("foo"), QName("foo::bar"),
>> +                   QName("foo::int32"), QName("foo::int32_t"),
>> QName("foo::v1"),
>> +                   QName("foo::bar::v2"), QName("foo::baz")}));
>> +}
>> +
>> +TEST_F(SymbolCollectorTest, SymbolRelativeNoFallback) {
>> +  CollectorOpts.IndexMainFiles = false;
>> +  runSymbolCollector("class Foo {};", /*Main=*/"");
>> +  EXPECT_THAT(Symbols,
>> +              UnorderedElementsAre(AllOf(QName("Foo"),
>> Path("symbols.h"))));
>> +}
>> +
>> +TEST_F(SymbolCollectorTest, SymbolRelativeWithFallback) {
>> +  CollectorOpts.IndexMainFiles = false;
>> +  CollectorOpts.FallbackDir = "/cwd";
>> +  runSymbolCollector("class Foo {};", /*Main=*/"");
>> +  EXPECT_THAT(Symbols, UnorderedElementsAre(
>> +                           AllOf(QName("Foo"), Path("/cwd/symbols.h"))));
>>  }
>>
>>  TEST_F(SymbolCollectorTest, IncludeEnums) {
>>
>>
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>
>
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