kern: simplify print wrappers

1 files changed, 10 insertions, 35 deletions

diff --git a/kern/src/print.cpp b/kern/src/print.cpp
index 64e2c65..2c8539b 100644
--- a/kern/src/print.cpp
+++ b/kern/src/print.cpp
@@ -7,43 +7,18 @@ namespace teachos
 {
   namespace
   {
-    print_handler * current_print_handler{};
-    println_handler * current_println_handler{};
-    print_handler * current_print_error_handler{};
-    println_handler * current_println_error_handler{};
-  }  // namespace
-
-  auto print(std::string_view text) -> void
-  {
-    if (current_print_handler)
-    {
-      current_print_handler(text);
-    }
-  }
-
-  auto println(std::string_view text) -> void
-  {
-    if (current_println_handler)
-    {
-      current_println_handler(text);
-    }
-  }
+    constinit auto noop = [](std::string_view) {};
 
-  auto print_error(std::string_view text) -> void
-  {
-    if (current_print_error_handler)
-    {
-      current_print_error_handler(text);
-    }
-  }
+    constinit auto current_print_handler = static_cast<print_handler *>(noop);
+    constinit auto current_println_handler = static_cast<println_handler *>(noop);
+    constinit auto current_print_error_handler = static_cast<print_handler *>(noop);
+    constinit auto current_println_error_handler = static_cast<println_handler *>(noop);
+  }  // namespace
 
-  auto println_error(std::string_view text) -> void
-  {
-    if (current_println_error_handler)
-    {
-      current_println_error_handler(text);
-    }
-  }
+  auto print(std::string_view text) -> void { current_print_handler(text); }
+  auto println(std::string_view text) -> void { current_println_handler(text); }
+  auto print_error(std::string_view text) -> void { current_print_error_handler(text); }
+  auto println_error(std::string_view text) -> void { current_println_error_handler(text); }
 
   auto set_print_handler(print_handler handler) -> print_handler *
   {