Code quality: Fix header guards consistency

Adds `header_guards.sh` bash script, used in CI to validate future
changes. Can be run locally to fix invalid header guards.

21 files changed, 32 insertions, 26 deletions

diff --git a/core/core_constants.h b/core/core_constants.h
index d5b3b156b2..5e05b7a931 100644
--- a/core/core_constants.h
+++ b/core/core_constants.h
@@ -42,4 +42,4 @@ public:
 	static int64_t get_global_constant_value(int p_idx);
 };
 
-#endif // GLOBAL_CONSTANTS_H
+#endif // CORE_CONSTANTS_H
diff --git a/core/crypto/crypto_core.h b/core/crypto/crypto_core.h
index eacef268cc..008e9e92b5 100644
--- a/core/crypto/crypto_core.h
+++ b/core/crypto/crypto_core.h
@@ -115,4 +115,5 @@ public:
 	static Error sha1(const uint8_t *p_src, int p_src_len, unsigned char r_hash[20]);
 	static Error sha256(const uint8_t *p_src, int p_src_len, unsigned char r_hash[32]);
 };
+
 #endif // CRYPTO_CORE_H
diff --git a/core/debugger/debugger_marshalls.h b/core/debugger/debugger_marshalls.h
index 378c3af8aa..751e8a6371 100644
--- a/core/debugger/debugger_marshalls.h
+++ b/core/debugger/debugger_marshalls.h
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef DEBUGGER_MARSHARLLS_H
-#define DEBUGGER_MARSHARLLS_H
+#ifndef DEBUGGER_MARSHALLS_H
+#define DEBUGGER_MARSHALLS_H
 
 #include "core/object/script_language.h"
 
@@ -69,4 +69,4 @@ struct DebuggerMarshalls {
 	};
 };
 
-#endif // DEBUGGER_MARSHARLLS_H
+#endif // DEBUGGER_MARSHALLS_H
diff --git a/core/extension/extension_api_dump.h b/core/extension/extension_api_dump.h
index 7346e182f1..1bc455ea67 100644
--- a/core/extension/extension_api_dump.h
+++ b/core/extension/extension_api_dump.h
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef API_DUMP_H
-#define API_DUMP_H
+#ifndef EXTENSION_API_DUMP_H
+#define EXTENSION_API_DUMP_H
 
 #include "core/extension/native_extension.h"
 
@@ -42,4 +42,4 @@ public:
 };
 #endif
 
-#endif // API_DUMP_H
+#endif // EXTENSION_API_DUMP_H
diff --git a/core/extension/gdnative_interface.h b/core/extension/gdnative_interface.h
index dd86abe053..041a6e5112 100644
--- a/core/extension/gdnative_interface.h
+++ b/core/extension/gdnative_interface.h
@@ -582,4 +582,4 @@ typedef GDNativeBool (*GDNativeInitializationFunction)(const GDNativeInterface *
 }
 #endif
 
-#endif
+#endif // GDNATIVE_INTERFACE_H
diff --git a/core/extension/native_extension.h b/core/extension/native_extension.h
index ca50f78621..b7238d2899 100644
--- a/core/extension/native_extension.h
+++ b/core/extension/native_extension.h
@@ -97,4 +97,4 @@ public:
 	virtual String get_resource_type(const String &p_path) const;
 };
 
-#endif // NATIVEEXTENSION_H
+#endif // NATIVE_EXTENSION_H
diff --git a/core/extension/native_extension_manager.h b/core/extension/native_extension_manager.h
index 5594f6c0de..ed80cd6b7a 100644
--- a/core/extension/native_extension_manager.h
+++ b/core/extension/native_extension_manager.h
@@ -71,4 +71,4 @@ public:
 
 VARIANT_ENUM_CAST(NativeExtensionManager::LoadStatus)
 
-#endif // NATIVEEXTENSIONMANAGER_H
+#endif // NATIVE_EXTENSION_MANAGER_H
diff --git a/core/input/shortcut.h b/core/input/shortcut.h
index 0c9689cdcb..daec410039 100644
--- a/core/input/shortcut.h
+++ b/core/input/shortcut.h
@@ -55,4 +55,5 @@ public:
 
 	static bool is_event_array_equal(const Array &p_event_array1, const Array &p_event_array2);
 };
+
 #endif // SHORTCUT_H
diff --git a/core/io/packet_peer.h b/core/io/packet_peer.h
index 0b12640627..ec9d33aa5a 100644
--- a/core/io/packet_peer.h
+++ b/core/io/packet_peer.h
@@ -127,4 +127,4 @@ public:
 	PacketPeerStream();
 };
 
-#endif // PACKET_STREAM_H
+#endif // PACKET_PEER_H
diff --git a/core/io/resource_uid.h b/core/io/resource_uid.h
index da42553cf5..0da37e2716 100644
--- a/core/io/resource_uid.h
+++ b/core/io/resource_uid.h
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef RESOURCE_UUID_H
-#define RESOURCE_UUID_H
+#ifndef RESOURCE_UID_H
+#define RESOURCE_UID_H
 
 #include "core/object/ref_counted.h"
 #include "core/string/string_name.h"
@@ -85,4 +85,4 @@ public:
 	~ResourceUID();
 };
 
