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-rw-r--r--src/arm32/flag/mod.rs50
1 files changed, 50 insertions, 0 deletions
diff --git a/src/arm32/flag/mod.rs b/src/arm32/flag/mod.rs
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+// Copyright 2024 Gabriel Bjørnager Jensen.
+//
+// This file is part of Pollex.
+//
+// Pollex is free software: you can redistribute it
+// and/or modify it under the terms of the GNU Af-
+// fero General Public License as published by the
+// Free Software Foundation, either version 3 of
+// the License, or (at your option) any later ver-
+// sion.
+//
+// Pollex is distributed in the hope that it will
+// be useful, but WITHOUT ANY WARRANTY; without
+// even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Af-
+// fero General Public License along with Pollex.
+// If not, see <https://www.gnu.org/licenses/>.
+
+use core::fmt::Display;
+
+/// A flag.
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[repr(u8)]
+pub enum Flag<const C: char> {
+ Off = 0x0,
+ On = 0x1,
+}
+
+impl<const C: char> Flag<C> {
+ #[inline(always)]
+ #[must_use]
+ pub const fn is_off(self) -> bool { self as u8 == Self::Off as u8 }
+
+ #[inline(always)]
+ #[must_use]
+ pub const fn is_on(self) -> bool { self as u8 == Self::On as u8 }
+}
+
+impl<const C: char> Display for Flag<C> {
+ fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
+ if self.is_on() {
+ write!(f, "{C}")?;
+ }
+
+ Ok(())
+ }
+}