Enum EvalErrorKind 

pub enum EvalErrorKind {
    Other(String),
    TypeMismatch {
        expected: String,
        found: String,
    },
    TypeMismatchArg {
        arg: &'static str,
        expected: String,
        found: String,
    },
    CouldNotParse {
        ty: &'static str,
        value: String,
    },
    CouldNotConvertToNumber {
        value: String,
    },
    ArrayIndexNegative {
        index: f64,
    },
    ArrayIndexOutOfBounds {
        index: f64,
        max: usize,
    },
    ArrayIndexNotInteger {
        index: f64,
    },
    InvalidRgba {
        value: String,
        reason: &'static str,
    },
    NotOrderedComparable {
        op: String,
        lhs: String,
        rhs: String,
    },
    SearchNeedle {
        found: String,
    },
    InterpolationOutputs,
    MaxCallDepth {
        op: String,
    },
    ZoomUnavailable,
    Unimplemented {
        op: String,
    },
    UnknownVariable {
        name: String,
    },
}

The semantic cause of an evaluation error.

Variants

Other(String)

A message-only error: the user-thrown ["error", msg] operator, or a parse error wrapped while compiling a user function body.

TypeMismatch

A value was not of the expected type.

Fields

expected: String

found: String

TypeMismatchArg

Like TypeMismatch, but naming the offending argument (e.g. "second argument") instead of the generic “value”.

Fields

arg: &'static str

expected: String

found: String

CouldNotParse

A value could not be parsed into a type (to-color, coercions, …). value is already rendered (raw string, else JSON.stringify).

Fields

ty: &'static str

value: String

CouldNotConvertToNumber

A value could not be converted to a number (to-number).

Fields

value: String

ArrayIndexNegative

An at index was negative.

Fields

index: f64

ArrayIndexOutOfBounds

An at index was past the end of the array.

Fields

index: f64

max: usize

ArrayIndexNotInteger

An at index was not an integer.

Fields

index: f64

InvalidRgba

An rgb/rgba/to-color array value was out of range or malformed. reason is the clause after the value.

Fields

value: String

reason: &'static str

NotOrderedComparable

Ordered comparison of two runtime values of incompatible types.

Fields

op: String

lhs: String

rhs: String

SearchNeedle

An in/index-of needle was not a primitive.

Fields

found: String

InterpolationOutputs

An interpolation produced an uninterpolatable output at runtime.

MaxCallDepth

A user function recursed past the call-depth limit.

Fields

op: String

ZoomUnavailable

zoom used where no zoom is available.

Unimplemented

An operator MapLibre defines but this crate does not evaluate yet.

Fields

op: String

UnknownVariable

An unbound var reference at evaluation time.

Fields

name: String

Trait Implementations

impl Clone for EvalErrorKind

fn clone(&self) -> EvalErrorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EvalErrorKind

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

Formats the value using the given formatter.

impl Display for EvalErrorKind

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

Formats the value using the given formatter.

impl PartialEq for EvalErrorKind

fn eq(&self, other: &EvalErrorKind) -> 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 StructuralPartialEq for EvalErrorKind