Enum ResolveError 

pub enum ResolveError {
    Malformed {
        input: String,
        reason: String,
    },
    UnknownVar {
        name: String,
    },
    Cycle {
        name: String,
        chain: String,
    },
    WrongPlatform {
        name: String,
        required: Platform,
        current: Platform,
    },
}

Things that can go wrong while resolving a path expression.

Variants

Malformed

The expression couldn’t be tokenized (unclosed ${, empty ${}, …).

Fields

input: String

The exact expression that failed.

reason: String

What went wrong.

UnknownVar

${NAME} referenced a var we don’t know about.

Fields

name: String

Name of the missing var.

Cycle

Var resolution looped back on itself.

Fields

name: String

Var that started the cycle.

chain: String

a -> b -> c -> a style chain for the error message.

WrongPlatform

${WIN_*} used outside Windows or ${MAC_*} outside macOS.

Fields

name: String

Var that’s platform-gated.

required: Platform

Platform that var is available on.

current: Platform

Platform we’re actually running on.

Trait Implementations

impl Debug for ResolveError

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

Formats the value using the given formatter.

impl Display for ResolveError

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

Formats the value using the given formatter.

impl Error for ResolveError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<ResolveError> for PredicateError

fn from(e: ResolveError) -> Self

Converts to this type from the input type.

impl PartialEq for ResolveError

fn eq(&self, other: &ResolveError) -> 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 Eq for ResolveError

impl StructuralPartialEq for ResolveError