Fix Rust code style

Makefile

@@ -82,6 +82,7 @@ target/debug/libpolytreewm.a:
 test: $(TEST_EXE)
 	@echo "$(TEST_EXE)" | awk '{ OFS="\n"; $$1=$$1 } 1' | /bin/sh
 	$(CARGO) test
+	$(CARGO) fmt --check
 
 clean:
 	rm -f $(ALL_OBJ) $(ALL_EXE)

rustfmt.toml

@@ -0,0 +1 @@
+max_width = 80

src/constraints.rs

@@ -14,124 +14,142 @@ const MIN_SNAP_DISTANCE: c_uint = 1;
 const MAX_SNAP_DISTANCE: c_uint = 10000;
 
 pub fn border_width(border_width: c_int) -> c_int {
-	if border_width < MIN_BORDER_WIDTH { return MIN_BORDER_WIDTH }
+    if border_width < MIN_BORDER_WIDTH {
-	if border_width > MAX_BORDER_WIDTH { return MAX_BORDER_WIDTH }
+        return MIN_BORDER_WIDTH;
-	border_width
+    }
+    if border_width > MAX_BORDER_WIDTH {
+        return MAX_BORDER_WIDTH;
+    }
+    border_width
 }
 
 pub fn default_clients_in_master(default_clients_in_master: c_int) -> c_int {
-	if default_clients_in_master < MIN_DEFAULT_CLIENTS_IN_MASTER {
+    if default_clients_in_master < MIN_DEFAULT_CLIENTS_IN_MASTER {
-		return MIN_DEFAULT_CLIENTS_IN_MASTER
+        return MIN_DEFAULT_CLIENTS_IN_MASTER;
-	}
+    }
-	if default_clients_in_master > MAX_DEFAULT_CLIENTS_IN_MASTER {
+    if default_clients_in_master > MAX_DEFAULT_CLIENTS_IN_MASTER {
-		return MAX_DEFAULT_CLIENTS_IN_MASTER
+        return MAX_DEFAULT_CLIENTS_IN_MASTER;
-	}
+    }
-	default_clients_in_master
+    default_clients_in_master
 }
 
-pub fn default_master_area_factor(default_master_area_factor: c_float) -> c_float {
+pub fn default_master_area_factor(
-	master_area_factor(default_master_area_factor)
+    default_master_area_factor: c_float,
+) -> c_float {
+    master_area_factor(default_master_area_factor)
 }
 
 pub fn gap_size(gap_size: c_int) -> c_int {
-	if gap_size < MIN_GAP_SIZE { return MIN_GAP_SIZE }
+    if gap_size < MIN_GAP_SIZE {
-	if gap_size > MAX_GAP_SIZE { return MAX_GAP_SIZE }
+        return MIN_GAP_SIZE;
-	gap_size
+    }
+    if gap_size > MAX_GAP_SIZE {
+        return MAX_GAP_SIZE;
+    }
+    gap_size
 }
 
 pub fn master_area_factor(master_area_factor: c_float) -> c_float {
-	if master_area_factor < MIN_MASTER_AREA_FACTOR { return MIN_MASTER_AREA_FACTOR }
+    if master_area_factor < MIN_MASTER_AREA_FACTOR {
-	if master_area_factor > MAX_MASTER_AREA_FACTOR { return MAX_MASTER_AREA_FACTOR }
+        return MIN_MASTER_AREA_FACTOR;
-	master_area_factor
+    }
+    if master_area_factor > MAX_MASTER_AREA_FACTOR {
+        return MAX_MASTER_AREA_FACTOR;
+    }
+    master_area_factor
 }
 
 pub fn max_clients_in_master(max_clients_in_master: c_int) -> c_int {
-	if max_clients_in_master < MIN_MAX_CLIENTS_IN_MASTER {
+    if max_clients_in_master < MIN_MAX_CLIENTS_IN_MASTER {
-		return MIN_MAX_CLIENTS_IN_MASTER
+        return MIN_MAX_CLIENTS_IN_MASTER;
-	}
+    }
-	if max_clients_in_master > MAX_MAX_CLIENTS_IN_MASTER {
+    if max_clients_in_master > MAX_MAX_CLIENTS_IN_MASTER {
-		return MAX_MAX_CLIENTS_IN_MASTER
+        return MAX_MAX_CLIENTS_IN_MASTER;
-	}
+    }
-	max_clients_in_master
+    max_clients_in_master
 }
 
