Struct PatField 

pub struct PatField {
    pub key: String,
    pub pat: Pat,
    pub default: Option<Expr>,
}

A field in an object destructuring pattern.

Represents one entry in { key: pat = default }.

Fields

key: String

The source property key (e.g. "b" in { b: c }).

pat: Pat

The binding target pattern (e.g. Pat::Ident("c") in { b: c }).

default: Option<Expr>

Optional default value (e.g. "foo" in { a = "foo" }).

Implementations

impl PatField

pub fn shorthand(key: impl Into<String>) -> Self

Create a shorthand field: { key } binds key to Pat::Ident(key).

pub fn renamed(key: impl Into<String>, name: impl Into<String>) -> Self

Create a renamed field: { key: name }.

pub fn nested(key: impl Into<String>, pat: Pat) -> Self

Create a field with a nested pattern: { key: pat }.

pub fn with_default(self, default: Expr) -> Self

Attach a default value to this field.

Trait Implementations

impl Clone for PatField

fn clone(&self) -> PatField

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PatField

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PatField

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PatField

fn eq(&self, other: &PatField) -> 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 Serialize for PatField

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructureEq for PatField

fn structure_eq(&self, other: &Self) -> bool

Compare two values for structural equality.

impl StructuralPartialEq for PatField