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[red-knot] Move, rename and make public the
PyVersion type (#12782)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| use std::fmt; | ||
|
|
||
| /// Enumeration of all supported Python versions | ||
| /// | ||
| /// TODO: unify with the `PythonVersion` enum in the linter/formatter crates? | ||
| #[derive(Copy, Clone, Hash, PartialEq, Eq, PartialOrd, Ord, Default)] | ||
| pub enum TargetVersion { | ||
| Py37, | ||
| #[default] | ||
| Py38, | ||
| Py39, | ||
| Py310, | ||
| Py311, | ||
| Py312, | ||
| Py313, | ||
| } | ||
|
|
||
| impl TargetVersion { | ||
| pub fn major_version(self) -> u8 { | ||
| PythonVersion::from(self).major | ||
| } | ||
|
|
||
| pub fn minor_version(self) -> u8 { | ||
| PythonVersion::from(self).minor | ||
| } | ||
|
|
||
| const fn as_display_str(self) -> &'static str { | ||
| match self { | ||
| Self::Py37 => "py37", | ||
| Self::Py38 => "py38", | ||
| Self::Py39 => "py39", | ||
| Self::Py310 => "py310", | ||
| Self::Py311 => "py311", | ||
| Self::Py312 => "py312", | ||
| Self::Py313 => "py313", | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl fmt::Display for TargetVersion { | ||
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { | ||
| f.write_str(self.as_display_str()) | ||
| } | ||
| } | ||
|
|
||
| impl fmt::Debug for TargetVersion { | ||
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { | ||
| fmt::Display::fmt(self, f) | ||
| } | ||
| } | ||
|
|
||
| /// Generic representation for a Python version. | ||
| /// | ||
| /// Unlike [`TargetVersion`], this does not necessarily represent | ||
| /// a Python version that we actually support. | ||
| #[derive(Debug, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash)] | ||
| pub struct PythonVersion { | ||
| pub major: u8, | ||
| pub minor: u8, | ||
| } | ||
|
|
||
| impl TryFrom<(&str, &str)> for PythonVersion { | ||
| type Error = std::num::ParseIntError; | ||
|
|
||
| fn try_from(value: (&str, &str)) -> Result<Self, Self::Error> { | ||
| let (major, minor) = value; | ||
| Ok(Self { | ||
| major: major.parse()?, | ||
| minor: minor.parse()?, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| impl fmt::Display for PythonVersion { | ||
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { | ||
| let PythonVersion { major, minor } = self; | ||
| write!(f, "{major}.{minor}") | ||
| } | ||
| } | ||
|
|
||
| impl From<TargetVersion> for PythonVersion { | ||
| fn from(value: TargetVersion) -> Self { | ||
| match value { | ||
| TargetVersion::Py37 => PythonVersion { major: 3, minor: 7 }, | ||
| TargetVersion::Py38 => PythonVersion { major: 3, minor: 8 }, | ||
| TargetVersion::Py39 => PythonVersion { major: 3, minor: 9 }, | ||
| TargetVersion::Py310 => PythonVersion { | ||
| major: 3, | ||
| minor: 10, | ||
| }, | ||
| TargetVersion::Py311 => PythonVersion { | ||
| major: 3, | ||
| minor: 11, | ||
| }, | ||
| TargetVersion::Py312 => PythonVersion { | ||
| major: 3, | ||
| minor: 12, | ||
| }, | ||
| TargetVersion::Py313 => PythonVersion { | ||
| major: 3, | ||
| minor: 13, | ||
| }, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug, PartialEq, Eq, Clone, Copy)] | ||
| pub struct UnsupportedPythonVersion(PythonVersion); | ||
|
|
||
| impl fmt::Display for UnsupportedPythonVersion { | ||
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { | ||
| write!(f, "Python version {} is unsupported", self.0) | ||
| } | ||
| } | ||
|
|
||
| impl std::error::Error for UnsupportedPythonVersion {} | ||
|
|
||
| impl TryFrom<PythonVersion> for TargetVersion { | ||
| type Error = UnsupportedPythonVersion; | ||
|
|
||
| fn try_from(value: PythonVersion) -> Result<Self, Self::Error> { | ||
| let PythonVersion { major: 3, minor } = value else { | ||
| return Err(UnsupportedPythonVersion(value)); | ||
| }; | ||
| match minor { | ||
| 7 => Ok(TargetVersion::Py37), | ||
| 8 => Ok(TargetVersion::Py38), | ||
| 9 => Ok(TargetVersion::Py39), | ||
| 10 => Ok(TargetVersion::Py310), | ||
| 11 => Ok(TargetVersion::Py311), | ||
| 12 => Ok(TargetVersion::Py312), | ||
| 13 => Ok(TargetVersion::Py313), | ||
| _ => Err(UnsupportedPythonVersion(value)), | ||
| } | ||
| } | ||
| } |
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