ruff/crates/red_knot_project/src/metadata.rs

946 lines
29 KiB
Rust

use configuration_file::{ConfigurationFile, ConfigurationFileError};
use red_knot_python_semantic::ProgramSettings;
use ruff_db::system::{System, SystemPath, SystemPathBuf};
use ruff_python_ast::name::Name;
use std::sync::Arc;
use thiserror::Error;
use crate::combine::Combine;
use crate::metadata::pyproject::{Project, PyProject, PyProjectError, ResolveRequiresPythonError};
use crate::metadata::value::ValueSource;
use options::KnotTomlError;
use options::Options;
mod configuration_file;
pub mod options;
pub mod pyproject;
pub mod settings;
pub mod value;
#[derive(Debug, PartialEq, Eq)]
#[cfg_attr(test, derive(serde::Serialize))]
pub struct ProjectMetadata {
pub(super) name: Name,
pub(super) root: SystemPathBuf,
/// The raw options
pub(super) options: Options,
/// Paths of configurations other than the project's configuration that were combined into [`Self::options`].
///
/// This field stores the paths of the configuration files, mainly for
/// knowing which files to watch for changes.
///
/// The path ordering doesn't imply precedence.
#[cfg_attr(test, serde(skip_serializing_if = "Vec::is_empty"))]
pub(super) extra_configuration_paths: Vec<SystemPathBuf>,
}
impl ProjectMetadata {
/// Creates a project with the given name and root that uses the default options.
pub fn new(name: Name, root: SystemPathBuf) -> Self {
Self {
name,
root,
extra_configuration_paths: Vec::default(),
options: Options::default(),
}
}
/// Loads a project from a `pyproject.toml` file.
pub(crate) fn from_pyproject(
pyproject: PyProject,
root: SystemPathBuf,
) -> Result<Self, ResolveRequiresPythonError> {
Self::from_options(
pyproject
.tool
.and_then(|tool| tool.knot)
.unwrap_or_default(),
root,
pyproject.project.as_ref(),
)
}
/// Loads a project from a set of options with an optional pyproject-project table.
pub fn from_options(
mut options: Options,
root: SystemPathBuf,
project: Option<&Project>,
) -> Result<Self, ResolveRequiresPythonError> {
let name = project
.and_then(|project| project.name.as_deref())
.map(|name| Name::new(&**name))
.unwrap_or_else(|| Name::new(root.file_name().unwrap_or("root")));
// If the `options` don't specify a python version but the `project.requires-python` field is set,
// use that as a lower bound instead.
if let Some(project) = project {
if options
.environment
.as_ref()
.is_none_or(|env| env.python_version.is_none())
{
if let Some(requires_python) = project.resolve_requires_python_lower_bound()? {
let mut environment = options.environment.unwrap_or_default();
environment.python_version = Some(requires_python);
options.environment = Some(environment);
}
}
}
Ok(Self {
name,
root,
options,
extra_configuration_paths: Vec::new(),
})
}
/// Discovers the closest project at `path` and returns its metadata.
///
/// The algorithm traverses upwards in the `path`'s ancestor chain and uses the following precedence
/// the resolve the project's root.
///
/// 1. The closest `pyproject.toml` with a `tool.knot` section or `knot.toml`.
/// 1. The closest `pyproject.toml`.
/// 1. Fallback to use `path` as the root and use the default settings.
pub fn discover(
path: &SystemPath,
system: &dyn System,
) -> Result<ProjectMetadata, ProjectDiscoveryError> {
tracing::debug!("Searching for a project in '{path}'");
if !system.is_directory(path) {
return Err(ProjectDiscoveryError::NotADirectory(path.to_path_buf()));
}
let mut closest_project: Option<ProjectMetadata> = None;
for project_root in path.ancestors() {
let pyproject_path = project_root.join("pyproject.toml");
let pyproject = if let Ok(pyproject_str) = system.read_to_string(&pyproject_path) {
match PyProject::from_toml_str(
&pyproject_str,
ValueSource::File(Arc::new(pyproject_path.clone())),
) {
Ok(pyproject) => Some(pyproject),
Err(error) => {
return Err(ProjectDiscoveryError::InvalidPyProject {
path: pyproject_path,
source: Box::new(error),
})
}
}
} else {
None
};
// A `knot.toml` takes precedence over a `pyproject.toml`.
