Enum RCondition 

#[doc(hidden)]
pub enum RCondition {
    Error {
        message: String,
        class: Option<String>,
    },
    Warning {
        message: String,
        class: Option<String>,
    },
    Message {
        message: String,
    },
    Condition {
        message: String,
        class: Option<String>,
    },
}

Internal panic payload for structured R conditions.

Raised by the error!(), warning!(), message!(), and condition!() macros via std::panic::panic_any. Caught by with_r_unwind_protect_error_in_r before the generic panic→string path and forwarded to R as a tagged SEXP with rust_* class layering.

This type is #[doc(hidden)] because users interact with the macros, not the enum directly.

Variants

Error

Raised by error!(...) / error!(class = "...", ...).

Fields

message: String

class: Option<String>

Warning

Raised by warning!(...) / warning!(class = "...", ...).

Fields

message: String

class: Option<String>

Message

Raised by message!(...).

Fields

message: String

Condition

Raised by condition!(...) / condition!(class = "...", ...).

Fields

message: String

class: Option<String>

Implementations

impl RCondition

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

Reconstruct an RCondition::Error from a tagged SEXP produced by crate::error_value::make_rust_condition_value.

Returns Some(RCondition) when sexp has class "rust_condition_value" AND the "__rust_condition__" attribute is TRUE. Returns None for all other SEXPs (normal return values, R_NilValue, etc.).

Reconstructs the matching variant for each kind: "error"/"panic"/ "result_err"/"none_err"/"other_rust_error" → RCondition::Error; "warning" → RCondition::Warning; "message" → RCondition::Message; "condition" → RCondition::Condition. Unknown kinds degrade to RCondition::Error with the kind string prefixed to the message.

Safety

Must be called from R’s main thread.

Trait Implementations

impl Debug for RCondition

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

Formats the value using the given formatter.

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: 56 bytes

Size for each variant:

• Error: 48 bytes
• Warning: 48 bytes
• Message: 24 bytes
• Condition: 48 bytes