[clang-tools-extra] [clang-doc] [feat] add --repository-line-prefix argument (PR #131280)

[Paul Kirth via cfe-commits]

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@@ -490,15 +490,17 @@ genReferencesBlock(const std::vector<Reference> &References,
   }
   return Out;
 }
-
 static std::unique_ptr<TagNode>
-writeFileDefinition(const Location &L,
-                    std::optional<StringRef> RepositoryUrl = std::nullopt) {
-  if (!L.IsFileInRootDir && !RepositoryUrl)
+writeFileDefinition(const ClangDocContext &CDCtx, const Location &L) {
+  std::string RepositoryUrl = CDCtx.RepositoryUrl.value_or("");
+  std::string RepositoryLinePrefix = CDCtx.RepositoryLinePrefix.value_or("");
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ilovepi wrote:

Why introduce string copies? You're also making a `SmallString` below using the same data, so its not only extra copy operations, its now heap allocations too.

https://github.com/llvm/llvm-project/pull/131280