Enum ParseError 

pub enum ParseError {
    EmptyResponse,
    Unparseable {
        expected_format: &'static str,
        text: String,
    },
    DeserializationFailed {
        reason: String,
        raw_json: String,
    },
    NoMatchingChoice {
        valid: Vec<String>,
    },
    NoNumber,
    TooLarge {
        size: usize,
        limit: usize,
    },
    TooDeep {
        depth: usize,
        limit: usize,
    },
}

Errors returned by output parsers.

Variants

EmptyResponse

The LLM response was empty or whitespace-only.

Unparseable

No parsing strategy could extract the expected format.

Fields

expected_format: &'static str

The format the parser was trying to extract.

text: String

A truncated copy of the cleaned LLM text (max 200 chars).

DeserializationFailed

JSON was extracted but failed to deserialize into the target type.

Fields

reason: String

The serde error message.

raw_json: String

The raw JSON string that failed deserialization.

NoMatchingChoice

No valid choice from the provided options was found.

Fields

valid: Vec<String>

The list of choices that were searched for.

NoNumber

No number found, or number was outside the expected range.

TooLarge

Input exceeds ParseOptions::max_input_bytes.

Fields

size: usize

Actual input size in bytes.

limit: usize

Configured limit in bytes.

TooDeep

JSON nesting exceeds ParseOptions::max_nesting_depth.

Fields

depth: usize

Detected nesting depth.

limit: usize

Configured limit.

Implementations

impl ParseError

pub fn kind(&self) -> &'static str

Stable string discriminant for programmatic matching.

Trait Implementations

impl Debug for ParseError

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

Formats the value using the given formatter.

impl Display for ParseError

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

Formats the value using the given formatter.

impl Error for ParseError

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.