From 2f0fda7f8c3d5a83629c9aff5f79f946dc5fa592 Mon Sep 17 00:00:00 2001
From: Matt Kuruc <mkuruc@nvidia.com>
Date: Tue, 5 Sep 2023 21:25:38 -0700
Subject: [PATCH] Replace `boost::any` with `std::any` in `pxr/base/tf`

---
 pxr/base/tf/diagnosticBase.h   |  6 +++---
 pxr/base/tf/diagnosticHelper.h | 12 ++++++++++--
 pxr/base/tf/diagnosticMgr.cpp  |  5 ++---
 3 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/pxr/base/tf/diagnosticBase.h b/pxr/base/tf/diagnosticBase.h
index c14d416909..72014beb31 100644
--- a/pxr/base/tf/diagnosticBase.h
+++ b/pxr/base/tf/diagnosticBase.h
@@ -38,13 +38,13 @@
 #include "pxr/base/arch/attributes.h"
 #include "pxr/base/arch/function.h"
 
-#include <boost/any.hpp>
+#include <any>
 #include <cstdarg>
 #include <string>
 
 PXR_NAMESPACE_OPEN_SCOPE
 
-typedef boost::any TfDiagnosticInfo;
+typedef std::any TfDiagnosticInfo;
 
 class TfDiagnosticMgr;
 
@@ -160,7 +160,7 @@ class TfDiagnosticBase {
     /// then GetInfo() returns NULL.
     template <typename T>
     const T* GetInfo() const {
-        return boost::any_cast<T>(&_info);
+        return std::any_cast<T>(&_info);
     }
 
     /// Set the info object associated with this diagnostic message.
diff --git a/pxr/base/tf/diagnosticHelper.h b/pxr/base/tf/diagnosticHelper.h
index f4c6b1592a..b88e0de52f 100644
--- a/pxr/base/tf/diagnosticHelper.h
+++ b/pxr/base/tf/diagnosticHelper.h
@@ -27,17 +27,25 @@
 #include "pxr/pxr.h"
 #include "pxr/base/tf/api.h"
 #include "pxr/base/arch/attributes.h"
+#include "pxr/base/arch/defines.h"
 
 // XXX: This include is a hack to avoid build errors due to
 // incompatible macro definitions in pyport.h on macOS.
 #include <locale>
 
-#include <boost/any.hpp>
+#include <any>
 #include <string>
 
+#if defined(ARCH_OS_LINUX) || defined(ARCH_OS_DARWIN)
+// Include <unistd.h> to provide _exit for tf/debugger.cpp and dependencies
+// that were previously transiently getting this from boost. Follow up changes
+// should more tightly scope this to just where it's needed in pxr.
+#include <unistd.h>
+#endif
+
 PXR_NAMESPACE_OPEN_SCOPE
 
-typedef boost::any TfDiagnosticInfo;
+typedef std::any TfDiagnosticInfo;
 class TfCallContext;
 enum TfDiagnosticType : int;
 class TfEnum;
diff --git a/pxr/base/tf/diagnosticMgr.cpp b/pxr/base/tf/diagnosticMgr.cpp
index e42acffd56..5e9e48dbb8 100644
--- a/pxr/base/tf/diagnosticMgr.cpp
+++ b/pxr/base/tf/diagnosticMgr.cpp
@@ -42,11 +42,10 @@
 #include "pxr/base/arch/stackTrace.h"
 #include "pxr/base/arch/threads.h"
 
-#include <boost/utility.hpp>
-
 #include <signal.h>
 #include <stdlib.h>
 
+#include <any>
 #include <thread>
 #include <memory>
 
@@ -673,7 +672,7 @@ TfDiagnosticMgr::FormatDiagnostic(const TfEnum &code,
 
 #ifdef PXR_PYTHON_SUPPORT_ENABLED
     if (const TfPyExceptionState* exc =
-            boost::any_cast<TfPyExceptionState>(&info)) {
+            std::any_cast<TfPyExceptionState>(&info)) {
         output += TfStringPrintf("%s\n", exc->GetExceptionString().c_str());
     }
 #endif // PXR_PYTHON_SUPPORT_ENABLED