Enum VariableError 

pub enum VariableError {
    Undefined(String),
    AlreadyExists(String),
    InvalidIdentifier(String),
    UnexpectedNull,
    InvalidArray,
    IntegerOutOfRange,
    InvalidType {
        variable: String,
        expected_type: String,
        actual_type: String,
    },
}

Error returned while defining or setting variables.

Variants

Undefined(String)

The variable has not being defined. Before calling crate::Scanner::set_global the variable must be defined with a call to crate::Compiler::define_global.

AlreadyExists(String)

A variable with the same name already exists.

InvalidIdentifier(String)

The identifier is not valid. Identifiers can only contain alphanumeric characters and underscores, and can’t start with a digit.

UnexpectedNull

The value of a variable cannot be null. This may happen when using a serde_json::Value, as JSON values can be null.

InvalidArray

Invalid array. Arrays can’t be empty, and all items must be non-null and have the same type.

IntegerOutOfRange

Integer value is out of range.

InvalidType

A variable has been previously defined with a different type. You can not call crate::Scanner::set_global and pass a value that don’t match the already defined type.

Fields

variable: String

Variable name.

expected_type: String

Name of the expected type.

actual_type: String

Name of the actual type.

Trait Implementations

impl Debug for VariableError

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

Formats the value using the given formatter.

impl Display for VariableError

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

Formats the value using the given formatter.

impl Error for VariableError

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 VariableError

fn eq(&self, other: &VariableError) -> 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 VariableError

impl StructuralPartialEq for VariableError