let knot_toml_path = project_root.join("knot.toml");
if let Ok(knot_str) = system.read_to_string(&knot_toml_path) {
let options = match Options::from_toml_str(
&knot_str,
ValueSource::File(Arc::new(knot_toml_path.clone())),
) {
Ok(options) => options,
Err(error) => {
return Err(ProjectDiscoveryError::InvalidKnotToml {
path: knot_toml_path,
source: Box::new(error),
})
}
};
if pyproject
.as_ref()
.is_some_and(|project| project.knot().is_some())
{
// TODO: Consider using a diagnostic here
tracing::warn!("Ignoring the `tool.knot` section in `{pyproject_path}` because `{knot_toml_path}` takes precedence.");
}
tracing::debug!("Found project at '{}'", project_root);
let metadata = ProjectMetadata::from_options(
options,
project_root.to_path_buf(),
pyproject
.as_ref()
.and_then(|pyproject| pyproject.project.as_ref()),
)
.map_err(|err| {
ProjectDiscoveryError::InvalidRequiresPythonConstraint {
source: err,
path: pyproject_path,
}
})?;
return Ok(metadata);
}
if let Some(pyproject) = pyproject {
let has_knot_section = pyproject.knot().is_some();
let metadata =
ProjectMetadata::from_pyproject(pyproject, project_root.to_path_buf())
.map_err(
|err| ProjectDiscoveryError::InvalidRequiresPythonConstraint {
source: err,
path: pyproject_path,
},
)?;
if has_knot_section {
tracing::debug!("Found project at '{}'", project_root);
return Ok(metadata);
}
// Not a project itself, keep looking for an enclosing project.
if closest_project.is_none() {
closest_project = Some(metadata);
}
}
}
// No project found, but maybe a pyproject.toml was found.
let metadata = if let Some(closest_project) = closest_project {
tracing::debug!(
"Project without `tool.knot` section: '{}'",
closest_project.root()
);
closest_project
} else {
tracing::debug!("The ancestor directories contain no `pyproject.toml`. Falling back to a virtual project.");
// Create a project with a default configuration
Self::new(
path.file_name().unwrap_or("root").into(),
path.to_path_buf(),
)
};
Ok(metadata)
}
pub fn root(&self) -> &SystemPath {
&self.root
}
pub fn name(&self) -> &str {
&self.name
}
pub fn options(&self) -> &Options {
&self.options
}
pub fn extra_configuration_paths(&self) -> &[SystemPathBuf] {
&self.extra_configuration_paths
}
pub fn to_program_settings(&self, system: &dyn System) -> ProgramSettings {
self.options.to_program_settings(self.root(), system)
}
/// Combine the project options with the CLI options where the CLI options take precedence.
pub fn apply_cli_options(&mut self, options: Options) {
self.options = options.combine(std::mem::take(&mut self.options));
}
/// Applies the options from the configuration files to the project's options.
///
/// This includes:
///
/// * The user-level configuration
pub fn apply_configuration_files(
&mut self,
system: &dyn System,
) -> Result<(), ConfigurationFileError> {
if let Some(user) = ConfigurationFile::user(system)? {
tracing::debug!(
"Applying user-level configuration loaded from `{path}`.",
path = user.path()
);
self.apply_configuration_file(user);
}
Ok(())
}
/// Applies a lower-precedence configuration files to the project's options.
