Rename Red Knot (#17820)

crates/ty/src/python_version.rs

@@ -0,0 +1,68 @@
+/// Enumeration of all supported Python versions
+///
+/// TODO: unify with the `PythonVersion` enum in the linter/formatter crates?
+#[derive(Copy, Clone, Hash, Debug, PartialEq, Eq, PartialOrd, Ord, Default, clap::ValueEnum)]
+pub enum PythonVersion {
+    #[value(name = "3.7")]
+    Py37,
+    #[value(name = "3.8")]
+    Py38,
+    #[default]
+    #[value(name = "3.9")]
+    Py39,
+    #[value(name = "3.10")]
+    Py310,
+    #[value(name = "3.11")]
+    Py311,
+    #[value(name = "3.12")]
+    Py312,
+    #[value(name = "3.13")]
+    Py313,
+}
+
+impl PythonVersion {
+    const fn as_str(self) -> &'static str {
+        match self {
+            Self::Py37 => "3.7",
+            Self::Py38 => "3.8",
+            Self::Py39 => "3.9",
+            Self::Py310 => "3.10",
+            Self::Py311 => "3.11",
+            Self::Py312 => "3.12",
+            Self::Py313 => "3.13",
+        }
+    }
+}
+
+impl std::fmt::Display for PythonVersion {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(self.as_str())
+    }
+}
+
+impl From<PythonVersion> for ruff_python_ast::PythonVersion {
+    fn from(value: PythonVersion) -> Self {
+        match value {
+            PythonVersion::Py37 => Self::PY37,
+            PythonVersion::Py38 => Self::PY38,
+            PythonVersion::Py39 => Self::PY39,
+            PythonVersion::Py310 => Self::PY310,
+            PythonVersion::Py311 => Self::PY311,
+            PythonVersion::Py312 => Self::PY312,
+            PythonVersion::Py313 => Self::PY313,
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::python_version::PythonVersion;
+
+    #[test]
+    fn same_default_as_python_version() {
+        assert_eq!(
+            ruff_python_ast::PythonVersion::from(PythonVersion::default()),
+            ruff_python_ast::PythonVersion::default()
+        );
+    }
+}