Enum diskplan_traversal::VariableSource

pub enum VariableSource<'a> {
    Empty,
    Directory(&'a DirectorySchema<'a>),
    Binding(&'a Identifier<'a>, String),
    Map(HashMap<String, String>),
}

Ways in which variables may be provided by the current scope

Variants

Empty

No available variables

Directory(&'a DirectorySchema<'a>)

A directory schema description, with its own variables

Binding(&'a Identifier<'a>, String)

A binding of a schema to a single name

Map(HashMap<String, String>)

A simple key-value map

Implementations

impl<'a> VariableSource<'a>

pub fn as_binding(&self) -> Option<(&Identifier<'a>, &String)>

Convenience for attempting to cast to a single schema binding

Trait Implementations

impl<'a> Debug for VariableSource<'a>

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

Formats the value using the given formatter.

impl<'a> Default for VariableSource<'a>

fn default() -> VariableSource<'a>

Returns the “default value” for a type.

impl From<HashMap<String, String>> for VariableSource<'_>

fn from(map: HashMap<String, String>) -> Self

Converts to this type from the input type.