-#endif // RESOURCEUUID_H
+#endif // RESOURCE_UID_H
diff --git a/core/math/projection.h b/core/math/projection.h
index ff65271417..a3d2d7720b 100644
--- a/core/math/projection.h
+++ b/core/math/projection.h
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef CAMERA_MATRIX_H
-#define CAMERA_MATRIX_H
+#ifndef PROJECTION_H
+#define PROJECTION_H
 
 #include "core/math/math_defs.h"
 #include "core/math/vector3.h"
@@ -164,4 +164,4 @@ Vector3 Projection::xform(const Vector3 &p_vec3) const {
 	return ret / w;
 }
 
-#endif // CAMERA_MATRIX_H
+#endif // PROJECTION_H
diff --git a/core/math/vector4.h b/core/math/vector4.h
index 7dd8d7aff5..645c51db87 100644
--- a/core/math/vector4.h
+++ b/core/math/vector4.h
@@ -272,4 +272,5 @@ _FORCE_INLINE_ Vector4 operator*(const int32_t p_scalar, const Vector4 &p_vec) {
 _FORCE_INLINE_ Vector4 operator*(const int64_t p_scalar, const Vector4 &p_vec) {
 	return p_vec * p_scalar;
 }
+
 #endif // VECTOR4_H
diff --git a/core/multiplayer/multiplayer_peer.h b/core/multiplayer/multiplayer_peer.h
index 474b18d2b6..91546832ce 100644
--- a/core/multiplayer/multiplayer_peer.h
+++ b/core/multiplayer/multiplayer_peer.h
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef NETWORKED_MULTIPLAYER_PEER_H
-#define NETWORKED_MULTIPLAYER_PEER_H
+#ifndef MULTIPLAYER_PEER_H
+#define MULTIPLAYER_PEER_H
 
 #include "core/io/packet_peer.h"
 #include "core/multiplayer/multiplayer.h"
@@ -147,4 +147,4 @@ public:
 	GDVIRTUAL0RC(int, _get_connection_status);
 };
 
-#endif // NETWORKED_MULTIPLAYER_PEER_H
+#endif // MULTIPLAYER_PEER_H
diff --git a/core/os/spin_lock.h b/core/os/spin_lock.h
index 6e8d7f46d5..80eeef3386 100644
--- a/core/os/spin_lock.h
+++ b/core/os/spin_lock.h
@@ -48,4 +48,5 @@ public:
 		locked.clear(std::memory_order_release);
 	}
 };
+
 #endif // SPIN_LOCK_H
diff --git a/core/os/thread.h b/core/os/thread.h
index 3382dd81f9..0fb283e224 100644
--- a/core/os/thread.h
+++ b/core/os/thread.h
@@ -123,4 +123,5 @@ public:
 };
 
 #endif // THREAD_H
+
 #endif // PLATFORM_THREAD_OVERRIDE
diff --git a/core/string/ustring.h b/core/string/ustring.h
index 1b8bf3d234..7672663964 100644
--- a/core/string/ustring.h
+++ b/core/string/ustring.h
@@ -28,9 +28,10 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
+// Note: _GODOT suffix added to avoid conflict with ICU header with the same guard.
+
 #ifndef USTRING_GODOT_H
 #define USTRING_GODOT_H
-// Note: Renamed to avoid conflict with ICU header with the same name.
 
 #include "core/string/char_utils.h"
 #include "core/templates/cowdata.h"
diff --git a/core/templates/bin_sorted_array.h b/core/templates/bin_sorted_array.h
index d928bd7a82..38beb9c04d 100644
--- a/core/templates/bin_sorted_array.h
+++ b/core/templates/bin_sorted_array.h
@@ -178,4 +178,4 @@ public:
 	}
 };
 
-#endif //BIN_SORTED_ARRAY_H
+#endif // BIN_SORTED_ARRAY_H
diff --git a/core/templates/lru.h b/core/templates/lru.h
index b08b6455b6..3a78de61db 100644
--- a/core/templates/lru.h
+++ b/core/templates/lru.h
@@ -124,4 +124,4 @@ public:
 	}
 };
 
-#endif
+#endif // LRU_H
diff --git a/core/templates/rb_map.h b/core/templates/rb_map.h
index c732ccd485..3393e6dd3e 100644
--- a/core/templates/rb_map.h
+++ b/core/templates/rb_map.h
@@ -758,4 +758,4 @@ public:
 	}
 };
 
-#endif // MAP_H
+#endif // RB_MAP_H
diff --git a/core/templates/rb_set.h b/core/templates/rb_set.h
index 226ea979c9..e87ea544fd 100644
--- a/core/templates/rb_set.h
+++ b/core/templates/rb_set.h
@@ -708,4 +708,4 @@ public:
 	}
 };
 
-#endif // SET_H
+#endif // RB_SET_H
diff --git a/core/templates/thread_work_pool.h b/core/templates/thread_work_pool.h
index b0cebf04f1..cdb43d6d89 100644
--- a/core/templates/thread_work_pool.h
+++ b/core/templates/thread_work_pool.h
@@ -154,4 +154,4 @@ public:
 	~ThreadWorkPool();
 };
 
-#endif // THREAD_POOL_H
+#endif // THREAD_WORK_POOL_H