[clangd] Set SymbolID for sema macros so that they can be merged with index macros.
Reviewers: sammccall
Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, cfe-commits
Differential Revision: https://reviews.llvm.org/D51688
llvm-svn: 341534
diff --git a/clang-tools-extra/clangd/AST.cpp b/clang-tools-extra/clangd/AST.cpp
index 1344931..661c6aa 100644
--- a/clang-tools-extra/clangd/AST.cpp
+++ b/clang-tools-extra/clangd/AST.cpp
@@ -61,5 +61,16 @@
return SymbolID(USR);
}
+llvm::Optional<SymbolID> getSymbolID(const IdentifierInfo &II,
+ const MacroInfo *MI,
+ const SourceManager &SM) {
+ if (MI == nullptr)
+ return None;
+ llvm::SmallString<128> USR;
+ if (index::generateUSRForMacro(II.getName(), MI->getDefinitionLoc(), SM, USR))
+ return None;
+ return SymbolID(USR);
+}
+
} // namespace clangd
} // namespace clang
diff --git a/clang-tools-extra/clangd/AST.h b/clang-tools-extra/clangd/AST.h
index 9f00f82..88244f3 100644
--- a/clang-tools-extra/clangd/AST.h
+++ b/clang-tools-extra/clangd/AST.h
@@ -37,6 +37,17 @@
/// Gets the symbol ID for a declaration, if possible.
llvm::Optional<SymbolID> getSymbolID(const Decl *D);
+/// Gets the symbol ID for a macro, if possible.
+/// Currently, this is an encoded USR of the macro, which incorporates macro
+/// locations (e.g. file name, offset in file).
+/// FIXME: the USR semantics might not be stable enough as the ID for index
+/// macro (e.g. a change in definition offset can result in a different USR). We
+/// could change these semantics in the future by reimplementing this funcure
+/// (e.g. avoid USR for macros).
+llvm::Optional<SymbolID> getSymbolID(const IdentifierInfo &II,
+ const MacroInfo *MI,
+ const SourceManager &SM);
+
} // namespace clangd
} // namespace clang
diff --git a/clang-tools-extra/clangd/CodeComplete.cpp b/clang-tools-extra/clangd/CodeComplete.cpp
index 73357d8..19ebd30 100644
--- a/clang-tools-extra/clangd/CodeComplete.cpp
+++ b/clang-tools-extra/clangd/CodeComplete.cpp
@@ -505,14 +505,15 @@
};
// Determine the symbol ID for a Sema code completion result, if possible.
-llvm::Optional<SymbolID> getSymbolID(const CodeCompletionResult &R) {
+llvm::Optional<SymbolID> getSymbolID(const CodeCompletionResult &R,
+ const SourceManager &SM) {
switch (R.Kind) {
case CodeCompletionResult::RK_Declaration:
case CodeCompletionResult::RK_Pattern: {
return clang::clangd::getSymbolID(R.Declaration);
}
case CodeCompletionResult::RK_Macro:
- // FIXME: Macros do have USRs, but the CCR doesn't contain enough info.
+ return clang::clangd::getSymbolID(*R.Macro, R.MacroDefInfo, SM);
case CodeCompletionResult::RK_Keyword:
return None;
}
@@ -1435,7 +1436,8 @@
llvm::DenseSet<const Symbol *> UsedIndexResults;
auto CorrespondingIndexResult =
[&](const CodeCompletionResult &SemaResult) -> const Symbol * {
- if (auto SymID = getSymbolID(SemaResult)) {
+ if (auto SymID =
+ getSymbolID(SemaResult, Recorder->CCSema->getSourceManager())) {
auto I = IndexResults.find(*SymID);
if (I != IndexResults.end()) {
UsedIndexResults.insert(&*I);
diff --git a/clang-tools-extra/clangd/index/SymbolCollector.cpp b/clang-tools-extra/clangd/index/SymbolCollector.cpp
index 7a83243..ee24cf7 100644
--- a/clang-tools-extra/clangd/index/SymbolCollector.cpp
+++ b/clang-tools-extra/clangd/index/SymbolCollector.cpp
@@ -385,18 +385,16 @@
Roles & static_cast<unsigned>(index::SymbolRole::Definition)))
return true;
- llvm::SmallString<128> USR;
- if (index::generateUSRForMacro(Name->getName(), MI->getDefinitionLoc(), SM,
- USR))
+ auto ID = getSymbolID(*Name, MI, SM);
+ if (!ID)
return true;
- SymbolID ID(USR);
// Only collect one instance in case there are multiple.
- if (Symbols.find(ID) != nullptr)
+ if (Symbols.find(*ID) != nullptr)
return true;
Symbol S;
- S.ID = std::move(ID);
+ S.ID = std::move(*ID);
S.Name = Name->getName();
S.IsIndexedForCodeCompletion = true;
S.SymInfo = index::getSymbolInfoForMacro(*MI);
@@ -445,11 +443,9 @@
if (Opts.CollectMacro) {
assert(PP);
for (const IdentifierInfo *II : ReferencedMacros) {
- llvm::SmallString<128> USR;
if (const auto *MI = PP->getMacroDefinition(II).getMacroInfo())
- if (!index::generateUSRForMacro(II->getName(), MI->getDefinitionLoc(),
- PP->getSourceManager(), USR))
- IncRef(SymbolID(USR));
+ if (auto ID = getSymbolID(*II, MI, PP->getSourceManager()))
+ IncRef(*ID);
}
}