fn apply_configuration_file(&mut self, options: ConfigurationFile) {
self.extra_configuration_paths
.push(options.path().to_owned());
self.options.combine_with(options.into_options());
}
}
#[derive(Debug, Error)]
pub enum ProjectDiscoveryError {
#[error("project path '{0}' is not a directory")]
NotADirectory(SystemPathBuf),
#[error("{path} is not a valid `pyproject.toml`: {source}")]
InvalidPyProject {
source: Box<PyProjectError>,
path: SystemPathBuf,
},
#[error("{path} is not a valid `knot.toml`: {source}")]
InvalidKnotToml {
source: Box<KnotTomlError>,
path: SystemPathBuf,
},
#[error("Invalid `requires-python` version specifier (`{path}`): {source}")]
InvalidRequiresPythonConstraint {
source: ResolveRequiresPythonError,
path: SystemPathBuf,
},
}
#[cfg(test)]
mod tests {
//! Integration tests for project discovery
use anyhow::{anyhow, Context};
use insta::assert_ron_snapshot;
use ruff_db::system::{SystemPathBuf, TestSystem};
use ruff_python_ast::PythonVersion;
use crate::{ProjectDiscoveryError, ProjectMetadata};
#[test]
fn project_without_pyproject() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_files_all([(root.join("foo.py"), ""), (root.join("bar.py"), "")])
.context("Failed to write files")?;
let project =
ProjectMetadata::discover(&root, &system).context("Failed to discover project")?;
assert_eq!(project.root(), &*root);
with_escaped_paths(|| {
assert_ron_snapshot!(&project, @r#"
ProjectMetadata(
name: Name("app"),
root: "/app",
options: Options(),
)
"#);
});
Ok(())
}
#[test]
fn project_with_pyproject() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_files_all([
(
root.join("pyproject.toml"),
r#"
[project]
name = "backend"
"#,
),
(root.join("db/__init__.py"), ""),
])
.context("Failed to write files")?;
let project =
ProjectMetadata::discover(&root, &system).context("Failed to discover project")?;
assert_eq!(project.root(), &*root);
with_escaped_paths(|| {
assert_ron_snapshot!(&project, @r#"
ProjectMetadata(
name: Name("backend"),
root: "/app",
options: Options(),
)
"#);
});
// Discovering the same package from a subdirectory should give the same result
let from_src = ProjectMetadata::discover(&root.join("db"), &system)
.context("Failed to discover project from src sub-directory")?;
assert_eq!(from_src, project);
Ok(())
}
#[test]
fn project_with_invalid_pyproject() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_files_all([
(
root.join("pyproject.toml"),
r#"
[project]
name = "backend"
[tool.knot
"#,
),
(root.join("db/__init__.py"), ""),
])
.context("Failed to write files")?;
let Err(error) = ProjectMetadata::discover(&root, &system) else {
return Err(anyhow!("Expected project discovery to fail because of invalid syntax in the pyproject.toml"));
};
assert_error_eq(
&error,
r#"/app/pyproject.toml is not a valid `pyproject.toml`: TOML parse error at line 5, column 31
|
5 | [tool.knot
| ^
invalid table header
expected `.`, `]`
"#,
);
Ok(())
}
#[test]
fn nested_projects_in_sub_project() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_files_all([
(
root.join("pyproject.toml"),
r#"
[project]
name = "project-root"
[tool.knot.src]
root = "src"
"#,
),
(
root.join("packages/a/pyproject.toml"),
r#"
[project]
name = "nested-project"
[tool.knot.src]
root = "src"
"#,
),
])
.context("Failed to write files")?;
let sub_project = ProjectMetadata::discover(&root.join("packages/a"), &system)?;
with_escaped_paths(|| {
assert_ron_snapshot!(sub_project, @r#"
ProjectMetadata(
name: Name("nested-project"),
root: "/app/packages/a",
options: Options(
src: Some(SrcOptions(
root: Some("src"),
)),
),
)
"#);
});
