Enum Form 

pub enum Form {
    Bool,
    U64,
    F64,
    Str,
    StrList,
    Duration,
    ParamRef,
    GkSource,
    GkExpr,
    PathExpr,
    MetricSelector,
    Vocab(&'static [&'static str]),
    Node(&'static dyn EnumerableNode),
    NamedMap(&'static dyn EnumerableNode),
    ListOf(&'static dyn EnumerableNode),
    MapOf(&'static Form),
    ListOfForm(&'static Form),
    FreeMap,
    FreeScalar,
}

A valid value form for one element. Nested node kinds are direct references — the grammar graph carries itself.

Variants

Bool

Boolean (elements document accepted 0/1/“on”/“off” sugar).

U64

Unsigned integer (numeric strings accepted where the element documents it).

F64

Float.

Str

Plain string.

StrList

List of strings (globs where documented).

Duration

Duration: "2.5h", bare seconds, or a {param} ref.

ParamRef

A {param} / iter-var reference accepted alongside the literal forms listed beside it.

GkSource

A polydat bindings SOURCE block (multi-line grammar).

GkExpr

A single polydat expression (predicates, metric values).

PathExpr

A capture / result path expression (/0/field, rows[*].col — SRD-70).

MetricSelector

A metric selector ("family, label=value").

Vocab(&'static [&'static str])

One of a closed vocabulary of literal values.

Node(&'static dyn EnumerableNode)

A nested node of the referenced kind.

NamedMap(&'static dyn EnumerableNode)

A map of AUTHOR-CHOSEN names, each value a node of the referenced kind (e.g. phases: → phase nodes).

ListOf(&'static dyn EnumerableNode)

A list whose entries are nodes of the referenced kind.

MapOf(&'static Form)

A map of author-chosen names whose VALUES all take the given form (e.g. capture: name → PathExpr).

ListOfForm(&'static Form)

A list whose entries all take the given form.

FreeMap

An open map (author-chosen keys, unmodeled values).

FreeScalar

An open scalar (adapter-defined or free text).

Trait Implementations

impl Clone for Form

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Form

impl Debug for Form

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

Formats the value using the given formatter.

impl PartialEq for Form

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

Equality operator ==.

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

Inequality operator !=.