# Struct nom::error::VerboseError

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    pub struct VerboseError<I> {
        pub errors: Vec<(I, VerboseErrorKind)>,
    }

Expand description

This error type accumulates errors and their position when backtracking through a parse tree. With some post processing (cf `examples/json.rs`), it can be used to display user friendly error messages

## Fields

`errors: Vec<(I, VerboseErrorKind)>`

List of errors accumulated by `VerboseError`, containing the affected part of input data, and some context

## Trait Implementations

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### impl<I: Clone> Clone for VerboseError<I>

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#### fn clone(&self) -> VerboseError<I>

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from `source`. Read more

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### impl<I> ContextError<I> for VerboseError<I>

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#### fn add_context(input: I, ctx: &'static str, other: Self) -> Self

Creates a new error from an input position, a static string and an existing error. This is used mainly in the context combinator, to add user friendly information to errors when backtracking through a parse tree Read more

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### impl<I: Debug> Debug for VerboseError<I>

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

Formats the value using the given formatter. Read more

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### impl<I: Display> Display for VerboseError<I>

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

Formats the value using the given formatter. Read more

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### impl<I: Debug + Display> Error for VerboseError<I>

1.30.0 · source

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

The lower-level source of this error, if any. Read more

1.0.0 · source

#### fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

Read more
1.0.0 · source

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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#### fn provide(&'a self, req: &mut Demand<'a>)

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

Provides type based access to context intended for error reports. Read more

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### impl<I> ErrorConvert<VerboseError<(I, usize)>> for VerboseError<I>

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#### fn convert(self) -> VerboseError<(I, usize)>

Transform to another error type

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### impl<I> ErrorConvert<VerboseError<I>> for VerboseError<(I, usize)>

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#### fn convert(self) -> VerboseError<I>

Transform to another error type

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### impl<I, E> FromExternalError<I, E> for VerboseError<I>

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#### fn from_external_error(input: I, kind: ErrorKind, _e: E) -> Self

Create a new error from an input position and an external error

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### impl<I> ParseError<I> for VerboseError<I>

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#### fn from_error_kind(input: I, kind: ErrorKind) -> Self

Creates an error from the input position and an ErrorKind

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#### fn append(input: I, kind: ErrorKind, other: Self) -> Self

Combines an existing error with a new one created from the input position and an ErrorKind. This is useful when backtracking through a parse tree, accumulating error context on the way Read more

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#### fn from_char(input: I, c: char) -> Self

Creates an error from an input position and an expected character

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#### fn or(self, other: Self) -> Self

Combines two existing errors. This function is used to compare errors generated in various branches of `alt`. Read more

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### impl<I: PartialEq> PartialEq<VerboseError<I>> for VerboseError<I>

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#### fn eq(&self, other: &VerboseError<I>) -> bool

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

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#### fn ne(&self, other: &VerboseError<I>) -> bool

This method tests for `!=`.

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### impl<I> StructuralPartialEq for VerboseError<I>

## Auto Trait Implementations

### impl<I> RefUnwindSafe for VerboseError<I> where
I: RefUnwindSafe,

### impl<I> Send for VerboseError<I> where
I: Send,

### impl<I> Sync for VerboseError<I> where
I: Sync,

### impl<I> Unpin for VerboseError<I> where
I: Unpin,

### impl<I> UnwindSafe for VerboseError<I> where
I: UnwindSafe,

## Blanket Implementations

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### impl<T> Any for T where
T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more

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### impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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### impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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### impl<T> From<T> for T

const: unstable · source

#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

#### fn into(self) -> U

Calls `U::from(self)`.

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

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### impl<T> ToOwned for T where
T: Clone,

#### type Owned = T

The resulting type after obtaining ownership.

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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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### impl<T> ToString for T where
T: Display + ?Sized,

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#### default fn to_string(&self) -> String

Converts the given value to a `String`. Read more

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### impl<T, U> TryFrom<U> for T where
U: Into<T>,

#### type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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### impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.