Struct icu::plurals::rules::ast::Relation

pub struct Relation {
    pub expression: Expression,
    pub operator: Operator,
    pub range_list: RangeList,
}

An incomplete AST representation of a plural rule. Comprises an Expression, an Operator, and a RangeList.

Examples

All AST nodes can be built explicitly, as seen in the example. However, due to its complexity, it is preferred to build the AST using the parse_plural_rule function.

"i = 3"

Can be represented by the AST:

use icu_plurals::rules::ast::*;

Relation {
    expression: Expression {
        operand: Operand::I,
        modulus: None,
    },
    operator: Operator::Eq,
    range_list: RangeList(Box::new([RangeListItem::Value(Value(3))])),
};

Fields

expression: Expression

operator: Operator

range_list: RangeList

Trait Implementations

impl Clone for Relation

fn clone(&self) -> Relation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Relation

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

Formats the value using the given formatter.

impl PartialEq<Relation> for Relation

fn eq(&self, other: &Relation) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Relation) -> bool

This method tests for !=.

impl StructuralPartialEq for Relation