Ok(())
}
#[test]
fn nested_projects_in_root_project() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_files_all([
(
root.join("pyproject.toml"),
r#"
[project]
name = "project-root"
[tool.knot.src]
root = "src"
"#,
),
(
root.join("packages/a/pyproject.toml"),
r#"
[project]
name = "nested-project"
[tool.knot.src]
root = "src"
"#,
),
])
.context("Failed to write files")?;
let root = ProjectMetadata::discover(&root, &system)?;
with_escaped_paths(|| {
assert_ron_snapshot!(root, @r#"
ProjectMetadata(
name: Name("project-root"),
root: "/app",
options: Options(
src: Some(SrcOptions(
root: Some("src"),
)),
),
)
"#);
});
Ok(())
}
#[test]
fn nested_projects_without_knot_sections() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_files_all([
(
root.join("pyproject.toml"),
r#"
[project]
name = "project-root"
"#,
),
(
root.join("packages/a/pyproject.toml"),
r#"
[project]
name = "nested-project"
"#,
),
])
.context("Failed to write files")?;
let sub_project = ProjectMetadata::discover(&root.join("packages/a"), &system)?;
with_escaped_paths(|| {
assert_ron_snapshot!(sub_project, @r#"
ProjectMetadata(
name: Name("nested-project"),
root: "/app/packages/a",
options: Options(),
)
"#);
});
Ok(())
}
#[test]
fn nested_projects_with_outer_knot_section() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_files_all([
(
root.join("pyproject.toml"),
r#"
[project]
name = "project-root"
[tool.knot.environment]
python-version = "3.10"
"#,
),
(
root.join("packages/a/pyproject.toml"),
r#"
[project]
name = "nested-project"
"#,
),
])
.context("Failed to write files")?;
let root = ProjectMetadata::discover(&root.join("packages/a"), &system)?;
with_escaped_paths(|| {
assert_ron_snapshot!(root, @r#"
ProjectMetadata(
name: Name("project-root"),
root: "/app",
options: Options(
environment: Some(EnvironmentOptions(
r#python-version: Some("3.10"),
)),
),
)
"#);
});
Ok(())
}
/// A `knot.toml` takes precedence over any `pyproject.toml`.
///
/// However, the `pyproject.toml` is still loaded to get the project name and, in the future,
/// the requires-python constraint.
#[test]
fn project_with_knot_and_pyproject_toml() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_files_all([
(
root.join("pyproject.toml"),
r#"
[project]
name = "super-app"
requires-python = ">=3.12"
[tool.knot.src]
root = "this_option_is_ignored"
"#,
),
(
root.join("knot.toml"),
r#"
[src]
root = "src"
"#,
),
])
.context("Failed to write files")?;
let root = ProjectMetadata::discover(&root, &system)?;
with_escaped_paths(|| {
assert_ron_snapshot!(root, @r#"
ProjectMetadata(
name: Name("super-app"),
root: "/app",
options: Options(
environment: Some(EnvironmentOptions(
r#python-version: Some("3.12"),
)),
src: Some(SrcOptions(
root: Some("src"),
)),
),
)
"#);
});
Ok(())
}
#[test]
fn requires_python_major_minor() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
requires-python = ">=3.12"
"#,
)
.context("Failed to write file")?;
let root = ProjectMetadata::discover(&root, &system)?;
assert_eq!(
root.options
.environment
.unwrap_or_default()
.python_version
.as_deref(),
Some(&PythonVersion::PY312)
);
Ok(())
}
#[test]
fn requires_python_major_only() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
requires-python = ">=3"
"#,
)
.context("Failed to write file")?;
let root = ProjectMetadata::discover(&root, &system)?;
assert_eq!(
root.options
.environment
.unwrap_or_default()
.python_version
.as_deref(),
Some(&PythonVersion::from((3, 0)))
);
Ok(())
}
/// A `requires-python` constraint with major, minor and patch can be simplified
/// to major and minor (e.g. 3.12.1 -> 3.12).
