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use super::*;
#[cfg(not(feature = "thread-safe"))]
impl<T: ?Sized + 'static> Provider<T> {
/// Creates a singleton provider with module scope (single-threaded).
///
/// A singleton provider creates **one instance per injector module**.
/// Once created, the same instance is returned on subsequent resolutions
/// within the same module.
///
/// # Type Parameters
///
/// - `F`: Factory function type that takes an [`Injector`] reference and returns `Shared<T>`
///
/// # Arguments
///
/// - `factory`: A closure that creates the instance when first requested
///
/// # Examples
///
/// ```
/// use fluxdi::{Provider, Shared};
///
/// struct Config {
/// debug: bool,
/// }
///
/// let provider = Provider::singleton(|_injector| {
/// Shared::new(Config { debug: true })
/// });
/// ```
///
/// # Note
///
/// This is the single-threaded version. The factory does not need to be `Send + Sync`.
pub fn singleton<F>(factory: F) -> Provider<T>
where
F: Fn(&Injector) -> Shared<T> + 'static,
{
#[cfg(feature = "tracing")]
info!(
type_name = std::any::type_name::<T>(),
scope = %Scope::Module,
threading = "single-threaded",
factory_mode = "sync",
"Creating singleton provider"
);
Provider::<T> {
scope: Scope::Module,
factory: Box::new(move |injector| {
#[cfg(feature = "tracing")]
debug!(
type_name = std::any::type_name::<T>(),
scope = %Scope::Module,
op = "provider_factory_call",
"Executing singleton factory"
);
Instance::new(factory(injector))
}),
#[cfg(feature = "async-factory")]
async_factory: None,
limits: Limits::default(),
dependency_hints: Vec::new(),
limiter: None,
}
}
/// Creates a scope-scoped provider (single-threaded).
///
/// A scoped provider creates **one instance per runtime scope**
/// (see `Injector::create_scope()`).
pub fn scoped<F>(factory: F) -> Provider<T>
where
F: Fn(&Injector) -> Shared<T> + 'static,
{
#[cfg(feature = "tracing")]
info!(
type_name = std::any::type_name::<T>(),
scope = %Scope::Scoped,
threading = "single-threaded",
factory_mode = "sync",
"Creating scoped provider"
);
Provider::<T> {
scope: Scope::Scoped,
factory: Box::new(move |injector| Instance::new(factory(injector))),
#[cfg(feature = "async-factory")]
async_factory: None,
limits: Limits::default(),
dependency_hints: Vec::new(),
limiter: None,
}
}
/// Creates a transient provider (single-threaded).
///
/// A transient provider creates a **new instance on every resolution**.
/// No caching or instance reuse occurs.
///
/// # Type Parameters
///
/// - `F`: Factory function type that takes an [`Injector`] reference and returns `Shared<T>`
///
/// # Arguments
///
/// - `factory`: A closure that creates a new instance on each invocation
///
/// # Use Cases
///
/// - Request handlers
/// - Short-lived operations
/// - Stateful services that should not be shared
///
/// # Examples
///
/// ```
/// use fluxdi::{Provider, Shared};
///
/// struct RequestHandler {
/// id: u64,
/// }
///
/// let provider = Provider::transient(|_injector| {
/// Shared::new(RequestHandler {
/// id: std::time::SystemTime::now()
/// .duration_since(std::time::UNIX_EPOCH)
/// .unwrap()
/// .as_nanos() as u64,
/// })
/// });
/// ```
///
/// # Note
///
/// This is the single-threaded version. The factory does not need to be `Send + Sync`.
pub fn transient<F>(factory: F) -> Provider<T>
where
F: Fn(&Injector) -> Shared<T> + 'static,
{
#[cfg(feature = "tracing")]
info!(
type_name = std::any::type_name::<T>(),
scope = %Scope::Transient,
threading = "single-threaded",
factory_mode = "sync",
"Creating transient provider"
);
Provider::<T> {
scope: Scope::Transient,
factory: Box::new(move |injector| {
#[cfg(feature = "tracing")]
debug!(
type_name = std::any::type_name::<T>(),
scope = %Scope::Transient,
op = "provider_factory_call",
"Executing transient factory"
);
Instance::new(factory(injector))
}),
#[cfg(feature = "async-factory")]
async_factory: None,
limits: Limits::default(),
dependency_hints: Vec::new(),
limiter: None,
}
}
/// Creates a root-scoped provider (single-threaded).
///
/// A root provider creates **one instance per root injector** (application-wide).
/// This is the highest level of singleton, shared across all child injectors.
///
/// # Type Parameters
///
/// - `F`: Factory function type that takes an [`Injector`] reference and returns `Shared<T>`
///
/// # Arguments
///
/// - `factory`: A closure that creates the instance when first requested
///
/// # Use Cases
///
/// - Application configuration
/// - Logging infrastructure
/// - Connection pools
/// - Global caches
///
/// # Examples
///
/// ```
/// use fluxdi::{Provider, Shared};
///
/// struct AppConfig {
/// version: String,
/// }
///
/// let provider = Provider::root(|_injector| {
/// Shared::new(AppConfig {
/// version: "1.0.0".to_string(),
/// })
/// });
/// ```
///
/// # Note
///
/// This is the single-threaded version. The factory does not need to be `Send + Sync`.
pub fn root<F>(factory: F) -> Provider<T>
where
F: Fn(&Injector) -> Shared<T> + 'static,
{
#[cfg(feature = "tracing")]
info!(
type_name = std::any::type_name::<T>(),
scope = %Scope::Root,
threading = "single-threaded",
factory_mode = "sync",
"Creating root provider"
);
Provider::<T> {
scope: Scope::Root,
factory: Box::new(move |injector| {
#[cfg(feature = "tracing")]
debug!(
type_name = std::any::type_name::<T>(),
scope = %Scope::Root,
op = "provider_factory_call",
"Executing root factory"
);
Instance::new(factory(injector))
}),
#[cfg(feature = "async-factory")]
async_factory: None,
limits: Limits::default(),
dependency_hints: Vec::new(),
limiter: None,
}
}
/// Creates a singleton provider with resource limits.
pub fn singleton_with_limits<F>(limits: Limits, factory: F) -> Provider<T>
where
F: Fn(&Injector) -> Shared<T> + 'static,
{
Self::singleton(factory).with_limits(limits)
}
/// Creates a transient provider with resource limits.
pub fn transient_with_limits<F>(limits: Limits, factory: F) -> Provider<T>
where
F: Fn(&Injector) -> Shared<T> + 'static,
{
Self::transient(factory).with_limits(limits)
}
/// Creates a root provider with resource limits.
pub fn root_with_limits<F>(limits: Limits, factory: F) -> Provider<T>
where
F: Fn(&Injector) -> Shared<T> + 'static,
{
Self::root(factory).with_limits(limits)
}
/// Creates a scoped provider with resource limits.
pub fn scoped_with_limits<F>(limits: Limits, factory: F) -> Provider<T>
where
F: Fn(&Injector) -> Shared<T> + 'static,
{
Self::scoped(factory).with_limits(limits)
}
}