Enum Error 

#[non_exhaustive]
pub enum Error {
    EmptyStack,
    NoStack,
    NoVariables,
    Unavailable(&'static str),
    Truncated,
    OutOfMemory,
    UnsupportedApiVersion {
        found: i32,
        required: i32,
    },
    Failed,
}

What can go wrong at the plug-in boundary.

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.

EmptyStack

Popped from an empty stack. Mirrors popstring returning 1.

NoStack

The installer passed a null stacktop, so there is no stack at all.

NoVariables

The installer passed a null variables array.

Unavailable(&'static str)

The installer passed a null extra_parameters, or a null member of it.

The name is the C field that was missing.

Truncated

The value was written, but did not fit in string_size characters.

The truncated value is stored — this mirrors lstrcpyn — and the error exists so the caller can decide whether that matters.

OutOfMemory

GlobalAlloc returned null.

UnsupportedApiVersion

The installer is older than the plug-in ABI version required.

Fields

found: i32

What exec_flags->plugin_api_version reported.

required: i32

What was required.

Failed

The plug-in’s own error, for ? in user code that has no better fit.

Trait Implementations

impl Clone for Error

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 Error

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Eq for Error

impl Error for Error

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 Error

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Error