Enum Unavailability 

pub enum Unavailability {
    RequiresExecution,
    MetadataUnavailable,
    NoBuildInformation,
    ToolchainMismatch,
    HelperTimedOut,
    HelperDied,
    UnreadableSchema,
    ResponseTooLarge,
    RestartBudgetExhausted,
    NotSupported,
}

Why a unit has no compiler IR.

A first-class outcome rather than an error: a scan of a real project will have units nobody can analyze — a crate whose build script would have to run, a file no compile command mentions — and reporting less about those is the correct result, not a failed run.

Variants

RequiresExecution

Analyzing it would mean running code from the project.

MetadataUnavailable

Cargo cannot resolve dependencies without network access or a lockfile change.

NoBuildInformation

Nothing says how the file is compiled.

ToolchainMismatch

The helper was built for a different toolchain than the project uses.

HelperTimedOut

The helper took too long and was given up on.

HelperDied

The helper stopped before answering.

UnreadableSchema

The helper answered, but not in a schema this build reads.

ResponseTooLarge

The helper produced an IR response over the protocol frame ceiling.

RestartBudgetExhausted

Consecutive helper crashes exhausted the restart budget for this run.

NotSupported

The helper does not analyze this kind of input.

Implementations

impl Unavailability

pub const fn name(self) -> &'static str

Stable lowercase identifier, the same spelling this serializes as.

pub const fn worth_retrying(self) -> bool

Whether trying the same unit again could plausibly go differently.

A helper that died might have died on this input in particular, and retrying costs one more crash to find out. A helper that says the input needs execution will say so every time, and retrying is only slower.

Trait Implementations

impl Clone for Unavailability

fn clone(&self) -> Unavailability

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Unavailability

impl Debug for Unavailability

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Unavailability

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Unavailability

impl PartialEq for Unavailability

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Unavailability

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 Unavailability