Enum CommandArg 

pub enum CommandArg {
    Literal(Value),
    Label(String),
    UnitExpr(UnitArg),
}

A parsed constraint command argument, preserving the literal kind from the grammar rule command_arg: { number_literal | boolean_literal | text_literal | label }.

Three grammatical kinds appear after a constraint command:

• Literal — a fully-typed value carrying the literal kind the parser recognised (Number, Ratio, Quantity, Date, Time, Boolean, Text). Stored as the canonical crate::literals::Value so downstream consumers match on the variant rather than re-parsing strings.
• Label — a bare identifier used as a name (e.g. the unit name eur in unit eur 1.00, or a primitive type keyword used as an option label).
• UnitExpr — compound unit expression produced by the parser for -> unit <name> ... commands. Only appears as the second argument of a Unit command; the first argument is always the unit name as Label.

Planning validates each command’s args against the variant kinds it accepts and rejects mismatches without coercion (a Text literal is never a Number, a Ratio literal is never a bare Number, etc.).

Variants

Literal(Value)

A typed literal value parsed by [crate::parsing::parser::Parser::parse_literal_value].

Label(String)

An identifier used as a name (unit name, option keyword, etc.).

UnitExpr(UnitArg)

A unit argument produced by the parser for -> unit <name> ... commands.

Trait Implementations

impl Clone for CommandArg

fn clone(&self) -> CommandArg

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CommandArg

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CommandArg

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for CommandArg

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

Formats the value using the given formatter.

impl PartialEq for CommandArg

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for CommandArg

impl StructuralPartialEq for CommandArg