#[test]
fn requires_python_major_minor_patch() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
requires-python = ">=3.12.8"
"#,
)
.context("Failed to write file")?;
let root = ProjectMetadata::discover(&root, &system)?;
assert_eq!(
root.options
.environment
.unwrap_or_default()
.python_version
.as_deref(),
Some(&PythonVersion::PY312)
);
Ok(())
}
#[test]
fn requires_python_beta_version() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
requires-python = ">= 3.13.0b0"
"#,
)
.context("Failed to write file")?;
let root = ProjectMetadata::discover(&root, &system)?;
assert_eq!(
root.options
.environment
.unwrap_or_default()
.python_version
.as_deref(),
Some(&PythonVersion::PY313)
);
Ok(())
}
#[test]
fn requires_python_greater_than_major_minor() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
# This is somewhat nonsensical because 3.12.1 > 3.12 is true.
# That's why simplifying the constraint to >= 3.12 is correct
requires-python = ">3.12"
"#,
)
.context("Failed to write file")?;
let root = ProjectMetadata::discover(&root, &system)?;
assert_eq!(
root.options
.environment
.unwrap_or_default()
.python_version
.as_deref(),
Some(&PythonVersion::PY312)
);
Ok(())
}
/// `python-version` takes precedence if both `requires-python` and `python-version` are configured.
#[test]
fn requires_python_and_python_version() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
requires-python = ">=3.12"
[tool.knot.environment]
python-version = "3.10"
"#,
)
.context("Failed to write file")?;
let root = ProjectMetadata::discover(&root, &system)?;
assert_eq!(
root.options
.environment
.unwrap_or_default()
.python_version
.as_deref(),
Some(&PythonVersion::PY310)
);
Ok(())
}
#[test]
fn requires_python_less_than() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
requires-python = "<3.12"
"#,
)
.context("Failed to write file")?;
let Err(error) = ProjectMetadata::discover(&root, &system) else {
return Err(anyhow!("Expected project discovery to fail because the `requires-python` doesn't specify a lower bound (it only specifies an upper bound)."));
};
assert_error_eq(&error, "Invalid `requires-python` version specifier (`/app/pyproject.toml`): value `<3.12` does not contain a lower bound. Add a lower bound to indicate the minimum compatible Python version (e.g., `>=3.13`) or specify a version in `environment.python-version`.");
Ok(())
}
#[test]
fn requires_python_no_specifiers() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
requires-python = ""
"#,
)
.context("Failed to write file")?;
let Err(error) = ProjectMetadata::discover(&root, &system) else {
return Err(anyhow!("Expected project discovery to fail because the `requires-python` specifiers are empty and don't define a lower bound."));
};
assert_error_eq(&error, "Invalid `requires-python` version specifier (`/app/pyproject.toml`): value `` does not contain a lower bound. Add a lower bound to indicate the minimum compatible Python version (e.g., `>=3.13`) or specify a version in `environment.python-version`.");
Ok(())
}
#[test]
fn requires_python_too_large_major_version() -> anyhow::Result<()> {
let system = TestSystem::default();
let root = SystemPathBuf::from("/app");
system
.memory_file_system()
.write_file_all(
root.join("pyproject.toml"),
r#"
[project]
requires-python = ">=999.0"
"#,
)
.context("Failed to write file")?;
let Err(error) = ProjectMetadata::discover(&root, &system) else {
return Err(anyhow!("Expected project discovery to fail because of the requires-python major version that is larger than 255."));
};
assert_error_eq(&error, "Invalid `requires-python` version specifier (`/app/pyproject.toml`): The major version `999` is larger than the maximum supported value 255");
Ok(())
}
#[track_caller]
fn assert_error_eq(error: &ProjectDiscoveryError, message: &str) {
assert_eq!(error.to_string().replace('\\', "/"), message);
}
fn with_escaped_paths<R>(f: impl FnOnce() -> R) -> R {
let mut settings = insta::Settings::clone_current();
settings.add_dynamic_redaction(".root", |content, _path| {
content.as_str().unwrap().replace('\\', "/")
});
settings.bind(f)
}
}