1 files changed, 62 insertions, 0 deletions
diff --git a/crates/shirabe-semver/src/interval.rs b/crates/shirabe-semver/src/interval.rs
index 8c729dc..aa1bea8 100644
--- a/crates/shirabe-semver/src/interval.rs
+++ b/crates/shirabe-semver/src/interval.rs
@@ -1 +1,63 @@
 //! ref: composer/vendor/composer/semver/src/Interval.php
+
+use std::sync::OnceLock;
+
+use crate::constraint::constraint::Constraint;
+
+#[derive(Debug)]
+pub struct DevConstraintSet {
+    pub names: Vec<String>,
+    pub exclude: bool,
+}
+
+#[derive(Debug)]
+pub struct Interval {
+    start: Constraint,
+    end: Constraint,
+}
+
+impl Interval {
+    pub fn new(start: Constraint, end: Constraint) -> Self {
+        Self { start, end }
+    }
+
+    pub fn get_start(&self) -> &Constraint {
+        &self.start
+    }
+
+    pub fn get_end(&self) -> &Constraint {
+        &self.end
+    }
+
+    pub fn from_zero() -> &'static Constraint {
+        static ZERO: OnceLock<Constraint> = OnceLock::new();
+        ZERO.get_or_init(|| Constraint::new(">=".to_string(), "0.0.0.0-dev".to_string()))
+    }
+
+    pub fn until_positive_infinity() -> &'static Constraint {
+        static POSITIVE_INFINITY: OnceLock<Constraint> = OnceLock::new();
+        POSITIVE_INFINITY
+            .get_or_init(|| Constraint::new("<".to_string(), format!("{}.0.0.0", i64::MAX)))
+    }
+
+    pub fn any() -> Self {
+        Self::new(
+            Self::from_zero().clone(),
+            Self::until_positive_infinity().clone(),
+        )
+    }
+
+    pub fn any_dev() -> DevConstraintSet {
+        DevConstraintSet {
+            names: vec![],
+            exclude: true,
+        }
+    }
+
+    pub fn no_dev() -> DevConstraintSet {
+        DevConstraintSet {
+            names: vec![],
+            exclude: false,
+        }
+    }
+}