 pub fn snap_distance(snap_distance: c_uint) -> c_uint {
-	if snap_distance < MIN_SNAP_DISTANCE { return MIN_SNAP_DISTANCE }
+    if snap_distance < MIN_SNAP_DISTANCE {
-	if snap_distance > MAX_SNAP_DISTANCE { return MAX_SNAP_DISTANCE }
+        return MIN_SNAP_DISTANCE;
-	snap_distance
+    }
+    if snap_distance > MAX_SNAP_DISTANCE {
+        return MAX_SNAP_DISTANCE;
+    }
+    snap_distance
 }
 
 #[cfg(test)]
 mod tests {
-	use super::*;
+    use super::*;
 
-	#[test]
+    #[test]
-	fn test_border_width() {
+    fn test_border_width() {
-		assert_eq!(border_width(-1), 0);
+        assert_eq!(border_width(-1), 0);
 
-		assert_eq!(border_width(0), 0);
+        assert_eq!(border_width(0), 0);
-		assert_eq!(border_width(10), 10);
+        assert_eq!(border_width(10), 10);
-		assert_eq!(border_width(10_000), 10_000);
+        assert_eq!(border_width(10_000), 10_000);
 
-		assert_eq!(border_width(10_001), 10_000);
+        assert_eq!(border_width(10_001), 10_000);
-		assert_eq!(border_width(20_000), 10_000);
+        assert_eq!(border_width(20_000), 10_000);
-	}
+    }
 
-	#[test]
+    #[test]
-	fn test_default_clients_in_master() {
+    fn test_default_clients_in_master() {
-		assert_eq!(default_clients_in_master(-1), 1);
+        assert_eq!(default_clients_in_master(-1), 1);
-		assert_eq!(default_clients_in_master(0), 1);
+        assert_eq!(default_clients_in_master(0), 1);
 
-		assert_eq!(default_clients_in_master(1), 1);
+        assert_eq!(default_clients_in_master(1), 1);
-		assert_eq!(default_clients_in_master(2), 2);
+        assert_eq!(default_clients_in_master(2), 2);
-		assert_eq!(default_clients_in_master(9999), 9999);
+        assert_eq!(default_clients_in_master(9999), 9999);
-		assert_eq!(default_clients_in_master(10_000), 10_000);
+        assert_eq!(default_clients_in_master(10_000), 10_000);
 
-		assert_eq!(default_clients_in_master(10_001), 10_000);
+        assert_eq!(default_clients_in_master(10_001), 10_000);
-		assert_eq!(default_clients_in_master(20_000), 10_000);
+        assert_eq!(default_clients_in_master(20_000), 10_000);
-	}
+    }
 
-	#[test]
+    #[test]
-	fn test_gap_size() {
+    fn test_gap_size() {
-		assert_eq!(gap_size(-2), 0);
+        assert_eq!(gap_size(-2), 0);
-		assert_eq!(gap_size(-1), 0);
+        assert_eq!(gap_size(-1), 0);
 
-		assert_eq!(gap_size(0), 0);
+        assert_eq!(gap_size(0), 0);
-		assert_eq!(gap_size(1), 1);
+        assert_eq!(gap_size(1), 1);
-		assert_eq!(gap_size(100), 100);
+        assert_eq!(gap_size(100), 100);
-		assert_eq!(gap_size(9999), 9999);
+        assert_eq!(gap_size(9999), 9999);
-		assert_eq!(gap_size(10_000), 10_000);
+        assert_eq!(gap_size(10_000), 10_000);
 
-		assert_eq!(gap_size(10_001), 10_000);
+        assert_eq!(gap_size(10_001), 10_000);
-		assert_eq!(gap_size(20_000), 10_000);
+        assert_eq!(gap_size(20_000), 10_000);
-	}
+    }
 
-	#[test]
+    #[test]
-	fn test_max_clients_in_master() {
+    fn test_max_clients_in_master() {
-		assert_eq!(max_clients_in_master(-1), 1);
+        assert_eq!(max_clients_in_master(-1), 1);
-		assert_eq!(max_clients_in_master(0), 1);
+        assert_eq!(max_clients_in_master(0), 1);
 
