Struct Cache 

pub struct Cache {
    pub schema: String,
    pub version: String,
    pub tiers: CachedTier,
}

The cache file of one checkout.

Fields

schema: String

SCHEMA.

version: String

The executable that wrote it: a build with different types must not read another’s entries back into them.

tiers: CachedTier

The tiers.

Implementations

impl Cache

pub fn path(root: &Path, local_half: &str) -> PathBuf

Where the cache of this checkout is.

pub fn load(root: &Path, local_half: &str) -> Cache

Read the cache, or a fresh empty one. Never fails: an unreadable, truncated, foreign or corrupt file is a miss, and the next write replaces it.

pub fn store(&self, root: &Path, local_half: &str) -> Result<()>

Write the cache atomically. A failure is reported to the caller and is never fatal: a read-only checkout must still produce a snapshot, just not a cheaper next one.

pub fn entry<T>(fingerprint: String, value: T) -> Entry<T>

An entry for a value computed now.

Trait Implementations

impl Clone for Cache

fn clone(&self) -> Cache

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Cache

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Cache

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Cache

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Cache

impl PartialEq for Cache

fn eq(&self, other: &Cache) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Cache

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Cache