Enum ExprLowerError 

pub enum ExprLowerError {
    Type(HirLowerError),
    ModuleResolve {
        source: ModuleResolveError,
        span: Span,
    },
    InvalidScopedNameSegment {
        segment: String,
        source: NameAtomError,
        span: Span,
    },
    UnknownLocalRef {
        name: LocalName,
        span: Span,
    },
    UnknownGraphRef {
        name: ScopedName,
        span: Span,
    },
    TooManyLocals {
        span: Span,
    },
    EmptyMapEntry {
        span: Span,
    },
    ExtraMapVariant {
        index_name: IndexName,
        variant_name: IndexVariantName,
        span: Span,
    },
    DuplicateLocalBinding {
        name: LocalName,
        first: Span,
        duplicate: Span,
    },
    UnknownFunction {
        path: String,
        span: Span,
    },
    WrongArity {
        name: FnName,
        expected: usize,
        got: usize,
        span: Span,
    },
    UnknownPattern {
        path: String,
        span: Span,
    },
}

Errors produced while lowering syntax expressions into HIR.

Variants

Type(HirLowerError)

A type-level generic argument failed to lower.

ModuleResolve

A module-aware lookup failed at an expression use site.

Fields

source: ModuleResolveError

span: Span

InvalidScopedNameSegment

A structured diagnostic name contained a segment that cannot be a source name atom.

Fields

segment: String

source: NameAtomError

span: Span

UnknownLocalRef

A local reference had no lexical binding in scope.

Fields

name: LocalName

span: Span

UnknownGraphRef

A graph reference (@name) did not resolve to any declaration.

Fields

name: ScopedName

span: Span

TooManyLocals

A single expression tree introduced more local bindings than HIR can index.

Fields

span: Span

EmptyMapEntry

A map literal entry unexpectedly had no keys after syntax lowering.

Fields

span: Span

ExtraMapVariant

A map literal used a key variant that is not declared by its index.

Fields

index_name: IndexName

variant_name: IndexVariantName

span: Span

DuplicateLocalBinding

One lexical scope introduced the same local name twice.

Fields

name: LocalName

first: Span

duplicate: Span

UnknownFunction

A function call could not be resolved to a built-in function.

Fields

path: String

span: Span

WrongArity

A built-in function was called with the wrong number of arguments.

Fields

name: FnName

expected: usize

got: usize

span: Span

UnknownPattern

A path-pattern could not be resolved to a constructor or index label.

Fields

path: String

span: Span

Trait Implementations

impl Clone for ExprLowerError

fn clone(&self) -> ExprLowerError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExprLowerError

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

Formats the value using the given formatter.

impl Display for ExprLowerError

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

Formats the value using the given formatter.

impl Eq for ExprLowerError

impl Error for ExprLowerError

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<HirLowerError> for ExprLowerError

fn from(source: HirLowerError) -> Self

Converts to this type from the input type.

impl PartialEq for ExprLowerError

fn eq(&self, other: &ExprLowerError) -> 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 StructuralPartialEq for ExprLowerError