add mactors for true/false

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/mod.rs

@@ -38,3 +38,59 @@ pub mod mods {
 		() => {};
 	}
 }
+
+/// Functor for falsy
+#[macro_export]
+macro_rules! is_false {
+	() => {
+		|x| !x
+	};
+}
+
+/// Functor for truthy
+#[macro_export]
+macro_rules! is_true {
+	() => {
+		|x| !!x
+	};
+}
+
+/// Functor for equality to zero
+#[macro_export]
+macro_rules! is_zero {
+	() => {
+		$crate::is_matching!(0)
+	};
+}
+
+/// Functor for equality i.e. .is_some_and(is_equal!(2))
+#[macro_export]
+macro_rules! is_equal_to {
+	($val:expr) => {
+		|x| x == $val
+	};
+}
+
+/// Functor for less i.e. .is_some_and(is_less_than!(2))
+#[macro_export]
+macro_rules! is_less_than {
+	($val:expr) => {
+		|x| x < $val
+	};
+}
+
+/// Functor for matches! i.e. .is_some_and(is_matching!('A'..='Z'))
+#[macro_export]
+macro_rules! is_matching {
+	($val:expr) => {
+		|x| matches!(x, $val)
+	};
+}
+
+/// Functor for !is_empty()
+#[macro_export]
+macro_rules! is_not_empty {
+	() => {
+		|x| !x.is_empty()
+	};
+}

src/core/utils/math.rs

@@ -53,38 +53,6 @@ macro_rules! validated {
 	($($input:tt)+) => { $crate::expected!($($input)+) }
 }
 
-/// Functor for equality to zero
-#[macro_export]
-macro_rules! is_zero {
-	() => {
-		$crate::is_matching!(0)
-	};
-}
-
-/// Functor for equality i.e. .is_some_and(is_equal!(2))
-#[macro_export]
-macro_rules! is_equal_to {
-	($val:expr) => {
-		|x| (x == $val)
-	};
-}
-
-/// Functor for less i.e. .is_some_and(is_less_than!(2))
-#[macro_export]
-macro_rules! is_less_than {
-	($val:expr) => {
-		|x| (x < $val)
-	};
-}
-
-/// Functor for matches! i.e. .is_some_and(is_matching!('A'..='Z'))
-#[macro_export]
-macro_rules! is_matching {
-	($val:expr) => {
-		|x| matches!(x, $val)
-	};
-}
-
 /// Returns false if the exponential backoff has expired based on the inputs
 #[inline]
 #[must_use]