debug: add support for kstd::observer_ptr

2 files changed, 23 insertions, 1 deletions

diff --git a/libs/kstd/gdb/__init__.py b/libs/kstd/gdb/__init__.py
index 2d61539..c5d1e53 100644
--- a/libs/kstd/gdb/__init__.py
+++ b/libs/kstd/gdb/__init__.py
@@ -2,7 +2,11 @@ import gdb.printing
 
 from .vector import KstdVectorPrinter
 from .string import KstdStringPrinter
-from .smart_pointers import KstdUniquePtrPrinter, KstdSharedPtrPrinter
+from .smart_pointers import (
+    KstdUniquePtrPrinter,
+    KstdSharedPtrPrinter,
+    KstdObserverPtrPrinter,
+)
 
 
 def build_pretty_printers():
@@ -11,6 +15,7 @@ def build_pretty_printers():
     pp.add_printer("string", "^kstd::string$", KstdStringPrinter)
     pp.add_printer("unique_ptr", "^kstd::unique_ptr<.*>$", KstdUniquePtrPrinter)
     pp.add_printer("shared_ptr", "^kstd::shared_ptr<.*>$", KstdSharedPtrPrinter)
+    pp.add_printer("observer_ptr", "^kstd::observer_ptr<.*>$", KstdObserverPtrPrinter)
     return pp
 
 
diff --git a/libs/kstd/gdb/smart_pointers.py b/libs/kstd/gdb/smart_pointers.py
index b94d466..f6e8a45 100644
--- a/libs/kstd/gdb/smart_pointers.py
+++ b/libs/kstd/gdb/smart_pointers.py
@@ -49,3 +49,20 @@ class KstdSharedPtrPrinter(gdb.ValuePrinter):
 
     def display_hint(self):
         return None
+
+
+class KstdObserverPtrPrinter(gdb.ValuePrinter):
+    def __init__(self, val):
+        self.__val = val
+        self.__type = val.type.template_argument(0)
+        self.__pointer = val["m_ptr"]
+
+    def to_string(self):
+        return f"{(self.__pointer)}"
+
+    def children(self):
+        if int(self.__pointer) != 0:
+            yield ("get()", self.__pointer.dereference())
+
+    def display_hint(self):
+        return None