[Lldb-commits] [lldb] [lldb] Realpath symlinks for breakpoints (PR #102223)

[Alex Langford via lldb-commits]

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@@ -0,0 +1,77 @@
+//===-- RealpathPrefixes.h --------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_CORE_REALPATHPREFIXES_H
+#define LLDB_CORE_REALPATHPREFIXES_H
+
+#include "lldb/lldb-forward.h"
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
+#include "llvm/Support/VirtualFileSystem.h"
+
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace lldb_private {
+
+class RealpathPrefixes {
+public:
+  /// \param[in] file_spec_list
+  ///     Prefixes are obtained from FileSpecList, through FileSpec::GetPath(),
+  ///     which ensures that the paths are normalized. For example:
+  ///     "./foo/.." -> ""
+  ///     "./foo/../bar" -> "bar"
+  ///
+  /// \param[in] fs
+  ///     An optional filesystem to use for realpath'ing. If not set, the real
+  ///     filesystem will be used.
+  explicit RealpathPrefixes(const FileSpecList &file_spec_list,
+                            llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fs =
+                                llvm::vfs::getRealFileSystem());
+
+  std::optional<FileSpec> ResolveSymlinks(const FileSpec &file_spec);
+
+  // If/when Statistics.h/cpp is moved into Utility, we can remove these
+  // methods, hold a (weak) pointer to `TargetStats` and directly increment
+  // on that object.
+  void IncreaseSourceRealpathAttemptCount() {
+    ++m_source_realpath_attempt_count;
+  }
+  uint32_t GetSourceRealpathAttemptCount() const {
+    return m_source_realpath_attempt_count;
+  };
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bulbazord wrote:

nit: stray semicolon, this will introduce a compiler warning.

https://github.com/llvm/llvm-project/pull/102223