add if and if-else

src/rule/composer.rs

@@ -1,5 +1,6 @@
 mod and;
 mod equiv;
+mod if_else;
 mod imply;
 mod nand;
 mod nor;
@@ -9,7 +10,8 @@ mod xor;
 
 pub use and::And;
 pub use equiv::Equiv;
-pub use imply::Imply;
+pub use if_else::IfElse;
+pub use imply::{If, Imply};
 pub use nand::Nand;
 pub use nor::Nor;
 pub use not::Not;

src/rule/composer/equiv.rs

@@ -2,14 +2,14 @@ use crate::rule::composer::imply::Imply;
 use crate::And;
 
 /// This is a type that represents logical equivalence in logic.
-/// 
+///
 /// # Example
 /// ```rust
 /// use refined_type::rule::composer::Equiv;
 /// use refined_type::rule::{EvenRuleI8, GreaterEqualRuleI8, Rule};
-/// 
+///
 /// type Target = Equiv<GreaterEqualRuleI8<10>, EvenRuleI8>;
-/// 
+///
 /// for value in vec![1, 10] {
 ///    assert!(Target::validate(value).is_ok());
 /// }

src/rule/composer/if_else.rs

@@ -0,0 +1,47 @@
+use crate::rule::composer::Not;
+use crate::{And, Or};
+
+/// This is a type that represents logical if-else in logic.
+/// # Example
+/// ```rust
+/// use refined_type::rule::composer::IfElse;
+///
+/// use refined_type::rule::{EvenRuleI8, GreaterEqualRuleI8, OddRuleI8, Rule};
+///
+/// type Target = IfElse<GreaterEqualRuleI8<10>, EvenRuleI8, OddRuleI8>;
+///
+/// for value in vec![1, 10] {
+///   assert!(Target::validate(value).is_ok());
+/// }
+///
+/// for value in vec![2, 11] {
+///  assert!(Target::validate(value).is_err());
+/// }
+/// ```
+pub type IfElse<CONDITION, THEN, ELSE> = Or![And![CONDITION, THEN], And![Not<CONDITION>, ELSE]];
+
+#[cfg(test)]
+mod test {
+    use crate::rule::composer::IfElse;
+    use crate::rule::{EvenRuleI8, GreaterEqualRuleI8, OddRuleI8, Rule};
+
+    type Target = IfElse<GreaterEqualRuleI8<10>, EvenRuleI8, OddRuleI8>;
+
+    #[test]
+    fn test_rule_binder_ok() {
+        let table = vec![1, 10];
+
+        for value in table {
+            assert!(Target::validate(value).is_ok());
+        }
+    }
+
+    #[test]
+    fn test_rule_binder_err() {
+        let table = vec![2, 11];
+
+        for value in table {
+            assert!(Target::validate(value).is_err());
+        }
+    }
+}

src/rule/composer/imply.rs

@@ -7,18 +7,36 @@ use crate::Or;
 /// ```rust
 /// use refined_type::rule::composer::Imply;
 /// use refined_type::rule::{EvenRuleI8, GreaterEqualRuleI8, Rule};
-/// 
+///
 /// type IfGreaterOrEqual10ThenEven = Imply<GreaterEqualRuleI8<10>, EvenRuleI8>;
-/// 
+///
 /// for value in vec![8, 9, 10, 12] {
 ///    assert!(IfGreaterOrEqual10ThenEven::validate(value).is_ok());
 /// }
-/// 
+///
 /// for value in vec![11, 13] {
 ///   assert!(IfGreaterOrEqual10ThenEven::validate(value).is_err());
 /// }
 pub type Imply<RULE1, RULE2> = Or![Not<RULE1>, RULE2];
 
+/// This is a type that represents logical if in logic.
+///
+/// # Example
+/// ```rust
+/// use refined_type::rule::composer::If;
+/// use refined_type::rule::{EvenRuleI8, GreaterEqualRuleI8, Rule};
+///
+/// type IfGreaterOrEqual10ThenEven = If<GreaterEqualRuleI8<10>, EvenRuleI8>;
+///
+/// for value in vec![8, 9, 10, 12] {
+///    assert!(IfGreaterOrEqual10ThenEven::validate(value).is_ok());
+/// }
+///
+/// for value in vec![11, 13] {
+///   assert!(IfGreaterOrEqual10ThenEven::validate(value).is_err());
+/// }
+pub type If<CONDITION, THEN> = Imply<CONDITION, THEN>;
+
 #[cfg(test)]
 mod test {
     use crate::rule::composer::Imply;

src/rule/composer/nand.rs

@@ -55,7 +55,7 @@ mod test_3 {
     type Target6 = Nand![InvalidI8, ValidI8, InvalidI8]; // PASS
     type Target7 = Nand![InvalidI8, InvalidI8, ValidI8]; // PASS
     type Target8 = Nand![InvalidI8, InvalidI8, InvalidI8]; // PASS
-    
+
     #[test]
     fn test_rule_binder_ok() {
         assert!(Target2::validate(0).is_ok());
@@ -66,7 +66,7 @@ mod test_3 {
         assert!(Target7::validate(0).is_ok());
         assert!(Target8::validate(0).is_ok());
     }
-    
+
     #[test]
     fn test_rule_binder_err() {
         assert!(Target1::validate(0).is_err());

src/rule/composer/nor.rs

@@ -1,5 +1,5 @@
-use crate::Or;
 use crate::rule::composer::Not;
+use crate::Or;
 
 /// This is a type that represents logical NOR in logic.
 pub type Nor<RULE1, RULE2> = Not<Or![RULE1, RULE2]>;

src/rule/composer/xor.rs

@@ -14,10 +14,10 @@ use crate::{And, Or};
 /// type Target2 = Xor![ValidI8, InvalidI8]; // 1: PASS
 /// type Target3 = Xor![InvalidI8, ValidI8]; // 1: PASS
 /// type Target4 = Xor![InvalidI8, InvalidI8]; // 0: ERR
-/// 
+///
 /// assert!(Target2::validate(0).is_ok());
 /// assert!(Target3::validate(0).is_ok());
-/// 
+///
 /// assert!(Target1::validate(0).is_err());
 /// assert!(Target4::validate(0).is_err());
 /// ```