Enum ExpressionError 

pub enum ExpressionError {
    ParseError {
        message: String,
        source: String,
    },
    InvalidExpression {
        message: String,
        source: String,
    },
}

Common Expression Error.

Variants

ParseError

Parse Error.

Fields

message: String

The error message.

source: String

The source expression.

InvalidExpression

Invalid Expression.

Fields

message: String

The error message.

source: String

The source expression.

Implementations

impl ExpressionError

pub fn parse_error( message: impl Into<String>, source: impl Into<String>, ) -> Self

Constructs a new ExpressionError::ParseError.

This function is a utility for creating instances where a parsing error needs to be represented, encapsulating a descriptive error message and the source of the error.

Parameters

• message: A value that can be converted into a String, representing a human-readable description of the parsing error.
• source: A value that can be converted into a String, typically identifying the origin or input that caused the parsing error.

pub fn invalid_expression( message: impl Into<String>, source: impl Into<String>, ) -> Self

Creates a new ExpressionError::InvalidExpression.

Parameters

• message: A detailed message describing the nature of the invalid expression. Accepts any type that can be converted into a String.
• source: The source or context in which the invalid expression occurred. Accepts any type that can be converted into a String.

Trait Implementations

impl Clone for ExpressionError

fn clone(&self) -> ExpressionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExpressionError

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

Formats the value using the given formatter.

impl Display for ExpressionError

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

Formats the value using the given formatter.

impl Error for ExpressionError

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.

impl PartialEq for ExpressionError

fn eq(&self, other: &ExpressionError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ExpressionError

impl StructuralPartialEq for ExpressionError