Struct tvix_eval::value::CoercionKind

pub struct CoercionKind {
    pub strong: bool,
    pub import_paths: bool,
}

Describes what input types are allowed when coercing a Value to a string

Fields

strong: bool

If false only coerce already “stringly” types like strings and paths, but also coerce sets that have a __toString attribute. In Tvix, this is usually called a weak coercion. Equivalent to passing false as the coerceMore argument of EvalState::coerceToString in C++ Nix.

If true coerce all value types included by a weak coercion, but also coerce null, booleans, integers, floats and lists of coercible types. Consequently, we call this a strong coercion. Equivalent to passing true as coerceMore in C++ Nix.

import_paths: bool

If import_paths is true, paths are imported into the store and their store path is the result of the coercion (equivalent to the copyToStore argument of EvalState::coerceToString in C++ Nix).

Trait Implementations

impl Clone for CoercionKind

fn clone(&self) -> CoercionKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CoercionKind

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

Formats the value using the given formatter.

impl From<CoercionKind> for u8

fn from(k: CoercionKind) -> u8

Converts to this type from the input type.

impl From<u8> for CoercionKind

fn from(byte: u8) -> Self

Converts to this type from the input type.

impl PartialEq for CoercionKind

fn eq(&self, other: &CoercionKind) -> 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 Copy for CoercionKind

impl Eq for CoercionKind

impl StructuralPartialEq for CoercionKind