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, 5 insertions, 0 deletions

diff --git a/core/math/aabb.cpp b/core/math/aabb.cpp
index 588ee84f58..d9cb928944 100644
--- a/core/math/aabb.cpp
+++ b/core/math/aabb.cpp
@@ -39,6 +39,7 @@ real_t AABB::get_area() const {
 bool AABB::operator==(const AABB &p_rval) const {
 	return ((position == p_rval.position) && (size == p_rval.size));
 }
+
 bool AABB::operator!=(const AABB &p_rval) const {
 	return ((position != p_rval.position) || (size != p_rval.size));
 }
@@ -238,6 +239,7 @@ Vector3 AABB::get_longest_axis() const {
 
 	return axis;
 }
+
 int AABB::get_longest_axis_index() const {
 	int axis = 0;
 	real_t max_size = size.x;
@@ -269,6 +271,7 @@ Vector3 AABB::get_shortest_axis() const {
 
 	return axis;
 }
+
 int AABB::get_shortest_axis_index() const {
 	int axis = 0;
 	real_t max_size = size.x;
@@ -290,11 +293,13 @@ AABB AABB::merge(const AABB &p_with) const {
 	aabb.merge_with(p_with);
 	return aabb;
 }
+
 AABB AABB::expand(const Vector3 &p_vector) const {
 	AABB aabb = *this;
 	aabb.expand_to(p_vector);
 	return aabb;
 }
+
 AABB AABB::grow(real_t p_by) const {
 	AABB aabb = *this;
 	aabb.grow_by(p_by);