Enum Parameter 

pub enum Parameter<S = String> {
    Null,
    Derived,
    Bool(bool),
    LogicalUnknown,
    Integer(S),
    Real(S),
    Text(S),
    Binary(S),
    Enum(S),
    Ref(InstanceId),
    List(Vec<Self>),
    Typed {
        type_name: S,
        value: Box<Self>,
    },
}

One generic parameter value.

Variants

Null

$, an omitted value.

Derived

*, a derived value.

Bool(bool)

.T. or .F..

LogicalUnknown

.U., the third logical state.

Integer(S)

Integer lexical form, preserved without a fixed precision limit.

Real(S)

Real lexical form, preserved without a fixed precision limit.

Text(S)

Decoded text.

Binary(S)

Binary digits without surrounding quotes.

Enum(S)

An enumeration name without surrounding dots.

Ref(InstanceId)

A # reference.

List(Vec<Self>)

A parenthesized aggregate.

Typed

A named parameter wrapper.

Fields

type_name: S

Wrapper name.

value: Box<Self>

Wrapped parameter. Multiple source arguments are represented by a Parameter::List.

Implementations

impl<S> Parameter<S>

pub fn as_reference(&self) -> Option<InstanceId>

Returns a referenced id when this is Parameter::Ref.

pub fn as_list(&self) -> Option<&[Self]>

Returns aggregate items when this is Parameter::List.

pub fn unwrap_typed(&self) -> &Self

Recursively removes typed wrappers.

impl<S: AsRef<str>> Parameter<S>

pub fn as_text(&self) -> Option<&str>

Returns text content when this is Parameter::Text.

pub fn as_f64(&self) -> Option<f64>

Returns a numeric approximation, accepting integer and real syntax.

Trait Implementations

impl<S: Clone> Clone for Parameter<S>

fn clone(&self) -> Parameter<S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S: Debug> Debug for Parameter<S>

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

Formats the value using the given formatter.

impl<S: PartialEq> PartialEq for Parameter<S>

fn eq(&self, other: &Parameter<S>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<S: PartialEq> StructuralPartialEq for Parameter<S>