Style: Enforce separation line between function definitions

I couldn't find a tool that enforces it, so I went the manual route:
```
find -name "thirdparty" -prune \
  -o -name "*.cpp" -o -name "*.h" -o -name "*.m" -o -name "*.mm" \
  -o -name "*.glsl" > files
perl -0777 -pi -e 's/\n}\n([^#])/\n}\n\n\1/g' $(cat files)
misc/scripts/fix_style.sh -c
```

This adds a newline after all `}` on the first column, unless they
are followed by `#` (typically `#endif`). This leads to having lots
of places with two lines between function/class definitions, but
clang-format then fixes it as we enforce max one line of separation.

This doesn't fix potential occurrences of function definitions which
are indented (e.g. for a helper class defined in a .cpp), but it's
better than nothing. Also can't be made to run easily on CI/hooks so
we'll have to be careful with new code.

Part of #33027.

1 files changed, 10 insertions, 0 deletions

diff --git a/core/callable.cpp b/core/callable.cpp
index dc2d034cc6..b7bdc715f8 100644
--- a/core/callable.cpp
+++ b/core/callable.cpp
@@ -72,6 +72,7 @@ ObjectID Callable::get_object_id() const {
 		return ObjectID(object);
 	}
 }
+
 StringName Callable::get_method() const {
 	ERR_FAIL_COND_V_MSG(is_custom(), StringName(),
 			vformat("Can't get method on CallableCustom \"%s\".", operator String()));
@@ -117,9 +118,11 @@ bool Callable::operator==(const Callable &p_callable) const {
 		return false;
 	}
 }
+
 bool Callable::operator!=(const Callable &p_callable) const {
 	return !(*this == p_callable);
 }
+
 bool Callable::operator<(const Callable &p_callable) const {
 	bool custom_a = is_custom();
 	bool custom_b = p_callable.is_custom();
@@ -222,6 +225,7 @@ Callable::Callable(ObjectID p_object, const StringName &p_method) {
 	object = p_object;
 	method = p_method;
 }
+
 Callable::Callable(CallableCustom *p_custom) {
 	if (p_custom->referenced) {
 		object = 0;
@@ -231,6 +235,7 @@ Callable::Callable(CallableCustom *p_custom) {
 	object = 0; //ensure object is all zero, since pointer may be 32 bits
 	custom = p_custom;
 }
+
 Callable::Callable(const Callable &p_callable) {
 	if (p_callable.is_custom()) {
 		if (!p_callable.custom->ref_count.ref()) {
@@ -262,9 +267,11 @@ CallableCustom::CallableCustom() {
 Object *Signal::get_object() const {
 	return ObjectDB::get_instance(object);
 }
+
 ObjectID Signal::get_object_id() const {
 	return object;
 }
+
 StringName Signal::get_name() const {
 	return name;
 }
@@ -307,17 +314,20 @@ Error Signal::emit(const Variant **p_arguments, int p_argcount) const {
 
 	return obj->emit_signal(name, p_arguments, p_argcount);
 }
+
 Error Signal::connect(const Callable &p_callable, const Vector<Variant> &p_binds, uint32_t p_flags) {
 	Object *object = get_object();
 	ERR_FAIL_COND_V(!object, ERR_UNCONFIGURED);
 
 	return object->connect(name, p_callable, p_binds, p_flags);
 }
+
 void Signal::disconnect(const Callable &p_callable) {
 	Object *object = get_object();
 	ERR_FAIL_COND(!object);
 	object->disconnect(name, p_callable);
 }
+
 bool Signal::is_connected(const Callable &p_callable) const {
 	Object *object = get_object();
 	ERR_FAIL_COND_V(!object, false);