uv/crates/uv-preview/src/lib.rs

297 lines
10 KiB
Rust

use std::{
fmt::{Display, Formatter},
str::FromStr,
};
use thiserror::Error;
use uv_warnings::warn_user_once;
bitflags::bitflags! {
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub struct PreviewFeatures: u32 {
const PYTHON_INSTALL_DEFAULT = 1 << 0;
const PYTHON_UPGRADE = 1 << 1;
const JSON_OUTPUT = 1 << 2;
const PYLOCK = 1 << 3;
const ADD_BOUNDS = 1 << 4;
const PACKAGE_CONFLICTS = 1 << 5;
const EXTRA_BUILD_DEPENDENCIES = 1 << 6;
const DETECT_MODULE_CONFLICTS = 1 << 7;
const FORMAT = 1 << 8;
const NATIVE_AUTH = 1 << 9;
const S3_ENDPOINT = 1 << 10;
const CACHE_SIZE = 1 << 11;
const INIT_PROJECT_FLAG = 1 << 12;
const WORKSPACE_METADATA = 1 << 13;
const WORKSPACE_DIR = 1 << 14;
const WORKSPACE_LIST = 1 << 15;
const SBOM_EXPORT = 1 << 16;
const AUTH_HELPER = 1 << 17;
}
}
impl PreviewFeatures {
/// Returns the string representation of a single preview feature flag.
///
/// Panics if given a combination of flags.
fn flag_as_str(self) -> &'static str {
match self {
Self::PYTHON_INSTALL_DEFAULT => "python-install-default",
Self::PYTHON_UPGRADE => "python-upgrade",
Self::JSON_OUTPUT => "json-output",
Self::PYLOCK => "pylock",
Self::ADD_BOUNDS => "add-bounds",
Self::PACKAGE_CONFLICTS => "package-conflicts",
Self::EXTRA_BUILD_DEPENDENCIES => "extra-build-dependencies",
Self::DETECT_MODULE_CONFLICTS => "detect-module-conflicts",
Self::FORMAT => "format",
Self::NATIVE_AUTH => "native-auth",
Self::S3_ENDPOINT => "s3-endpoint",
Self::CACHE_SIZE => "cache-size",
Self::INIT_PROJECT_FLAG => "init-project-flag",
Self::WORKSPACE_METADATA => "workspace-metadata",
Self::WORKSPACE_DIR => "workspace-dir",
Self::WORKSPACE_LIST => "workspace-list",
Self::SBOM_EXPORT => "sbom-export",
Self::AUTH_HELPER => "auth-helper",
_ => panic!("`flag_as_str` can only be used for exactly one feature flag"),
}
}
}
impl Display for PreviewFeatures {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
if self.is_empty() {
write!(f, "none")
} else {
let features: Vec<&str> = self.iter().map(Self::flag_as_str).collect();
write!(f, "{}", features.join(","))
}
}
}
#[derive(Debug, Error, Clone)]
pub enum PreviewFeaturesParseError {
#[error("Empty string in preview features: {0}")]
Empty(String),
}
impl FromStr for PreviewFeatures {
type Err = PreviewFeaturesParseError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let mut flags = Self::empty();
for part in s.split(',') {
let part = part.trim();
if part.is_empty() {
return Err(PreviewFeaturesParseError::Empty(
"Empty string in preview features".to_string(),
));
}
let flag = match part {
"python-install-default" => Self::PYTHON_INSTALL_DEFAULT,
"python-upgrade" => Self::PYTHON_UPGRADE,
"json-output" => Self::JSON_OUTPUT,
"pylock" => Self::PYLOCK,
"add-bounds" => Self::ADD_BOUNDS,
"package-conflicts" => Self::PACKAGE_CONFLICTS,
"extra-build-dependencies" => Self::EXTRA_BUILD_DEPENDENCIES,
"detect-module-conflicts" => Self::DETECT_MODULE_CONFLICTS,
"format" => Self::FORMAT,
"native-auth" => Self::NATIVE_AUTH,
"s3-endpoint" => Self::S3_ENDPOINT,
"cache-size" => Self::CACHE_SIZE,
"init-project-flag" => Self::INIT_PROJECT_FLAG,
"workspace-metadata" => Self::WORKSPACE_METADATA,
"workspace-dir" => Self::WORKSPACE_DIR,
"workspace-list" => Self::WORKSPACE_LIST,
"sbom-export" => Self::SBOM_EXPORT,
"auth-helper" => Self::AUTH_HELPER,
_ => {
warn_user_once!("Unknown preview feature: `{part}`");
continue;
}
};
flags |= flag;
}
Ok(flags)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub struct Preview {
flags: PreviewFeatures,
}
impl Preview {
pub fn new(flags: PreviewFeatures) -> Self {
Self { flags }
}
pub fn all() -> Self {
Self::new(PreviewFeatures::all())
}
pub fn from_args(
preview: bool,
no_preview: bool,
preview_features: &[PreviewFeatures],
) -> Self {
if no_preview {
return Self::default();
}
if preview {
return Self::all();
}
let mut flags = PreviewFeatures::empty();
for features in preview_features {
flags |= *features;
}
Self { flags }
}
pub fn is_enabled(&self, flag: PreviewFeatures) -> bool {
self.flags.contains(flag)