-		assert_eq!(max_clients_in_master(1), 1);
+        assert_eq!(max_clients_in_master(1), 1);
-		assert_eq!(max_clients_in_master(2), 2);
+        assert_eq!(max_clients_in_master(2), 2);
-		assert_eq!(max_clients_in_master(100), 100);
+        assert_eq!(max_clients_in_master(100), 100);
-		assert_eq!(max_clients_in_master(9999), 9999);
+        assert_eq!(max_clients_in_master(9999), 9999);
-		assert_eq!(max_clients_in_master(10_000), 10_000);
+        assert_eq!(max_clients_in_master(10_000), 10_000);
 
-		assert_eq!(max_clients_in_master(10_001), 10_000);
+        assert_eq!(max_clients_in_master(10_001), 10_000);
-		assert_eq!(max_clients_in_master(20_000), 10_000);
+        assert_eq!(max_clients_in_master(20_000), 10_000);
-	}
+    }
 
-	#[test]
+    #[test]
-	fn test_snap_distance() {
+    fn test_snap_distance() {
-		assert_eq!(snap_distance(0), 1);
+        assert_eq!(snap_distance(0), 1);
 
-		assert_eq!(snap_distance(1), 1);
+        assert_eq!(snap_distance(1), 1);
-		assert_eq!(snap_distance(2), 2);
+        assert_eq!(snap_distance(2), 2);
-		assert_eq!(snap_distance(100), 100);
+        assert_eq!(snap_distance(100), 100);
-		assert_eq!(snap_distance(9999), 9999);
+        assert_eq!(snap_distance(9999), 9999);
-		assert_eq!(snap_distance(10_000), 10_000);
+        assert_eq!(snap_distance(10_000), 10_000);
 
-		assert_eq!(snap_distance(10_001), 10_000);
+        assert_eq!(snap_distance(10_001), 10_000);
-		assert_eq!(snap_distance(20_000), 10_000);
+        assert_eq!(snap_distance(20_000), 10_000);
-	}
+    }
 }

src/lib.rs

@@ -4,35 +4,43 @@ use std::os::raw::*;
 
 #[no_mangle]
 extern "C" fn constraints_border_width(border_width: c_int) -> c_int {
-	constraints::border_width(border_width)
+    constraints::border_width(border_width)
 }
 
 #[no_mangle]
-extern "C" fn constraints_default_clients_in_master(default_clients_in_master: c_int) -> c_int {
+extern "C" fn constraints_default_clients_in_master(
-	constraints::default_clients_in_master(default_clients_in_master)
+    default_clients_in_master: c_int,
+) -> c_int {
+    constraints::default_clients_in_master(default_clients_in_master)
 }
 
 #[no_mangle]
-extern "C" fn constraints_default_master_area_factor(default_master_area_factor: c_float) -> c_float {
+extern "C" fn constraints_default_master_area_factor(
-	constraints::default_master_area_factor(default_master_area_factor)
+    default_master_area_factor: c_float,
+) -> c_float {
+    constraints::default_master_area_factor(default_master_area_factor)
 }
 
 #[no_mangle]
 extern "C" fn constraints_gap_size(gap_size: c_int) -> c_int {
-	constraints::gap_size(gap_size)
+    constraints::gap_size(gap_size)
 }
 
 #[no_mangle]
-extern "C" fn constraints_master_area_factor(master_area_factor: c_float) -> c_float {
+extern "C" fn constraints_master_area_factor(
-	constraints::master_area_factor(master_area_factor)
+    master_area_factor: c_float,
+) -> c_float {
+    constraints::master_area_factor(master_area_factor)
 }
 
 #[no_mangle]
-extern "C" fn constraints_max_clients_in_master(max_clients_in_master: c_int) -> c_int {
+extern "C" fn constraints_max_clients_in_master(
-	constraints::max_clients_in_master(max_clients_in_master)
+    max_clients_in_master: c_int,
+) -> c_int {
+    constraints::max_clients_in_master(max_clients_in_master)
 }
 
 #[no_mangle]
 extern "C" fn constraints_snap_distance(snap_distance: c_uint) -> c_uint {
-	constraints::snap_distance(snap_distance)
+    constraints::snap_distance(snap_distance)
 }