Added optional primitive types.

Author: RustEnthusiast

include/nstd/core/optional.h

@@ -1,5 +1,6 @@
 #ifndef NSTD_CORE_OPTIONAL_H
 #define NSTD_CORE_OPTIONAL_H
+#include "../nstd.h"
 
 /// Describes an `NSTDOptional` variant.
 typedef enum {
@@ -15,4 +16,41 @@ typedef enum {
     union { T some; };\
 }
 
+/// Represents an optional value of type `NSTDBool`.
+NSTDOptional(NSTDBool) NSTDOptionalBool;
+/// Represents an optional value of type `NSTDChar`.
+NSTDOptional(NSTDChar) NSTDOptionalChar;
+/// Represents an optional value of type `NSTDChar8`.
+NSTDOptional(NSTDChar8) NSTDOptionalChar8;
+/// Represents an optional value of type `NSTDChar16`.
+NSTDOptional(NSTDChar16) NSTDOptionalChar16;
+/// Represents an optional value of type `NSTDChar32`.
+NSTDOptional(NSTDChar32) NSTDOptionalChar32;
+/// Represents an optional value of type `NSTDUnichar`.
+NSTDOptional(NSTDUnichar) NSTDOptionalUnichar;
+/// Represents an optional value of type `NSTDFloat32`.
+NSTDOptional(NSTDFloat32) NSTDOptionalFloat32;
+/// Represents an optional value of type `NSTDFloat64`.
+NSTDOptional(NSTDFloat64) NSTDOptionalFloat64;
+/// Represents an optional value of type `NSTDInt`.
+NSTDOptional(NSTDInt) NSTDOptionalInt;
+/// Represents an optional value of type `NSTDUInt`.
+NSTDOptional(NSTDUInt) NSTDOptionalUInt;
+/// Represents an optional value of type `NSTDInt8`.
+NSTDOptional(NSTDInt8) NSTDOptionalInt8;
+/// Represents an optional value of type `NSTDUInt8`.
+NSTDOptional(NSTDUInt8) NSTDOptionalUInt8;
+/// Represents an optional value of type `NSTDInt16`.
+NSTDOptional(NSTDInt16) NSTDOptionalInt16;
+/// Represents an optional value of type `NSTDUInt16`.
+NSTDOptional(NSTDUInt16) NSTDOptionalUInt16;
+/// Represents an optional value of type `NSTDInt32`.
+NSTDOptional(NSTDInt32) NSTDOptionalInt32;
+/// Represents an optional value of type `NSTDUInt32`.
+NSTDOptional(NSTDUInt32) NSTDOptionalUInt32;
+/// Represents an optional value of type `NSTDInt64`.
+NSTDOptional(NSTDInt64) NSTDOptionalInt64;
+/// Represents an optional value of type `NSTDUInt64`.
+NSTDOptional(NSTDUInt64) NSTDOptionalUInt64;
+
 #endif

src/core/optional.rs

@@ -1,4 +1,9 @@
 //! Represents an optional (possibly uninitialized) value.
+use crate::{
+    NSTDBool, NSTDChar, NSTDChar16, NSTDChar32, NSTDChar8, NSTDFloat32, NSTDFloat64, NSTDInt,
+    NSTDInt16, NSTDInt32, NSTDInt64, NSTDInt8, NSTDUInt, NSTDUInt16, NSTDUInt32, NSTDUInt64,
+    NSTDUInt8, NSTDUnichar,
+};
 
 /// Describes an `NSTDOptional` variant.
 #[repr(C)]
@@ -18,3 +23,29 @@ pub enum NSTDOptional<T> {
     /// The initialized variant.
     Some(T),
 }
+
+/// Generates optional primitive structures.
+macro_rules! gen_optional {
+    ($name: ident, $T: ty) => {
+        #[doc = concat!("Represents an optional value of type `", stringify!($T), "`.")]
+        pub type $name = NSTDOptional<$T>;
+    };
+}
+gen_optional!(NSTDOptionalBool, NSTDBool);
+gen_optional!(NSTDOptionalChar, NSTDChar);
+gen_optional!(NSTDOptionalChar8, NSTDChar8);
+gen_optional!(NSTDOptionalChar16, NSTDChar16);
+gen_optional!(NSTDOptionalChar32, NSTDChar32);
+gen_optional!(NSTDOptionalUnichar, NSTDUnichar);
+gen_optional!(NSTDOptionalFloat32, NSTDFloat32);
+gen_optional!(NSTDOptionalFloat64, NSTDFloat64);
+gen_optional!(NSTDOptionalInt, NSTDInt);
+gen_optional!(NSTDOptionalUInt, NSTDUInt);
+gen_optional!(NSTDOptionalInt8, NSTDInt8);
+gen_optional!(NSTDOptionalUInt8, NSTDUInt8);
+gen_optional!(NSTDOptionalInt16, NSTDInt16);
+gen_optional!(NSTDOptionalUInt16, NSTDUInt16);
+gen_optional!(NSTDOptionalInt32, NSTDInt32);
+gen_optional!(NSTDOptionalUInt32, NSTDUInt32);
+gen_optional!(NSTDOptionalInt64, NSTDInt64);
+gen_optional!(NSTDOptionalUInt64, NSTDUInt64);