Struct QueryCache 

pub struct QueryCache<R> {
    path: Option<PathBuf>,
    entries: FxHashMap<String, QueryVal<R>>,
}

Fields

path: Option<PathBuf>

Where the cache is saved. None if caching is disabled.

entries: FxHashMap<String, QueryVal<R>>

Implementations

impl<R> QueryCache<R>

pub fn new() -> Self

pub fn insert(&mut self, key: String, constr_hash: u64, result: R)

pub fn lookup(&self, key: &String, constr_hash: u64) -> Option<&R>

pub fn lookup_by_key(&self, key: &str) -> Option<&R>

Look up a result by key only (no hash validation).

pub fn update_result_by_key(&mut self, key: &str, f: impl FnOnce(&mut R))

Mutate a cached result by key only (no hash validation).

impl<R: Debug + Serialize + DeserializeOwned> QueryCache<R>

pub fn save(&self) -> Result<(), Error>

Saves the cache to the file it was loaded from, overwriting it. Does nothing if the cache was not loaded from a file.

pub fn load(path: PathBuf) -> Self

Loads the cache from path, starting with an empty cache if the file is missing or invalid. The cache is later saved to the same path.

Trait Implementations

impl<R> Default for QueryCache<R>

fn default() -> Self

Returns the “default value” for a type.