}
}
impl Display for Preview {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
if self.flags.is_empty() {
write!(f, "disabled")
} else if self.flags == PreviewFeatures::all() {
write!(f, "enabled")
} else {
write!(f, "{}", self.flags)
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_preview_features_from_str() {
// Test single feature
let features = PreviewFeatures::from_str("python-install-default").unwrap();
assert_eq!(features, PreviewFeatures::PYTHON_INSTALL_DEFAULT);
// Test multiple features
let features = PreviewFeatures::from_str("python-upgrade,json-output").unwrap();
assert!(features.contains(PreviewFeatures::PYTHON_UPGRADE));
assert!(features.contains(PreviewFeatures::JSON_OUTPUT));
assert!(!features.contains(PreviewFeatures::PYLOCK));
// Test with whitespace
let features = PreviewFeatures::from_str("pylock , add-bounds").unwrap();
assert!(features.contains(PreviewFeatures::PYLOCK));
assert!(features.contains(PreviewFeatures::ADD_BOUNDS));
// Test empty string error
assert!(PreviewFeatures::from_str("").is_err());
assert!(PreviewFeatures::from_str("pylock,").is_err());
assert!(PreviewFeatures::from_str(",pylock").is_err());
// Test unknown feature (should be ignored with warning)
let features = PreviewFeatures::from_str("unknown-feature,pylock").unwrap();
assert!(features.contains(PreviewFeatures::PYLOCK));
assert_eq!(features.bits().count_ones(), 1);
}
#[test]
fn test_preview_features_display() {
// Test empty
let features = PreviewFeatures::empty();
assert_eq!(features.to_string(), "none");
// Test single feature
let features = PreviewFeatures::PYTHON_INSTALL_DEFAULT;
assert_eq!(features.to_string(), "python-install-default");
// Test multiple features
let features = PreviewFeatures::PYTHON_UPGRADE | PreviewFeatures::JSON_OUTPUT;
assert_eq!(features.to_string(), "python-upgrade,json-output");
}
#[test]
fn test_preview_display() {
// Test disabled
let preview = Preview::default();
assert_eq!(preview.to_string(), "disabled");
// Test enabled (all features)
let preview = Preview::all();
assert_eq!(preview.to_string(), "enabled");
// Test specific features
let preview = Preview::new(PreviewFeatures::PYTHON_UPGRADE | PreviewFeatures::PYLOCK);
assert_eq!(preview.to_string(), "python-upgrade,pylock");
}
#[test]
fn test_preview_from_args() {
// Test no_preview
let preview = Preview::from_args(true, true, &[]);
assert_eq!(preview.to_string(), "disabled");
// Test preview (all features)
let preview = Preview::from_args(true, false, &[]);
assert_eq!(preview.to_string(), "enabled");
// Test specific features
let features = vec![
PreviewFeatures::PYTHON_UPGRADE,
PreviewFeatures::JSON_OUTPUT,
];
let preview = Preview::from_args(false, false, &features);
assert!(preview.is_enabled(PreviewFeatures::PYTHON_UPGRADE));
assert!(preview.is_enabled(PreviewFeatures::JSON_OUTPUT));
assert!(!preview.is_enabled(PreviewFeatures::PYLOCK));
}
#[test]
fn test_as_str_single_flags() {
assert_eq!(
PreviewFeatures::PYTHON_INSTALL_DEFAULT.flag_as_str(),
"python-install-default"
);
assert_eq!(
PreviewFeatures::PYTHON_UPGRADE.flag_as_str(),
"python-upgrade"
);
assert_eq!(PreviewFeatures::JSON_OUTPUT.flag_as_str(), "json-output");
assert_eq!(PreviewFeatures::PYLOCK.flag_as_str(), "pylock");
assert_eq!(PreviewFeatures::ADD_BOUNDS.flag_as_str(), "add-bounds");
assert_eq!(
PreviewFeatures::PACKAGE_CONFLICTS.flag_as_str(),
"package-conflicts"
);
assert_eq!(
PreviewFeatures::EXTRA_BUILD_DEPENDENCIES.flag_as_str(),
"extra-build-dependencies"
);
assert_eq!(
PreviewFeatures::DETECT_MODULE_CONFLICTS.flag_as_str(),
"detect-module-conflicts"
);
assert_eq!(PreviewFeatures::FORMAT.flag_as_str(), "format");
assert_eq!(PreviewFeatures::S3_ENDPOINT.flag_as_str(), "s3-endpoint");
assert_eq!(PreviewFeatures::SBOM_EXPORT.flag_as_str(), "sbom-export");
}
#[test]
#[should_panic(expected = "`flag_as_str` can only be used for exactly one feature flag")]
fn test_as_str_multiple_flags_panics() {
let features = PreviewFeatures::PYTHON_UPGRADE | PreviewFeatures::JSON_OUTPUT;
let _ = features.flag_as_str();
}
}