From 3a967fed3cbbb706fd723b7752d28094fea7fcb1 Mon Sep 17 00:00:00 2001
From: Egor Tensin <egor@tensin.name>
Date: Fri, 5 Jun 2026 00:03:59 +0200
Subject: upgrade to nested namespaces

---
 include/winapi/error.hpp             | 6 ++----
 include/winapi/process_io.hpp        | 6 ++----
 src/error.cpp                        | 6 ++----
 src/process_io.cpp                   | 6 ++----
 test/unit_tests/shared/test_data.hpp | 6 ++----
 5 files changed, 10 insertions(+), 20 deletions(-)

diff --git a/include/winapi/error.hpp b/include/winapi/error.hpp
index 30237e3..259c18b 100644
--- a/include/winapi/error.hpp
+++ b/include/winapi/error.hpp
@@ -18,8 +18,7 @@
 #include <string>
 #include <system_error>
 
-namespace winapi {
-namespace error {
+namespace winapi::error {
 
 class CategoryWindows : public std::error_category {
 public:
@@ -47,5 +46,4 @@ std::runtime_error custom(Ret ret, const char* function) {
     return std::runtime_error{std::format("Function {} failed with error code {}", function, ret)};
 }
 
-} // namespace error
-} // namespace winapi
+} // namespace winapi::error
diff --git a/include/winapi/process_io.hpp b/include/winapi/process_io.hpp
index 9da442f..ac678e6 100644
--- a/include/winapi/process_io.hpp
+++ b/include/winapi/process_io.hpp
@@ -12,8 +12,7 @@
 #include <string_view>
 #include <utility>
 
-namespace winapi {
-namespace process {
+namespace winapi::process {
 
 struct Stream {
     Stream(Handle&& handle) : handle{std::move(handle)} {}
@@ -68,5 +67,4 @@ struct IO {
     Stderr std_err;
 };
 
-} // namespace process
-} // namespace winapi
+} // namespace winapi::process
diff --git a/src/error.cpp b/src/error.cpp
index afc33f3..7266e63 100644
--- a/src/error.cpp
+++ b/src/error.cpp
@@ -14,8 +14,7 @@
 #include <string_view>
 #include <system_error>
 
-namespace winapi {
-namespace error {
+namespace winapi::error {
 namespace {
 
 std::wstring trim_trailing_newline(std::wstring_view s) {
@@ -64,5 +63,4 @@ std::system_error windows(DWORD code, const char* function) {
         static_cast<int32_t>(code), category_windows(), build_what(code, function)};
 }
 
-} // namespace error
-} // namespace winapi
+} // namespace winapi::error
diff --git a/src/process_io.cpp b/src/process_io.cpp
index 1162049..dd227b3 100644
--- a/src/process_io.cpp
+++ b/src/process_io.cpp
@@ -11,8 +11,7 @@
 #include <string_view>
 #include <utility>
 
-namespace winapi {
-namespace process {
+namespace winapi::process {
 
 Stdin::Stdin() : Stream{Handle::std_in()} {}
 
@@ -50,5 +49,4 @@ void IO::close() {
     std_err.handle.close();
 }
 
-} // namespace process
-} // namespace winapi
+} // namespace winapi::process
diff --git a/test/unit_tests/shared/test_data.hpp b/test/unit_tests/shared/test_data.hpp
index 1c8316a..7b8caf6 100644
--- a/test/unit_tests/shared/test_data.hpp
+++ b/test/unit_tests/shared/test_data.hpp
@@ -7,8 +7,7 @@
 
 #include <string>
 
-namespace worker {
-namespace test_data {
+namespace worker::test_data {
 
 static constexpr auto str = "Test output.";
 
@@ -20,5 +19,4 @@ inline std::string err() {
     return "stderr: " + std::string{str};
 }
 
-} // namespace test_data
-} // namespace worker
+} // namespace worker::test_data
-- 
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