Struct RErrorView 

pub struct RErrorView {
    __mx_view: TraitViewData<RErrorVTable>,
}

Runtime view for objects implementing RError. Generated from source location line 298, column 11. Generated from source file miniextendr-api/src/adapter_traits.rs.

Keeps the receiver alive for method dispatch. Use try_from_sexp to create a view with its own root for the R external pointer. Construction, use and drop belong on R’s main thread.

Fields

__mx_view: TraitViewData<RErrorVTable>

Implementations

impl RErrorView

pub unsafe fn try_from_sexp(sexp: SEXP) -> Option<Self>

Try to create a view from an R SEXP.

Returns Some(Self) if the object implements this trait, None otherwise.

Safety

• sexp must be a valid R external pointer (EXTPTRSXP)
• The object must stay live through construction; the view then roots it
• A call that conflicts with one still running on the same object raises the miniextendr_borrow_conflict error
• Construction, use and drop must all run on R’s main thread

pub unsafe fn from_sexp(sexp: SEXP) -> Self

Try to create a view, panicking with error message on failure.

Safety

Same as try_from_sexp.

pub fn error_message(&self) -> String

Call error_message through the vtable.

pub fn error_chain(&self) -> Vec<String>

Call error_chain through the vtable.

pub fn error_chain_length(&self) -> i32

Call error_chain_length through the vtable.

Trait Implementations

impl TraitView for RErrorView

const TAG: mx_tag = TAG_RError

The type tag for this trait.

unsafe fn from_raw_parts( data: *mut c_void, vtable: *const c_void, owner: Option<SEXP>, ) -> Self

Create a view from raw data and vtable pointers.

unsafe fn try_from_sexp(sexp: SEXP) -> Option<Self>

Try to create a view from an R SEXP.

unsafe fn try_from_sexp_or_error( sexp: SEXP, trait_name: &str, ) -> Result<Self, String>

Try to create a view, returning an error message on failure.

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: 40 bytes