Skip to main content

PreconditionOutput

miniextendr_macros::r_preconditions

Struct PreconditionOutput

pub struct PreconditionOutput {
    pub static_checks: Vec<String>,
    pub fallback_params: Vec<FallbackParam>,
}

Expand description

Output of precondition analysis for a function’s parameters.

Contains both the generated R stopifnot() code for known types and a list of parameters with unknown types that were not statically prechecked.

Fields§

§static_checks: Vec<String>

Lines forming a stopifnot(...) call for known types.

Empty if no parameters have known type checks. For a single assertion, contains one line (stopifnot(...)). For multiple assertions, contains stopifnot(, indented assertion lines, and ).

§fallback_params: Vec<FallbackParam>

Parameters with unknown custom types that were not prechecked.

Auto Trait Implementations§

impl Freeze for PreconditionOutput

impl RefUnwindSafe for PreconditionOutput

impl Send for PreconditionOutput

impl Sync for PreconditionOutput

impl Unpin for PreconditionOutput

impl UnsafeUnpin for PreconditionOutput

impl UnwindSafe for PreconditionOutput

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

fn into(self) -> U

Calls U::from(self).

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

impl<T> SizedTypeProperties for T

#[doc(hidden)]
const SIZE: usize = _

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

#[doc(hidden)]
const ALIGN: usize = _

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

#[doc(hidden)]
const ALIGNMENT: Alignment = _

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

#[doc(hidden)]
const IS_ZST: bool = _

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

true if this type requires no storage. false if its size is greater than zero. Read more

#[doc(hidden)]
const LAYOUT: Layout = _

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

#[doc(hidden)]
const MAX_SLICE_LEN: usize = _

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

The largest safe length for a [Self]. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

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.

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

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 48 bytes