Struct SelectDef 

pub struct SelectDef {
    pub val: Box<Expression>,
    pub default: Option<Box<Expression>>,
    pub tuple: FieldList,
    pub pos: Position,
}

Encodes a select expression in the UCG AST.

Fields

val: Box<Expression>

default: Option<Box<Expression>>

tuple: FieldList

pos: Position

Trait Implementations

impl Clone for SelectDef

fn clone(&self) -> SelectDef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectDef

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

Formats the value using the given formatter.

impl DeriveShape for SelectDef

fn derive_shape(&self, symbol_table: &mut BTreeMap<Rc<str>, Shape>) -> Shape

Derive a shape using a provided symbol table.

impl PartialEq for SelectDef

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