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* Move salsa event system into `Zalsa` * Encode `None` into ShallowUpdate This shrinks the return value from 16 to 8 bytes
52 lines
1.2 KiB
Rust
52 lines
1.2 KiB
Rust
use tracing::Level;
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use crate::storage::HasStorage;
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use crate::{Database, Storage};
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/// Default database implementation that you can use if you don't
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/// require any custom user data.
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#[derive(Clone)]
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pub struct DatabaseImpl {
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storage: Storage<Self>,
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}
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impl Default for DatabaseImpl {
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fn default() -> Self {
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Self {
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// Default behavior: tracing debug log the event.
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storage: Storage::new(if tracing::enabled!(Level::DEBUG) {
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Some(Box::new(|event| {
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tracing::debug!("salsa_event({:?})", event)
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}))
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} else {
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None
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}),
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}
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}
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}
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impl DatabaseImpl {
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/// Create a new database; equivalent to `Self::default`.
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pub fn new() -> Self {
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Self::default()
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}
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pub fn storage(&self) -> &Storage<Self> {
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&self.storage
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}
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}
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impl Database for DatabaseImpl {}
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// SAFETY: The `storage` and `storage_mut` fields return a reference to the same storage field owned by `self`.
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unsafe impl HasStorage for DatabaseImpl {
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#[inline(always)]
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fn storage(&self) -> &Storage<Self> {
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&self.storage
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}
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#[inline(always)]
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fn storage_mut(&mut self) -> &mut Storage<Self> {
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&mut self.storage
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}
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}
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