Enum FugueError 

pub enum FugueError {
    InvalidParameters {
        distribution: String,
        reason: String,
        code: ErrorCode,
        context: ErrorContext,
    },
    ModelError {
        address: Option<Address>,
        reason: String,
        code: ErrorCode,
        context: ErrorContext,
    },
    TraceError {
        operation: String,
        address: Option<Address>,
        reason: String,
        code: ErrorCode,
        context: ErrorContext,
    },
    TypeMismatch {
        address: Address,
        expected: String,
        found: String,
        code: ErrorCode,
        context: ErrorContext,
    },
}

Errors that can occur during probabilistic programming operations.

Every variant is constructed by real logic in the crate (FG-33): the speculative NumericalError and InferenceError variants were removed because nothing produced them — see the module-level docs.

Variants

InvalidParameters

Invalid distribution parameters

Fields

distribution: String

reason: String

code: ErrorCode

context: ErrorContext

ModelError

Model execution failed

Fields

address: Option<Address>

reason: String

code: ErrorCode

context: ErrorContext

TraceError

Trace manipulation error

Fields

operation: String

address: Option<Address>

reason: String

code: ErrorCode

context: ErrorContext

TypeMismatch

Type mismatch in trace value

Fields

address: Address

expected: String

found: String

code: ErrorCode

context: ErrorContext

Implementations

impl FugueError

pub fn code(&self) -> ErrorCode

Get the error code for programmatic handling.

pub fn category(&self) -> ErrorCategory

Get the error category for high-level handling.

pub fn context(&self) -> &ErrorContext

Get the error context for debugging.

pub fn is_validation_error(&self) -> bool

Check if this error is caused by parameter validation issues.

pub fn with_context( self, key: impl Into<String>, value: impl Into<String>, ) -> Self

Add context to an existing error.

pub fn with_source_location(self, file: impl Into<String>, line: u32) -> Self

Add source location to an existing error.

impl FugueError

pub fn invalid_parameters( distribution: impl Into<String>, reason: impl Into<String>, code: ErrorCode, ) -> Self

Create an InvalidParameters error with enhanced context.

pub fn invalid_parameters_with_context( distribution: impl Into<String>, reason: impl Into<String>, code: ErrorCode, context: ErrorContext, ) -> Self

Create an InvalidParameters error with context.

pub fn trace_error( operation: impl Into<String>, address: Option<Address>, reason: impl Into<String>, code: ErrorCode, ) -> Self

Create a TraceError with enhanced context.

pub fn type_mismatch( address: Address, expected: impl Into<String>, found: impl Into<String>, ) -> Self

Create a TypeMismatch error with enhanced context.

Trait Implementations

impl Clone for FugueError

fn clone(&self) -> FugueError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FugueError

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

Formats the value using the given formatter.

impl Display for FugueError

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

Formats the value using the given formatter.

impl Error for FugueError

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.