Struct darling::Error

source ·
pub struct Error { /* private fields */ }
Expand description

An error encountered during attribute parsing.

Given that most errors darling encounters represent code bugs in dependent crates, the internal structure of the error is deliberately opaque.

Implementations§

Creates a new error with a custom message.

Creates a new error for a field that appears twice in the input.

Creates a new error for a non-optional field that does not appear in the input.

Creates a new error for a field name that appears in the input but does not correspond to a known field.

Creates a new error for a struct or variant that does not adhere to the supported shape.

Creates a new error for a field which has an unexpected literal type.

Creates a new error for a value which doesn’t match a set of expected literals.

Creates a new error for a list which did not get enough items to proceed.

Creates a new error when a list got more items than it supports. The max argument is the largest number of items the receiver could accept.

Bundle a set of multiple errors into a single Error instance.

Panics

This function will panic if errors.is_empty() == true.

Recursively converts a tree of errors to a flattened list.

Adds a location to the error, such as a field or variant. Locations must be added in reverse order of specificity.

Gets the number of individual errors in this error.

This function should never return 0, as it shouldn’t be possible to construct a multi-error from an empty Vec.

Trait Implementations§

Formats the value using the given formatter. Read more
Formats the value using the given formatter. Read more
👎Deprecated since 1.42.0: use the Display impl or to_string()
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
The lower-level source of this error, if any. Read more
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type based access to context intended for error reports. Read more
The type of the elements being iterated over.
Which kind of iterator are we turning this into?
Creates an iterator from a value. Read more

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

🔬This is a nightly-only experimental API. (provide_any)
Data providers should implement this method to provide all values they are able to provide by using demand. Read more
Converts the given value to a String. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.