1 files changed, 53 insertions, 0 deletions
diff --git a/llvm/lib/Support/VirtualOutputError.cpp b/llvm/lib/Support/VirtualOutputError.cpp
new file mode 100644
index 000000000000..74fa5e3fa056
--- /dev/null
+++ b/llvm/lib/Support/VirtualOutputError.cpp
@@ -0,0 +1,53 @@
+//===- VirtualOutputError.cpp - Errors for output virtualization ----------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/VirtualOutputError.h"
+
+using namespace llvm;
+using namespace llvm::vfs;
+
+void OutputError::anchor() {}
+void OutputConfigError::anchor() {}
+void TempFileOutputError::anchor() {}
+
+char OutputError::ID = 0;
+char OutputConfigError::ID = 0;
+char TempFileOutputError::ID = 0;
+
+namespace {
+class OutputErrorCategory : public std::error_category {
+public:
+  const char *name() const noexcept override;
+  std::string message(int EV) const override;
+};
+} // end namespace
+
+const std::error_category &vfs::output_category() {
+  static OutputErrorCategory ErrorCategory;
+  return ErrorCategory;
+}
+
+const char *OutputErrorCategory::name() const noexcept {
+  return "llvm.vfs.output";
+}
+
+std::string OutputErrorCategory::message(int EV) const {
+  OutputErrorCode E = static_cast<OutputErrorCode>(EV);
+  switch (E) {
+  case OutputErrorCode::invalid_config:
+    return "invalid config";
+  case OutputErrorCode::not_closed:
+    return "output not closed";
+  case OutputErrorCode::already_closed:
+    return "output already closed";
+  case OutputErrorCode::has_open_proxy:
+    return "output has open proxy";
+  }
+  llvm_unreachable(
+      "An enumerator of OutputErrorCode does not have a message defined.");
+}