Enum BindError 

#[non_exhaustive]
pub enum BindError {
    TooMany {
        item: usize,
    },
    PositionalAfterNamed {
        item: usize,
    },
    UnknownName {
        item: usize,
    },
    Duplicate {
        item: usize,
    },
    Missing {
        param: usize,
    },
}

Why a dynamic call’s arguments do not bind (ParamList::bind). A VM raises ArgumentError (E0114) for every variant; the variant is the detail a diagnostic can show.

Examples

use bytecode_lang::{ArgItem, BindError, ModuleBuilder, ParamList};

let module = ModuleBuilder::new().finish().unwrap();
let none = ParamList::new(vec![]);
assert_eq!(none.bind(&module, &[ArgItem::Positional]), Err(BindError::TooMany { item: 0 }));

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

TooMany

A positional argument with no parameter to take it.

Fields

item: usize

The argument’s item index.

PositionalAfterNamed

A positional argument after a named one (PHP’s “cannot use positional argument after named argument”).

Fields

item: usize

The argument’s item index.

UnknownName

A named argument no parameter takes.

Fields

item: usize

The argument’s item index.

Duplicate

A named argument for a parameter already filled, or a name repeated in a rest collection.

Fields

item: usize

The argument’s item index.

Missing

A parameter without default received nothing.

Fields

param: usize

The parameter.

Trait Implementations

impl Clone for BindError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BindError

impl Debug for BindError

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

Formats the value using the given formatter.

impl Display for BindError

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

Formats the value using the given formatter.

impl Eq for BindError

impl Error for BindError

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 PartialEq for BindError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BindError